feat: improve recording recovery and upload workflow

.codex/hooks.json

@@ -0,0 +1,29 @@
+{
+  "hooks": {
+    "PostToolUse": [
+      {
+        "matcher": "Edit|Write|apply_patch",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "[ ! -f \"/home/nanxunai/.agents/skills/impeccable/scripts/hook.mjs\" ] || node \"/home/nanxunai/.agents/skills/impeccable/scripts/hook.mjs\"",
+            "timeout": 5,
+            "statusMessage": "Checking UI changes"
+          }
+        ]
+      }
+    ],
+    "Stop": [
+      {
+        "hooks": [
+          {
+            "type": "command",
+            "command": "[ ! -f \"/home/nanxunai/.agents/skills/impeccable/scripts/hook.mjs\" ] || node \"/home/nanxunai/.agents/skills/impeccable/scripts/hook.mjs\"",
+            "timeout": 30,
+            "statusMessage": "Design deep pass"
+          }
+        ]
+      }
+    ]
+  }
+}

README.md

@@ -257,7 +257,7 @@ docker compose up -d
 ```bash
 ./scripts/build-fnos-package.sh
 ./scripts/smoke-fnos-package.sh \
-  artifacts/fnos/liverecorder-1.2.13-x86_64.fpk \
+  artifacts/fnos/liverecorder-1.2.19-x86_64.fpk \
   /path/to/nxsir-postgresql-15.1.1-x86_64.fpk
 ```
 

docs/postgresql-migration.md

@@ -35,7 +35,7 @@ PostgreSQL 共享服务由独立仓库构建和发布：<https://gitea.nxsir.cn/
 
 ```bash
 ./scripts/smoke-fnos-package.sh \
-  artifacts/fnos/liverecorder-1.2.13-x86_64.fpk \
+  artifacts/fnos/liverecorder-1.2.19-x86_64.fpk \
   /path/to/nxsir-postgresql-15.1.1-x86_64.fpk
 ```
 

fnos/manifest

@@ -1,5 +1,5 @@
 appname=liverecorder
-version=1.2.13
+version=1.2.19
 display_name=Live Recorder
 desc=原生直播录制系统，使用独立 PostgreSQL 共享服务，支持分片录制、弹幕采集与 OpenList 自动上传
 platform=x86

frontend/src/components/layout/MainLayout.vue

@@ -1,130 +1,107 @@
 <script setup lang="ts">
-import { computed, ref, watch } from "vue";
+import { computed } from "vue";
 import { useRoute, useRouter } from "vue-router";
 import { useAuthStore } from "@/stores/auth";
 import { useBackendStatus } from "@/composables/useBackendStatus";
 import { useUiPreferences } from "@/composables/useUiPreferences";
-import { useViewport } from "@/composables/useViewport";
-import {
-  Bell,
-  Collection,
-  DataAnalysis,
-  Document,
-  FolderOpened,
-  Fold,
-  House,
-  Menu,
-  Moon,
-  RefreshRight,
-  Setting,
-  Sunny,
-  Tickets,
-  Upload,
-  VideoCamera
-} from "@element-plus/icons-vue";
+import { Bell, Collection, DataAnalysis, Menu, Moon, Setting, Sunny, Tickets, VideoCamera } from "@element-plus/icons-vue";
 
 const router = useRouter();
 const route = useRoute();
 const authStore = useAuthStore();
-const { isMobile } = useViewport();
 const { backendUnavailable, backendMessage, backendLastChangedAt } = useBackendStatus();
 const { resolvedTheme, sidebarCollapsed, cycleThemeMode, toggleSidebarCollapsed } = useUiPreferences();
 
-const mobileNavVisible = ref(false);
-
 const navigationGroups = [
   {
-    key: "overview",
-    title: "总览",
+    key: "workspace",
+    title: "工作区",
     items: [
-      { index: "/", label: "仪表盘", icon: DataAnalysis },
+      { index: "/", label: "运行中心", shortLabel: "运行", icon: DataAnalysis, names: ["dashboard"] },
+      { index: "/live-rooms", label: "直播与录制", shortLabel: "录制", icon: VideoCamera, names: ["live-rooms", "record-tasks", "record-task-detail", "record-session-detail", "recovery"] },
+      { index: "/transcode-tasks", label: "处理与归档", shortLabel: "归档", icon: Collection, names: ["transcode-tasks", "upload-tasks", "media-browser"] },
+      { index: "/daily-reviews", label: "分析与排障", shortLabel: "分析", icon: Tickets, names: ["daily-reviews", "logs"] }
     ]
   },
   {
-    key: "monitor",
-    title: "监控录制",
+    key: "manage",
+    title: "管理",
     items: [
-      { index: "/live-rooms", label: "直播间", icon: House },
-      { index: "/record-tasks", label: "录制任务", icon: VideoCamera },
-      { index: "/recovery", label: "恢复中心", icon: RefreshRight }
-    ]
-  },
-  {
-    key: "media",
-    title: "媒资归档",
-    items: [
-      { index: "/transcode-tasks", label: "转码任务", icon: Collection },
-      { index: "/upload-tasks", label: "上传任务", icon: Upload },
-      { index: "/media-browser", label: "文件库", icon: FolderOpened }
-    ]
-  },
-  {
-    key: "analysis",
-    title: "分析",
-    items: [
-      { index: "/daily-reviews", label: "回顾日报", icon: Document },
-      { index: "/logs", label: "系统日志", icon: Tickets }
-    ]
-  },
-  {
-    key: "system",
-    title: "系统",
-    items: [
-      { index: "/settings", label: "系统设置", icon: Setting }
+      { index: "/settings", label: "系统设置", shortLabel: "设置", icon: Setting, names: ["settings"] }
     ]
   }
 ];
 
+const bottomNavigation = computed(() => navigationGroups.flatMap((group) => group.items));
+
+const workspaceTabs = computed(() => {
+  const name = String(route.name ?? "");
+  if (["live-rooms", "record-tasks", "record-task-detail", "record-session-detail", "recovery"].includes(name)) {
+    return [
+      { name: "live-rooms", label: "直播间" },
+      { name: "record-tasks", label: "录制会话" },
+      { name: "recovery", label: "恢复中心" }
+    ];
+  }
+  if (["transcode-tasks", "upload-tasks", "media-browser"].includes(name)) {
+    return [
+      { name: "transcode-tasks", label: "转码队列" },
+      { name: "upload-tasks", label: "上传队列" },
+      { name: "media-browser", label: "文件库" }
+    ];
+  }
+  if (["daily-reviews", "logs"].includes(name)) {
+    return [
+      { name: "daily-reviews", label: "回顾日报" },
+      { name: "logs", label: "系统日志" }
+    ];
+  }
+  return [];
+});
+
 const userDisplayName = computed(() => authStore.user?.displayName || authStore.user?.username || "管理员");
 const userAvatarText = computed(() => userDisplayName.value.trim().slice(0, 1).toUpperCase() || "录");
 
-function isNavItemActive(index: string) {
-  return route.path === index || route.path.startsWith(`${index}/`);
+function isNavItemActive(item: { names: string[] }) {
+  return item.names.includes(String(route.name ?? ""));
 }
 function navigate(index: string) { void router.push(index); }
 
+function isWorkspaceTabActive(name: string) {
+  const current = String(route.name ?? "");
+  if (name === "record-tasks") return ["record-tasks", "record-task-detail", "record-session-detail"].includes(current);
+  return current === name;
+}
+
 const pageBreadcrumb = computed(() => {
   const m: Record<string, string> = {
-    dashboard: "总览 / 仪表盘",
-    "live-rooms": "监控录制 / 直播间",
-    "record-tasks": "监控录制 / 录制任务",
-    "transcode-tasks": "媒资归档 / 转码任务",
-    "upload-tasks": "媒资归档 / 上传任务",
-    "media-browser": "媒资归档 / 文件库",
-    "record-task-detail": "监控录制 / 录制任务 / 分片详情",
-    "record-session-detail": "监控录制 / 录制任务 / 会话详情",
-    "daily-reviews": "分析 / 回顾日报",
-    logs: "分析 / 系统日志",
-    recovery: "监控录制 / 恢复中心",
+    dashboard: "工作台 / 运行中心",
+    "live-rooms": "直播与录制 / 直播间",
+    "record-tasks": "直播与录制 / 录制会话",
+    "transcode-tasks": "处理与归档 / 转码队列",
+    "upload-tasks": "处理与归档 / 上传队列",
+    "media-browser": "处理与归档 / 文件库",
+    "record-task-detail": "直播与录制 / 分片详情",
+    "record-session-detail": "直播与录制 / 会话详情",
+    "daily-reviews": "分析与排障 / 回顾日报",
+    logs: "分析与排障 / 系统日志",
+    recovery: "直播与录制 / 恢复中心",
     settings: "系统 / 系统设置"
   };
   return m[String(route.name)] || "控制台";
 });
 
 async function handleLogout() {
-  mobileNavVisible.value = false;
   await authStore.logout();
   await router.push({ name: "login" });
 }
 
-function openMobileNav() { mobileNavVisible.value = true; }
-function closeMobileNav() { mobileNavVisible.value = false; }
-
-watch(() => route.fullPath, () => { mobileNavVisible.value = false; });
-
 </script>
 
 <template>
   <div class="app-shell">
-    <!-- mobile scrim -->
-    <div
-      class="scrim"
-      :class="{ open: mobileNavVisible }"
-      @click="closeMobileNav"
-    />
-
     <!-- sidebar -->
-    <aside class="app-sidebar" :class="{ collapsed: sidebarCollapsed, 'mobile-open': mobileNavVisible }">
+    <aside class="app-sidebar" :class="{ collapsed: sidebarCollapsed }">
       <div class="app-brand">
         <div class="app-brand__mark">
           <svg width="22" height="22" viewBox="0 0 24 24" fill="none">
@@ -151,7 +128,7 @@ watch(() => route.fullPath, () => { mobileNavVisible.value = false; });
               <button
                 type="button"
                 class="app-nav-icon-item"
-                :class="{ 'is-active': isNavItemActive(item.index) }"
+                :class="{ 'is-active': isNavItemActive(item) }"
                 @click="navigate(item.index)"
               >
                 <el-icon :size="18"><component :is="item.icon" /></el-icon>
@@ -163,7 +140,7 @@ watch(() => route.fullPath, () => { mobileNavVisible.value = false; });
               v-for="item in group.items" :key="item.index"
               type="button"
               class="app-nav-item"
-              :class="{ 'is-active': isNavItemActive(item.index) }"
+              :class="{ 'is-active': isNavItemActive(item) }"
               @click="navigate(item.index)"
             >
               <el-icon :size="18"><component :is="item.icon" /></el-icon>
@@ -186,9 +163,10 @@ watch(() => route.fullPath, () => { mobileNavVisible.value = false; });
     <!-- main -->
     <div class="app-main-col">
       <header class="app-topbar">
-        <button class="app-topbar__menu-btn" @click="isMobile ? openMobileNav() : toggleSidebarCollapsed()">
+        <button class="app-topbar__menu-btn" @click="toggleSidebarCollapsed">
           <el-icon :size="20"><Menu /></el-icon>
         </button>
+        <div class="app-mobile-brand" aria-label="Live Recorder">LR</div>
         <div class="app-breadcrumb">{{ pageBreadcrumb }}</div>
 
         <div class="app-topbar__spacer" />
@@ -201,8 +179,18 @@ watch(() => route.fullPath, () => { mobileNavVisible.value = false; });
         </button>
 
         <el-dropdown trigger="click">
-          <button type="button" class="app-user-btn">
-            <span class="app-user-btn__avatar">{{ userAvatarText }}</span>
+          <button type="button" class="app-user-btn" aria-label="管理员菜单" title="管理员菜单">
+            <svg
+              class="app-user-btn__avatar"
+              viewBox="0 0 36 36"
+              width="36"
+              height="36"
+              preserveAspectRatio="xMidYMid meet"
+              aria-hidden="true"
+            >
+              <circle class="app-user-btn__avatar-circle" cx="18" cy="18" r="17.5" />
+              <text class="app-user-btn__avatar-text" x="18" y="18">{{ userAvatarText }}</text>
+            </svg>
             <span class="app-user-btn__name desktop-only">{{ userDisplayName }}</span>
           </button>
           <template #dropdown>
@@ -215,14 +203,49 @@ watch(() => route.fullPath, () => { mobileNavVisible.value = false; });
       </header>
 
       <main class="app-main">
+        <nav v-if="workspaceTabs.length" class="workspace-tabs" aria-label="工作区页面切换">
+          <button
+            v-for="tab in workspaceTabs"
+            :key="tab.name"
+            type="button"
+            :class="{ 'is-active': isWorkspaceTabActive(tab.name) }"
+            @click="router.push({ name: tab.name })"
+          >
+            {{ tab.label }}
+          </button>
+        </nav>
         <el-alert
           v-if="backendUnavailable && route.name !== 'record-tasks'"
           class="backend-alert"
           type="error" :closable="false" show-icon
           title="后端服务暂时不可用" :description="backendMessage"
         />
-        <router-view />
+        <router-view v-slot="{ Component, route: viewRoute }">
+          <transition name="page-swap" mode="out-in">
+            <component
+              :is="Component"
+              :key="String(viewRoute.name ?? viewRoute.path)"
+              class="app-route-view"
+            />
+          </transition>
+        </router-view>
       </main>
+
+      <nav class="app-bottom-nav" aria-label="移动端主导航">
+        <button
+          v-for="item in bottomNavigation"
+          :key="item.index"
+          type="button"
+          :class="{ 'is-active': isNavItemActive(item) }"
+          :aria-current="isNavItemActive(item) ? 'page' : undefined"
+          @click="navigate(item.index)"
+        >
+          <span class="app-bottom-nav__icon" aria-hidden="true">
+            <el-icon :size="19"><component :is="item.icon" /></el-icon>
+          </span>
+          <span class="app-bottom-nav__label">{{ item.shortLabel }}</span>
+        </button>
+      </nav>
     </div>
   </div>
 </template>
@@ -230,9 +253,6 @@ watch(() => route.fullPath, () => { mobileNavVisible.value = false; });
 <style scoped>
 /* ==================== Shell ==================== */
 .app-shell { display: flex; width: 100%; height: 100dvh; min-height: 0; overflow: hidden; }
-.scrim { position: fixed; inset: 0; background: rgba(15,23,42,.5); z-index: 39; opacity: 0; pointer-events: none; transition: opacity .2s; }
-.scrim.open { opacity: 1; pointer-events: auto; }
-
 /* ==================== Sidebar ==================== */
 .app-sidebar {
   position: fixed; inset: 0 auto 0 0; z-index: 30;
@@ -242,45 +262,44 @@ watch(() => route.fullPath, () => { mobileNavVisible.value = false; });
 }
 .app-sidebar.collapsed { width: var(--sidebar-w-collapsed); }
 
-.app-brand { display: flex; align-items: center; gap: 11px; height: var(--topbar-h); padding: 0 18px; flex-shrink: 0; border-bottom: 1px solid var(--side-border); }
-.app-brand__mark { width: 36px; height: 36px; flex-shrink: 0; border-radius: 8px; display: grid; place-items: center; color: #fff; background: var(--accent); box-shadow: 0 2px 8px rgba(26,86,219,.25); }
-html[data-theme="dark"] .app-brand__mark { background: #1a2438; box-shadow: 0 2px 8px rgba(0,0,0,.5); }
-.app-brand__name { font-weight: 800; font-size: 16px; letter-spacing: -.02em; color: var(--text-primary); white-space: nowrap; }
-html[data-theme="dark"] .app-brand__name { color: #eaf0fb; }
-.app-brand__sub { font-size: 11px; color: var(--side-title); white-space: nowrap; margin-top: 1px; }
+.app-brand { display: flex; align-items: center; gap: 11px; height: var(--topbar-h); padding: 0 17px; flex-shrink: 0; border-bottom: 1px solid var(--side-border); }
+.app-brand__mark { width: 34px; height: 34px; flex-shrink: 0; border-radius: 10px; display: grid; place-items: center; color: #fff; background: var(--action); box-shadow: 0 8px 22px color-mix(in srgb, var(--action) 26%, transparent); }
+html[data-theme="dark"] .app-brand__mark { background: var(--action); box-shadow: 0 8px 22px rgba(0,0,0,.28); }
+.app-brand__name { font-weight: 780; font-size: 14px; letter-spacing: -.01em; color: var(--text-primary); white-space: nowrap; }
+.app-brand__sub { font-size: 10px; color: var(--side-title); white-space: nowrap; margin-top: 1px; }
 .collapsed .app-brand__copy { display: none; }
 
-.app-nav { flex: 1; overflow-y: auto; padding: 14px 12px 8px; }
-.app-nav-group { margin-bottom: 16px; }
-.app-nav-group__title { padding: 6px 10px; font-size: 11px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--side-title); }
+.app-nav { flex: 1; overflow-y: auto; padding: 14px 10px 8px; }
+.app-nav-group { margin-bottom: 10px; }
+.app-nav-group__title { padding: 8px 10px 7px; font-size: 10px; font-weight: 750; letter-spacing: .12em; color: var(--side-title); }
 .collapsed .app-nav-group__title { font-size: 0; padding: 6px 0; text-align: center; }
 .collapsed .app-nav-group__title::after { content: "•"; font-size: 13px; }
 
 .app-nav-item {
   display: flex; align-items: center; gap: 11px; width: 100%;
-  padding: 9px 11px; margin-bottom: 2px; border: 0; border-radius: 6px;
-  background: transparent; color: var(--side-item); font-weight: 600; font-size: 14px;
+  min-height: 43px; padding: 0 11px; margin-bottom: 4px; border: 0; border-radius: 9px;
+  background: transparent; color: var(--side-item); font-weight: 650; font-size: 13px;
   text-align: left; cursor: pointer; transition: background .15s, color .15s;
 }
 .app-nav-item:hover { background: var(--side-item-hover-bg); color: var(--side-item-hover); }
-.app-nav-item.is-active { background: var(--side-active-bg); color: var(--side-active); }
+.app-nav-item.is-active { background: var(--side-active-bg); color: var(--side-active); box-shadow: inset 1px 0 var(--side-active); }
 
 .app-nav-icon-list { display: grid; gap: 8px; }
 .app-nav-icon-item {
-  display: grid; place-items: center; min-height: 46px; border: 0; border-radius: 6px;
+  display: grid; place-items: center; min-height: 43px; border: 0; border-radius: 9px;
   background: transparent; color: var(--side-item); cursor: pointer;
 }
 .app-nav-icon-item:hover { background: var(--side-item-hover-bg); color: var(--side-item-hover); }
-.app-nav-icon-item.is-active { background: var(--side-active-bg); color: var(--side-active); }
+.app-nav-icon-item.is-active { background: var(--side-active-bg); color: var(--side-active); box-shadow: inset 1px 0 var(--side-active); }
 
 .app-sidebar__foot { padding: 12px; border-top: 1px solid var(--side-border); }
-.app-health { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 6px; background: rgba(22,163,74,.10); border: 1px solid rgba(22,163,74,.20); }
+.app-health { display: flex; align-items: center; gap: 10px; min-height: 48px; padding: 8px 10px; border-radius: 10px; background: var(--success-soft); border: 1px solid color-mix(in srgb, var(--success) 22%, var(--side-border)); }
 html[data-theme="dark"] .app-health { background: rgba(52,211,153,.12); border-color: rgba(52,211,153,.22); }
 .app-health.is-danger { background: var(--danger-soft); border-color: color-mix(in srgb, var(--danger) 30%, transparent); }
 .app-health__dot { width: 8px; height: 8px; border-radius: 99px; background: #16a34a; box-shadow: 0 0 0 3px rgba(22,163,74,.18); }
 html[data-theme="dark"] .app-health__dot { background: #34d399; box-shadow: 0 0 0 3px rgba(52,211,153,.22); }
 .app-health.is-danger .app-health__dot { background: var(--danger); box-shadow: 0 0 0 3px var(--danger-soft); }
-.app-health__txt { font-size: 12.5px; font-weight: 600; color: #15803d; }
+.app-health__txt { font-size: 11px; font-weight: 700; color: var(--success); }
 html[data-theme="dark"] .app-health__txt { color: #6ee7b7; }
 .app-health.is-danger .app-health__txt { color: var(--danger); }
 .collapsed .app-health__txt { display: none; }
@@ -298,41 +317,78 @@ html[data-theme="dark"] .app-health__txt { color: #6ee7b7; }
 .app-topbar {
   position: relative; z-index: 20; flex: 0 0 var(--topbar-h);
   height: var(--topbar-h); display: flex; align-items: center; gap: 12px;
-  padding: 0 24px;
-  background: color-mix(in srgb, var(--surface) 70%, transparent);
-  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
-  border-bottom: 1px solid rgba(15,23,42,.07);
+  padding: 0 22px;
+  background: color-mix(in srgb, var(--surface) 96%, transparent);
+  border-bottom: 1px solid var(--border-subtle);
 }
 html[data-theme="dark"] .app-topbar { border-bottom-color: rgba(255,255,255,.06); }
 .app-topbar__menu-btn { width: 36px; height: 36px; flex-shrink: 0; display: grid; place-items: center; border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--text-secondary); cursor: pointer; }
 .app-topbar__menu-btn:hover { background: var(--surface-hover); color: var(--text-primary); }
+.app-mobile-brand { display: none; width: 27px; height: 27px; place-items: center; border-radius: 8px; color: #fff; background: var(--action); font-size: 10px; font-weight: 800; }
 .app-breadcrumb { font-size: 13.5px; color: var(--text-muted); min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
 .app-topbar__spacer { flex: 1; }
 .app-topbar__icon-btn { width: 36px; height: 36px; flex-shrink: 0; display: grid; place-items: center; border: 1px solid transparent; border-radius: var(--radius-sm); background: transparent; color: var(--text-secondary); cursor: pointer; }
 .app-topbar__icon-btn:hover { background: var(--surface-hover); color: var(--text-primary); }
 .app-user-btn { display: flex; align-items: center; gap: 9px; padding: 4px 10px 4px 4px; border: 1px solid var(--border-subtle); border-radius: 99px; background: var(--surface); cursor: pointer; }
 .app-user-btn:hover { background: var(--surface-hover); }
-.app-user-btn__avatar { width: 30px; height: 30px; flex-shrink: 0; border-radius: 99px; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 13px; background: var(--accent); }
+.app-user-btn__avatar { display: block; width: 30px; min-width: 30px; height: 30px; min-height: 30px; flex: 0 0 30px; overflow: visible; }
+.app-user-btn__avatar-circle { fill: var(--purple); stroke: color-mix(in srgb, var(--purple) 76%, var(--border-subtle)); stroke-width: 1; vector-effect: non-scaling-stroke; }
+.app-user-btn__avatar-text { fill: #fff; font-family: var(--font-sans); font-size: 13px; font-weight: 750; text-anchor: middle; dominant-baseline: central; }
 .app-user-btn__name { font-size: 13px; font-weight: 700; }
 
 /* ==================== Main ==================== */
 .app-main {
   flex: 1; min-width: 0; min-height: 0; padding: 24px 28px 0;
   overflow: auto; overscroll-behavior: contain; scrollbar-gutter: stable;
+  background:
+    radial-gradient(ellipse at 88% -12%, var(--ambient-blue), transparent 34%),
+    radial-gradient(ellipse at 98% 8%, var(--ambient-violet), transparent 28%),
+    radial-gradient(ellipse at 76% -18%, var(--ambient-warm), transparent 25%),
+    var(--bg-base);
 }
 .backend-alert { width: min(100%, var(--page-max)); margin: 0 auto 18px; border-radius: var(--radius-md); }
+.workspace-tabs { display: flex; align-items: center; gap: 4px; width: min(100%, var(--page-max)); margin: 0 auto 16px; padding: 4px; border: 1px solid var(--border-subtle); border-radius: 10px; background: var(--surface); }
+.workspace-tabs button { min-height: 33px; padding: 0 13px; border: 0; border-radius: 7px; color: var(--text-muted); background: transparent; font-size: 11px; font-weight: 700; }
+.workspace-tabs button:hover { color: var(--text-primary); background: var(--surface-muted); }
+.workspace-tabs button.is-active { color: var(--accent); background: var(--accent-soft); }
+.app-bottom-nav { display: none; height: calc(65px + env(safe-area-inset-bottom)); flex: 0 0 calc(65px + env(safe-area-inset-bottom)); padding-bottom: env(safe-area-inset-bottom); border-top: 1px solid var(--border-subtle); background: var(--surface); }
+.app-bottom-nav button { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1px; padding: 4px 0 3px; border: 0; color: var(--text-muted); background: transparent; font-size: 9px; transition: color .2s ease; }
+.app-bottom-nav__icon { display: grid; width: 44px; height: 28px; flex: 0 0 28px; place-items: center; border-radius: 99px; background: transparent; transform: scale(.84); transition: background-color .18s ease, transform .24s cubic-bezier(.2,.8,.2,1); }
+.app-bottom-nav__icon :deep(.el-icon) { transition: transform .24s cubic-bezier(.2,.8,.2,1); }
+.app-bottom-nav__label { max-width: 100%; overflow: hidden; line-height: 14px; text-overflow: ellipsis; white-space: nowrap; transition: color .2s ease, font-weight .2s ease; }
+.app-bottom-nav button.is-active { color: var(--accent); }
+.app-bottom-nav button.is-active .app-bottom-nav__icon { background: var(--accent-soft); transform: scale(1); }
+.app-bottom-nav button.is-active .app-bottom-nav__icon :deep(.el-icon) { transform: scale(1.05); }
+.app-bottom-nav button.is-active .app-bottom-nav__label { font-weight: 750; }
+.app-bottom-nav button:active .app-bottom-nav__icon { transform: scale(.9); transition-duration: .08s; }
+
+.page-swap-enter-active { transition: opacity .2s ease, transform .24s cubic-bezier(.2,.8,.2,1); }
+.page-swap-leave-active { transition: opacity .12s ease, transform .12s ease; }
+.page-swap-enter-from { opacity: 0; transform: translateY(7px); }
+.page-swap-leave-to { opacity: 0; transform: translateY(-3px); }
 
 /* ==================== Responsive ==================== */
 @media (max-width: 768px) {
-  .app-sidebar { transform: translateX(-100%); transition: transform .24s cubic-bezier(.4,0,.2,1); }
-  .app-sidebar.mobile-open { transform: translateX(0); width: 280px; z-index: 50; }
-  .app-sidebar:not(.mobile-open) .app-brand { display: none; }
-  .app-sidebar:not(.mobile-open) .app-sidebar__foot { display: none; }
+  .app-sidebar { display: none; }
   .app-main-col { margin-left: 0 !important; }
-  .app-main { padding: 12px 12px 0; }
+  .app-main {
+    padding: 12px 12px 0;
+    background:
+      radial-gradient(240px 170px at 108% -5%, color-mix(in srgb, var(--ambient-blue) 58%, transparent), transparent 74%),
+      radial-gradient(180px 130px at 96% -12%, color-mix(in srgb, var(--ambient-violet) 46%, transparent), transparent 76%),
+      var(--bg-base);
+  }
   .app-topbar { padding: 0 10px; gap: 6px; }
-  .app-topbar__menu-btn { display: grid; }
+  .app-topbar__menu-btn { display: none; }
+  .app-mobile-brand { display: grid; }
   .app-breadcrumb { font-size: 11.5px; max-width: 130px; }
+  .app-topbar :deep(.el-dropdown) { display: block; width: 36px; min-width: 36px; height: 36px; flex: 0 0 36px; line-height: 0; }
+  .app-user-btn { display: grid; width: 36px; min-width: 36px; height: 36px; min-height: 36px; padding: 0; flex: 0 0 36px; place-items: center; border: 0; border-radius: 50%; background: transparent; box-shadow: none; }
+  .app-user-btn:hover { background: transparent; }
+  .app-user-btn__avatar { width: 36px; min-width: 36px; height: 36px; min-height: 36px; flex-basis: 36px; filter: drop-shadow(0 3px 5px color-mix(in srgb, var(--purple) 24%, transparent)); }
   .app-user-btn__name { display: none; }
+  .workspace-tabs { width: 100%; overflow-x: auto; margin-bottom: 12px; }
+  .workspace-tabs button { flex: 1; min-width: max-content; }
+  .app-bottom-nav { display: flex; }
 }
 </style>

frontend/src/components/ui/PlatformMark.vue

@@ -0,0 +1,56 @@
+<script setup lang="ts">
+import { computed } from "vue";
+
+const props = withDefaults(defineProps<{
+  name?: string | null;
+  showLabel?: boolean;
+}>(), {
+  name: "",
+  showLabel: true
+});
+
+const label = computed(() => props.name?.trim() || "未知平台");
+const kind = computed(() => {
+  const value = label.value.toLowerCase();
+  if (value.includes("哔哩") || value.includes("bili")) return "bilibili";
+  if (value.includes("抖音") || value.includes("douyin") || value.includes("tiktok")) return "douyin";
+  if (value.includes("斗鱼") || value.includes("douyu")) return "douyu";
+  return "generic";
+});
+</script>
+
+<template>
+  <span class="platform-mark" :class="`platform-mark--${kind}`" :title="label">
+    <svg v-if="kind === 'bilibili'" viewBox="0 0 24 24" aria-hidden="true">
+      <path d="m8 3 3 3M16 3l-3 3" />
+      <rect x="3" y="6" width="18" height="14" rx="4" />
+      <path d="M8.5 11.5v2.5M15.5 11.5v2.5M9 17c1.8 1.1 4.2 1.1 6 0" />
+    </svg>
+    <svg v-else-if="kind === 'douyin'" viewBox="0 0 24 24" aria-hidden="true">
+      <path d="M14 4v10.2a4 4 0 1 1-3-3.86V7.1c2.25 1.9 4.35 2.9 7 2.9V7.1c-1.8-.1-3.15-1.05-4-3.1Z" />
+    </svg>
+    <svg v-else-if="kind === 'douyu'" viewBox="0 0 24 24" aria-hidden="true">
+      <path d="M3 12c3.8-5.4 9.5-6.9 16-4.1l2-2v7.8l-2-1.6C14.1 17.6 7.8 17.8 3 12Z" />
+      <circle cx="15.8" cy="9.5" r="1" />
+    </svg>
+    <svg v-else viewBox="0 0 24 24" aria-hidden="true">
+      <circle cx="12" cy="12" r="8.5" />
+      <path d="M3.5 12h17M12 3.5c2.4 2.4 3.6 5.2 3.6 8.5S14.4 18.1 12 20.5C9.6 18.1 8.4 15.3 8.4 12S9.6 5.9 12 3.5Z" />
+    </svg>
+    <span v-if="showLabel">{{ label }}</span>
+    <span v-else class="sr-only">{{ label }}</span>
+  </span>
+</template>
+
+<style scoped>
+.platform-mark { display: inline-flex; align-items: center; gap: 5px; min-width: 0; color: var(--text-muted); font-size: inherit; line-height: 1.2; white-space: nowrap; }
+.platform-mark svg { width: 17px; height: 17px; flex: 0 0 auto; padding: 2px; border-radius: 4px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
+.platform-mark--bilibili svg { color: #c93e6d; background: #ffedf3; }
+.platform-mark--douyin svg { color: #141923; background: #edf0f5; }
+.platform-mark--douyu svg { color: #b94c00; background: #fff0e4; }
+.platform-mark--generic svg { color: var(--accent); background: var(--accent-soft); }
+:global(html[data-theme="dark"]) .platform-mark--bilibili svg { color: #ff92b4; background: rgba(217, 72, 117, .20); }
+:global(html[data-theme="dark"]) .platform-mark--douyin svg { color: #f7f9fc; background: rgba(236, 241, 248, .14); }
+:global(html[data-theme="dark"]) .platform-mark--douyu svg { color: #ff9b57; background: rgba(218, 92, 8, .20); }
+.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
+</style>

frontend/src/components/ui/RightDrawer.vue

@@ -51,8 +51,14 @@ const visible = computed({
 </template>
 
 <style scoped>
-:deep(.right-drawer .el-drawer__body) {
+:global(.right-drawer) {
+  max-width: 100vw;
+  max-width: 100dvw;
+}
+
+:global(.right-drawer .el-drawer__body) {
   height: 100%;
+  min-height: 0;
   padding: 0;
   overflow: hidden;
 }
@@ -76,6 +82,10 @@ const visible = computed({
   flex: 0 0 auto;
 }
 
+.right-drawer__copy {
+  min-width: 0;
+}
+
 .right-drawer__eyebrow {
   margin-bottom: 8px;
   color: var(--accent);
@@ -111,6 +121,8 @@ const visible = computed({
   overflow: auto;
   overscroll-behavior: contain;
   scrollbar-gutter: stable;
+  touch-action: pan-y;
+  -webkit-overflow-scrolling: touch;
 }
 
 .right-drawer__footer {
@@ -122,4 +134,42 @@ const visible = computed({
   flex: 0 0 auto;
   background: var(--surface);
 }
+
+@media (max-width: 640px) {
+  .right-drawer__header {
+    gap: 10px;
+    padding: 18px 16px 14px;
+  }
+
+  .right-drawer__eyebrow {
+    margin-bottom: 5px;
+  }
+
+  .right-drawer__title {
+    font-size: 20px;
+  }
+
+  .right-drawer__subtitle {
+    margin-top: 5px;
+    line-height: 1.5;
+    overflow-wrap: anywhere;
+  }
+
+  .right-drawer__body {
+    padding: 16px;
+    scrollbar-gutter: auto;
+  }
+
+  .right-drawer__footer {
+    gap: 8px;
+    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
+  }
+
+  :global(.right-drawer__footer .el-button) {
+    min-width: 0;
+    flex: 1 1 0;
+    margin: 0;
+    padding-inline: 8px;
+  }
+}
 </style>

frontend/src/components/ui/StorageCapacity.vue

@@ -43,6 +43,9 @@ const barColor = computed(() => {
   if (tier.value === "yellow") return "var(--warning)";
   return "var(--danger)";
 });
+const ringStyle = computed(() => ({
+  background: `conic-gradient(${barColor.value} ${percentage.value}%, var(--surface-strong) 0)`
+}));
 
 function formatBytes(bytes: number) {
   if (!Number.isFinite(bytes) || bytes < 0) return "--";
@@ -59,58 +62,58 @@ function formatBytes(bytes: number) {
 
 <template>
   <section class="storage-capacity" data-testid="storage-capacity">
-    <div class="storage-capacity__header">
-      <div>
-        <div class="storage-capacity__eyebrow">录制存储</div>
-        <div class="storage-capacity__headline">
-          <strong>{{ status.isAvailable ? `${percentage.toFixed(1)}%` : "--" }}</strong>
-          <span>已使用</span>
-        </div>
+    <div
+      class="storage-capacity__ring"
+      :style="ringStyle"
+      role="img"
+      :aria-label="`存储已使用 ${percentage.toFixed(1)}%`"
+    >
+      <div class="storage-capacity__ring-inner">
+        <strong>{{ status.isAvailable ? `${percentage.toFixed(1)}%` : "--" }}</strong>
+        <span>已使用</span>
       </div>
-      <el-tag :type="tagType" effect="light">{{ statusLabel }}</el-tag>
     </div>
 
-    <el-progress
-      :percentage="percentage"
-      :stroke-width="12"
-      :show-text="false"
-      :color="barColor"
-      :aria-label="`存储已使用 ${percentage.toFixed(1)}%`"
-    />
+    <div class="storage-capacity__detail">
+      <div class="storage-capacity__summary">
+        <strong>{{ status.isAvailable ? `${formatBytes(status.usedBytes)} / ${formatBytes(status.totalBytes)}` : "容量不可用" }}</strong>
+        <el-tooltip v-if="status.message" :content="status.message" placement="top">
+          <el-tag :type="tagType" effect="light" tabindex="0">{{ statusLabel }}</el-tag>
+        </el-tooltip>
+        <el-tag v-else :type="tagType" effect="light">{{ statusLabel }}</el-tag>
+      </div>
+      <p class="storage-capacity__path" :title="status.checkedPath">{{ status.checkedPath || "未配置输出路径" }}</p>
 
-    <dl class="storage-capacity__metrics">
-      <div><dt>已使用</dt><dd>{{ status.isAvailable ? formatBytes(status.usedBytes) : "--" }}</dd></div>
-      <div><dt>可用</dt><dd>{{ status.isAvailable ? formatBytes(status.availableBytes) : "--" }}</dd></div>
-      <div><dt>总容量</dt><dd>{{ status.isAvailable ? formatBytes(status.totalBytes) : "--" }}</dd></div>
-      <div><dt>剩余比例</dt><dd>{{ status.isAvailable ? `${status.freePercent.toFixed(1)}%` : "--" }}</dd></div>
-    </dl>
-
-    <div class="storage-capacity__foot">
-      <span class="storage-capacity__path" :title="status.checkedPath">{{ status.checkedPath || "未配置输出路径" }}</span>
-      <el-tooltip v-if="status.message" :content="status.message" placement="top">
-        <span class="storage-capacity__help" tabindex="0">状态说明</span>
-      </el-tooltip>
+      <dl class="storage-capacity__metrics">
+        <div><dt>已使用</dt><dd>{{ status.isAvailable ? formatBytes(status.usedBytes) : "--" }}</dd></div>
+        <div><dt>可用</dt><dd>{{ status.isAvailable ? formatBytes(status.availableBytes) : "--" }}</dd></div>
+        <div><dt>剩余比例</dt><dd>{{ status.isAvailable ? `${status.freePercent.toFixed(1)}%` : "--" }}</dd></div>
+      </dl>
     </div>
   </section>
 </template>
 
 <style scoped>
-.storage-capacity { display: grid; gap: 18px; }
-.storage-capacity__header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
-.storage-capacity__eyebrow { color: var(--text-muted); font-size: 12px; font-weight: 700; }
-.storage-capacity__headline { display: flex; align-items: baseline; gap: 8px; margin-top: 5px; }
-.storage-capacity__headline strong { color: var(--text-primary); font-size: 30px; line-height: 1; font-variant-numeric: tabular-nums; }
-.storage-capacity__headline span { color: var(--text-muted); font-size: 13px; }
-.storage-capacity__metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; margin: 0; }
-.storage-capacity__metrics > div { min-width: 0; padding: 10px 12px; border-radius: var(--radius-sm); background: var(--surface-muted); }
-.storage-capacity__metrics dt { color: var(--text-muted); font-size: 11px; }
-.storage-capacity__metrics dd { margin: 4px 0 0; color: var(--text-primary); font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; }
-.storage-capacity__foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-width: 0; color: var(--text-muted); font-size: 12px; }
-.storage-capacity__path { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-family: var(--font-mono); }
-.storage-capacity__help { flex: 0 0 auto; color: var(--accent); cursor: help; }
+.storage-capacity { display: grid; grid-template-columns: 106px minmax(0, 1fr); align-items: center; gap: 20px; }
+.storage-capacity__ring { width: 100px; height: 100px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; }
+.storage-capacity__ring-inner { width: 76px; height: 76px; display: grid; place-content: center; border-radius: 50%; background: var(--surface); text-align: center; }
+.storage-capacity__ring strong { display: block; color: var(--text-primary); font-size: 19px; line-height: 1.1; font-variant-numeric: tabular-nums; }
+.storage-capacity__ring span { margin-top: 3px; color: var(--text-muted); font-size: 9px; }
+.storage-capacity__detail { min-width: 0; }
+.storage-capacity__summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
+.storage-capacity__summary > strong { min-width: 0; color: var(--text-primary); font-size: 13px; font-variant-numeric: tabular-nums; }
+.storage-capacity__path { margin: 7px 0 0; overflow: hidden; color: var(--text-secondary); font-family: var(--font-mono); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
+.storage-capacity__metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin: 13px 0 0; }
+.storage-capacity__metrics > div { min-width: 0; padding: 9px; border-radius: var(--radius-sm); background: var(--surface-muted); }
+.storage-capacity__metrics dt { color: var(--text-muted); font-size: 9px; }
+.storage-capacity__metrics dd { margin: 3px 0 0; overflow: hidden; color: var(--text-primary); font-size: 11px; font-weight: 700; font-variant-numeric: tabular-nums; text-overflow: ellipsis; white-space: nowrap; }
 @media (max-width: 640px) {
-  .storage-capacity__metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
-  .storage-capacity__foot { align-items: flex-start; flex-direction: column; }
-  .storage-capacity__path { width: 100%; white-space: normal; overflow-wrap: anywhere; }
+  .storage-capacity { grid-template-columns: 88px minmax(0, 1fr); gap: 14px; }
+  .storage-capacity__ring { width: 82px; height: 82px; }
+  .storage-capacity__ring-inner { width: 62px; height: 62px; }
+  .storage-capacity__ring strong { font-size: 16px; }
+  .storage-capacity__summary { align-items: flex-start; flex-direction: column; gap: 6px; }
+  .storage-capacity__metrics { gap: 5px; }
+  .storage-capacity__metrics > div { padding: 7px; }
 }
 </style>

frontend/src/composables/useViewport.ts

@@ -1,6 +1,8 @@
 import { computed, onBeforeUnmount, onMounted, ref } from "vue";
 
-const MOBILE_BREAKPOINT = 768;
+// CSS mobile rules use `max-width: 768px`, so 768px must follow the same
+// rendering branch instead of receiving the desktop/table markup.
+const MOBILE_BREAKPOINT = 769;
 const TABLET_BREAKPOINT = 1024;
 const DESKTOP_BREAKPOINT = 1280;
 

frontend/src/styles/main.css

@@ -13,65 +13,73 @@
   -webkit-font-smoothing: antialiased;
 
   /* neutrals */
-  --bg-base: #eef1f6;
-  --bg-subtle: #e7ebf2;
+  --bg-base: #f4f7fc;
+  --bg-subtle: #edf2f9;
   --surface: #ffffff;
   --surface-raised: #ffffff;
-  --surface-muted: #f4f7fb;
-  --surface-strong: #eef2f8;
-  --surface-hover: #eef2f8;
-  --border-subtle: #e3e7ef;
-  --border-base: #d2d8e3;
-  --text-primary: #0f172a;
-  --text-secondary: #45526a;
-  --text-muted: #6a7689;
-  --text-soft: #97a1b3;
+  --surface-muted: #f8fafe;
+  --surface-subtle: #f8fafe;
+  --surface-strong: #edf2f9;
+  --surface-hover: #f1f6ff;
+  --border-subtle: #e3eaf4;
+  --border-base: #cfd9e8;
+  --text-primary: #17233a;
+  --text-secondary: #42526d;
+  --text-muted: #62718a;
+  --text-soft: #68768d;
 
   /* sidebar */
-  --side-bg: #f3f5f9;
-  --side-border: #e3e7ef;
-  --side-title: #7a8699;
-  --side-item: #44526b;
-  --side-item-hover-bg: rgba(26, 86, 219, 0.07);
-  --side-item-hover: #1e40af;
-  --side-active-bg: rgba(26, 86, 219, 0.10);
-  --side-active: #1a56db;
+  --side-bg: #fbfcff;
+  --side-border: #e3eaf4;
+  --side-title: #68768d;
+  --side-item: #40506a;
+  --side-item-hover-bg: #f8fafe;
+  --side-item-hover: #17233a;
+  --side-active-bg: #f1f6ff;
+  --side-active: #185dcc;
 
   /* brand */
-  --accent: #1a56db;
-  --accent-strong: #1e40af;
-  --accent-soft: rgba(26, 86, 219, 0.12);
-  --accent-soft-2: rgba(26, 86, 219, 0.07);
-  --info: #2563eb;
-  --info-soft: rgba(37, 99, 235, 0.11);
-  --success: #16a34a;
-  --success-soft: rgba(22, 163, 74, 0.12);
-  --warning: #d97706;
-  --warning-soft: rgba(217, 119, 6, 0.13);
-  --danger: #dc2626;
-  --danger-soft: rgba(220, 38, 38, 0.11);
-  --purple: #7c3aed;
-  --purple-soft: rgba(124, 58, 237, 0.11);
+  --accent: #185dcc;
+  --accent-strong: #144ba8;
+  --accent-soft: #eaf2ff;
+  --accent-soft-2: #f1f6ff;
+  --action: #246bfe;
+  --action-hover: #1856d7;
+  --info: #185dcc;
+  --info-soft: #eaf2ff;
+  --cyan: #0d89ad;
+  --cyan-soft: #e7f7fb;
+  --success: #137e5c;
+  --success-soft: #e6f7f0;
+  --warning: #a45f00;
+  --warning-soft: #fff4dd;
+  --danger: #b83342;
+  --danger-soft: #ffebef;
+  --purple: #6558d9;
+  --purple-soft: #f0edff;
+  --ambient-blue: rgba(86, 137, 255, .13);
+  --ambient-violet: rgba(146, 119, 255, .09);
+  --ambient-warm: rgba(255, 187, 112, .08);
 
   /* elevation */
-  --shadow-xs: 0 1px 3px rgba(16, 24, 40, 0.09), 0 1px 2px rgba(16, 24, 40, 0.05);
-  --shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.10), 0 1px 3px rgba(16, 24, 40, 0.06);
-  --shadow-md: 0 8px 20px rgba(16, 24, 40, 0.12), 0 2px 6px rgba(16, 24, 40, 0.07);
-  --shadow-lg: 0 16px 40px rgba(16, 24, 40, 0.16), 0 4px 10px rgba(16, 24, 40, 0.08);
-  --shadow-float: 0 24px 56px rgba(16, 24, 40, 0.22);
+  --shadow-xs: 0 2px 8px rgba(37, 61, 98, .045);
+  --shadow-sm: 0 8px 24px rgba(37, 61, 98, .08);
+  --shadow-md: 0 14px 38px rgba(37, 61, 98, .10);
+  --shadow-lg: 0 20px 52px rgba(22, 38, 68, .16);
+  --shadow-float: 0 28px 76px rgba(22, 38, 68, .22);
 
   /* radius */
   --radius-xs: 7px;
   --radius-sm: 9px;
-  --radius-md: 14px;
-  --radius-lg: 20px;
+  --radius-md: 12px;
+  --radius-lg: 18px;
 
   /* layout */
-  --sidebar-w: 244px;
+  --sidebar-w: 224px;
   --sidebar-w-collapsed: 72px;
-  --topbar-h: 62px;
-  --page-max: 1320px;
-  --page-gap: 16px;
+  --topbar-h: 64px;
+  --page-max: 1440px;
+  --page-gap: 14px;
   --content-padding: 20px;
   --content-padding-mobile: 14px;
   --control-height: 40px;
@@ -88,42 +96,56 @@ html[data-density="compact"] {
   --control-height-sm: 30px;
   --table-row-padding: 12px;
   --header-row-height: 56px;
-  --topbar-h: 56px;
+  --topbar-h: 64px;
 }
 
 html[data-theme="dark"] {
   color-scheme: dark;
-  --bg-base: #0a1120;
-  --bg-subtle: #0f172a;
-  --surface: #121c30;
-  --surface-raised: #162238;
-  --surface-muted: #16223899;
-  --surface-strong: #1b2942;
-  --surface-hover: #1b2942;
-  --border-subtle: #1f2c44;
-  --border-base: #2c3a55;
-  --text-primary: #e9eefb;
-  --text-secondary: #b6c4dd;
-  --text-muted: #8295b3;
-  --text-soft: #647a9a;
+  --bg-base: #0f1726;
+  --bg-subtle: #111d30;
+  --surface: #172235;
+  --surface-raised: #1b2940;
+  --surface-muted: #1b2940;
+  --surface-subtle: #1b2940;
+  --surface-strong: #22324a;
+  --surface-hover: #22324a;
+  --border-subtle: #2c3c55;
+  --border-base: #40516a;
+  --text-primary: #f2f6fd;
+  --text-secondary: #d2dbea;
+  --text-muted: #a9b7cb;
+  --text-soft: #9aa9be;
 
-  --side-bg: #0c1424;
-  --side-border: #1a2740;
-  --side-title: #4a607d;
-  --side-item: #8295b3;
-  --side-item-hover-bg: rgba(255, 255, 255, 0.05);
-  --side-item-hover: #d4def0;
-  --side-active-bg: rgba(96, 165, 250, 0.18);
-  --side-active: #93c5fd;
+  --side-bg: #131e30;
+  --side-border: #2c3c55;
+  --side-title: #a1aec2;
+  --side-item: #d6e0ee;
+  --side-item-hover-bg: #1b2940;
+  --side-item-hover: #f2f6fd;
+  --side-active-bg: #1b2b43;
+  --side-active: #79a9ff;
 
-  --accent: #60a5fa;
-  --accent-strong: #3b82f6;
-  --accent-soft: rgba(96, 165, 250, 0.18);
-  --accent-soft-2: rgba(96, 165, 250, 0.10);
-  --info: #60a5fa;
-  --success: #34d399;
-  --warning: #fbbf24;
-  --danger: #f87171;
+  --accent: #79a9ff;
+  --accent-strong: #a5c6ff;
+  --accent-soft: rgba(86, 143, 238, .20);
+  --accent-soft-2: rgba(86, 143, 238, .12);
+  --action: #2763d2;
+  --action-hover: #3575e6;
+  --info: #79a9ff;
+  --info-soft: rgba(86, 143, 238, .20);
+  --cyan: #62c9e4;
+  --cyan-soft: rgba(43, 165, 196, .17);
+  --success: #65d0a4;
+  --success-soft: rgba(40, 159, 114, .20);
+  --warning: #f0b75c;
+  --warning-soft: rgba(207, 139, 35, .20);
+  --danger: #ff8b94;
+  --danger-soft: rgba(211, 68, 82, .22);
+  --purple: #aa9cff;
+  --purple-soft: rgba(123, 102, 221, .20);
+  --ambient-blue: rgba(58, 112, 220, .17);
+  --ambient-violet: rgba(119, 88, 207, .13);
+  --ambient-warm: rgba(205, 132, 55, .07);
 
   --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.4);
   --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.45);
@@ -133,6 +155,7 @@ html[data-theme="dark"] {
 }
 
 /* ============================ Element Plus overrides ============================ */
+:root,
 #app {
   --el-color-primary: var(--accent);
   --el-color-primary-light-3: #5b8cf0;
@@ -162,16 +185,18 @@ html[data-theme="dark"] {
   --el-mask-color: rgba(15, 23, 42, 0.54);
 }
 
+html[data-theme="dark"],
 html[data-theme="dark"] #app {
-  --el-color-primary-light-3: #93c5fd;
-  --el-color-primary-light-5: #bfdbfe;
-  --el-color-primary-light-7: #dbeafe;
-  --el-color-primary-light-9: #eff6ff;
+  --el-color-primary-light-3: #5d8fe7;
+  --el-color-primary-light-5: #426baf;
+  --el-color-primary-light-7: #2c4775;
+  --el-color-primary-light-9: #1b2b43;
   --el-mask-color: rgba(3, 7, 14, 0.72);
 }
 
 /* ============================ Base ============================ */
 * { box-sizing: border-box; }
+html { -webkit-tap-highlight-color: transparent; }
 html, body, #app { margin: 0; width: 100%; height: 100%; min-height: 100%; }
 body {
   color: var(--text-primary);
@@ -182,6 +207,14 @@ body {
 a { color: inherit; text-decoration: none; }
 button { font-family: inherit; cursor: pointer; }
 
+/* Keep keyboard focus visible without leaving a browser-default frame after
+   mouse or touch activation. */
+:where(a, button, [role="button"], input, textarea, select):focus { outline: none; }
+:where(a, button, [role="button"], input, textarea, select):focus-visible {
+  outline: 3px solid color-mix(in srgb, var(--accent) 34%, transparent);
+  outline-offset: 2px;
+}
+
 *::-webkit-scrollbar { width: 10px; height: 10px; }
 *::-webkit-scrollbar-thumb { background: var(--border-base); border-radius: 99px; border: 3px solid transparent; background-clip: content-box; }
 *::-webkit-scrollbar-thumb:hover { background: var(--text-soft); background-clip: content-box; }
@@ -193,9 +226,9 @@ button { font-family: inherit; cursor: pointer; }
 .page-stack { display: grid; gap: var(--page-gap); width: min(100%, var(--page-max)); margin: 0 auto; padding-bottom: 24px; }
 .page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
 .page-header > div:first-child { flex: 1; min-width: 0; }
-.page-title { margin: 0; font-size: 24px; font-weight: 750; letter-spacing: -.02em; line-height: 1.25; color: var(--text-primary); }
-.page-subtitle { max-width: 76ch; margin: 8px 0 0; color: var(--text-muted); font-size: 13.5px; line-height: 1.6; }
-.page-kicker { margin-bottom: 7px; color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
+.page-title { margin: 0; font-size: clamp(24px, 2vw, 28px); font-weight: 780; letter-spacing: -.035em; line-height: 1.2; color: var(--text-primary); }
+.page-subtitle { max-width: 72ch; margin: 7px 0 0; color: var(--text-muted); font-size: 12.5px; line-height: 1.55; }
+.page-kicker { margin-bottom: 5px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
 .page-toolbar, .header-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; flex-shrink: 0; }
 
 /* cards */
@@ -241,6 +274,7 @@ button { font-family: inherit; cursor: pointer; }
 .cell-mono { margin-top: 4px; color: var(--text-muted); font-size: 12px; word-break: break-all; }
 .table-date-text { color: var(--text-muted); font-size: 12px; white-space: nowrap; }
 .path-text, .log-detail, .detail-popover { color: var(--text-secondary); font-size: 12px; line-height: 1.65; white-space: pre-wrap; overflow-wrap: anywhere; }
+.platform-line { display: inline-flex; align-items: center; flex-wrap: wrap; gap: 5px; min-width: 0; }
 
 /* badges/tags */
 .badge-row { display: flex; flex-wrap: wrap; gap: 8px; }
@@ -288,12 +322,12 @@ button { font-family: inherit; cursor: pointer; }
 
 /* primary button — flat, blue glow */
 .el-button.el-button--primary {
-  background: var(--accent) !important; border-color: var(--accent-strong) !important; color: #fff !important;
-  box-shadow: 0 1px 3px rgba(26, 86, 219, 0.4), 0 4px 14px rgba(26, 86, 219, 0.2);
+  background: var(--action) !important; border-color: var(--action) !important; color: #fff !important;
+  box-shadow: 0 7px 18px color-mix(in srgb, var(--action) 22%, transparent);
 }
 .el-button.el-button--primary:not(.is-disabled):hover {
-  background: var(--accent-strong) !important; border-color: var(--accent-strong) !important; color: #fff !important;
-  box-shadow: 0 2px 5px rgba(26, 86, 219, 0.45), 0 6px 18px rgba(26, 86, 219, 0.28);
+  background: var(--action-hover) !important; border-color: var(--action-hover) !important; color: #fff !important;
+  box-shadow: 0 9px 22px color-mix(in srgb, var(--action) 28%, transparent);
 }
 .el-button.is-plain:not(.el-button--danger):not(.el-button--primary) { background: var(--accent-soft) !important; border-color: transparent !important; color: var(--accent) !important; }
 .el-button.el-button--danger.is-plain { background: var(--danger-soft) !important; border-color: transparent !important; color: var(--danger) !important; }
@@ -327,10 +361,10 @@ button { font-family: inherit; cursor: pointer; }
   background: transparent;
 }
 .el-table::before, .el-table__inner-wrapper::before { display: none; }
-.el-table th.el-table__cell { padding: 12px 20px; border-bottom: 2px solid var(--border-base); background: #eef2f8; }
-html[data-theme="dark"] .el-table th.el-table__cell { background: #16223a; }
+.el-table th.el-table__cell { padding: 11px 16px; border-bottom: 1px solid var(--border-subtle); background: var(--surface-muted); }
+html[data-theme="dark"] .el-table th.el-table__cell { background: var(--surface-muted); }
 .el-table th.el-table__cell > .cell { color: var(--text-muted); font-size: 12px; font-weight: 700; letter-spacing: .02em; text-transform: uppercase; }
-.el-table td.el-table__cell { padding: 14px 20px; border-bottom: 1px solid var(--border-subtle); background: transparent; }
+.el-table td.el-table__cell { padding: 13px 16px; border-bottom: 1px solid var(--border-subtle); background: transparent; }
 .el-table tr { background: transparent; }
 .el-table tbody tr:nth-child(even) { background: rgba(15, 23, 42, 0.018); }
 html[data-theme="dark"] .el-table tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.02); }
@@ -351,7 +385,7 @@ html[data-theme="dark"] .el-table tbody tr:nth-child(even) { background: rgba(25
   border-radius: var(--radius-md); border: 1px solid var(--border-base);
   background: var(--surface); box-shadow: var(--shadow-float);
 }
-.el-message-box, .el-popover.el-popper, .el-select__popper.el-popper, .el-picker__popper.el-popper { border-color: var(--border-subtle); background: var(--surface); color: var(--text-primary); box-shadow: var(--shadow-float); }
+.el-message-box, .el-popover.el-popper, .el-select__popper.el-popper, .el-picker__popper.el-popper, .el-dropdown__popper.el-popper { border-color: var(--border-subtle); background: var(--surface); color: var(--text-primary); box-shadow: var(--shadow-float); }
 .el-dropdown__popper.el-popper .el-dropdown-menu { border-color: var(--border-subtle); background: var(--surface); box-shadow: var(--shadow-md); border-radius: var(--radius-sm); }
 .el-dropdown-menu__item.danger-menu-item { color: var(--danger); }
 .el-dialog__header { margin: 0; padding: 20px 24px 10px; }
@@ -368,6 +402,8 @@ html[data-theme="dark"] .el-table tbody tr:nth-child(even) { background: rgba(25
 .el-tabs--border-card > .el-tabs__header { background: transparent; }
 .el-tabs--border-card > .el-tabs__header .el-tabs__item { color: var(--text-secondary); }
 .el-tabs--border-card > .el-tabs__header .el-tabs__item.is-active { color: var(--text-primary); background: var(--surface); }
+.session-recovery-alert { margin-block-end: 16px; }
+.session-recovery-alert .el-alert__description, .recovery-status-copy { overflow-wrap: anywhere; }
 
 /* ============================ Skeleton loading ============================ */
 @keyframes shimmer { 0% { background-position: -400px 0; } 100% { background-position: 400px 0; } }
@@ -388,7 +424,7 @@ html[data-theme="dark"] .el-table tbody tr:nth-child(even) { background: rgba(25
 @media (max-width: 768px) {
   .page-header, .section-header, .toolbar-row { flex-direction: column; }
   .page-title { font-size: 22px; }
-  .page-subtitle { display: none; }
+  .page-subtitle { display: block; font-size: 11px; }
   .surface-card .el-card__body { padding: 14px; }
   .stats-grid, .data-card__grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
   .stat-card { padding: 14px; gap: 8px; }

frontend/src/types.ts

@@ -141,6 +141,8 @@ export interface RecordTask {
   startedAt?: string;
   endedAt?: string;
   durationSeconds?: number;
+  isHiddenArtifactSource: boolean;
+  mergedIntoRecordTaskId?: string;
   uploadStatus?: number;
   postProcessStage?: string;
   postProcessProgressPercent?: number;
@@ -170,6 +172,7 @@ export interface RecordSession {
   id: string;
   liveRoomId: string;
   liveRoomTitle: string;
+  anchorName?: string;
   platform: number;
   roomId: string;
   status: number;
@@ -180,6 +183,8 @@ export interface RecordSession {
   segmentCount: number;
   recorderProcessId?: number;
   errorMessage?: string;
+  isRecovering: boolean;
+  recoveryReason?: string;
   createdAt: string;
   startedAt?: string;
   endedAt?: string;
@@ -318,6 +323,16 @@ export interface UploadTaskListResponse {
   queuedCount: number;
   uploadingCount: number;
   waitingRetryCount: number;
+  matchingRetryableCount: number;
+  queueHealth: UploadQueueHealth;
+}
+
+export interface UploadQueueHealth {
+  state: "Healthy" | "RateLimited" | "AuthenticationBlocked" | "Disabled" | string;
+  isPaused: boolean;
+  reason?: string;
+  retryAt?: string;
+  lastErrorAt?: string;
 }
 
 export interface ManualSegmentCompletedTriggerResult {
@@ -668,6 +683,19 @@ export interface RecoveryOverview {
   storage: StorageGuardStatus;
   liveRooms: RecoverableLiveRoom[];
   finalizations: RecoverableFinalization[];
+  mergedArtifacts: MergedArtifactRecord[];
+}
+
+export interface MergedArtifactRecord {
+  sourceRecordTaskId: string;
+  recordSessionId: string;
+  mergedIntoRecordTaskId?: string;
+  sourceVideoPath?: string;
+  mergedVideoPath?: string;
+  recoveryDirectory?: string;
+  manifestPath?: string;
+  sourceDurationSeconds?: number;
+  createdAt: string;
 }
 
 export interface StorageGuardStatus {
@@ -722,6 +750,34 @@ export interface RecoveryActionResult {
   messages: string[];
 }
 
+export interface RecordingFailureListResponse {
+  items: RecordingFailureItem[];
+  totalCount: number;
+}
+
+export interface RecordingFailureItem {
+  recordTaskId: string;
+  recordSessionId: string;
+  liveRoomId: string;
+  liveRoomTitle: string;
+  roomId: string;
+  platformName: string;
+  segmentIndex: number;
+  failureKind: string;
+  failureLabel: string;
+  recommendedAction: string;
+  errorMessage?: string;
+  filePath?: string;
+  fileSizeBytes?: number;
+  durationSeconds?: number;
+  fileExists: boolean;
+  canAccept: boolean;
+  canRepair: boolean;
+  canRetryRoom: boolean;
+  isRepairing: boolean;
+  createdAt: string;
+}
+
 export interface TranscodeTaskItem {
   task: RecordTask;
   result?: RecordResult;

frontend/src/views/DailyReviewsView.vue

@@ -6,6 +6,7 @@ import axios from "axios";
 import apiClient, { getApiErrorMessage } from "@/api/client";
 import EmptyState from "@/components/ui/EmptyState.vue";
 import MetricCard from "@/components/ui/MetricCard.vue";
+import PlatformMark from "@/components/ui/PlatformMark.vue";
 import { useViewport } from "@/composables/useViewport";
 import type {
   DailyReviewPushResult,
@@ -194,7 +195,9 @@ onMounted(loadReport);
                 <div class="cell-subtitle">{{ row.anchorName || row.roomId }}</div>
               </template>
             </el-table-column>
-            <el-table-column label="平台" width="120" prop="platformName" />
+            <el-table-column label="平台" width="140">
+              <template #default="{ row }"><PlatformMark :name="row.platformName" /></template>
+            </el-table-column>
             <el-table-column label="会话" width="90" prop="sessionCount" />
             <el-table-column label="分片" width="90" prop="segmentCount" />
             <el-table-column label="录制时长" width="120">
@@ -231,7 +234,7 @@ onMounted(loadReport);
             <div class="highlight-item__label">{{ item.label }}</div>
             <div class="highlight-item__title">{{ item.liveRoomTitle }}</div>
             <div class="highlight-item__meta">
-              <span>{{ item.platformName }}</span>
+              <PlatformMark :name="item.platformName" />
               <span>{{ item.roomId }}</span>
               <span>{{ formatDuration(item.durationSeconds) }}</span>
             </div>
@@ -273,7 +276,9 @@ onMounted(loadReport);
                 <div class="cell-subtitle">分片 #{{ row.segmentIndex }}</div>
               </template>
             </el-table-column>
-            <el-table-column label="平台" width="120" prop="platformName" />
+            <el-table-column label="平台" width="140">
+              <template #default="{ row }"><PlatformMark :name="row.platformName" /></template>
+            </el-table-column>
             <el-table-column label="弹幕数" width="100" prop="danmakuCount" />
             <el-table-column label="操作" width="200">
               <template #default="{ row }">

frontend/src/views/DashboardView.vue

@@ -1,10 +1,18 @@
 <script setup lang="ts">
 import { computed, onMounted, ref } from "vue";
 import { useRouter } from "vue-router";
-import { Clock, House, Refresh, Upload, VideoCamera, Warning } from "@element-plus/icons-vue";
+import {
+  ArrowRight,
+  Film,
+  FolderOpened,
+  Plus,
+  Refresh,
+  Upload,
+  Warning
+} from "@element-plus/icons-vue";
 import apiClient, { getApiErrorMessage } from "@/api/client";
 import EmptyState from "@/components/ui/EmptyState.vue";
-import MetricCard from "@/components/ui/MetricCard.vue";
+import PlatformMark from "@/components/ui/PlatformMark.vue";
 import StatusBadge from "@/components/ui/StatusBadge.vue";
 import StorageCapacity from "@/components/ui/StorageCapacity.vue";
 import type { DashboardData, DashboardRecentSession } from "@/types";
@@ -16,19 +24,29 @@ const loadError = ref("");
 const data = ref<DashboardData | null>(null);
 
 const queueTotal = computed(() => (data.value?.pendingTranscodeCount ?? 0) + (data.value?.pendingUploadCount ?? 0));
-const hasAttention = computed(() => Boolean(
-  data.value && (
-    data.value.currentErrorCount > 0 ||
-    data.value.storageStatus.tier !== "Green" ||
-    queueTotal.value > 0
-  )
-));
+const attentionCount = computed(() => {
+  if (!data.value) return 0;
+  return Number(data.value.currentErrorCount > 0)
+    + Number(data.value.storageStatus.tier !== "Green")
+    + Number(queueTotal.value > 0);
+});
+const hasAttention = computed(() => attentionCount.value > 0);
+const activeSessions = computed(() => data.value?.recentSessions.filter((item) => [1, 2, 3, 7].includes(item.status)).slice(0, 2) ?? []);
 
 function formatDuration(seconds?: number) {
   if (typeof seconds !== "number" || !Number.isFinite(seconds) || seconds <= 0) return "--";
   const hours = Math.floor(seconds / 3600);
   const minutes = Math.floor((seconds % 3600) / 60);
-  return hours > 0 ? `${hours} 小时 ${minutes} 分` : `${minutes} 分钟`;
+  if (hours > 0) return `${hours} 小时 ${minutes} 分`;
+  return `${Math.max(1, minutes)} 分钟`;
+}
+
+function formatTimer(seconds?: number) {
+  if (typeof seconds !== "number" || !Number.isFinite(seconds) || seconds < 0) return "--:--:--";
+  const hours = Math.floor(seconds / 3600).toString().padStart(2, "0");
+  const minutes = Math.floor((seconds % 3600) / 60).toString().padStart(2, "0");
+  const remainder = Math.floor(seconds % 60).toString().padStart(2, "0");
+  return `${hours}:${minutes}:${remainder}`;
 }
 
 function formatDataSize(bytes?: number) {
@@ -36,17 +54,31 @@ function formatDataSize(bytes?: number) {
   if (bytes < 1024) return `${bytes} B`;
   if (bytes < 1024 ** 2) return `${(bytes / 1024).toFixed(1)} KB`;
   if (bytes < 1024 ** 3) return `${(bytes / 1024 ** 2).toFixed(1)} MB`;
-  return `${(bytes / 1024 ** 3).toFixed(2)} GB`;
+  return `${(bytes / 1024 ** 3).toFixed(1)} GB`;
 }
 
 function formatDate(value?: string) {
-  return value ? new Date(value).toLocaleString() : "--";
+  if (!value) return "--";
+  return new Date(value).toLocaleString([], { month: "2-digit", day: "2-digit", hour: "2-digit", minute: "2-digit" });
+}
+
+function formatRelativeHint(value?: string | null) {
+  if (!value) return "暂无等待中的任务";
+  const elapsed = Math.max(0, Date.now() - new Date(value).getTime());
+  const minutes = Math.floor(elapsed / 60_000);
+  if (minutes < 1) return "最早任务刚刚进入队列";
+  if (minutes < 60) return `最早任务已等待 ${minutes} 分钟`;
+  return `最早任务已等待 ${Math.floor(minutes / 60)} 小时`;
 }
 
 function sessionStatus(session: DashboardRecentSession) {
   return sessionStatusLabelMap[session.status] ?? "未知";
 }
 
+function roomInitial(session: DashboardRecentSession) {
+  return session.liveRoomTitle.trim().slice(0, 1) || "播";
+}
+
 async function loadData() {
   loading.value = true;
   loadError.value = "";
@@ -54,7 +86,7 @@ async function loadData() {
     const { data: result } = await apiClient.get<DashboardData>("/dashboard");
     data.value = result;
   } catch (error) {
-    loadError.value = getApiErrorMessage(error, "仪表盘数据加载失败。");
+    loadError.value = getApiErrorMessage(error, "运行中心数据加载失败。");
   } finally {
     loading.value = false;
   }
@@ -67,12 +99,13 @@ onMounted(loadData);
   <div class="page-stack dashboard-page">
     <div class="page-header">
       <div>
-        <div class="page-kicker">运行中心</div>
-        <h1 class="page-title">仪表盘</h1>
-        <p class="page-subtitle">先处理异常与积压，再查看录制产出和最近活动。</p>
+        <div class="page-kicker">OPERATIONS</div>
+        <h1 class="page-title">运行中心</h1>
+        <p class="page-subtitle">优先处理异常和积压，再关注正在进行的录制与今日产出。</p>
       </div>
       <div class="header-actions">
-        <el-button :icon="Refresh" :loading="loading" @click="loadData">刷新</el-button>
+        <el-button :icon="Refresh" :loading="loading" @click="loadData">刷新状态</el-button>
+        <el-button type="primary" :icon="Plus" @click="router.push({ name: 'live-rooms', query: { action: 'create' } })">添加直播间</el-button>
       </div>
     </div>
 
@@ -81,120 +114,207 @@ onMounted(loadData);
 
     <template v-else-if="data">
       <section v-if="hasAttention" class="attention-bar" aria-label="需要关注">
-        <div class="attention-bar__icon"><el-icon><Warning /></el-icon></div>
-        <div class="attention-bar__copy">
-          <strong>有需要关注的运行状态</strong>
+        <span class="attention-bar__icon"><el-icon><Warning /></el-icon></span>
+        <span class="attention-bar__copy">
+          <strong>有 {{ attentionCount }} 项需要关注</strong>
           <span>
-            最近 30 分钟 {{ data.currentErrorCount }} 个异常，
-            {{ queueTotal }} 个处理任务等待完成，存储状态为 {{ data.storageStatus.tier === "Green" ? "正常" : "受限" }}。
+            最近 30 分钟 {{ data.currentErrorCount }} 个异常，{{ queueTotal }} 个处理任务等待完成，
+            存储状态{{ data.storageStatus.tier === "Green" ? "正常" : "已触发预警" }}。
           </span>
-        </div>
-        <el-button size="small" @click="router.push({ name: 'logs' })">查看日志</el-button>
+        </span>
+        <el-button size="small" @click="router.push({ name: queueTotal > 0 ? 'upload-tasks' : 'logs' })">立即处理</el-button>
       </section>
 
       <div v-if="data.recentErrorCount > data.currentErrorCount" class="history-note">
-        近 24 小时共记录 {{ data.recentErrorCount }} 个历史异常；最近 30 分钟为 {{ data.currentErrorCount }} 个，历史记录不代表系统当前仍有故障。
+        <span>近 24 小时共记录 {{ data.recentErrorCount }} 个历史异常；当前状态以最近 30 分钟的 {{ data.currentErrorCount }} 个异常为准。</span>
         <el-button link size="small" @click="router.push({ name: 'logs' })">查看历史日志</el-button>
       </div>
 
-      <div class="dashboard-metrics">
-        <MetricCard label="正在录制" :value="data.activeRecordingCount" description="当前活动录制会话" :icon="VideoCamera" />
-        <MetricCard label="在线直播间" :value="`${data.liveRoomCount} / ${data.totalRoomCount}`" description="在线 / 已接入" :icon="House" />
-        <MetricCard label="今日录制" :value="formatDuration(data.todayRecordingSeconds)" :description="`${formatDataSize(data.todayDataBytes)} · ${data.todayDanmakuCount.toLocaleString()} 条弹幕`" :icon="Clock" />
-        <MetricCard label="待处理" :value="queueTotal" :description="`${data.pendingTranscodeCount} 转码 · ${data.pendingUploadCount} 上传`" :icon="Upload" />
+      <div class="primary-grid">
+        <section class="live-hero" aria-label="当前录制概况">
+          <div class="live-hero__top">
+            <span class="live-hero__label"><i class="live-pulse" />正在录制</span>
+            <span class="live-hero__badge">{{ data.activeRecordingCount }} 路活跃</span>
+          </div>
+          <div class="live-hero__count">{{ String(data.activeRecordingCount).padStart(2, "0") }}<small>当前录制会话</small></div>
+
+          <div v-if="activeSessions.length" class="active-session-list">
+            <button
+              v-for="session in activeSessions"
+              :key="session.id"
+              class="active-session"
+              type="button"
+              @click="router.push({ name: 'record-session-detail', params: { id: session.id } })"
+            >
+              <span class="active-session__avatar">{{ roomInitial(session) }}</span>
+              <span class="active-session__copy">
+                <strong>{{ session.liveRoomTitle }}</strong>
+                <span><PlatformMark :name="session.platformName" /> · {{ session.segmentCount }} 个分片</span>
+              </span>
+              <time>{{ formatTimer(session.durationSeconds) }}</time>
+            </button>
+          </div>
+          <div v-else class="live-hero__empty">
+            {{ data.activeRecordingCount > 0 ? "活动会话将在下一次状态刷新后显示" : "当前没有正在录制的直播间" }}
+          </div>
+        </section>
+
+        <el-card class="surface-card process-card" shadow="never">
+          <div class="panel-heading panel-heading--bordered">
+            <div><h2>处理概况</h2><p>录制后的自动化流水线</p></div>
+            <el-button link @click="router.push({ name: 'transcode-tasks' })">查看队列</el-button>
+          </div>
+          <div class="process-list">
+            <button class="process-row" type="button" @click="router.push({ name: 'transcode-tasks' })">
+              <span class="process-row__icon"><el-icon><Film /></el-icon></span>
+              <span><strong>等待转码</strong><small>{{ formatRelativeHint(data.oldestTranscodeUpdatedAt) }}</small></span>
+              <b>{{ data.pendingTranscodeCount }}</b>
+            </button>
+            <button class="process-row" type="button" @click="router.push({ name: 'upload-tasks' })">
+              <span class="process-row__icon"><el-icon><Upload /></el-icon></span>
+              <span><strong>等待上传</strong><small>{{ data.stalledUploadCount ?? 0 }} 个停滞 · {{ data.uploadCleanupFailureCount ?? 0 }} 个待清理</small></span>
+              <b>{{ data.pendingUploadCount }}</b>
+            </button>
+            <button class="process-row" type="button" @click="router.push({ name: 'media-browser' })">
+              <span class="process-row__icon"><el-icon><FolderOpened /></el-icon></span>
+              <span><strong>今日产出</strong><small>{{ formatDuration(data.todayRecordingSeconds) }} · {{ data.todayDanmakuCount.toLocaleString() }} 条弹幕</small></span>
+              <b>{{ formatDataSize(data.todayDataBytes) }}</b>
+            </button>
+          </div>
+        </el-card>
       </div>
 
-      <div class="operations-grid">
+      <div class="secondary-grid">
         <el-card class="surface-card storage-card" shadow="never">
-          <div class="panel-heading">
-            <div><h2>存储空间</h2><p>输出目录实际容量与录制保护状态。</p></div>
+          <div class="panel-heading panel-heading--bordered">
+            <div><h2>存储容量</h2><p>录制目录与保护阈值</p></div>
           </div>
           <StorageCapacity :status="data.storageStatus" />
         </el-card>
 
-        <el-card class="surface-card queue-card" shadow="never">
-          <div class="panel-heading">
-            <div><h2>处理队列</h2><p>需要系统继续处理的本地文件。</p></div>
-          </div>
-          <button class="queue-row" type="button" @click="router.push({ name: 'transcode-tasks' })">
-            <span><strong>待转码</strong><small>FFmpeg 后处理</small></span><b>{{ data.pendingTranscodeCount }}</b>
-          </button>
-          <button class="queue-row" type="button" @click="router.push({ name: 'upload-tasks' })">
-            <span><strong>待上传</strong><small>远端归档</small></span><b>{{ data.pendingUploadCount }}</b>
-          </button>
-          <div v-if="data.stalledUploadCount > 0" class="queue-volume">
-            <span>上传停滞（超过 60 分钟）</span><strong>{{ data.stalledUploadCount }}</strong>
-          </div>
-          <div v-if="data.uploadCleanupFailureCount > 0" class="queue-volume">
-            <span>本地清理等待重试</span><strong>{{ data.uploadCleanupFailureCount }}</strong>
-          </div>
-          <div class="queue-volume"><span>积压数据量</span><strong>{{ formatDataSize(data.queuedDataBytes) }}</strong></div>
-        </el-card>
-      </div>
-
-      <div class="activity-grid">
         <el-card class="surface-card activity-card" shadow="never">
-          <div class="panel-heading">
-            <div><h2>最近录制</h2><p>最新创建的录制会话。</p></div>
-            <el-button link @click="router.push({ name: 'record-tasks' })">查看全部</el-button>
+          <div class="panel-heading panel-heading--bordered">
+            <div><h2>最近动态</h2><p>最新创建的录制会话</p></div>
+            <el-button link @click="router.push({ name: 'record-tasks' })">全部会话</el-button>
           </div>
           <EmptyState v-if="data.recentSessions.length === 0" title="暂无录制会话" description="直播开始录制后会出现在这里" />
           <button
-            v-for="session in data.recentSessions"
+            v-for="session in data.recentSessions.slice(0, 4)"
             v-else
             :key="session.id"
             class="activity-row"
             type="button"
             @click="router.push({ name: 'record-session-detail', params: { id: session.id } })"
           >
+            <i class="activity-row__dot" :class="{ 'is-error': session.status === 5, 'is-warn': [0, 1, 3, 7].includes(session.status) }" />
             <span class="activity-row__main"><strong>{{ session.liveRoomTitle }}</strong><small>{{ formatDate(session.startedAt) }} · {{ session.segmentCount }} 个分片</small></span>
             <StatusBadge :label="sessionStatus(session)" :status="session.status" />
           </button>
         </el-card>
-
-        <el-card class="surface-card activity-card" shadow="never">
-          <div class="panel-heading">
-            <div><h2>今日录制排行</h2><p>按录制时长排序的直播间。</p></div>
-            <el-button link @click="router.push({ name: 'live-rooms' })">直播间</el-button>
-          </div>
-          <EmptyState v-if="data.topRooms.length === 0" title="今日暂无录制" description="完成录制后会生成今日排行" />
-          <button v-for="(room, index) in data.topRooms" v-else :key="room.liveRoomId" class="activity-row" type="button" @click="router.push({ name: 'live-rooms' })">
-            <span class="rank">{{ index + 1 }}</span>
-            <span class="activity-row__main"><strong>{{ room.title || room.anchorName || room.roomId }}</strong><small>{{ room.platformName }} · {{ room.sessionCount }} 个会话</small></span>
-            <span class="activity-row__value">{{ formatDuration(room.totalDurationSeconds) }}</span>
-          </button>
-        </el-card>
       </div>
+
+      <el-card class="surface-card ranking-card" shadow="never">
+        <div class="panel-heading panel-heading--bordered">
+          <div><h2>今日录制排行</h2><p>按录制时长排序的直播间</p></div>
+          <el-button link @click="router.push({ name: 'live-rooms' })">直播间 <el-icon class="el-icon--right"><ArrowRight /></el-icon></el-button>
+        </div>
+        <EmptyState v-if="data.topRooms.length === 0" title="今日暂无录制" description="完成录制后会生成今日排行" />
+        <div v-else class="ranking-list">
+          <button v-for="(room, index) in data.topRooms" :key="room.liveRoomId" class="ranking-row" type="button" @click="router.push({ name: 'live-rooms' })">
+            <span class="rank" :class="`rank--${index + 1}`">{{ index + 1 }}</span>
+            <span class="activity-row__main">
+              <strong>{{ room.title || room.anchorName || room.roomId }}</strong>
+              <small><PlatformMark :name="room.platformName" /> · {{ room.sessionCount }} 个会话</small>
+            </span>
+            <span class="ranking-row__duration">{{ formatDuration(room.totalDurationSeconds) }}</span>
+          </button>
+        </div>
+      </el-card>
     </template>
   </div>
 </template>
 
 <style scoped>
-.dashboard-page { gap: 18px; }
-.attention-bar { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border: 1px solid color-mix(in srgb, var(--warning) 28%, var(--border-subtle)); border-radius: var(--radius-md); background: var(--warning-soft); }
-.attention-bar__icon { display: grid; place-items: center; width: 34px; height: 34px; flex: 0 0 auto; border-radius: 50%; color: var(--warning); background: var(--surface); }
-.attention-bar__copy { display: grid; flex: 1; min-width: 0; gap: 3px; }
-.attention-bar__copy strong { font-size: 14px; }
-.attention-bar__copy span { color: var(--text-secondary); font-size: 12.5px; line-height: 1.5; }
-.history-note { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 9px 12px; border-radius: var(--radius-sm); background: var(--surface-subtle); color: var(--text-muted); font-size: 12px; line-height: 1.5; }
-.dashboard-metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
-.operations-grid { display: grid; grid-template-columns: minmax(0, 1.8fr) minmax(280px, .8fr); gap: 14px; }
-.activity-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
-.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
-.panel-heading h2 { margin: 0; font-size: 16px; }
-.panel-heading p { margin: 5px 0 0; color: var(--text-muted); font-size: 12.5px; }
-.queue-card :deep(.el-card__body), .activity-card :deep(.el-card__body) { display: grid; }
-.queue-row, .activity-row { display: flex; align-items: center; width: 100%; gap: 12px; padding: 12px; border: 0; border-top: 1px solid var(--border-subtle); background: transparent; color: var(--text-primary); text-align: left; }
-.queue-row:hover, .activity-row:hover { background: var(--surface-hover); }
-.queue-row span, .activity-row__main { display: grid; flex: 1; min-width: 0; gap: 4px; }
-.queue-row small, .activity-row small { color: var(--text-muted); font-size: 11.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
-.queue-row b { font-size: 24px; font-variant-numeric: tabular-nums; }
-.queue-volume { display: flex; justify-content: space-between; gap: 12px; padding: 14px 12px 0; color: var(--text-muted); font-size: 12px; }
-.queue-volume strong { color: var(--text-primary); font-size: 14px; }
-.activity-row__main strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13.5px; }
-.activity-row__value { flex: 0 0 auto; color: var(--text-secondary); font-size: 12.5px; font-weight: 700; }
-.rank { display: grid; place-items: center; width: 26px; height: 26px; flex: 0 0 auto; border-radius: 7px; background: var(--surface-muted); color: var(--text-muted); font-weight: 800; }
-@media (max-width: 1100px) { .dashboard-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); } .operations-grid { grid-template-columns: 1fr; } }
-@media (max-width: 768px) { .activity-grid { grid-template-columns: 1fr; } .attention-bar { align-items: flex-start; flex-wrap: wrap; } .attention-bar .el-button { width: 100%; } }
-@media (max-width: 480px) { .dashboard-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; } }
+.dashboard-page { gap: 14px; }
+.attention-bar { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 13px; padding: 13px 15px; border: 1px solid color-mix(in srgb, var(--warning) 27%, var(--border-subtle)); border-radius: 11px; background: var(--warning-soft); }
+.attention-bar__icon { width: 32px; height: 32px; display: grid; place-items: center; overflow: visible; border-radius: 9px; color: var(--warning); background: var(--surface); }
+.attention-bar__icon .el-icon { display: grid; place-items: center; }
+.attention-bar__copy { display: grid; min-width: 0; gap: 2px; }
+.attention-bar__copy strong { font-size: 12.5px; }
+.attention-bar__copy > span { color: var(--text-secondary); font-size: 11px; line-height: 1.55; }
+.history-note { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 9px 12px; border-radius: var(--radius-sm); background: var(--surface-subtle); color: var(--text-muted); font-size: 11.5px; line-height: 1.5; }
+.primary-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(290px, .72fr); gap: 14px; }
+.secondary-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
+.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
+.panel-heading--bordered { margin: -18px -18px 0; padding: 17px 18px; border-bottom: 1px solid var(--border-subtle); }
+.panel-heading h2 { margin: 0; font-size: 14px; letter-spacing: -.01em; }
+.panel-heading p { margin: 4px 0 0; color: var(--text-muted); font-size: 11px; }
+.live-hero { position: relative; min-height: 282px; overflow: hidden; padding: 20px; border-radius: var(--radius-md); color: #f7f9ff; background: radial-gradient(circle at 88% 8%, rgba(104, 220, 235, .22), transparent 31%), linear-gradient(135deg, #185ecf, #3f67d8 54%, #6658ce); box-shadow: 0 16px 38px rgba(24, 94, 207, .22); }
+:global(html[data-theme="dark"]) .live-hero { background: radial-gradient(circle at 88% 8%, rgba(104, 220, 235, .16), transparent 31%), linear-gradient(135deg, #17498f, #304f9d 54%, #56469f); box-shadow: 0 16px 38px rgba(0, 0, 0, .28); }
+.live-hero::after { content: ""; position: absolute; right: -65px; top: -90px; width: 260px; height: 260px; border: 45px solid rgba(255,255,255,.07); border-radius: 50%; pointer-events: none; }
+.live-hero__top { position: relative; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
+.live-hero__label { display: flex; align-items: center; gap: 8px; color: #d7e3ff; font-size: 11px; font-weight: 700; }
+.live-pulse { width: 8px; height: 8px; border-radius: 50%; background: #ff8b94; box-shadow: 0 0 0 5px rgba(255, 139, 148, .18); }
+.live-hero__badge { padding: 4px 9px; border-radius: 99px; color: #ffe8ec; background: rgba(255, 139, 148, .18); font-size: 11px; font-weight: 700; }
+.live-hero__count { position: relative; z-index: 1; margin-top: 15px; font-size: 38px; line-height: 1; font-weight: 800; letter-spacing: -.05em; }
+.live-hero__count small { margin-left: 7px; color: #d7e3ff; font-size: 12px; font-weight: 500; letter-spacing: 0; }
+.active-session-list { position: relative; z-index: 1; display: grid; }
+.active-session { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 11px; width: 100%; padding: 15px 0; border: 0; border-top: 1px solid rgba(255,255,255,.22); color: inherit; background: transparent; text-align: left; }
+.active-session:first-child { margin-top: 18px; }
+.active-session:hover strong { text-decoration: underline; text-underline-offset: 3px; }
+.active-session__avatar { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; color: #244fa9; background: #e8efff; font-size: 13px; font-weight: 800; }
+.active-session__copy { display: grid; min-width: 0; gap: 4px; }
+.active-session__copy strong { overflow: hidden; color: #f7f9ff; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
+.active-session__copy > span { display: flex; align-items: center; color: #d7e3ff; font-size: 10px; }
+.active-session__copy :deep(.platform-mark) { color: inherit; }
+.active-session time { color: #f7f9ff; font-family: var(--font-mono); font-size: 15px; font-weight: 700; }
+.live-hero__empty { position: relative; z-index: 1; margin-top: 32px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.22); color: #d7e3ff; font-size: 12px; }
+.process-card :deep(.el-card__body), .activity-card :deep(.el-card__body), .ranking-card :deep(.el-card__body), .storage-card :deep(.el-card__body) { display: grid; }
+.process-list { display: grid; }
+.process-row { display: grid; grid-template-columns: 38px minmax(0, 1fr) auto; align-items: center; gap: 11px; width: 100%; padding: 14px 0; border: 0; border-bottom: 1px solid var(--border-subtle); color: var(--text-primary); background: transparent; text-align: left; }
+.process-row:last-child { border-bottom: 0; }
+.process-row__icon { width: 34px; height: 34px; display: grid; place-items: center; overflow: visible; border-radius: 9px; color: var(--accent); background: var(--accent-soft); }
+.process-row:nth-child(2) .process-row__icon { color: var(--purple); background: var(--purple-soft); }
+.process-row:nth-child(3) .process-row__icon { color: var(--cyan); background: var(--cyan-soft); }
+.process-row__icon .el-icon { display: grid; place-items: center; }
+.process-row > span:nth-child(2) { display: grid; min-width: 0; gap: 2px; }
+.process-row strong { font-size: 12px; }
+.process-row small { overflow: hidden; color: var(--text-muted); font-size: 10.5px; text-overflow: ellipsis; white-space: nowrap; }
+.process-row b { max-width: 96px; overflow: hidden; font-size: 18px; font-variant-numeric: tabular-nums; text-overflow: ellipsis; white-space: nowrap; }
+.storage-card :deep(.storage-capacity) { padding-top: 18px; }
+.activity-row, .ranking-row { display: flex; align-items: center; width: 100%; gap: 10px; padding: 12px 0; border: 0; border-bottom: 1px solid var(--border-subtle); background: transparent; color: var(--text-primary); text-align: left; }
+.activity-row:last-child, .ranking-row:last-child { border-bottom: 0; }
+.activity-row:hover, .ranking-row:hover, .process-row:hover { color: var(--accent); }
+.activity-row__dot { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: var(--success); }
+.activity-row__dot.is-warn { background: var(--warning); }
+.activity-row__dot.is-error { background: var(--danger); }
+.activity-row__main { display: grid; flex: 1; min-width: 0; gap: 4px; }
+.activity-row__main strong { overflow: hidden; color: var(--text-primary); font-size: 11.5px; text-overflow: ellipsis; white-space: nowrap; }
+.activity-row__main small { display: flex; align-items: center; min-width: 0; overflow: hidden; color: var(--text-muted); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
+.ranking-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 24px; }
+.rank { width: 26px; height: 26px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 7px; color: var(--text-muted); background: var(--surface-muted); font-size: 11px; font-weight: 800; }
+.rank--1 { color: #8a5700; background: #fff1cb; }
+.rank--2 { color: var(--accent); background: var(--accent-soft); }
+.rank--3 { color: #8b4d2e; background: #f9e7dd; }
+.ranking-row__duration { flex: 0 0 auto; color: var(--text-secondary); font-size: 11.5px; font-weight: 700; }
+@media (max-width: 1100px) {
+  .primary-grid { grid-template-columns: 1fr; }
+  .live-hero { min-height: auto; }
+  .ranking-list { grid-template-columns: 1fr; }
+}
+@media (max-width: 768px) {
+  .secondary-grid { grid-template-columns: 1fr; }
+  .attention-bar { grid-template-columns: auto minmax(0, 1fr); align-items: start; }
+  .attention-bar .el-button { grid-column: 1 / -1; width: 100%; }
+  .history-note { align-items: flex-start; flex-direction: column; }
+  .live-hero { padding: 17px; }
+  .live-hero__count { font-size: 34px; }
+  .active-session time { font-size: 12px; }
+}
+@media (max-width: 420px) {
+  .header-actions { width: 100%; }
+  .header-actions .el-button { flex: 1; margin-left: 0; }
+  .active-session { grid-template-columns: auto minmax(0, 1fr); }
+  .active-session time { grid-column: 2; }
+}
 </style>

frontend/src/views/LiveRoomsView.vue

@@ -1,9 +1,11 @@
 <script setup lang="ts">
 import { computed, onBeforeUnmount, onMounted, reactive, ref, watch } from "vue";
 import { ElMessage } from "element-plus";
+import { useRoute } from "vue-router";
 import apiClient, { getApiErrorMessage } from "@/api/client";
 import EmptyState from "@/components/ui/EmptyState.vue";
 import MetricCard from "@/components/ui/MetricCard.vue";
+import PlatformMark from "@/components/ui/PlatformMark.vue";
 import RightDrawer from "@/components/ui/RightDrawer.vue";
 import SafeAvatar from "@/components/ui/SafeAvatar.vue";
 import StatusBadge from "@/components/ui/StatusBadge.vue";
@@ -25,6 +27,7 @@ import { House, RefreshRight, SwitchButton, VideoCamera } from "@element-plus/ic
 
 const inheritValue = "__inherit__";
 const AUTO_REFRESH_INTERVAL_MS = 15000;
+const route = useRoute();
 
 const loading = ref(false);
 const submitLoading = ref(false);
@@ -687,6 +690,7 @@ function nullableStringFromSelect(value: string | number) {
 
 onMounted(async () => {
   await loadRooms();
+  if (route.query.action === "create") openCreateDialog();
   startAutoRefresh();
   document.addEventListener("visibilitychange", handleVisibilityChange);
 });
@@ -787,7 +791,7 @@ onBeforeUnmount(() => {
               :status="row.currentRecordingState"
               context="recording"
             />
-            <StatusBadge :label="row.platformName || '--'" :status="row.platformName || 'unknown'" />
+            <PlatformMark :name="row.platformName" />
             <StatusBadge v-if="row.isPinned" label="置顶" status="completed" size="sm" />
             <StatusBadge v-if="row.isPriority" label="重点" status="retrying" size="sm" />
           </div>
@@ -892,7 +896,7 @@ onBeforeUnmount(() => {
                   <div class="cell-title">{{ row.title || row.anchorName || row.roomId }}</div>
                   <div class="cell-subtitle">{{ row.anchorName || "未知主播" }}</div>
                   <div class="config-summary">
-                    <span>{{ row.platformName || "--" }}</span>
+                    <PlatformMark :name="row.platformName" />
                     <span>{{ row.roomId || "--" }}</span>
                     <span>{{ formatPollingInterval(row.pollingIntervalSecondsOverride) }}</span>
                   </div>
@@ -1025,7 +1029,7 @@ onBeforeUnmount(() => {
             :status="activeRoom.currentRecordingState"
             context="recording"
           />
-          <StatusBadge :label="activeRoom.platformName || '--'" :status="activeRoom.platformName || 'unknown'" />
+          <PlatformMark :name="activeRoom.platformName" />
         </div>
 
         <el-descriptions :column="1" border class="detail-panel__descriptions">
@@ -1033,7 +1037,7 @@ onBeforeUnmount(() => {
             {{ activeRoom.title || activeRoom.anchorName || activeRoom.roomId || "--" }}
           </el-descriptions-item>
           <el-descriptions-item label="平台 + Room ID">
-            {{ activeRoom.platformName || "--" }} · {{ activeRoom.roomId || "--" }}
+            <span class="platform-room-id"><PlatformMark :name="activeRoom.platformName" /><span>· {{ activeRoom.roomId || "--" }}</span></span>
           </el-descriptions-item>
           <el-descriptions-item label="直播状态">
             {{ roomAvailabilityLabel(activeRoom) }}
@@ -1453,6 +1457,7 @@ onBeforeUnmount(() => {
 </template>
 
 <style scoped>
+.platform-room-id { display: inline-flex; align-items: center; gap: 6px; }
 .page-stack {
   display: grid;
   gap: 24px;
@@ -1691,6 +1696,10 @@ onBeforeUnmount(() => {
   background: var(--surface-muted);
 }
 
+.detail-panel__hero > div {
+  min-width: 0;
+}
+
 .detail-panel__title {
   color: var(--text-primary);
   font-size: 18px;
@@ -1922,6 +1931,17 @@ onBeforeUnmount(() => {
 }
 
 @media (max-width: 640px) {
+  .detail-panel__hero {
+    align-items: flex-start;
+    gap: 12px;
+    padding: 12px;
+  }
+
+  .detail-panel__descriptions :deep(.el-descriptions__label) {
+    width: 104px;
+    min-width: 104px;
+  }
+
   .header-actions :deep(.el-space__item) {
     width: 100%;
   }

frontend/src/views/LoginView.vue

@@ -2,7 +2,7 @@
 import { computed, reactive, ref } from "vue";
 import { useRouter } from "vue-router";
 import { ElMessage } from "element-plus";
-import { Lock, Monitor, Moon, Sunny, User } from "@element-plus/icons-vue";
+import { ArrowRight, Lock, Monitor, Moon, Sunny, User, VideoCamera } from "@element-plus/icons-vue";
 import { getApiErrorMessage, isBackendUnavailableError } from "@/api/client";
 import { useBackendStatus } from "@/composables/useBackendStatus";
 import { useUiPreferences } from "@/composables/useUiPreferences";
@@ -37,7 +37,7 @@ async function handleLogin() {
   try {
     await authStore.login(form.username, form.password);
     ElMessage.success("登录成功");
-    await router.push({ name: "live-rooms" });
+    await router.push({ name: "dashboard" });
   } catch (error) {
     ElMessage.error(
       isBackendUnavailableError(error)
@@ -52,14 +52,22 @@ async function handleLogin() {
 
 <template>
   <div class="login-screen">
-    <section class="login-panel surface-card">
-      <div class="login-panel__header">
-        <div>
-          <div class="login-panel__eyebrow">Live Recorder</div>
-          <h1 class="login-panel__title">登录</h1>
-        </div>
+    <section class="login-brand" aria-label="Live Recorder 产品介绍">
+      <div class="login-brand__logo">
+        <span><el-icon :size="22"><VideoCamera /></el-icon></span>
+        <strong>Live Recorder</strong>
+      </div>
+      <div class="login-brand__message">
+        <span class="login-brand__status"><i />本地服务运行正常</span>
+        <h1>让每一次开播，<br>都有迹可循。</h1>
+        <p>集中监控直播状态、自动完成录制与归档，并在异常发生时第一时间告诉你。</p>
+      </div>
+      <div class="login-brand__meta">SELF-HOSTED · PRIVATE · RELIABLE</div>
+    </section>
 
-        <el-select v-model="themeMode" size="small" class="login-panel__theme-select">
+    <section class="login-panel">
+      <div class="login-panel__toolbar">
+        <el-select v-model="themeMode" size="small" aria-label="界面主题" class="login-panel__theme-select">
           <template #prefix>
             <el-icon><component :is="currentThemeIcon" /></el-icon>
           </template>
@@ -69,41 +77,49 @@ async function handleLogin() {
         </el-select>
       </div>
 
-      <el-alert
-        v-if="backendUnavailable"
-        class="login-panel__alert"
-        type="error"
-        :closable="false"
-        show-icon
-        title="后端服务暂时不可用"
-        :description="backendMessage"
-      />
+      <div class="login-card surface-card">
+        <div class="login-card__header">
+          <div class="login-panel__eyebrow">LIVE RECORDER</div>
+          <h2 class="login-panel__title">欢迎回来</h2>
+          <p>登录后进入 Live Recorder 运行中心</p>
+        </div>
 
-      <el-form label-position="top" class="login-form" @submit.prevent="handleLogin">
-        <el-form-item label="用户名">
-          <el-input
-            v-model="form.username"
-            :prefix-icon="User"
-            autocomplete="username"
-            spellcheck="false"
-          />
-        </el-form-item>
+        <el-alert
+          v-if="backendUnavailable"
+          class="login-panel__alert"
+          type="error"
+          :closable="false"
+          show-icon
+          title="后端服务暂时不可用"
+          :description="backendMessage"
+        />
 
-        <el-form-item label="密码">
-          <el-input
-            v-model="form.password"
-            :prefix-icon="Lock"
-            type="password"
-            autocomplete="current-password"
-            show-password
-            @keyup.enter="handleLogin"
-          />
-        </el-form-item>
+        <el-form label-position="top" class="login-form" @submit.prevent="handleLogin">
+          <el-form-item label="用户名">
+            <el-input
+              v-model="form.username"
+              :prefix-icon="User"
+              autocomplete="username"
+              spellcheck="false"
+            />
+          </el-form-item>
 
-        <el-button class="login-form__submit" type="primary" :loading="loading" @click="handleLogin">
-          登录
-        </el-button>
-      </el-form>
+          <el-form-item label="密码">
+            <el-input
+              v-model="form.password"
+              :prefix-icon="Lock"
+              type="password"
+              autocomplete="current-password"
+              show-password
+              @keyup.enter="handleLogin"
+            />
+          </el-form-item>
+
+          <el-button class="login-form__submit" type="primary" :loading="loading" @click="handleLogin">
+            登录控制台 <el-icon class="el-icon--right"><ArrowRight /></el-icon>
+          </el-button>
+        </el-form>
+      </div>
     </section>
   </div>
 </template>
@@ -112,67 +128,48 @@ async function handleLogin() {
 .login-screen {
   min-height: 100vh;
   display: grid;
-  place-items: center;
-  padding: 24px;
+  grid-template-columns: minmax(420px, .95fr) minmax(480px, 1.05fr);
+  background: var(--surface);
 }
-
-.login-panel {
-  width: min(100%, 420px);
-  padding: 24px;
+.login-brand { position: relative; display: flex; flex-direction: column; min-height: 100vh; overflow: hidden; padding: clamp(32px, 5vw, 68px); border-right: 1px solid var(--border-subtle); background: radial-gradient(circle at 12% 8%, rgba(86,137,255,.18), transparent 34%), radial-gradient(circle at 92% 88%, rgba(146,119,255,.16), transparent 36%), linear-gradient(145deg, var(--accent-soft-2), var(--surface) 58%, var(--purple-soft)); }
+.login-brand::after { content: ""; position: absolute; right: -170px; bottom: -180px; width: 480px; height: 480px; border: 75px solid color-mix(in srgb, var(--accent) 7%, transparent); border-radius: 50%; }
+.login-brand__logo { position: relative; z-index: 1; display: flex; align-items: center; gap: 12px; color: var(--text-primary); font-size: 15px; }
+.login-brand__logo > span { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; color: #fff; background: var(--action); box-shadow: 0 9px 24px color-mix(in srgb, var(--action) 26%, transparent); }
+.login-brand__message { position: relative; z-index: 1; width: min(100%, 570px); margin: auto 0; }
+.login-brand__status { display: inline-flex; align-items: center; gap: 9px; color: var(--success); font-size: 11px; font-weight: 750; }
+.login-brand__status i { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 5px color-mix(in srgb, var(--success) 14%, transparent); }
+.login-brand__message h1 { margin: 24px 0 0; color: var(--text-primary); font-size: clamp(40px, 5vw, 66px); font-weight: 800; letter-spacing: -.065em; line-height: 1.08; }
+.login-brand__message p { max-width: 500px; margin: 24px 0 0; color: var(--text-secondary); font-size: 14px; line-height: 1.8; }
+.login-brand__meta { position: relative; z-index: 1; color: var(--text-muted); font-size: 9px; font-weight: 750; letter-spacing: .18em; }
+.login-panel { position: relative; display: grid; place-items: center; min-height: 100vh; padding: 70px clamp(24px, 7vw, 96px); background: var(--surface); }
+.login-panel__toolbar { position: absolute; top: 24px; right: 28px; }
+.login-card { width: min(100%, 420px); padding: 30px; box-shadow: var(--shadow-sm); }
+.login-card__header { margin-bottom: 24px; }
+.login-card__header p { margin: 8px 0 0; color: var(--text-muted); font-size: 12px; }
+.login-panel__eyebrow { color: var(--accent); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
+.login-panel__title { margin: 7px 0 0; color: var(--text-primary); font-size: 28px; font-weight: 780; letter-spacing: -.045em; }
+.login-panel__theme-select { width: 122px; }
+.login-panel__alert { margin-bottom: 18px; }
+.login-form__submit { width: 100%; margin-top: 8px; }
+:global(html[data-theme="dark"]) .login-brand { background: radial-gradient(circle at 12% 8%, rgba(58,112,220,.22), transparent 34%), radial-gradient(circle at 92% 88%, rgba(119,88,207,.19), transparent 36%), linear-gradient(145deg, #111d30, #172235 58%, #1c223b); }
+@media (max-width: 900px) {
+  .login-screen { grid-template-columns: 1fr; min-height: 100dvh; }
+  .login-brand { min-height: 240px; padding: 26px 24px 30px; }
+  .login-brand__message { margin: 38px 0 0; }
+  .login-brand__message h1 { margin-top: 16px; font-size: 34px; }
+  .login-brand__message p { margin-top: 13px; font-size: 12px; line-height: 1.65; }
+  .login-brand__meta { display: none; }
+  .login-panel { min-height: 0; padding: 70px 18px 28px; }
+  .login-panel__toolbar { top: 18px; right: 18px; }
 }
-
-.login-panel__header {
-  display: flex;
-  align-items: flex-start;
-  justify-content: space-between;
-  gap: 16px;
-  margin-bottom: 18px;
-}
-
-.login-panel__eyebrow {
-  color: var(--accent);
-  font-size: 11px;
-  font-weight: 700;
-  letter-spacing: 0.12em;
-  text-transform: uppercase;
-}
-
-.login-panel__title {
-  margin: 6px 0 0;
-  color: var(--text-primary);
-  font-size: 28px;
-  font-weight: 750;
-  letter-spacing: -0.045em;
-}
-
-.login-panel__theme-select {
-  width: 122px;
-}
-
-.login-panel__alert {
-  margin-bottom: 18px;
-}
-
-.login-form__submit {
-  width: 100%;
-  margin-top: 8px;
-}
-
-@media (max-width: 767px) {
-  .login-screen {
-    padding: 18px 14px 24px;
-  }
-
-  .login-panel {
-    padding: 18px;
-  }
-
-  .login-panel__header {
-    flex-direction: column;
-  }
-
-  .login-panel__theme-select {
-    width: 100%;
-  }
+@media (max-width: 520px) {
+  .login-brand { min-height: 218px; padding: 21px 18px 26px; }
+  .login-brand__logo > span { width: 34px; height: 34px; }
+  .login-brand__message { margin-top: 30px; }
+  .login-brand__status { display: none; }
+  .login-brand__message h1 { margin-top: 0; font-size: 29px; }
+  .login-brand__message p { display: none; }
+  .login-panel { padding-inline: 14px; }
+  .login-card { padding: 22px 18px; }
 }
 </style>

frontend/src/views/RecordSessionDetailView.vue

@@ -4,7 +4,9 @@ import { useRouter } from "vue-router";
 import { ElMessage } from "element-plus";
 import apiClient, { getApiErrorMessage, buildApiUrl } from "@/api/client";
 import { useDanmakuPlayer } from "@/composables/useDanmakuPlayer";
+import { useViewport } from "@/composables/useViewport";
 import DanmakuPlayer from "@/components/player/DanmakuPlayer.vue";
+import PlatformMark from "@/components/ui/PlatformMark.vue";
 import type {
   RecordArtifactUploadBatchResult,
   RecordPreviewTicket,
@@ -28,6 +30,7 @@ const props = defineProps<{
 }>();
 
 const router = useRouter();
+const { isMobile } = useViewport();
 
 // Danmaku replay dialog
 const { danmakuEvents: replayDanmakuEvents, loading: danmakuLoading, error: danmakuError, loadTaskDanmaku, clear: clearDanmaku } = useDanmakuPlayer();
@@ -301,14 +304,20 @@ onMounted(loadDetail);
             <el-descriptions :column="1" border>
               <el-descriptions-item label="会话状态">
                 <el-tag :type="sessionStatusTagType(detail.session.status)">
-                  {{ sessionStatusLabelMap[detail.session.status] }}
+                  {{ detail.session.isRecovering ? "恢复中" : sessionStatusLabelMap[detail.session.status] }}
                 </el-tag>
               </el-descriptions-item>
+              <el-descriptions-item v-if="detail.session.isRecovering" label="恢复进度">
+                <span class="recovery-status-copy">{{ detail.session.recoveryReason || "正在等待下一次自动重试" }}</span>
+              </el-descriptions-item>
               <el-descriptions-item label="直播间">
                 {{ detail.session.liveRoomTitle }}
               </el-descriptions-item>
+              <el-descriptions-item label="主播">
+                {{ detail.session.anchorName || "未知主播" }}
+              </el-descriptions-item>
               <el-descriptions-item label="平台">
-                {{ platformLabelMap[detail.session.platform] }}
+                <PlatformMark :name="platformLabelMap[detail.session.platform]" />
               </el-descriptions-item>
               <el-descriptions-item label="Room ID">
                 <span class="monospace">{{ detail.session.roomId }}</span>
@@ -510,7 +519,40 @@ onMounted(loadDetail);
           </div>
         </div>
 
-        <div class="table-scroll-shell">
+        <div v-if="isMobile" class="segment-card-list">
+          <article v-for="row in detail.timeline.segments" :key="row.recordTaskId" class="segment-card">
+            <div class="segment-card__head">
+              <span>
+                <strong class="monospace">分片 #{{ row.segmentIndex }}</strong>
+                <small>{{ formatDuration(row.durationSeconds) }}</small>
+              </span>
+              <el-tag :type="sessionStatusTagType(row.status)">{{ taskStatusLabelMap[row.status] }}</el-tag>
+            </div>
+
+            <dl class="segment-card__facts">
+              <div class="segment-card__file">
+                <dt>文件</dt>
+                <dd class="monospace">{{ row.label || "-" }}</dd>
+              </div>
+              <div><dt>开始</dt><dd>{{ formatDate(row.startedAt) }}</dd></div>
+              <div><dt>结束</dt><dd>{{ formatDate(row.endedAt) }}</dd></div>
+            </dl>
+
+            <div class="segment-card__actions">
+              <el-button size="small" type="primary" @click="openTaskDetail(row.recordTaskId)">查看分片</el-button>
+              <el-button
+                size="small"
+                plain
+                :disabled="row.status !== 4 && row.status !== 6"
+                @click="openDanmakuReplay(row.recordTaskId, row.segmentIndex)"
+              >
+                弹幕回放
+              </el-button>
+            </div>
+          </article>
+        </div>
+
+        <div v-else class="table-scroll-shell">
           <el-table :data="detail.timeline.segments" class="premium-table" table-layout="auto">
             <el-table-column label="分片" width="90">
               <template #default="{ row }">
@@ -789,6 +831,91 @@ onMounted(loadDetail);
   color: var(--text-secondary);
 }
 
+.segment-card-list {
+  display: grid;
+  gap: 10px;
+}
+
+.segment-card {
+  display: grid;
+  gap: 13px;
+  min-width: 0;
+  padding: 14px;
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-sm);
+  background: var(--surface-muted);
+}
+
+.segment-card__head {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.segment-card__head > span {
+  display: grid;
+  min-width: 0;
+  gap: 4px;
+}
+
+.segment-card__head strong {
+  color: var(--text-primary);
+  font-size: 13px;
+}
+
+.segment-card__head small {
+  color: var(--text-muted);
+  font-size: 10px;
+}
+
+.segment-card__facts {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 10px 12px;
+  margin: 0;
+}
+
+.segment-card__facts > div {
+  display: grid;
+  min-width: 0;
+  gap: 4px;
+}
+
+.segment-card__facts dt {
+  color: var(--text-muted);
+  font-size: 10px;
+  font-weight: 700;
+}
+
+.segment-card__facts dd {
+  min-width: 0;
+  margin: 0;
+  overflow-wrap: anywhere;
+  color: var(--text-secondary);
+  font-size: 11px;
+  line-height: 1.55;
+}
+
+.segment-card__file {
+  grid-column: 1 / -1;
+}
+
+.segment-card__actions {
+  display: flex;
+  align-items: center;
+  justify-content: flex-start;
+  flex-wrap: wrap;
+  gap: 8px;
+  padding-top: 11px;
+  border-top: 1px solid var(--border-subtle);
+}
+
+.segment-card__actions :deep(.el-button) {
+  flex: 0 0 auto;
+  margin: 0;
+}
+
 .segment-label,
 .log-detail {
   white-space: pre-wrap;

frontend/src/views/RecordTasksView.vue

@@ -2,7 +2,7 @@
 import { computed, nextTick, onBeforeUnmount, onMounted, reactive, ref, watch } from "vue";
 import { useRouter } from "vue-router";
 import { ElMessage, ElNotification } from "element-plus";
-import { Bell, Connection, VideoCamera } from "@element-plus/icons-vue";
+import { ArrowLeft, ArrowRight, Bell, Connection, VideoCamera } from "@element-plus/icons-vue";
 import apiClient, {
   buildApiUrl,
   getApiErrorMessage,
@@ -1104,12 +1104,14 @@ onBeforeUnmount(() => {
           <div class="data-card__header">
             <div>
               <div class="data-card__title">{{ session.liveRoomTitle }}</div>
-              <div class="data-card__subtitle monospace">{{ session.roomId }}</div>
+              <div class="session-card__anchor">主播 · {{ session.anchorName || "未知主播" }}</div>
+              <div class="data-card__subtitle monospace">Room ID · {{ session.roomId }}</div>
             </div>
-            <StatusBadge :label="sessionStatusLabelMap[session.status]" :status="session.status" context="session" />
+            <StatusBadge :label="session.isRecovering ? '恢复中' : sessionStatusLabelMap[session.status]" :status="session.status" context="session" />
           </div>
 
           <div class="badge-row">
+            <span v-if="session.isRecovering" class="info-pill">自动重试中</span>
             <span class="info-pill">{{ saveModeLabelMap[session.saveMode] }}</span>
             <span class="info-pill">{{ outputFormatLabelMap[session.outputFormat] }}</span>
             <span class="info-pill">分片 {{ session.segmentCount }}</span>
@@ -1225,6 +1227,7 @@ onBeforeUnmount(() => {
               </div>
               <div class="session-title__main">
                 <div class="session-title__name">{{ session.liveRoomTitle }}</div>
+                <div class="session-title__anchor">主播 · {{ session.anchorName || "未知主播" }}</div>
                 <div class="session-title__meta">
                   <span class="monospace">{{ session.roomId }}</span>
                   <span>会话 {{ session.id.slice(0, 8) }}</span>
@@ -1232,7 +1235,7 @@ onBeforeUnmount(() => {
               </div>
 
               <div class="session-title__stats">
-                <StatusBadge :label="sessionStatusLabelMap[session.status]" :status="session.status" context="session" />
+                <StatusBadge :label="session.isRecovering ? '恢复中' : sessionStatusLabelMap[session.status]" :status="session.status" context="session" />
                 <span>{{ saveModeLabelMap[session.saveMode] }}</span>
                 <span>{{ outputFormatLabelMap[session.outputFormat] }}</span>
                 <span>分片 {{ session.segmentCount }}</span>
@@ -1245,6 +1248,15 @@ onBeforeUnmount(() => {
           </template>
 
           <div class="session-body">
+            <el-alert
+              v-if="session.isRecovering"
+              class="session-recovery-alert"
+              type="warning"
+              :closable="false"
+              show-icon
+              title="录制连接正在自动恢复"
+              :description="session.recoveryReason || '系统会在直播仍在线时持续重试，并保留当前会话。'"
+            />
             <div class="session-summary">
               <div class="session-summary__item">
                 <span class="session-summary__label">开始时间</span>
@@ -1370,7 +1382,24 @@ onBeforeUnmount(() => {
       </el-collapse>
 
       <div v-if="totalCount > pageSize" class="session-pagination">
+        <div v-if="isMobile" class="session-pagination__mobile" aria-label="会话分页">
+          <el-button
+            class="btn-prev"
+            :icon="ArrowLeft"
+            :disabled="currentPage <= 1"
+            @click="handlePageChange(currentPage - 1)"
+          >上一页</el-button>
+          <span class="session-pagination__position" aria-live="polite">
+            <strong>{{ currentPage }}</strong><span>/ {{ totalPages }}</span>
+          </span>
+          <el-button
+            class="btn-next"
+            :disabled="currentPage >= totalPages"
+            @click="handlePageChange(currentPage + 1)"
+          >下一页 <el-icon class="el-icon--right"><ArrowRight /></el-icon></el-button>
+        </div>
         <el-pagination
+          v-else
           background
           layout="prev, pager, next"
           :current-page="currentPage"
@@ -1612,9 +1641,43 @@ onBeforeUnmount(() => {
 .session-pagination {
   display: flex;
   justify-content: center;
+  width: 100%;
+  min-width: 0;
   margin-top: 20px;
 }
 
+.session-pagination__mobile {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
+  align-items: center;
+  gap: 8px;
+  width: 100%;
+  min-width: 0;
+}
+
+.session-pagination__mobile :deep(.el-button) {
+  width: 100%;
+  min-width: 0;
+  margin: 0;
+}
+
+.session-pagination__position {
+  display: inline-flex;
+  align-items: baseline;
+  justify-content: center;
+  gap: 4px;
+  min-width: 54px;
+  color: var(--text-muted);
+  font-size: 11px;
+  font-variant-numeric: tabular-nums;
+  white-space: nowrap;
+}
+
+.session-pagination__position strong {
+  color: var(--text-primary);
+  font-size: 14px;
+}
+
 .toolbar-row {
   display: flex;
   align-items: flex-start;
@@ -1742,6 +1805,14 @@ onBeforeUnmount(() => {
   gap: 16px;
 }
 
+.session-card__anchor,
+.session-title__anchor {
+  margin-top: 4px;
+  color: var(--text-secondary);
+  font-size: 12px;
+  line-height: 1.45;
+}
+
 .session-card__tasks {
   display: grid;
   gap: 10px;

frontend/src/views/RecoveryView.vue

@@ -1,16 +1,19 @@
 <script setup lang="ts">
 import { computed, onMounted, ref } from "vue";
-import { ElMessage } from "element-plus";
+import { ElMessage, ElMessageBox } from "element-plus";
 import axios from "axios";
 import apiClient, { getApiErrorMessage } from "@/api/client";
 import EmptyState from "@/components/ui/EmptyState.vue";
 import MetricCard from "@/components/ui/MetricCard.vue";
+import PlatformMark from "@/components/ui/PlatformMark.vue";
 import StatusBadge from "@/components/ui/StatusBadge.vue";
 import StorageCapacity from "@/components/ui/StorageCapacity.vue";
 import { useViewport } from "@/composables/useViewport";
 import type {
   RecoverableFinalization,
   RecoverableLiveRoom,
+  RecordingFailureItem,
+  RecordingFailureListResponse,
   RecoveryActionResult,
   RecoveryOverview
 } from "@/types";
@@ -23,11 +26,29 @@ const resumeAllLoading = ref(false);
 const runningKey = ref("");
 const loadError = ref("");
 const overview = ref<RecoveryOverview | null>(null);
+const recordingFailures = ref<RecordingFailureItem[]>([]);
+const recordingFailureTotal = ref(0);
+const recordingFailurePage = ref(1);
+const recordingFailureKind = ref("");
+const recordingFailureLoading = ref(false);
 const { isMobile } = useViewport();
 
 const storage = computed(() => overview.value?.storage ?? null);
 const liveRooms = computed(() => overview.value?.liveRooms ?? []);
 const finalizations = computed(() => overview.value?.finalizations ?? []);
+const mergedArtifacts = computed(() => overview.value?.mergedArtifacts ?? []);
+const recordingFailurePageSize = computed(() => isMobile.value ? 8 : 20);
+const recordingFailureKinds = [
+  { label: "全部原因", value: "" },
+  { label: "异常退出分片", value: "ReadableFragment" },
+  { label: "短分片", value: "TooShort" },
+  { label: "媒体不可读", value: "UnreadableMedia" },
+  { label: "封装或收尾失败", value: "FinalizationFailed" },
+  { label: "文件缺失", value: "MissingMedia" },
+  { label: "直播离线", value: "SourceOffline" },
+  { label: "未取得播放地址", value: "StreamUrlUnavailable" },
+  { label: "待检测", value: "Unknown" }
+];
 
 async function loadOverview() {
   loading.value = true;
@@ -46,6 +67,80 @@ async function loadOverview() {
   }
 }
 
+async function loadRecordingFailures() {
+  recordingFailureLoading.value = true;
+  try {
+    const { data } = await apiClient.get<RecordingFailureListResponse>("/recovery/recording-failures", {
+      params: {
+        failureKind: recordingFailureKind.value || undefined,
+        skip: (recordingFailurePage.value - 1) * recordingFailurePageSize.value,
+        take: recordingFailurePageSize.value
+      }
+    });
+    recordingFailures.value = data.items;
+    recordingFailureTotal.value = data.totalCount;
+  } catch (error) {
+    ElMessage.error(getApiErrorMessage(error, "录制失败产物加载失败。"));
+  } finally {
+    recordingFailureLoading.value = false;
+  }
+}
+
+function handleRecordingFailureFilter() {
+  recordingFailurePage.value = 1;
+  void loadRecordingFailures();
+}
+
+function handleRecordingFailurePage(page: number) {
+  recordingFailurePage.value = page;
+  void loadRecordingFailures();
+}
+
+async function acceptRecordingArtifact(item: RecordingFailureItem) {
+  let confirmShortArtifact = false;
+  if ((item.durationSeconds ?? 0) < 5) {
+    try {
+      await ElMessageBox.confirm(
+        `该分片只有 ${formatDuration(item.durationSeconds)}。确认后它会转为待上传，但不会自动上传。`,
+        "确认认领短分片",
+        { confirmButtonText: "确认认领", cancelButtonText: "取消", type: "warning" }
+      );
+      confirmShortArtifact = true;
+    } catch {
+      return;
+    }
+  }
+
+  runningKey.value = `accept:${item.recordTaskId}`;
+  try {
+    const { data } = await apiClient.post<RecoveryActionResult>(
+      `/recovery/recording-failures/${item.recordTaskId}/accept`,
+      { confirmShortArtifact }
+    );
+    showActionResult(data);
+    await Promise.all([loadOverview(), loadRecordingFailures()]);
+  } catch (error) {
+    ElMessage.error(getApiErrorMessage(error, "分片校验未通过。"));
+  } finally {
+    runningKey.value = "";
+  }
+}
+
+async function repairRecordingArtifact(item: RecordingFailureItem) {
+  runningKey.value = `repair:${item.recordTaskId}`;
+  try {
+    const { data } = await apiClient.post<RecoveryActionResult>(
+      `/recovery/recording-failures/${item.recordTaskId}/repair`
+    );
+    showActionResult(data);
+    await loadRecordingFailures();
+  } catch (error) {
+    ElMessage.error(getApiErrorMessage(error, "无法启动非破坏修复。"));
+  } finally {
+    runningKey.value = "";
+  }
+}
+
 async function retryLiveRoom(liveRoomId: string) {
   runningKey.value = `retry:${liveRoomId}`;
 
@@ -114,8 +209,8 @@ function formatDate(value?: string) {
   return value ? new Date(value).toLocaleString() : "-";
 }
 
-function formatBytes(bytes: number) {
-  if (!Number.isFinite(bytes) || bytes < 0) {
+function formatBytes(bytes?: number) {
+  if (typeof bytes !== "number" || !Number.isFinite(bytes) || bytes < 0) {
     return "-";
   }
 
@@ -130,6 +225,13 @@ function formatBytes(bytes: number) {
   return `${value.toFixed(value >= 100 || index === 0 ? 0 : value >= 10 ? 1 : 2)} ${units[index]}`;
 }
 
+function formatDuration(seconds?: number) {
+  if (typeof seconds !== "number" || !Number.isFinite(seconds)) {
+    return "未知时长";
+  }
+  return seconds < 60 ? `${seconds.toFixed(seconds < 10 ? 1 : 0)} 秒` : `${(seconds / 60).toFixed(1)} 分钟`;
+}
+
 function autoStartDecisionLabel(code?: string) {
   if (!code) {
     return "未记录";
@@ -171,7 +273,9 @@ function finalizationTitle(item: RecoverableFinalization) {
   return item.liveRoomTitle || item.roomId;
 }
 
-onMounted(loadOverview);
+onMounted(async () => {
+  await Promise.all([loadOverview(), loadRecordingFailures()]);
+});
 </script>
 
 <template>
@@ -195,12 +299,200 @@ onMounted(loadOverview);
     <div class="stats-grid recovery-metrics" v-loading="loading">
       <MetricCard label="可重试开录" :value="liveRooms.length" description="在线、启用中且没有活动会话的直播间" :icon="RefreshRight" />
       <MetricCard label="可恢复转码" :value="finalizations.length" description="等待继续或可手动补转码的 MP4 任务" :icon="VideoCamera" />
+      <MetricCard label="已收纳短片" :value="mergedArtifacts.length" description="已合并或转存到恢复目录的源分片" :icon="VideoCamera" />
     </div>
 
     <el-card v-if="storage" class="surface-card" shadow="never">
       <StorageCapacity :status="storage" />
     </el-card>
 
+    <el-card v-if="mergedArtifacts.length > 0" class="surface-card table-card" shadow="never">
+      <div class="toolbar-row">
+        <div>
+          <h3 class="section-title">短分片合并记录</h3>
+          <p class="section-subtitle">源文件不会被覆盖；恢复目录和清单可用于审计或人工还原。</p>
+        </div>
+      </div>
+
+      <div v-if="isMobile" class="data-card-list">
+        <article v-for="row in mergedArtifacts" :key="row.sourceRecordTaskId" class="data-card">
+          <div class="data-card__header">
+            <div>
+              <div class="data-card__title">源分片 {{ row.sourceRecordTaskId.slice(0, 8) }}</div>
+              <div class="data-card__subtitle">{{ formatDuration(row.sourceDurationSeconds) }}</div>
+            </div>
+            <StatusBadge :label="row.mergedIntoRecordTaskId ? '已合并' : '仅恢复保留'" status="completed" />
+          </div>
+          <div class="data-card__grid">
+            <div style="grid-column: 1 / -1;"><dt>合并结果</dt><dd class="monospace failure-path">{{ row.mergedVideoPath || "未生成独立结果" }}</dd></div>
+            <div style="grid-column: 1 / -1;"><dt>恢复目录</dt><dd class="monospace failure-path">{{ row.recoveryDirectory || "-" }}</dd></div>
+            <div style="grid-column: 1 / -1;"><dt>恢复清单</dt><dd class="monospace failure-path">{{ row.manifestPath || "-" }}</dd></div>
+          </div>
+        </article>
+      </div>
+
+      <el-table v-else :data="mergedArtifacts" class="premium-table" table-layout="fixed" row-key="sourceRecordTaskId">
+        <el-table-column label="源分片" min-width="170">
+          <template #default="{ row }">
+            <div class="cell-title monospace">{{ row.sourceRecordTaskId.slice(0, 8) }}</div>
+            <div class="cell-subtitle">{{ formatDuration(row.sourceDurationSeconds) }} · {{ formatDate(row.createdAt) }}</div>
+          </template>
+        </el-table-column>
+        <el-table-column label="合并结果" min-width="280">
+          <template #default="{ row }"><div class="monospace failure-path">{{ row.mergedVideoPath || "仅恢复保留" }}</div></template>
+        </el-table-column>
+        <el-table-column label="恢复目录 / 清单" min-width="320">
+          <template #default="{ row }">
+            <div class="monospace failure-path">{{ row.recoveryDirectory || "-" }}</div>
+            <div class="cell-subtitle monospace failure-path">{{ row.manifestPath || "未找到清单" }}</div>
+          </template>
+        </el-table-column>
+      </el-table>
+    </el-card>
+
+    <el-card class="surface-card table-card" shadow="never">
+      <div class="toolbar-row">
+        <div>
+          <h3 class="section-title">录制失败产物</h3>
+          <p class="section-subtitle">先区分可用分片、可修复媒体和不可恢复记录；所有修复都会保留原文件。</p>
+        </div>
+        <div class="recovery-filter-actions">
+          <el-select
+            v-model="recordingFailureKind"
+            aria-label="录制失败原因筛选"
+            @change="handleRecordingFailureFilter"
+          >
+            <el-option
+              v-for="option in recordingFailureKinds"
+              :key="option.value || 'all'"
+              :label="option.label"
+              :value="option.value"
+            />
+          </el-select>
+          <el-button :loading="recordingFailureLoading" @click="loadRecordingFailures">刷新</el-button>
+        </div>
+      </div>
+
+      <EmptyState
+        v-if="!recordingFailureLoading && recordingFailures.length === 0"
+        title="没有匹配的录制失败产物"
+        description="当前分类下没有需要人工处理的文件。"
+        action-text="刷新列表"
+        @action="loadRecordingFailures"
+      />
+
+      <div v-else-if="isMobile" class="data-card-list" v-loading="recordingFailureLoading">
+        <article v-for="row in recordingFailures" :key="row.recordTaskId" class="data-card failure-card">
+          <div class="data-card__header">
+            <div class="failure-card__identity">
+              <div class="data-card__title">{{ row.liveRoomTitle }}</div>
+              <div class="data-card__subtitle platform-line">
+                <PlatformMark :name="row.platformName" /> · 分片 #{{ row.segmentIndex }}
+              </div>
+            </div>
+            <StatusBadge :label="row.failureLabel" :status="row.isRepairing ? 'processing' : 'warning'" />
+          </div>
+
+          <p class="failure-card__action">{{ row.recommendedAction }}</p>
+          <div class="data-card__grid">
+            <div><dt>媒体状态</dt><dd>{{ row.fileExists ? "本地文件存在" : "本地文件缺失" }}</dd></div>
+            <div><dt>时长 / 大小</dt><dd>{{ formatDuration(row.durationSeconds) }} · {{ formatBytes(row.fileSizeBytes) }}</dd></div>
+            <div v-if="row.filePath" style="grid-column: 1 / -1;"><dt>文件</dt><dd class="monospace failure-path">{{ row.filePath }}</dd></div>
+            <div v-if="row.errorMessage" style="grid-column: 1 / -1;"><dt>原始错误</dt><dd class="failure-error">{{ row.errorMessage }}</dd></div>
+          </div>
+
+          <div class="data-card__actions failure-actions">
+            <el-button
+              v-if="row.canAccept"
+              type="primary"
+              size="small"
+              :loading="runningKey === `accept:${row.recordTaskId}`"
+              @click="acceptRecordingArtifact(row)"
+            >确认有效</el-button>
+            <el-button
+              v-if="row.canRepair"
+              size="small"
+              :loading="runningKey === `repair:${row.recordTaskId}`"
+              @click="repairRecordingArtifact(row)"
+            >非破坏修复</el-button>
+            <el-button
+              v-if="row.canRetryRoom"
+              size="small"
+              :loading="runningKey === `retry:${row.liveRoomId}`"
+              @click="retryLiveRoom(row.liveRoomId)"
+            >重新开录</el-button>
+          </div>
+        </article>
+      </div>
+
+      <el-table
+        v-else
+        :data="recordingFailures"
+        v-loading="recordingFailureLoading"
+        class="premium-table"
+        table-layout="fixed"
+        row-key="recordTaskId"
+      >
+        <el-table-column label="直播间 / 分片" min-width="210">
+          <template #default="{ row }">
+            <div class="cell-title">{{ row.liveRoomTitle }}</div>
+            <div class="cell-subtitle platform-line"><PlatformMark :name="row.platformName" /> · #{{ row.segmentIndex }}</div>
+            <div class="cell-mono monospace">{{ row.roomId }}</div>
+          </template>
+        </el-table-column>
+        <el-table-column label="原因与建议" min-width="260">
+          <template #default="{ row }">
+            <StatusBadge :label="row.failureLabel" :status="row.isRepairing ? 'processing' : 'warning'" />
+            <div class="cell-subtitle failure-recommendation">{{ row.recommendedAction }}</div>
+            <div v-if="row.errorMessage" class="failure-error line-clamp-2">{{ row.errorMessage }}</div>
+          </template>
+        </el-table-column>
+        <el-table-column label="本地产物" min-width="240">
+          <template #default="{ row }">
+            <div class="monospace failure-path">{{ row.filePath || "-" }}</div>
+            <div class="cell-subtitle">{{ formatDuration(row.durationSeconds) }} · {{ formatBytes(row.fileSizeBytes) }}</div>
+          </template>
+        </el-table-column>
+        <el-table-column label="操作" width="250" align="right">
+          <template #default="{ row }">
+            <div class="failure-actions failure-actions--desktop">
+              <el-button
+                v-if="row.canAccept"
+                type="primary"
+                size="small"
+                :loading="runningKey === `accept:${row.recordTaskId}`"
+                @click="acceptRecordingArtifact(row)"
+              >确认有效</el-button>
+              <el-button
+                v-if="row.canRepair"
+                size="small"
+                :loading="runningKey === `repair:${row.recordTaskId}`"
+                @click="repairRecordingArtifact(row)"
+              >修复</el-button>
+              <el-button
+                v-if="row.canRetryRoom"
+                size="small"
+                :loading="runningKey === `retry:${row.liveRoomId}`"
+                @click="retryLiveRoom(row.liveRoomId)"
+              >开录</el-button>
+            </div>
+          </template>
+        </el-table-column>
+      </el-table>
+
+      <div v-if="recordingFailureTotal > recordingFailurePageSize" class="pagination-row">
+        <el-pagination
+          background
+          layout="prev, pager, next"
+          :pager-count="isMobile ? 3 : 7"
+          :page-size="recordingFailurePageSize"
+          :total="recordingFailureTotal"
+          :current-page="recordingFailurePage"
+          @current-change="handleRecordingFailurePage"
+        />
+      </div>
+    </el-card>
+
     <el-card class="surface-card table-card" shadow="never">
       <div class="toolbar-row">
         <div>
@@ -233,7 +525,7 @@ onMounted(loadOverview);
               <div class="data-card__title">{{ liveRoomTitle(row) }}</div>
               <div class="data-card__subtitle">{{ row.anchorName || "未知主播" }}</div>
             </div>
-            <StatusBadge :label="row.platformName || '--'" :status="row.platformName || 'unknown'" />
+            <PlatformMark :name="row.platformName" />
           </div>
 
           <div class="badge-row">
@@ -291,7 +583,7 @@ onMounted(loadOverview);
 
         <el-table-column label="平台" width="120">
           <template #default="{ row }">
-            <StatusBadge :label="row.platformName || '--'" :status="row.platformName || 'unknown'" />
+            <PlatformMark :name="row.platformName" />
           </template>
         </el-table-column>
 
@@ -364,7 +656,7 @@ onMounted(loadOverview);
           <div class="data-card__header">
             <div>
               <div class="data-card__title">{{ finalizationTitle(row) }}</div>
-              <div class="data-card__subtitle">{{ row.platformName }} · Segment #{{ row.segmentIndex }}</div>
+              <div class="data-card__subtitle platform-line"><PlatformMark :name="row.platformName" /> · Segment #{{ row.segmentIndex }}</div>
             </div>
             <StatusBadge :label="taskStatusLabelMap[row.status]" :status="row.status" context="task" />
           </div>
@@ -412,7 +704,7 @@ onMounted(loadOverview);
         <el-table-column label="任务" min-width="280">
           <template #default="{ row }">
             <div class="cell-title">{{ finalizationTitle(row) }}</div>
-            <div class="cell-subtitle">{{ row.platformName }} · Segment #{{ row.segmentIndex }}</div>
+            <div class="cell-subtitle platform-line"><PlatformMark :name="row.platformName" /> · Segment #{{ row.segmentIndex }}</div>
             <div class="cell-mono monospace">{{ row.roomId }}</div>
           </template>
         </el-table-column>
@@ -477,4 +769,65 @@ onMounted(loadOverview);
   white-space: pre-wrap;
   overflow-wrap: anywhere;
 }
+
+.recovery-filter-actions,
+.failure-actions {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  flex-wrap: wrap;
+}
+
+.recovery-filter-actions :deep(.el-select) {
+  width: 190px;
+}
+
+.failure-card__identity {
+  min-width: 0;
+}
+
+.failure-card__action,
+.failure-recommendation {
+  color: var(--text-secondary);
+  line-height: 1.6;
+}
+
+.failure-card__action {
+  margin: 0;
+}
+
+.failure-path,
+.failure-error {
+  overflow-wrap: anywhere;
+  word-break: break-word;
+}
+
+.failure-error {
+  margin-top: 6px;
+  color: var(--el-color-danger);
+  font-size: 12px;
+  line-height: 1.55;
+}
+
+.failure-actions--desktop {
+  justify-content: flex-end;
+}
+
+.line-clamp-2 {
+  display: -webkit-box;
+  overflow: hidden;
+  -webkit-box-orient: vertical;
+  -webkit-line-clamp: 2;
+}
+
+@media (max-width: 767px) {
+  .recovery-filter-actions {
+    width: 100%;
+  }
+
+  .recovery-filter-actions :deep(.el-select) {
+    flex: 1 1 180px;
+    width: auto;
+  }
+}
 </style>

frontend/src/views/UploadTasksView.vue

@@ -1,14 +1,21 @@
 <script setup lang="ts">
 import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from "vue";
 import { useRouter } from "vue-router";
-import { ElMessage } from "element-plus";
+import { ElMessage, ElMessageBox } from "element-plus";
 import { Bell, CircleCheck, CircleClose, UploadFilled } from "@element-plus/icons-vue";
 import apiClient, { getApiErrorMessage } from "@/api/client";
 import EmptyState from "@/components/ui/EmptyState.vue";
 import MetricCard from "@/components/ui/MetricCard.vue";
+import PlatformMark from "@/components/ui/PlatformMark.vue";
 import StatusBadge from "@/components/ui/StatusBadge.vue";
 import { useViewport } from "@/composables/useViewport";
-import type { RecordArtifactUploadItemResult, UploadTaskItem, UploadTaskListResponse } from "@/types";
+import type {
+  RecordArtifactUploadBatchResult,
+  RecordArtifactUploadItemResult,
+  UploadQueueHealth,
+  UploadTaskItem,
+  UploadTaskListResponse
+} from "@/types";
 import {
   platformLabelMap,
   uploadStatusLabelMap
@@ -28,6 +35,8 @@ const failedCount = ref(0);
 const queuedCount = ref(0);
 const uploadingCount = ref(0);
 const waitingRetryCount = ref(0);
+const matchingRetryableCount = ref(0);
+const queueHealth = ref<UploadQueueHealth>({ state: "Healthy", isPaused: false });
 const uploadStatusFilter = ref<number | null>(null);
 const taskSearch = ref("");
 const currentPage = ref(1);
@@ -39,6 +48,7 @@ let refreshTimer: number | null = null;
 let activeRequest: AbortController | null = null;
 let requestSerial = 0;
 let appMain: HTMLElement | null = null;
+let searchTimer: number | null = null;
 
 const filterOptions = [
   { label: "全部", value: null as number | null },
@@ -51,21 +61,7 @@ const filterOptions = [
 ];
 
 const totalPages = computed(() => Math.max(1, Math.ceil(totalCount.value / pageSize.value)));
-const filteredItems = computed(() => {
-  const keyword = taskSearch.value.trim().toLowerCase();
-  if (!keyword) {
-    return items.value;
-  }
-
-  return items.value.filter((item) => [
-    item.liveRoomTitle,
-    item.roomId,
-    item.filePath,
-    item.remoteVideoPath,
-    item.uploadErrorMessage,
-    item.recordTaskId
-  ].some((value) => String(value || "").toLowerCase().includes(keyword)));
-});
+const filteredItems = computed(() => items.value);
 
 function mergeItems(nextItems: UploadTaskItem[]) {
   const previousById = new Map(items.value.map((item) => [item.recordTaskId, item]));
@@ -120,6 +116,9 @@ async function loadUploadStatus(options: { background?: boolean; cancelPrevious?
     if (uploadStatusFilter.value !== null) {
       params.uploadStatus = uploadStatusFilter.value;
     }
+    if (taskSearch.value.trim()) {
+      params.query = taskSearch.value.trim();
+    }
 
     const { data } = await apiClient.get<UploadTaskListResponse>("/record-tasks/upload-status", {
       params,
@@ -145,6 +144,8 @@ async function loadUploadStatus(options: { background?: boolean; cancelPrevious?
     queuedCount.value = data.queuedCount;
     uploadingCount.value = data.uploadingCount;
     waitingRetryCount.value = data.waitingRetryCount;
+    matchingRetryableCount.value = data.matchingRetryableCount ?? 0;
+    queueHealth.value = data.queueHealth ?? { state: "Healthy", isPaused: false };
     await nextTick();
     if (options.preserveScroll !== false && appMain) {
       appMain.scrollTop = scrollTop;
@@ -179,7 +180,11 @@ async function uploadTask(task: UploadTaskItem) {
   uploadingTaskId.value = task.recordTaskId;
 
   try {
-    const { data } = await apiClient.post<RecordArtifactUploadItemResult>(`/record-tasks/${task.recordTaskId}/upload`);
+    const retrying = [2, 5].includes(task.uploadStatus);
+    const endpoint = retrying
+      ? `/record-tasks/${task.recordTaskId}/upload/retry`
+      : `/record-tasks/${task.recordTaskId}/upload`;
+    const { data } = await apiClient.post<RecordArtifactUploadItemResult>(endpoint);
     ElMessage[data.success ? "success" : "warning"](data.message);
     await loadUploadStatus({ cancelPrevious: true, preserveScroll: true });
   } catch (error) {
@@ -190,32 +195,31 @@ async function uploadTask(task: UploadTaskItem) {
 }
 
 async function retryAllFailed() {
-  const failedItems = items.value.filter(item => item.uploadStatus === 2);
-  if (failedItems.length === 0) {
-    ElMessage.info("当前没有上传失败的任务。");
+  const retryableCount = matchingRetryableCount.value;
+  if (retryableCount === 0) {
+    ElMessage.info("当前筛选条件下没有可重试任务。");
     return;
   }
 
+  try {
+    await ElMessageBox.confirm(
+      `将立即重试全部 ${retryableCount} 个匹配任务，不受当前分页限制。`,
+      "重试全部匹配任务",
+      { confirmButtonText: "确认重试", cancelButtonText: "取消", type: "warning" }
+    );
+  } catch {
+    return;
+  }
   retryingFailed.value = true;
-  let successCount = 0;
-  let failCount = 0;
 
   try {
-    for (const item of failedItems) {
-      try {
-        const { data } = await apiClient.post<RecordArtifactUploadItemResult>(`/record-tasks/${item.recordTaskId}/upload`);
-        if (data.success) {
-          successCount++;
-        } else {
-          failCount++;
-        }
-      } catch {
-        failCount++;
-      }
-    }
-
-    ElMessage[successCount > 0 ? "success" : "warning"](
-      `重试请求已处理：已受理 ${successCount}，失败 ${failCount}。`
+    const status = [2, 5].includes(uploadStatusFilter.value ?? -1) ? uploadStatusFilter.value : null;
+    const { data } = await apiClient.post<RecordArtifactUploadBatchResult>("/record-tasks/upload/retry", {
+      uploadStatus: status,
+      query: taskSearch.value.trim() || null
+    });
+    ElMessage[data.successCount > 0 ? "success" : "warning"](
+      `重试请求已处理：已受理 ${data.successCount}，失败 ${data.failedCount}。`
     );
     await loadUploadStatus({ cancelPrevious: true, preserveScroll: true });
   } finally {
@@ -262,7 +266,7 @@ function openDetail(task: UploadTaskItem) {
 }
 
 function canUpload(task: UploadTaskItem) {
-  return ![1, 3, 4, 5].includes(task.uploadStatus);
+  return ![1, 3, 4].includes(task.uploadStatus);
 }
 
 function isUploadInProgress(task: UploadTaskItem) {
@@ -307,11 +311,32 @@ function handleVisibilityChange() {
   }
 }
 
+async function resumeQueue() {
+  try {
+    const { data } = await apiClient.post<UploadQueueHealth>("/upload-queue/openlist/resume");
+    queueHealth.value = data;
+    ElMessage.success("OpenList 认证成功，上传队列已恢复。");
+    await loadUploadStatus({ cancelPrevious: true, preserveScroll: true });
+  } catch (error) {
+    ElMessage.error(getApiErrorMessage(error, "OpenList 仍不可用，请检查账号、密码和限流状态。"));
+  }
+}
+
 watch(isWideDesktop, () => {
   currentPage.value = 1;
   void loadUploadStatus({ cancelPrevious: true, preserveScroll: true }).finally(scheduleRefresh);
 });
 
+watch(taskSearch, () => {
+  if (searchTimer !== null) {
+    window.clearTimeout(searchTimer);
+  }
+  searchTimer = window.setTimeout(() => {
+    currentPage.value = 1;
+    void loadUploadStatus({ cancelPrevious: true, preserveScroll: true }).finally(scheduleRefresh);
+  }, 350);
+});
+
 onMounted(async () => {
   appMain = document.querySelector<HTMLElement>(".app-main");
   document.addEventListener("visibilitychange", handleVisibilityChange);
@@ -321,6 +346,9 @@ onMounted(async () => {
 
 onBeforeUnmount(() => {
   stopRefreshTimer();
+  if (searchTimer !== null) {
+    window.clearTimeout(searchTimer);
+  }
   activeRequest?.abort();
   document.removeEventListener("visibilitychange", handleVisibilityChange);
 });
@@ -345,6 +373,15 @@ onBeforeUnmount(() => {
 
     <el-alert v-if="loadError" class="page-error-alert" type="error" :closable="false" show-icon :title="loadError" />
 
+    <div v-if="queueHealth.isPaused" class="queue-health-banner" role="status">
+      <div>
+        <strong>{{ queueHealth.state === "RateLimited" ? "OpenList 正在限流" : queueHealth.state === "Disabled" ? "上传队列已暂停" : "OpenList 认证需要处理" }}</strong>
+        <p>{{ queueHealth.reason || "队列已停止发起新请求，任务重试次数不会继续消耗。" }}</p>
+        <span v-if="queueHealth.retryAt">预计可重试：{{ formatDate(queueHealth.retryAt) }}</span>
+      </div>
+      <el-button v-if="queueHealth.state !== 'Disabled'" type="primary" @click="resumeQueue">验证并恢复队列</el-button>
+    </div>
+
     <div class="stats-grid">
       <MetricCard label="全部任务" :value="totalCount" :description="`已完成 ${succeededCount} 个`" :icon="Bell" />
       <MetricCard label="待上传" :value="notUploadedCount" description="尚未进入上传队列" :icon="UploadFilled" />
@@ -361,7 +398,7 @@ onBeforeUnmount(() => {
       <div class="toolbar-row">
         <div>
           <h3 class="section-title">上传队列</h3>
-          <p class="section-subtitle">按状态和文件信息定位任务，批量操作仅作用于当前页。</p>
+          <p class="section-subtitle">按状态和文件信息定位任务，批量重试会处理全部匹配结果。</p>
         </div>
         <div class="toolbar-row__actions">
           <el-button
@@ -378,7 +415,7 @@ onBeforeUnmount(() => {
             :loading="retryingFailed"
             @click="retryAllFailed"
           >
-            重试本页失败
+            重试全部匹配
           </el-button>
         </div>
       </div>
@@ -388,7 +425,7 @@ onBeforeUnmount(() => {
         <el-select v-model="uploadStatusFilter" placeholder="全部状态" aria-label="上传状态筛选" @change="handleFilterChange">
           <el-option v-for="opt in filterOptions" :key="String(opt.value)" :label="opt.label" :value="opt.value" />
         </el-select>
-        <span class="list-filterbar__count">本页 {{ filteredItems.length }} / {{ items.length }}</span>
+        <span class="list-filterbar__count">本页 {{ filteredItems.length }} / 共 {{ totalCount }}</span>
       </div>
 
       <el-skeleton v-if="initialLoading && items.length === 0" :rows="6" animated />
@@ -407,7 +444,7 @@ onBeforeUnmount(() => {
             <div class="upload-item-card__header">
               <div class="upload-item-card__identity">
                 <strong>{{ row.liveRoomTitle }}</strong>
-                <span>{{ platformLabelMap[row.platform] ?? "-" }} · {{ row.roomId }} · 分片 #{{ row.segmentIndex }}</span>
+                <span class="platform-line"><PlatformMark :name="platformLabelMap[row.platform] ?? '-'" /> · {{ row.roomId }} · 分片 #{{ row.segmentIndex }}</span>
               </div>
               <StatusBadge
                 :label="uploadStatusLabelMap[row.uploadStatus]"
@@ -445,7 +482,7 @@ onBeforeUnmount(() => {
                 type="primary"
                 :loading="uploadingTaskId === row.recordTaskId"
                 @click="uploadTask(row)"
-              >{{ row.uploadStatus === 2 ? "重试上传" : "立即上传" }}</el-button>
+              >{{ [2, 5].includes(row.uploadStatus) ? "立即重试" : "立即上传" }}</el-button>
             </div>
           </article>
         </div>
@@ -461,7 +498,7 @@ onBeforeUnmount(() => {
               <template #default="{ row }">
                 <div>
                   <div class="cell-primary">{{ row.liveRoomTitle }}</div>
-                  <div class="cell-subtitle">{{ platformLabelMap[row.platform] ?? "-" }} · <span class="monospace">{{ row.roomId }}</span> · #{{ row.segmentIndex }}</div>
+                  <div class="cell-subtitle platform-line"><PlatformMark :name="platformLabelMap[row.platform] ?? '-'" /> · <span class="monospace">{{ row.roomId }}</span> · #{{ row.segmentIndex }}</div>
                 </div>
               </template>
             </el-table-column>
@@ -513,7 +550,7 @@ onBeforeUnmount(() => {
                     size="small"
                     :loading="uploadingTaskId === row.recordTaskId"
                     @click="uploadTask(row)"
-                  >{{ row.uploadStatus === 2 ? "重试" : "上传" }}</el-button>
+                  >{{ [2, 5].includes(row.uploadStatus) ? "重试" : "上传" }}</el-button>
                 </div>
               </template>
             </el-table-column>
@@ -545,6 +582,47 @@ onBeforeUnmount(() => {
   border-radius: 14px;
 }
 
+.queue-health-banner {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 18px;
+  padding: 16px 18px;
+  border: 1px solid color-mix(in srgb, var(--el-color-warning) 34%, var(--border-subtle));
+  border-radius: 14px;
+  background: color-mix(in srgb, var(--el-color-warning) 9%, var(--surface-card));
+}
+
+.queue-health-banner > div {
+  min-width: 0;
+}
+
+.queue-health-banner strong {
+  display: block;
+  color: var(--text-primary);
+}
+
+.queue-health-banner p {
+  margin: 4px 0 0;
+  color: var(--text-secondary);
+  line-height: 1.55;
+  overflow-wrap: anywhere;
+}
+
+.queue-health-banner span {
+  display: block;
+  margin-top: 4px;
+  color: var(--text-tertiary);
+  font-size: 12px;
+}
+
+@media (max-width: 767px) {
+  .queue-health-banner {
+    align-items: stretch;
+    flex-direction: column;
+  }
+}
+
 .stats-grid {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));

frontend/tests/e2e/ui-regression.spec.ts

@@ -63,6 +63,7 @@ const session = {
   id: "session-12345678",
   liveRoomId: room.id,
   liveRoomTitle: room.title,
+  anchorName: room.anchorName,
   platform: 0,
   roomId: room.roomId,
   status: 4,
@@ -82,6 +83,28 @@ const session = {
   tasks: [task]
 };
 
+const sessionDetail = {
+  session,
+  timeline: {
+    anchorAt: now,
+    totalDurationSeconds: 5400,
+    segments: Array.from({ length: 3 }, (_, index) => ({
+      recordTaskId: `task-${index + 1}`,
+      segmentIndex: index + 1,
+      status: 4,
+      startedAt: new Date(Date.parse(now) + index * 1_800_000).toISOString(),
+      endedAt: new Date(Date.parse(now) + (index + 1) * 1_800_000).toISOString(),
+      offsetSeconds: index * 1800,
+      durationSeconds: 1800,
+      label: `/volume1/录制/示例主播/2026-08-02/分片-${String(index + 1).padStart(3, "0")}.mp4`,
+      detail: "录制完成"
+    })),
+    events: [],
+    heatBuckets: []
+  },
+  logs: []
+};
+
 const uploadTask = {
   recordTaskId: task.id,
   recordSessionId: session.id,
@@ -99,6 +122,29 @@ const uploadTask = {
   createdAt: now
 };
 
+const recordingFailure = {
+  recordTaskId: "failed-task-1",
+  recordSessionId: "failed-session-1",
+  liveRoomId: room.id,
+  liveRoomTitle: room.title,
+  roomId: room.roomId,
+  platformName: room.platformName,
+  segmentIndex: 7,
+  failureKind: "ReadableFragment",
+  failureLabel: "异常退出分片",
+  recommendedAction: "文件可以读取。确认内容有效后，将它转为待上传任务。",
+  errorMessage: "FFmpeg 异常退出；原始文件会保留，不会被修复流程覆盖。",
+  filePath: "/volume1/录制/示例主播/2026-08-02/一个用于验证窄屏换行的很长文件名-007.mp4",
+  fileSizeBytes: 4_294_967_296,
+  durationSeconds: 1789,
+  fileExists: true,
+  canAccept: true,
+  canRepair: false,
+  canRetryRoom: false,
+  isRepairing: false,
+  createdAt: now
+};
+
 const dashboard = {
   activeRecordingCount: 1,
   liveRoomCount: 3,
@@ -160,6 +206,7 @@ async function mockApi(page: Page) {
       totalTaskCount: 1,
       totalDanmakuCount: session.totalDanmakuMessageCount
     };
+    else if (path === `/api/record-sessions/${session.id}`) body = sessionDetail;
     else if (path === "/api/record-sessions") body = [session];
     else if (path === "/api/record-tasks/upload-status") body = {
       items: [uploadTask],
@@ -170,7 +217,18 @@ async function mockApi(page: Page) {
       failedCount: 0,
       queuedCount: 0,
       uploadingCount: 0,
-      waitingRetryCount: 0
+      waitingRetryCount: 0,
+      matchingRetryableCount: 0,
+      queueHealth: { state: "Healthy", isPaused: false }
+    };
+    else if (path === "/api/recovery/recording-failures") body = {
+      items: [recordingFailure],
+      totalCount: 1
+    };
+    else if (path === "/api/recovery") body = {
+      storage: dashboard.storageStatus,
+      liveRooms: [],
+      finalizations: []
     };
     else if (path === "/api/settings") body = {};
     else if (path.includes("/record-sessions/stream")) {
@@ -204,23 +262,117 @@ test.beforeEach(async ({ page }) => {
   await mockApi(page);
 });
 
+test("login preserves the product hierarchy without viewport overflow", async ({ page }, testInfo) => {
+  await page.addInitScript(() => localStorage.clear());
+  await page.goto("/login");
+  await expect(page.getByRole("heading", { name: /让每一次开播/ })).toBeVisible();
+  await expect(page.getByRole("heading", { name: "欢迎回来" })).toBeVisible();
+  await expect(page.getByRole("button", { name: /登录控制台/ })).toBeVisible();
+  await expectNoDocumentOverflow(page);
+  await capture(page, testInfo, "login");
+});
+
 test("dashboard keeps storage semantics and the shell within the viewport", async ({ page }, testInfo) => {
   await page.goto("/");
-  await expect(page.getByRole("heading", { name: "仪表盘" })).toBeVisible();
+  await expect(page.getByRole("heading", { name: "运行中心" })).toBeVisible();
   const storage = page.getByTestId("storage-capacity");
   await expect(storage).toContainText("75.0%");
   await expect(storage).toContainText("已使用");
   await expect(storage).toContainText("25.0%");
+  if ((page.viewportSize()?.width ?? 0) <= 768) {
+    const avatarGeometry = await page.locator(".app-user-btn").evaluate((button) => {
+      const avatar = button.querySelector<SVGSVGElement>(".app-user-btn__avatar")!;
+      const circle = avatar.querySelector<SVGCircleElement>("circle")!;
+      const buttonRect = button.getBoundingClientRect();
+      const avatarRect = avatar.getBoundingClientRect();
+      const circleRect = circle.getBoundingClientRect();
+      return {
+        tagName: avatar.tagName.toLowerCase(),
+        buttonDelta: Math.abs(buttonRect.width - buttonRect.height),
+        avatarDelta: Math.abs(avatarRect.width - avatarRect.height),
+        circleDelta: Math.abs(circleRect.width - circleRect.height)
+      };
+    });
+    expect(avatarGeometry.tagName).toBe("svg");
+    expect(avatarGeometry.buttonDelta).toBeLessThanOrEqual(1);
+    expect(avatarGeometry.avatarDelta).toBeLessThanOrEqual(1);
+    expect(avatarGeometry.circleDelta).toBeLessThanOrEqual(1);
+  }
   await expectNoDocumentOverflow(page);
   await capture(page, testInfo, "dashboard");
 });
 
+test("mobile navigation animates route and active state without a tap frame", async ({ page }, testInfo) => {
+  test.skip((page.viewportSize()?.width ?? 0) > 768, "mobile navigation contract");
+  await page.emulateMedia({ reducedMotion: "no-preference" });
+  await page.goto("/");
+  await expect(page.getByRole("heading", { name: "运行中心" })).toBeVisible();
+  await expect(page.locator(".app-main")).toBeVisible();
+  await expect(page.locator(".app-bottom-nav button[aria-current='page']")).toHaveCount(1);
+
+  await page.evaluate(() => {
+    (window as Window & { __pageSwapObserved?: boolean }).__pageSwapObserved = false;
+    const observer = new MutationObserver((mutations) => {
+      if (mutations.some((mutation) =>
+        mutation.target instanceof HTMLElement && mutation.target.className.includes("page-swap-")
+      )) {
+        (window as Window & { __pageSwapObserved?: boolean }).__pageSwapObserved = true;
+        observer.disconnect();
+      }
+    });
+    observer.observe(document.querySelector(".app-main")!, {
+      subtree: true,
+      attributes: true,
+      attributeFilter: ["class"]
+    });
+  });
+
+  const recordNavigation = page.locator(".app-bottom-nav").getByRole("button", { name: "录制", exact: true });
+  const tapHighlight = await recordNavigation.evaluate((element) =>
+    getComputedStyle(element).webkitTapHighlightColor
+  );
+  expect(tapHighlight).toBe("rgba(0, 0, 0, 0)");
+
+  await recordNavigation.click();
+  await expect(page).toHaveURL(/\/live-rooms$/);
+  await expect(recordNavigation).toHaveClass(/is-active/);
+  await expect(page.locator(".app-bottom-nav button[aria-current='page']")).toHaveCount(1);
+  await expect.poll(() => page.evaluate(() =>
+    (window as Window & { __pageSwapObserved?: boolean }).__pageSwapObserved
+  )).toBeTruthy();
+  const activeIndicator = await recordNavigation.locator(".app-bottom-nav__icon").evaluate((element) => ({
+    background: getComputedStyle(element).backgroundColor,
+    duration: getComputedStyle(element).transitionDuration
+  }));
+  expect(activeIndicator.background).not.toBe("rgba(0, 0, 0, 0)");
+  expect(activeIndicator.duration).not.toBe("0s");
+  await capture(page, testInfo, "mobile-navigation-active");
+});
+
+test("dark mode teleported overlays inherit dark surfaces and borders", async ({ page }) => {
+  await page.addInitScript(() => localStorage.setItem("live-recorder-ui-theme", "dark"));
+  await page.goto("/");
+  await expect(page.locator("html")).toHaveAttribute("data-theme", "dark");
+
+  await page.locator(".app-user-btn").click();
+  const dropdown = page.locator(".el-dropdown__popper:visible").first();
+  await expect(dropdown).toBeVisible();
+  const colors = await dropdown.evaluate((element) => ({
+    background: getComputedStyle(element).backgroundColor,
+    border: getComputedStyle(element).borderTopColor,
+    rootBorder: getComputedStyle(document.documentElement).getPropertyValue("--el-border-color-light").trim()
+  }));
+  expect(colors.background).toBe("rgb(23, 34, 53)");
+  expect(colors.border).toBe("rgb(44, 60, 85)");
+  expect(colors.rootBorder).toBe("#2c3c55");
+});
+
 test("live room table, drawer and dialog retain their final actions", async ({ page }, testInfo) => {
   await page.goto("/live-rooms");
   await expect(page.getByRole("heading", { name: "直播间列表" })).toBeVisible();
   await expectNoDocumentOverflow(page);
 
-  if ((page.viewportSize()?.width ?? 0) >= 768) {
+  if ((page.viewportSize()?.width ?? 0) > 768) {
     const actionHeader = page.getByRole("columnheader", { name: "操作" }).last();
     await expect(actionHeader).toBeVisible();
     const box = await actionHeader.boundingBox();
@@ -228,10 +380,38 @@ test("live room table, drawer and dialog retain their final actions", async ({ p
   }
 
   await page.getByRole("button", { name: /^查看/ }).first().click();
+  const drawer = page.locator(".right-drawer");
   const drawerFooter = page.locator(".right-drawer__footer");
   await expect(drawerFooter).toBeVisible();
+  if ((page.viewportSize()?.width ?? 0) <= 768) {
+    const viewportWidth = page.viewportSize()?.width ?? 0;
+    await expect.poll(async () => {
+      const box = await drawer.boundingBox();
+      return Boolean(box && box.x >= -1 && box.x + box.width <= viewportWidth + 1);
+    }).toBe(true);
+    if (viewportWidth <= 640) {
+      const box = await drawer.boundingBox();
+      expect(Math.round(box?.width ?? 0)).toBe(viewportWidth);
+    }
+    const drawerBody = page.locator(".right-drawer__body");
+    const bodyOverflow = await drawerBody.evaluate((element) => ({
+      clientWidth: element.clientWidth,
+      scrollWidth: element.scrollWidth,
+      overflowY: getComputedStyle(element).overflowY
+    }));
+    expect(bodyOverflow.scrollWidth).toBeLessThanOrEqual(bodyOverflow.clientWidth);
+    expect(bodyOverflow.overflowY).toBe("auto");
+    await drawerBody.evaluate((element) => { element.scrollTop = element.scrollHeight; });
+    const lastDetailRow = page.locator(".detail-panel__descriptions tr").last();
+    await expect(lastDetailRow).toBeVisible();
+    const lastRowBox = await lastDetailRow.boundingBox();
+    const fixedFooterBox = await drawerFooter.boundingBox();
+    expect(lastRowBox && fixedFooterBox && lastRowBox.y + lastRowBox.height)
+      .toBeLessThanOrEqual((fixedFooterBox?.y ?? 0) + 1);
+  }
   const footerBox = await drawerFooter.boundingBox();
   expect(footerBox && footerBox.y + footerBox.height).toBeLessThanOrEqual((page.viewportSize()?.height ?? 0) + 1);
+  await capture(page, testInfo, "live-room-drawer");
   await page.getByRole("button", { name: "关闭", exact: true }).click();
   await expect(drawerFooter).toBeHidden();
 
@@ -246,7 +426,7 @@ test("live room table, drawer and dialog retain their final actions", async ({ p
 });
 
 test("mobile live room list paginates large collections", async ({ page }) => {
-  test.skip((page.viewportSize()?.width ?? 0) >= 768, "mobile-only pagination contract");
+  test.skip((page.viewportSize()?.width ?? 0) > 768, "mobile-only pagination contract");
   const manyRooms = Array.from({ length: 25 }, (_, index) => ({
     ...room,
     id: `room-${index + 1}`,
@@ -269,6 +449,13 @@ test("mobile live room list paginates large collections", async ({ page }) => {
 test("record task cards and tables expose one primary action", async ({ page }, testInfo) => {
   await page.goto("/record-tasks");
   await expect(page.getByRole("heading", { name: "录制任务" })).toBeVisible();
+  await expect(page.getByText("主播 · 示例主播", { exact: true })).toBeVisible();
+  if ((page.viewportSize()?.width ?? 0) <= 768) {
+    const tapHighlight = await page.getByRole("button", { name: "刷新列表" }).evaluate((element) =>
+      getComputedStyle(element).webkitTapHighlightColor
+    );
+    expect(tapHighlight).toBe("rgba(0, 0, 0, 0)");
+  }
   await expect(page.getByPlaceholder(/搜索直播间/)).toBeVisible();
   await expect(page.getByRole("button", { name: /查看/ }).first()).toBeVisible();
   await expect(page.getByRole("button", { name: /更多/ }).first()).toBeVisible();
@@ -276,7 +463,7 @@ test("record task cards and tables expose one primary action", async ({ page },
   await capture(page, testInfo, "record-tasks");
 });
 
-test("record sessions paginate on the server and bound the rendered page", async ({ page }) => {
+test("record sessions paginate on the server and bound the rendered page", async ({ page }, testInfo) => {
   const allSessions = Array.from({ length: 200 }, (_, index) => ({
     ...session,
     id: `session-${index + 1}`,
@@ -308,11 +495,11 @@ test("record sessions paginate on the server and bound the rendered page", async
   });
 
   await page.goto("/record-tasks");
-  const expectedPageSize = (page.viewportSize()?.width ?? 0) < 768 ? 12 : 20;
+  const expectedPageSize = (page.viewportSize()?.width ?? 0) <= 768 ? 12 : 20;
   await expect.poll(() => requests.length).toBeGreaterThan(0);
   expect(requests[0]).toEqual({ skip: 0, take: expectedPageSize });
   await expect(page.getByText("当前页 " + expectedPageSize + " / 共 200")).toBeVisible();
-  await expect(page.locator((page.viewportSize()?.width ?? 0) < 768 ? ".session-card" : ".session-panel"))
+  await expect(page.locator((page.viewportSize()?.width ?? 0) <= 768 ? ".session-card" : ".session-panel"))
     .toHaveCount(expectedPageSize);
   const renderedNodeCount = await page.evaluate(() => document.getElementsByTagName("*").length);
   expect(renderedNodeCount).toBeLessThan(5_000);
@@ -320,10 +507,24 @@ test("record sessions paginate on the server and bound the rendered page", async
   await page.locator(".session-pagination .btn-next").click();
   await expect.poll(() => requests.some((item) => item.skip === expectedPageSize)).toBeTruthy();
   await expect(page.getByText(`分页录制会话 ${expectedPageSize + 1}`, { exact: true })).toBeVisible();
+  if ((page.viewportSize()?.width ?? 0) <= 768) {
+    await expect(page.locator(".session-pagination__mobile .el-button")).toHaveCount(2);
+    const pageCount = Math.ceil(allSessions.length / expectedPageSize);
+    const middlePage = Math.ceil(pageCount / 2);
+    for (let pageNumber = 2; pageNumber < middlePage; pageNumber++) {
+      await page.locator(".session-pagination__mobile .btn-next").click();
+      await expect(page.getByText(`分页录制会话 ${pageNumber * expectedPageSize + 1}`, { exact: true })).toBeVisible();
+    }
+    await expect(page.locator(".session-pagination__position")).toContainText(`${middlePage}/ ${pageCount}`);
+    await expect(page.locator(".session-pagination__mobile .el-button")).toHaveCount(2);
+    await expectNoDocumentOverflow(page);
+    await page.locator(".session-pagination__mobile").scrollIntoViewIfNeeded();
+    await capture(page, testInfo, "record-session-middle-page");
+  }
 });
 
 test("mobile record session refresh keeps the current page and scroll position", async ({ page }) => {
-  test.skip((page.viewportSize()?.width ?? 0) >= 768, "mobile refresh contract");
+  test.skip((page.viewportSize()?.width ?? 0) > 768, "mobile refresh contract");
 
   await page.addInitScript(() => {
     class MockEventSource {
@@ -428,8 +629,99 @@ test("upload tasks use cards on mobile and never require table horizontal scroll
   await capture(page, testInfo, "upload-tasks");
 });
 
+test("paused uploads expose retry controls without overflowing the viewport", async ({ page }, testInfo) => {
+  await page.route("**/api/record-tasks/upload-status**", async (route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        items: [{
+          ...uploadTask,
+          uploadStatus: 5,
+          uploadAttemptCount: 3,
+          uploadErrorMessage: "OpenList 登录请求过多，队列已全局暂停，当前任务次数不会继续消耗。"
+        }],
+        totalCount: 1,
+        notUploadedCount: 0,
+        failedArtifactCount: 0,
+        succeededCount: 0,
+        failedCount: 0,
+        queuedCount: 0,
+        uploadingCount: 0,
+        waitingRetryCount: 1,
+        matchingRetryableCount: 1,
+        queueHealth: {
+          state: "RateLimited",
+          isPaused: true,
+          reason: "OpenList 登录请求触发限流。队列暂停期间不会发起新的上传请求，也不会消耗单任务重试额度。",
+          retryAt: "2026-08-02T12:15:00Z"
+        }
+      })
+    });
+  });
+
+  await page.goto("/upload-tasks");
+  await expect(page.getByText("OpenList 正在限流", { exact: true })).toBeVisible();
+  await expect(page.getByRole("button", { name: "验证并恢复队列" })).toBeVisible();
+  await expect(page.getByRole("button", { name: "重试全部匹配" })).toBeVisible();
+  const retryLabel = (page.viewportSize()?.width ?? 0) < 1280 ? "立即重试" : "重试";
+  await expect(page.getByRole("button", { name: retryLabel, exact: true })).toBeVisible();
+  await expectNoDocumentOverflow(page);
+  await capture(page, testInfo, "upload-queue-paused");
+});
+
+test("recording failure recovery adapts its actions and long paths to each viewport", async ({ page }, testInfo) => {
+  await page.goto("/recovery");
+  await expect(page.getByRole("heading", { name: "恢复中心" })).toBeVisible();
+  await expect(page.getByRole("heading", { name: "录制失败产物" })).toBeVisible();
+  await expect(page.getByText(recordingFailure.filePath, { exact: true })).toBeVisible();
+  await expect(page.getByRole("button", { name: "确认有效" })).toBeVisible();
+
+  if ((page.viewportSize()?.width ?? 0) <= 767) {
+    await expect(page.locator(".failure-card")).toHaveCount(1);
+    await expect(page.getByRole("columnheader", { name: "操作" })).toHaveCount(0);
+  } else {
+    await expect(page.locator(".failure-card")).toHaveCount(0);
+    await expect(page.getByRole("columnheader", { name: "操作" })).toBeVisible();
+  }
+
+  await expectNoDocumentOverflow(page);
+  await capture(page, testInfo, "recording-failure-recovery");
+});
+
+test("mobile session details keep segment actions visible and left aligned", async ({ page }, testInfo) => {
+  test.skip((page.viewportSize()?.width ?? 0) > 768, "mobile session detail contract");
+
+  await page.goto("/record-tasks");
+  const sessionCard = page.locator(".session-card").first();
+  await expect(sessionCard).toBeVisible();
+  await sessionCard.locator(":scope > .data-card__actions").getByRole("button", { name: "查看", exact: true }).click();
+
+  await expect(page.getByRole("heading", { name: "会话详情" })).toBeVisible();
+  await expect(page.locator(".segment-card")).toHaveCount(3);
+  await expect(page.getByRole("columnheader", { name: "操作" })).toHaveCount(0);
+
+  const firstCard = page.locator(".segment-card").first();
+  const firstActions = firstCard.locator(".segment-card__actions");
+  const cardBox = await firstCard.boundingBox();
+  const actionsBox = await firstActions.boundingBox();
+  expect(cardBox).not.toBeNull();
+  expect(actionsBox).not.toBeNull();
+  expect(actionsBox!.x - cardBox!.x).toBeLessThanOrEqual(20);
+
+  const lastActions = page.locator(".segment-card__actions").last();
+  await lastActions.scrollIntoViewIfNeeded();
+  await expect(lastActions.getByRole("button", { name: "查看分片" })).toBeVisible();
+  const actionsBottom = await lastActions.boundingBox();
+  const bottomNav = await page.locator(".app-bottom-nav").boundingBox();
+  expect(actionsBottom).not.toBeNull();
+  expect(bottomNav).not.toBeNull();
+  expect(actionsBottom!.y + actionsBottom!.height).toBeLessThanOrEqual(bottomNav!.y + 1);
+  await capture(page, testInfo, "mobile-session-detail");
+});
+
 test("mobile upload polling keeps cards and scroll position while progress updates", async ({ page }) => {
-  test.skip((page.viewportSize()?.width ?? 0) >= 768, "mobile polling contract");
+  test.skip((page.viewportSize()?.width ?? 0) > 768, "mobile polling contract");
 
   const allItems = Array.from({ length: 60 }, (_, index) => ({
     ...uploadTask,
@@ -466,7 +758,9 @@ test("mobile upload polling keeps cards and scroll position while progress updat
         failedCount: 0,
         queuedCount: 0,
         uploadingCount: allItems.length,
-        waitingRetryCount: 0
+        waitingRetryCount: 0,
+        matchingRetryableCount: 0,
+        queueHealth: { state: "Healthy", isPaused: false }
       })
     });
     inFlight--;

scripts/build-fnos-package.sh

@@ -2,7 +2,7 @@
 set -euo pipefail
 
 ROOT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
-VERSION=1.2.13
+VERSION=1.2.19
 OUTPUT="${1:-$ROOT_DIR/artifacts/fnos/liverecorder-${VERSION}-x86_64.fpk}"
 WORKSPACE_CACHE=$(CDPATH= cd -- "$ROOT_DIR/.." && pwd)
 DOTNET_BIN="${DOTNET:-$WORKSPACE_CACHE/.dotnet8/dotnet}"

scripts/smoke-short-fragment-merge.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+command -v ffmpeg >/dev/null || { echo "ffmpeg is required" >&2; exit 127; }
+command -v ffprobe >/dev/null || { echo "ffprobe is required" >&2; exit 127; }
+
+test_dir="$(mktemp -d)"
+trap 'rm -rf "$test_dir"' EXIT
+
+make_sample() {
+  local output="$1"
+  local duration="$2"
+  ffmpeg -hide_banner -loglevel error \
+    -f lavfi -i "testsrc2=size=320x180:rate=25" \
+    -f lavfi -i "sine=frequency=1000:sample_rate=48000" \
+    -t "$duration" -c:v libx264 -preset ultrafast -pix_fmt yuv420p \
+    -c:a aac -b:a 96k -movflags +faststart -y "$output"
+}
+
+make_sample "$test_dir/short-a.mp4" 1.2
+make_sample "$test_dir/short-b.mp4" 2.1
+make_sample "$test_dir/normal.mp4" 6.4
+
+run_case() {
+  local name="$1"
+  local minimum_duration="$2"
+  shift 2
+  local list="$test_dir/$name.txt"
+  local output="$test_dir/$name.mp4"
+  : > "$list"
+  for source in "$@"; do
+    printf "file '%s'\n" "$source" >> "$list"
+  done
+
+  ffmpeg -hide_banner -loglevel error -f concat -safe 0 -i "$list" \
+    -map 0 -c copy -movflags +faststart -y "$output"
+
+  local duration
+  duration="$(ffprobe -v error -show_entries format=duration -of default=nw=1:nk=1 "$output")"
+  local video_streams
+  video_streams="$(ffprobe -v error -select_streams v:0 -show_entries stream=index -of csv=p=0 "$output" | wc -l)"
+  awk -v actual="$duration" -v minimum="$minimum_duration" 'BEGIN { exit !(actual >= minimum) }'
+  test "$video_streams" -ge 1
+  echo "$name ok: duration=${duration}s"
+}
+
+run_case short_then_normal 7.0 "$test_dir/short-a.mp4" "$test_dir/normal.mp4"
+run_case normal_then_short 7.0 "$test_dir/normal.mp4" "$test_dir/short-a.mp4"
+run_case consecutive_shorts 9.0 "$test_dir/short-a.mp4" "$test_dir/short-b.mp4" "$test_dir/normal.mp4"

src/LiveRecorder.Application/Abstractions/Persistence/PersistenceContracts.cs

@@ -120,12 +120,14 @@ public interface IRecordResultRepository
 
     Task<List<(RecordResult Result, RecordTask Task)>> ListUploadStatusAsync(
         RecordArtifactUploadStatus? uploadStatusFilter,
+        string? query,
         int skip,
         int take,
         CancellationToken cancellationToken = default);
 
     Task<int> CountUploadStatusAsync(
         RecordArtifactUploadStatus? uploadStatusFilter,
+        string? query,
         CancellationToken cancellationToken = default);
 
     Task AddAsync(RecordResult recordResult, CancellationToken cancellationToken = default);

src/LiveRecorder.Application/Abstractions/Recording/IFfmpegService.cs

@@ -47,6 +47,12 @@ public interface IFfmpegService
 
     Task<int> ResumePausedFinalizationsAsync(CancellationToken cancellationToken = default);
 
+    Task<bool> StartArtifactRepairAsync(Guid recordTaskId, CancellationToken cancellationToken = default);
+
+    Task<int> ResumeArtifactRepairsAsync(CancellationToken cancellationToken = default);
+
+    Task<int> ResumeRecoveringSessionsAsync(CancellationToken cancellationToken = default);
+
     bool IsRunning(Guid recordSessionId);
 
     IReadOnlyDictionary<Guid, RecordTaskRuntimeState> GetTaskRuntimeStates(IReadOnlyCollection<Guid> recordTaskIds);

src/LiveRecorder.Application/Models/RecordTasks/RecordSessionModels.cs

@@ -12,6 +12,8 @@ public sealed class RecordSessionDto
 
     public required string LiveRoomTitle { get; init; }
 
+    public string? AnchorName { get; init; }
+
     public required LivePlatformType Platform { get; init; }
 
     public required string RoomId { get; init; }
@@ -32,6 +34,10 @@ public sealed class RecordSessionDto
 
     public string? ErrorMessage { get; init; }
 
+    public bool IsRecovering { get; init; }
+
+    public string? RecoveryReason { get; init; }
+
     public DateTimeOffset CreatedAt { get; init; }
 
     public DateTimeOffset? StartedAt { get; init; }

src/LiveRecorder.Application/Models/RecordTasks/RecordTaskModels.cs

@@ -85,6 +85,10 @@ public sealed class RecordTaskDto
 
     public double? DurationSeconds { get; init; }
 
+    public bool IsHiddenArtifactSource { get; init; }
+
+    public Guid? MergedIntoRecordTaskId { get; init; }
+
     public RecordArtifactUploadStatus? UploadStatus { get; init; }
 
     public string? PostProcessStage { get; init; }
@@ -171,6 +175,13 @@ public sealed class RecordArtifactUploadBatchResultDto
     public required IReadOnlyList<RecordArtifactUploadItemResultDto> Items { get; init; }
 }
 
+public sealed class RetryRecordArtifactUploadsRequest
+{
+    public RecordArtifactUploadStatus? UploadStatus { get; set; }
+
+    public string? Query { get; set; }
+}
+
 public sealed class ManualSegmentCompletedTriggerResultDto
 {
     public Guid RecordTaskId { get; init; }
@@ -250,4 +261,21 @@ public sealed class UploadTaskListResponse
     public int UploadingCount { get; init; }
 
     public int WaitingRetryCount { get; init; }
+
+    public int MatchingRetryableCount { get; init; }
+
+    public required UploadQueueHealthDto QueueHealth { get; init; }
+}
+
+public sealed class UploadQueueHealthDto
+{
+    public required string State { get; init; }
+
+    public bool IsPaused { get; init; }
+
+    public string? Reason { get; init; }
+
+    public DateTimeOffset? RetryAt { get; init; }
+
+    public DateTimeOffset? LastErrorAt { get; init; }
 }

src/LiveRecorder.Application/Models/Recovery/RecoveryModels.cs

@@ -9,6 +9,21 @@ public sealed class RecoveryOverviewDto
     public required IReadOnlyList<RecoverableLiveRoomDto> LiveRooms { get; init; }
 
     public required IReadOnlyList<RecoverableFinalizationDto> Finalizations { get; init; }
+
+    public required IReadOnlyList<MergedArtifactRecordDto> MergedArtifacts { get; init; }
+}
+
+public sealed class MergedArtifactRecordDto
+{
+    public Guid SourceRecordTaskId { get; init; }
+    public Guid RecordSessionId { get; init; }
+    public Guid? MergedIntoRecordTaskId { get; init; }
+    public string? SourceVideoPath { get; init; }
+    public string? MergedVideoPath { get; init; }
+    public string? RecoveryDirectory { get; init; }
+    public string? ManifestPath { get; init; }
+    public double? SourceDurationSeconds { get; init; }
+    public DateTimeOffset CreatedAt { get; init; }
 }
 
 public sealed class StorageGuardStatusDto
@@ -104,3 +119,58 @@ public sealed class RecoveryActionResultDto
 
     public required IReadOnlyList<string> Messages { get; init; }
 }
+
+public sealed class RecordingFailureListResponse
+{
+    public required IReadOnlyList<RecordingFailureItemDto> Items { get; init; }
+
+    public int TotalCount { get; init; }
+}
+
+public sealed class RecordingFailureItemDto
+{
+    public Guid RecordTaskId { get; init; }
+
+    public Guid RecordSessionId { get; init; }
+
+    public Guid LiveRoomId { get; init; }
+
+    public required string LiveRoomTitle { get; init; }
+
+    public required string RoomId { get; init; }
+
+    public required string PlatformName { get; init; }
+
+    public int SegmentIndex { get; init; }
+
+    public required string FailureKind { get; init; }
+
+    public required string FailureLabel { get; init; }
+
+    public required string RecommendedAction { get; init; }
+
+    public string? ErrorMessage { get; init; }
+
+    public string? FilePath { get; init; }
+
+    public long? FileSizeBytes { get; init; }
+
+    public double? DurationSeconds { get; init; }
+
+    public bool FileExists { get; init; }
+
+    public bool CanAccept { get; init; }
+
+    public bool CanRepair { get; init; }
+
+    public bool CanRetryRoom { get; init; }
+
+    public bool IsRepairing { get; init; }
+
+    public DateTimeOffset CreatedAt { get; init; }
+}
+
+public sealed class AcceptRecordingArtifactRequest
+{
+    public bool ConfirmShortArtifact { get; set; }
+}

src/LiveRecorder.Application/Services/RecordModelMapper.cs

@@ -27,6 +27,8 @@ internal static class RecordModelMapper
         StartedAt = recordTask.StartedAt,
         EndedAt = recordTask.EndedAt,
         DurationSeconds = recordTask.DurationSeconds,
+        IsHiddenArtifactSource = recordTask.IsHiddenArtifactSource,
+        MergedIntoRecordTaskId = recordTask.MergedIntoRecordTaskId,
         UploadStatus = recordTask.Result?.UploadStatus,
         PostProcessStage = runtimeState?.Stage,
         PostProcessProgressPercent = runtimeState?.ProgressPercent,
@@ -58,6 +60,7 @@ internal static class RecordModelMapper
         IReadOnlyDictionary<Guid, RecordTaskRuntimeState>? runtimeStates = null)
     {
         var orderedTasks = recordSession.RecordTasks
+            .Where(static item => !item.IsHiddenArtifactSource)
             .OrderBy(static item => item.SegmentIndex)
             .ThenBy(static item => item.CreatedAt)
             .ToList();
@@ -73,6 +76,7 @@ internal static class RecordModelMapper
             Id = recordSession.Id,
             LiveRoomId = recordSession.LiveRoomId,
             LiveRoomTitle = recordSession.LiveRoom?.Title ?? recordSession.LiveRoom?.AnchorName ?? recordSession.LiveRoom?.RoomId ?? "Unknown Room",
+            AnchorName = recordSession.LiveRoom?.AnchorName,
             Platform = recordSession.LiveRoom?.Platform ?? LivePlatformType.Unknown,
             RoomId = recordSession.LiveRoom?.RoomId ?? string.Empty,
             Status = recordSession.Status,
@@ -83,6 +87,12 @@ internal static class RecordModelMapper
             SegmentCount = Math.Max(recordSession.SegmentCount, orderedTasks.Count),
             RecorderProcessId = recordSession.RecorderProcessId,
             ErrorMessage = recordSession.ErrorMessage,
+            IsRecovering = recordSession.Status == RecordSessionStatus.Starting &&
+                recordSession.ErrorMessage?.StartsWith("[runtime-recovery]", StringComparison.Ordinal) == true,
+            RecoveryReason = recordSession.Status == RecordSessionStatus.Starting &&
+                recordSession.ErrorMessage?.StartsWith("[runtime-recovery]", StringComparison.Ordinal) == true
+                    ? recordSession.ErrorMessage["[runtime-recovery]".Length..].TrimStart(' ', ':', ';')
+                    : null,
             CreatedAt = recordSession.CreatedAt,
             StartedAt = recordSession.StartedAt,
             EndedAt = recordSession.EndedAt,
@@ -126,6 +136,8 @@ internal static class RecordModelMapper
             StartedAt = recordTask.StartedAt,
             EndedAt = recordTask.EndedAt,
             DurationSeconds = recordTask.DurationSeconds,
+            IsHiddenArtifactSource = recordTask.IsHiddenArtifactSource,
+            MergedIntoRecordTaskId = recordTask.MergedIntoRecordTaskId,
             UploadStatus = recordTask.Result?.UploadStatus,
             PostProcessStage = runtimeState?.Stage,
             PostProcessProgressPercent = runtimeState?.ProgressPercent,

src/LiveRecorder.Domain/Entities/RecordCompletionDispatch.cs

@@ -49,6 +49,16 @@ public sealed class RecordCompletionDispatch
         UpdatedAt = updatedAt;
     }
 
+    public void MarkSkipped(string reason, DateTimeOffset updatedAt)
+    {
+        ScriptDispatched = true;
+        UploadDispatched = true;
+        LastError = string.IsNullOrWhiteSpace(reason) ? null : reason.Trim();
+        NextAttemptAt = null;
+        CompletedAt = updatedAt;
+        UpdatedAt = updatedAt;
+    }
+
     private void CompleteIfReady(DateTimeOffset updatedAt)
     {
         if (!ScriptDispatched || !UploadDispatched)

src/LiveRecorder.Domain/Entities/RecordResult.cs

@@ -149,6 +149,17 @@ public class RecordResult
         DeletedLocalFilesAfterUpload = false;
     }
 
+    public void ResetUploadForRecoveredArtifact()
+    {
+        UploadStatus = RecordArtifactUploadStatus.NotUploaded;
+        LastUploadProvider = null;
+        RemoteVideoPath = null;
+        RemoteDanmakuPath = null;
+        LastUploadedAt = null;
+        UploadErrorMessage = null;
+        DeletedLocalFilesAfterUpload = false;
+    }
+
     private static string? NormalizeNullable(string? value) =>
         string.IsNullOrWhiteSpace(value) ? null : value.Trim();
 }

src/LiveRecorder.Domain/Entities/RecordSession.cs

@@ -81,6 +81,14 @@ public class RecordSession
         UpdatedAt = updatedAt;
     }
 
+    public void MarkRecovering(string reason, DateTimeOffset updatedAt)
+    {
+        Status = RecordSessionStatus.Starting;
+        RecorderProcessId = null;
+        ErrorMessage = string.IsNullOrWhiteSpace(reason) ? "[runtime-recovery]" : reason.Trim();
+        UpdatedAt = updatedAt;
+    }
+
     public void MarkStopping(DateTimeOffset updatedAt)
     {
         Status = RecordSessionStatus.Stopping;

src/LiveRecorder.Domain/Entities/RecordTask.cs

@@ -67,6 +67,10 @@ public class RecordTask
 
     public RecordUploadJob? UploadJob { get; private set; }
 
+    public bool IsHiddenArtifactSource { get; private set; }
+
+    public Guid? MergedIntoRecordTaskId { get; private set; }
+
     public void AssignToSession(Guid recordSessionId, int segmentIndex, DateTimeOffset updatedAt)
     {
         RecordSessionId = recordSessionId;
@@ -153,4 +157,25 @@ public class RecordTask
         RecorderProcessId = null;
         UpdatedAt = endedAt;
     }
+
+    public void MarkMergedSource(Guid mergedIntoRecordTaskId, DateTimeOffset updatedAt)
+    {
+        if (mergedIntoRecordTaskId == Guid.Empty || mergedIntoRecordTaskId == Id)
+        {
+            throw new ArgumentException("Merged target must be another recording task.", nameof(mergedIntoRecordTaskId));
+        }
+
+        IsHiddenArtifactSource = true;
+        MergedIntoRecordTaskId = mergedIntoRecordTaskId;
+        RecorderProcessId = null;
+        UpdatedAt = updatedAt;
+    }
+
+    public void MarkRecoveryOnly(DateTimeOffset updatedAt)
+    {
+        IsHiddenArtifactSource = true;
+        MergedIntoRecordTaskId = null;
+        RecorderProcessId = null;
+        UpdatedAt = updatedAt;
+    }
 }

src/LiveRecorder.Domain/Entities/RecordUploadJob.cs

@@ -136,6 +136,34 @@ public sealed class RecordUploadJob
         UpdatedAt = updatedAt;
     }
 
+    public void RequestImmediateRetry(DateTimeOffset requestedAt)
+    {
+        if (Status is not (RecordArtifactUploadStatus.Failed or RecordArtifactUploadStatus.WaitingRetry))
+        {
+            throw new InvalidOperationException("Only failed or waiting upload jobs can be retried immediately.");
+        }
+
+        Status = RecordArtifactUploadStatus.Queued;
+        AttemptCount = 0;
+        NextAttemptAt = null;
+        ErrorMessage = null;
+        CompletedAt = null;
+        RequestedAt = requestedAt;
+        UpdatedAt = requestedAt;
+    }
+
+    public void SuspendForProviderFailure(string? errorMessage, DateTimeOffset updatedAt, bool rollbackAttempt)
+    {
+        Status = RecordArtifactUploadStatus.WaitingRetry;
+        if (rollbackAttempt)
+        {
+            AttemptCount = Math.Max(0, AttemptCount - 1);
+        }
+        NextAttemptAt = null;
+        ErrorMessage = NormalizeNullable(errorMessage);
+        UpdatedAt = updatedAt;
+    }
+
     public void BeginAttempt(DateTimeOffset updatedAt)
     {
         MarkProcessing(updatedAt);

src/LiveRecorder.Infrastructure/Persistence/LiveRecorderDbContext.cs

@@ -75,6 +75,8 @@ public sealed class LiveRecorderDbContext : DbContext, IUnitOfWork
             builder.Property(static x => x.StreamUrl).HasMaxLength(2048);
             builder.Property(static x => x.OutputFilePath).HasMaxLength(2048);
             builder.Property(static x => x.ErrorMessage).HasMaxLength(2048);
+            builder.Property(static x => x.IsHiddenArtifactSource).HasDefaultValue(false);
+            builder.HasIndex(static x => x.MergedIntoRecordTaskId);
             builder.HasOne(static x => x.LiveRoom)
                 .WithMany(static x => x.RecordTasks)
                 .HasForeignKey(static x => x.LiveRoomId)
@@ -228,6 +230,7 @@ public sealed class LiveRecorderDbContext : DbContext, IUnitOfWork
             .Where(entry => entry.State is EntityState.Added or EntityState.Modified)
             .Select(static entry => entry.Entity)
             .Where(static task => task.Status is Domain.Enums.RecordTaskStatus.Completed or Domain.Enums.RecordTaskStatus.Stopped)
+            .Where(static task => !task.IsHiddenArtifactSource)
             .ToArray();
         foreach (var task in terminalTasks)
         {
@@ -239,7 +242,7 @@ public sealed class LiveRecorderDbContext : DbContext, IUnitOfWork
                 .FirstOrDefaultAsync(item => item.RecordTaskId == task.Id, cancellationToken);
             var path = result?.FilePath;
             if (string.IsNullOrWhiteSpace(path) ||
-                result?.DurationSeconds is null or < 5 ||
+                result?.DurationSeconds is null or <= 0 ||
                 (task.OutputFormat == Domain.Enums.RecordOutputFormat.Mp4 && !path.EndsWith(".mp4", StringComparison.OrdinalIgnoreCase)))
             {
                 continue;

src/LiveRecorder.Infrastructure/Persistence/Migrations/20260805143000_AddMergedArtifactTracking.cs

@@ -0,0 +1,40 @@
+using LiveRecorder.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace LiveRecorder.Infrastructure.Persistence.Migrations;
+
+[DbContext(typeof(LiveRecorderDbContext))]
+[Migration("20260805143000_AddMergedArtifactTracking")]
+public sealed class AddMergedArtifactTracking : Migration
+{
+    protected override void Up(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.AddColumn<bool>(
+            name: "IsHiddenArtifactSource",
+            table: "RecordTasks",
+            type: "boolean",
+            nullable: false,
+            defaultValue: false);
+
+        migrationBuilder.AddColumn<Guid>(
+            name: "MergedIntoRecordTaskId",
+            table: "RecordTasks",
+            type: "uuid",
+            nullable: true);
+
+        migrationBuilder.CreateIndex(
+            name: "IX_RecordTasks_MergedIntoRecordTaskId",
+            table: "RecordTasks",
+            column: "MergedIntoRecordTaskId");
+    }
+
+    protected override void Down(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.DropIndex(name: "IX_RecordTasks_MergedIntoRecordTaskId", table: "RecordTasks");
+        migrationBuilder.DropColumn(name: "IsHiddenArtifactSource", table: "RecordTasks");
+        migrationBuilder.DropColumn(name: "MergedIntoRecordTaskId", table: "RecordTasks");
+    }
+}

src/LiveRecorder.Infrastructure/Persistence/Migrations/LiveRecorderDbContextModelSnapshot.cs

@@ -192,6 +192,11 @@ namespace LiveRecorder.Infrastructure.Persistence.Migrations
                         .HasMaxLength(2048)
                         .HasColumnType("character varying(2048)");
 
+                    b.Property<bool>("IsHiddenArtifactSource")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("boolean")
+                        .HasDefaultValue(false);
+
                     b.Property<string>("LastAutoStartDecisionSummary")
                         .HasMaxLength(256)
                         .HasColumnType("character varying(256)");
@@ -411,6 +416,9 @@ namespace LiveRecorder.Infrastructure.Persistence.Migrations
                     b.Property<Guid>("LiveRoomId")
                         .HasColumnType("uuid");
 
+                    b.Property<Guid?>("MergedIntoRecordTaskId")
+                        .HasColumnType("uuid");
+
                     b.Property<int>("OutputFormat")
                         .HasColumnType("integer");
 
@@ -514,6 +522,8 @@ namespace LiveRecorder.Infrastructure.Persistence.Migrations
 
                     b.HasIndex("LiveRoomId");
 
+                    b.HasIndex("MergedIntoRecordTaskId");
+
                     b.HasIndex("RecordSessionId", "SegmentIndex")
                         .IsUnique();
 

src/LiveRecorder.Infrastructure/Persistence/Repositories/Repositories.cs

@@ -103,6 +103,8 @@ public sealed class RecordTaskRepository : IRecordTaskRepository
             .Include(item => item.UploadJob)
             .AsNoTracking();
 
+        query = query.Where(static item => !item.IsHiddenArtifactSource);
+
         if (liveRoomId.HasValue)
         {
             query = query.Where(item => item.LiveRoomId == liveRoomId.Value);
@@ -143,11 +145,11 @@ public sealed class RecordTaskRepository : IRecordTaskRepository
     public Task<double> SumDurationSecondsAsync(DateTimeOffset startedFrom, DateTimeOffset startedTo, CancellationToken cancellationToken = default) =>
         _dbContext.RecordTasks
             .Include(item => item.RecordSession)
-            .Where(item => item.RecordSession != null && item.RecordSession.StartedAt >= startedFrom && item.RecordSession.StartedAt <= startedTo)
+            .Where(item => !item.IsHiddenArtifactSource && item.RecordSession != null && item.RecordSession.StartedAt >= startedFrom && item.RecordSession.StartedAt <= startedTo)
             .SumAsync(item => item.DurationSeconds ?? 0, cancellationToken);
 
     public Task<int> CountByStatusAsync(RecordTaskStatus status, CancellationToken cancellationToken = default) =>
-        _dbContext.RecordTasks.CountAsync(item => item.Status == status, cancellationToken);
+        _dbContext.RecordTasks.CountAsync(item => !item.IsHiddenArtifactSource && item.Status == status, cancellationToken);
 
     public Task AddAsync(RecordTask recordTask, CancellationToken cancellationToken = default) =>
         _dbContext.RecordTasks.AddAsync(recordTask, cancellationToken).AsTask();
@@ -350,10 +352,11 @@ public sealed class RecordSessionRepository : IRecordSessionRepository
             cancellationToken);
         var totalTaskCount = await sessions
             .SelectMany(static item => item.RecordTasks)
+            .Where(static item => !item.IsHiddenArtifactSource)
             .CountAsync(cancellationToken);
         var totalDanmakuCount = await sessions
             .SelectMany(static item => item.RecordTasks)
-            .Where(static item => item.Result != null)
+            .Where(static item => !item.IsHiddenArtifactSource && item.Result != null)
             .SumAsync(static item => (int?)item.Result!.DanmakuMessageCount, cancellationToken) ?? 0;
 
         return new RecordSessionOverviewTotals(
@@ -530,6 +533,7 @@ public sealed class RecordResultRepository : IRecordResultRepository
 
     public async Task<List<(RecordResult Result, RecordTask Task)>> ListUploadStatusAsync(
         RecordArtifactUploadStatus? uploadStatusFilter,
+        string? searchQuery,
         int skip,
         int take,
         CancellationToken cancellationToken = default)
@@ -546,6 +550,8 @@ public sealed class RecordResultRepository : IRecordResultRepository
             query = query.Where(item => item.UploadStatus == uploadStatusFilter.Value);
         }
 
+        query = ApplyUploadSearch(query, searchQuery);
+
         var results = await query
             .OrderByDescending(item => item.CreatedAt)
             .Skip(skip)
@@ -560,6 +566,7 @@ public sealed class RecordResultRepository : IRecordResultRepository
 
     public Task<int> CountUploadStatusAsync(
         RecordArtifactUploadStatus? uploadStatusFilter,
+        string? searchQuery,
         CancellationToken cancellationToken = default)
     {
         var query = _dbContext.RecordResults.AsQueryable();
@@ -569,9 +576,33 @@ public sealed class RecordResultRepository : IRecordResultRepository
             query = query.Where(item => item.UploadStatus == uploadStatusFilter.Value);
         }
 
+        query = ApplyUploadSearch(query, searchQuery);
+
         return query.CountAsync(cancellationToken);
     }
 
+    private static IQueryable<RecordResult> ApplyUploadSearch(
+        IQueryable<RecordResult> query,
+        string? searchQuery)
+    {
+        var normalized = searchQuery?.Trim().ToLowerInvariant();
+        if (string.IsNullOrWhiteSpace(normalized))
+        {
+            return query;
+        }
+
+        var parsedTaskId = Guid.TryParse(normalized, out var taskId) ? taskId : (Guid?)null;
+        return query.Where(item =>
+            parsedTaskId.HasValue && item.RecordTaskId == parsedTaskId.Value ||
+            item.FilePath.ToLower().Contains(normalized) ||
+            item.RemoteVideoPath != null && item.RemoteVideoPath.ToLower().Contains(normalized) ||
+            item.UploadErrorMessage != null && item.UploadErrorMessage.ToLower().Contains(normalized) ||
+            item.RecordTask != null && item.RecordTask.LiveRoom != null &&
+            ((item.RecordTask.LiveRoom.Title != null && item.RecordTask.LiveRoom.Title.ToLower().Contains(normalized)) ||
+             item.RecordTask.LiveRoom.AnchorName != null && item.RecordTask.LiveRoom.AnchorName.ToLower().Contains(normalized) ||
+             item.RecordTask.LiveRoom.RoomId.ToLower().Contains(normalized)));
+    }
+
     public Task AddAsync(RecordResult recordResult, CancellationToken cancellationToken = default) =>
         _dbContext.RecordResults.AddAsync(recordResult, cancellationToken).AsTask();
 

src/LiveRecorder.Infrastructure/Services/CompletionDispatchService.cs

@@ -14,15 +14,18 @@ public sealed class CompletionDispatchService
     private readonly LiveRecorderDbContext _dbContext;
     private readonly IEventScriptService _eventScriptService;
     private readonly RecordUploadService _recordUploadService;
+    private readonly ShortFragmentConsolidationService _shortFragmentConsolidationService;
 
     public CompletionDispatchService(
         LiveRecorderDbContext dbContext,
         IEventScriptService eventScriptService,
-        RecordUploadService recordUploadService)
+        RecordUploadService recordUploadService,
+        ShortFragmentConsolidationService shortFragmentConsolidationService)
     {
         _dbContext = dbContext;
         _eventScriptService = eventScriptService;
         _recordUploadService = recordUploadService;
+        _shortFragmentConsolidationService = shortFragmentConsolidationService;
     }
 
     public async Task<bool> TryDispatchNextAsync(CancellationToken cancellationToken = default)
@@ -69,6 +72,25 @@ public sealed class CompletionDispatchService
 
         try
         {
+            var consolidation = await _shortFragmentConsolidationService.PrepareDispatchAsync(task.Id, cancellationToken);
+            if (consolidation.SkipDispatch)
+            {
+                dispatch.MarkSkipped(consolidation.Reason ?? "该分片无需独立分发。", DateTimeOffset.UtcNow);
+                await _dbContext.SaveChangesAsync(cancellationToken);
+                return;
+            }
+
+            if (!consolidation.CanDispatch)
+            {
+                var retryAt = DateTimeOffset.UtcNow.Add(consolidation.RetryDelay <= TimeSpan.Zero ? TimeSpan.FromSeconds(2) : consolidation.RetryDelay);
+                dispatch.ScheduleRetry(consolidation.Reason ?? "等待短分片判定。", retryAt, DateTimeOffset.UtcNow);
+                await _dbContext.SaveChangesAsync(cancellationToken);
+                return;
+            }
+
+            await _dbContext.Entry(task).ReloadAsync(cancellationToken);
+            await _dbContext.Entry(task).Reference(item => item.Result).LoadAsync(cancellationToken);
+
             if (!dispatch.ScriptDispatched)
             {
                 var scriptResult = await _eventScriptService.RunSegmentCompletedAsync(

src/LiveRecorder.Infrastructure/Services/FfmpegService.Runtime.cs

@@ -19,6 +19,7 @@ namespace LiveRecorder.Infrastructure.Services;
 public sealed partial class FfmpegService
 {
     private const int MaxInSessionRetryAttempts = 3;
+    private const string RuntimeRecoveryMarker = "[runtime-recovery]";
     private const string ShortUnexpectedExitArtifactError =
         "Unexpected recorder exit produced only a short fragment. The file was kept locally and excluded from automatic upload.";
     internal const string FfprobeUnreadableArtifactError = "ffprobe could not read the recorded media file.";
@@ -29,6 +30,15 @@ public sealed partial class FfmpegService
     private static readonly TimeSpan RuntimeSourceFailureWindow = TimeSpan.FromSeconds(20);
     private static readonly TimeSpan RuntimeOfflineVerificationStopTimeout = TimeSpan.FromSeconds(20);
     private static readonly TimeSpan RuntimeOfflineVerificationKillTimeout = TimeSpan.FromSeconds(8);
+    private static readonly TimeSpan OfflineConfirmationDelay = TimeSpan.FromSeconds(10);
+    private static readonly TimeSpan[] RuntimeRecoveryBackoff =
+    [
+        TimeSpan.FromSeconds(5),
+        TimeSpan.FromSeconds(15),
+        TimeSpan.FromSeconds(30),
+        TimeSpan.FromSeconds(60),
+        TimeSpan.FromSeconds(120)
+    ];
 
     private async Task HandleProcessOutputAsync(SessionProcessRuntime runtime, string? line, bool isError)
     {
@@ -221,6 +231,9 @@ public sealed partial class FfmpegService
     internal static bool IsMeaningfulUnexpectedExitArtifact(double? durationSeconds, long? fileSizeBytes) =>
         durationSeconds >= MinimumUnexpectedExitArtifactDuration.TotalSeconds;
 
+    internal static bool CanResetInSessionRetryBudget(DateTimeOffset? processStartedAt, DateTimeOffset observedAt) =>
+        processStartedAt.HasValue && observedAt - processStartedAt.Value >= StableRuntimeResetThreshold;
+
     private static bool IsRuntimeSourceFailureLine(string line)
     {
         if (line.Contains("Will reconnect at", StringComparison.OrdinalIgnoreCase) ||
@@ -567,6 +580,19 @@ public sealed partial class FfmpegService
 
     private async Task HandleProcessExitedAsync(SessionProcessRuntime runtime, Process process)
     {
+        var transition = new SessionTransitionRuntime(runtime.RecordSessionId);
+        if (!_sessionTransitions.TryAdd(runtime.RecordSessionId, transition))
+        {
+            transition.Dispose();
+            if (_sessionTransitions.TryGetValue(runtime.RecordSessionId, out var activeTransition))
+            {
+                await activeTransition.Completion.Task;
+            }
+
+            await HandleProcessExitedAsync(runtime, process);
+            return;
+        }
+
         _processes.TryRemove(runtime.RecordSessionId, out _);
 
         try
@@ -604,7 +630,16 @@ public sealed partial class FfmpegService
                 return;
             }
 
-            if (await TryRecoverUnexpectedExitAsync(runtime, activeDanmakuSummary))
+            if (!runtime.HasOpenedFirstSegment &&
+                !runtime.StopRequested &&
+                !runtime.CompletionRequested &&
+                !runtime.ShutdownRequested &&
+                await TryRecoverStartupUntilAvailableAsync(runtime, transition))
+            {
+                return;
+            }
+
+            if (await TryRecoverUnexpectedExitAsync(runtime, activeDanmakuSummary, transition))
             {
                 return;
             }
@@ -617,12 +652,110 @@ public sealed partial class FfmpegService
         }
         finally
         {
+            _sessionTransitions.TryRemove(runtime.RecordSessionId, out _);
+            transition.Completion.TrySetResult(true);
+            transition.Dispose();
             runtime.ExitCompletion.TrySetResult(true);
             runtime.Dispose();
             process.Dispose();
         }
     }
 
+    private async Task<bool> TryRecoverStartupUntilAvailableAsync(
+        SessionProcessRuntime runtime,
+        SessionTransitionRuntime transition)
+    {
+        var attempt = transition.NextAttempt(Math.Max(1, runtime.RetryAttemptCount + 1));
+        while (!transition.Token.IsCancellationRequested)
+        {
+            try
+            {
+                using var scope = _serviceScopeFactory.CreateScope();
+                var dbContext = scope.ServiceProvider.GetRequiredService<LiveRecorderDbContext>();
+                var session = await dbContext.RecordSessions
+                    .Include(item => item.LiveRoom)
+                    .Include(item => item.RecordTasks)
+                    .ThenInclude(item => item.Result)
+                    .FirstOrDefaultAsync(item => item.Id == runtime.RecordSessionId, transition.Token);
+                if (session?.LiveRoom is null || !IsActiveSessionStatus(session.Status))
+                {
+                    return false;
+                }
+
+                var currentTask = session.RecordTasks.FirstOrDefault(item => item.Id == runtime.CurrentTaskId)
+                    ?? session.RecordTasks.OrderByDescending(item => item.SegmentIndex).FirstOrDefault();
+                if (currentTask is null)
+                {
+                    return false;
+                }
+
+                var delay = GetRuntimeRecoveryDelay(attempt);
+                session.MarkRecovering(
+                    $"{RuntimeRecoveryMarker} attempt={attempt}; startup did not open a media segment",
+                    DateTimeOffset.UtcNow);
+                currentTask.MarkStarting(runtime.StreamUrl, currentTask.OutputFilePath ?? runtime.CurrentOutputFilePath, DateTimeOffset.UtcNow);
+                await dbContext.SaveChangesAsync(transition.Token);
+
+                var logService = scope.ServiceProvider.GetRequiredService<ISystemLogService>();
+                await logService.WriteAsync(
+                    SystemLogLevel.Warning,
+                    "FFmpeg",
+                    $"Recorder startup is recovering in the same session (attempt {attempt}).",
+                    $"delaySeconds={delay.TotalSeconds:0}; ffmpegExit={runtime.Process?.ExitCode}; curlExit={runtime.CurlExitCode?.ToString() ?? "unknown"}; output={runtime.GetRecentOutputSummary()}; curl={runtime.GetRecentCurlErrorSummary()}",
+                    session.LiveRoomId,
+                    session.Id,
+                    currentTask.Id,
+                    transition.Token);
+
+                await Task.Delay(delay, transition.Token);
+                var adapterFactory = scope.ServiceProvider.GetRequiredService<ILivePlatformAdapterFactory>();
+                var adapter = adapterFactory.GetByPlatform(session.LiveRoom.Platform);
+                var liveStatus = await adapter.GetLiveStatusAsync(session.LiveRoom.RoomId, transition.Token);
+                if (!liveStatus.IsLive)
+                {
+                    await Task.Delay(OfflineConfirmationDelay, transition.Token);
+                    liveStatus = await adapter.GetLiveStatusAsync(session.LiveRoom.RoomId, transition.Token);
+                }
+
+                if (!liveStatus.IsLive)
+                {
+                    runtime.MarkStopRequested(markAsCompletedOnExit: true);
+                    return false;
+                }
+
+                var stream = await adapter.GetStreamUrlAsync(session.LiveRoom.RoomId, session.PreferredQuality, transition.Token);
+                var selected = SelectRetryStreamForCurrentSession(stream, runtime);
+                var context = runtime.RecoveryContext with
+                {
+                    AttemptCount = attempt,
+                    HasRetriedWithRefreshedStream = true
+                };
+                session.MarkStarting(selected.SelectedUrl, session.OutputPathPattern ?? runtime.OutputPathPattern, DateTimeOffset.UtcNow);
+                currentTask.MarkStarting(selected.SelectedUrl, currentTask.OutputFilePath ?? runtime.CurrentOutputFilePath, DateTimeOffset.UtcNow);
+                await dbContext.SaveChangesAsync(transition.Token);
+
+                await StartInternalAsync(session, currentTask, selected, runtime.RecordingSettings, context, transition.Token);
+                var restartedAt = DateTimeOffset.UtcNow;
+                session.MarkRunning(restartedAt);
+                currentTask.MarkRunning(restartedAt);
+                await dbContext.SaveChangesAsync(transition.Token);
+                return true;
+            }
+            catch (OperationCanceledException) when (transition.Token.IsCancellationRequested)
+            {
+                runtime.MarkStopRequested(transition.MarkAsCompletedOnExit);
+                return false;
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "Recorder startup recovery attempt {Attempt} failed for session {RecordSessionId}", attempt, runtime.RecordSessionId);
+                attempt = transition.NextAttempt(attempt + 1);
+            }
+        }
+
+        return false;
+    }
+
     private async Task<bool> TryRecoverStartupFailureAsync(SessionProcessRuntime runtime)
     {
         if (runtime.ShutdownRequested ||
@@ -885,14 +1018,14 @@ public sealed partial class FfmpegService
 
     private async Task<bool> TryRecoverUnexpectedExitAsync(
         SessionProcessRuntime runtime,
-        SessionDanmakuXmlRecorder.DanmakuSegmentSummary? activeDanmakuSummary)
+        SessionDanmakuXmlRecorder.DanmakuSegmentSummary? activeDanmakuSummary,
+        SessionTransitionRuntime transition)
     {
         if (!runtime.HasOpenedFirstSegment ||
             runtime.StopRequested ||
             runtime.CompletionRequested ||
             runtime.ShutdownRequested ||
-            runtime.SaveMode != RecordSaveMode.Segmented ||
-            runtime.RetryAttemptCount >= MaxInSessionRetryAttempts)
+            runtime.SaveMode != RecordSaveMode.Segmented)
         {
             return false;
         }
@@ -929,15 +1062,20 @@ public sealed partial class FfmpegService
             var observedAt = DateTimeOffset.UtcNow;
             var adapter = adapterFactory.GetByPlatform(session.LiveRoom.Platform);
             var liveStatus = await adapter.GetLiveStatusAsync(session.LiveRoom.RoomId);
+            if (!liveStatus.IsLive)
+            {
+                await Task.Delay(OfflineConfirmationDelay, transition.Token);
+                liveStatus = await adapter.GetLiveStatusAsync(session.LiveRoom.RoomId, transition.Token);
+            }
             await liveRoomStatusService.ApplySnapshotAsync(session.LiveRoom, liveStatus, observedAt);
             await dbContext.SaveChangesAsync();
 
             if (!liveStatus.IsLive)
             {
+                runtime.MarkStopRequested(markAsCompletedOnExit: true);
                 return false;
             }
 
-            var retryAttempt = runtime.RetryAttemptCount + 1;
             var refreshedStream = await adapter.GetStreamUrlAsync(session.LiveRoom.RoomId, session.PreferredQuality);
             var retryStream = SelectRetryStreamForCurrentSession(refreshedStream, runtime);
             var nextSegmentIndex = Math.Max(currentTask.SegmentIndex + 1, session.ActiveSegmentIndex + 1);
@@ -957,11 +1095,17 @@ public sealed partial class FfmpegService
             await dbContext.SaveChangesAsync();
 
             var retryInputOptionProfile = ResolveRetryInputOptionProfile(runtime);
+            var stableBeforeExit = runtime.ProcessStartedAt.HasValue &&
+                                   observedAt - runtime.ProcessStartedAt.Value >= StableRuntimeResetThreshold;
+            var recoveryBase = stableBeforeExit
+                ? InitialRecoveryContext
+                : runtime.RecoveryContext;
             var recoveryContext = AdvanceRecoveryContext(
-                runtime.RecoveryContext,
+                recoveryBase,
                 retryInputOptionProfile,
                 runtime.SelectedProtocol,
                 retryStream.SelectedProtocol);
+            var retryAttempt = recoveryContext.AttemptCount;
             try
             {
                 await StartInternalAsync(
@@ -1063,7 +1207,7 @@ public sealed partial class FfmpegService
             await logService.WriteAsync(
                 SystemLogLevel.Warning,
                 "FFmpeg",
-                $"ffmpeg exited unexpectedly. Retrying within the current session ({retryAttempt}/{MaxInSessionRetryAttempts}).",
+                $"ffmpeg exited unexpectedly. Retrying within the current session (attempt {retryAttempt}).",
                 $"transition={runtime.InputOptionProfile}/{runtime.SelectedProtocol} -> {retryInputOptionProfile}/{retryStream.SelectedProtocol}; output={runtime.GetRecentOutputSummary()}",
                 session.LiveRoomId,
                 session.Id,
@@ -1074,10 +1218,82 @@ public sealed partial class FfmpegService
         catch (Exception ex)
         {
             _logger.LogWarning(ex, "In-session ffmpeg retry failed for session {RecordSessionId}", runtime.RecordSessionId);
-            return false;
+            return await WaitAndRetryRecoveringSessionAsync(runtime, activeDanmakuSummary, transition, ex);
         }
     }
 
+    private async Task<bool> WaitAndRetryRecoveringSessionAsync(
+        SessionProcessRuntime runtime,
+        SessionDanmakuXmlRecorder.DanmakuSegmentSummary? activeDanmakuSummary,
+        SessionTransitionRuntime transition,
+        Exception failure)
+    {
+        var attempt = transition.NextAttempt(Math.Max(1, runtime.RetryAttemptCount + 1));
+        while (!transition.Token.IsCancellationRequested && !runtime.ShutdownRequested)
+        {
+            try
+            {
+                using (var scope = _serviceScopeFactory.CreateScope())
+                {
+                    var dbContext = scope.ServiceProvider.GetRequiredService<LiveRecorderDbContext>();
+                    var session = await dbContext.RecordSessions.FirstOrDefaultAsync(
+                        item => item.Id == runtime.RecordSessionId,
+                        CancellationToken.None);
+                    if (session is null || !IsActiveSessionStatus(session.Status))
+                    {
+                        return false;
+                    }
+
+                    var reason = $"{RuntimeRecoveryMarker} attempt={attempt}; {failure.GetBaseException().Message}";
+                    session.MarkRecovering(reason, DateTimeOffset.UtcNow);
+                    await dbContext.SaveChangesAsync(CancellationToken.None);
+
+                    var logService = scope.ServiceProvider.GetRequiredService<ISystemLogService>();
+                    await logService.WriteAsync(
+                        SystemLogLevel.Warning,
+                        "FFmpeg",
+                        $"Recorder recovery is waiting before attempt {attempt}.",
+                        $"delaySeconds={GetRuntimeRecoveryDelay(attempt).TotalSeconds:0}; failure={failure}",
+                        runtime.LiveRoomId,
+                        runtime.RecordSessionId,
+                        runtime.CurrentTaskId,
+                        CancellationToken.None);
+                }
+
+                await Task.Delay(GetRuntimeRecoveryDelay(attempt), transition.Token);
+                if (transition.MarkAsCompletedOnExit)
+                {
+                    runtime.MarkStopRequested(markAsCompletedOnExit: true);
+                    return false;
+                }
+
+                if (transition.StopRequested)
+                {
+                    runtime.MarkStopRequested(markAsCompletedOnExit: false);
+                    return false;
+                }
+
+                // Re-enter the normal recovery path with a fresh platform status and stream URL.
+                return await TryRecoverUnexpectedExitAsync(runtime, activeDanmakuSummary, transition);
+            }
+            catch (OperationCanceledException) when (transition.Token.IsCancellationRequested)
+            {
+                runtime.MarkStopRequested(transition.MarkAsCompletedOnExit);
+                return false;
+            }
+            catch (Exception ex)
+            {
+                failure = ex;
+                attempt = transition.NextAttempt(attempt + 1);
+            }
+        }
+
+        return false;
+    }
+
+    internal static TimeSpan GetRuntimeRecoveryDelay(int attempt) =>
+        RuntimeRecoveryBackoff[Math.Clamp(attempt - 1, 0, RuntimeRecoveryBackoff.Length - 1)];
+
     private async Task<bool> TryRetryWithAlternateProtocolAsync(
         SessionProcessRuntime runtime,
         RecordSession session,
@@ -1543,7 +1759,9 @@ public sealed partial class FfmpegService
             $"exitCode={exitCode}",
             $"output={effectiveOutputPath}",
             $"recorderOutput={runtime.RecorderOutputPath}",
-            $"shutdownRequested={runtime.ShutdownRequested}"
+            $"shutdownRequested={runtime.ShutdownRequested}",
+            $"lifetimeSeconds={(runtime.ProcessStartedAt.HasValue ? Math.Max(0, (DateTimeOffset.UtcNow - runtime.ProcessStartedAt.Value).TotalSeconds).ToString("F1", CultureInfo.InvariantCulture) : "unknown")}",
+            $"curlExitCode={runtime.CurlExitCode?.ToString(CultureInfo.InvariantCulture) ?? "unknown"}"
         };
 
         if (toleratedNonZeroExit)
@@ -1567,6 +1785,12 @@ public sealed partial class FfmpegService
             parts.Add($"recentOutput={recentOutput}");
         }
 
+        var recentCurlError = runtime.GetRecentCurlErrorSummary();
+        if (!string.IsNullOrWhiteSpace(recentCurlError))
+        {
+            parts.Add($"curlStderr={recentCurlError}");
+        }
+
         return string.Join("; ", parts);
     }
 
@@ -2280,6 +2504,7 @@ public sealed partial class FfmpegService
         private object RuntimeSourceFailureSync { get; } = new();
         private object RecentOutputSync { get; } = new();
         private Queue<string> RecentOutputLines { get; } = new();
+        private Queue<string> RecentCurlErrorLines { get; } = new();
         private DateTimeOffset RuntimeSourceFailureWindowStartedAt { get; set; }
         private int RuntimeSourceFailureCount { get; set; }
         private bool RuntimeSourceFailureVerificationInProgress { get; set; }
@@ -2290,6 +2515,14 @@ public sealed partial class FfmpegService
             ProcessStartedAt = DateTimeOffset.UtcNow;
         }
         public void AttachCurlProcess(Process curlProcess) => CurlProcess = curlProcess;
+        public int? CurlExitCode
+        {
+            get
+            {
+                try { return CurlProcess?.HasExited == true ? CurlProcess.ExitCode : null; }
+                catch { return null; }
+            }
+        }
         public void MarkTimestampDiscontinuityFailure() => HasTimestampDiscontinuityFailure = true;
         public void MarkTimestampMuxerFailure() => HasTimestampMuxerFailure = true;
         public void MarkHlsOverlongHeadersFailure() => HasHlsOverlongHeadersFailure = true;
@@ -2353,6 +2586,28 @@ public sealed partial class FfmpegService
             }
         }
 
+        public void RememberCurlErrorLine(string line)
+        {
+            lock (RecentOutputSync)
+            {
+                RecentCurlErrorLines.Enqueue(line.Trim());
+                while (RecentCurlErrorLines.Count > 8)
+                {
+                    RecentCurlErrorLines.Dequeue();
+                }
+            }
+        }
+
+        public string? GetRecentCurlErrorSummary()
+        {
+            lock (RecentOutputSync)
+            {
+                return RecentCurlErrorLines.Count == 0
+                    ? null
+                    : string.Join(" | ", RecentCurlErrorLines);
+            }
+        }
+
         public void ResetCurrentRecorderSegmentPaths(string openedPath)
         {
             CurrentRecorderSegmentPaths.Clear();
@@ -2428,6 +2683,41 @@ public sealed partial class FfmpegService
             Gate.Dispose();
         }
     }
+
+    private sealed class SessionTransitionRuntime : IDisposable
+    {
+        private readonly CancellationTokenSource _cancellation = new();
+
+        public SessionTransitionRuntime(Guid recordSessionId) => RecordSessionId = recordSessionId;
+
+        public Guid RecordSessionId { get; }
+        public bool StopRequested { get; private set; }
+        public bool MarkAsCompletedOnExit { get; private set; }
+        public CancellationToken Token => _cancellation.Token;
+        public TaskCompletionSource<bool> Completion { get; } = new(TaskCreationOptions.RunContinuationsAsynchronously);
+        private int _attemptCount;
+
+        public int NextAttempt(int minimum)
+        {
+            var next = Interlocked.Increment(ref _attemptCount);
+            if (next >= minimum)
+            {
+                return next;
+            }
+
+            Interlocked.Exchange(ref _attemptCount, minimum);
+            return minimum;
+        }
+
+        public void RequestStop(bool markAsCompletedOnExit)
+        {
+            StopRequested = true;
+            MarkAsCompletedOnExit = markAsCompletedOnExit;
+            _cancellation.Cancel();
+        }
+
+        public void Dispose() => _cancellation.Dispose();
+    }
 }
 
 internal enum ExitedRecordingDisposition

src/LiveRecorder.Infrastructure/Services/FfmpegService.Utils.cs

@@ -678,6 +678,119 @@ public sealed partial class FfmpegService
         return arguments;
     }
 
+    private async Task<(string OutputPath, string? ErrorMessage)> TryRepairArtifactFileAsync(
+        string ffmpegPath,
+        int maxConcurrentTranscodeTasks,
+        int timeoutMinutes,
+        Guid recordTaskId,
+        string sourcePath,
+        string targetPath,
+        CancellationToken cancellationToken)
+    {
+        if (File.Exists(targetPath))
+        {
+            var existing = await ValidateMediaArtifactAsync(targetPath, RecordOutputFormat.Mp4, cancellationToken);
+            if (existing.IsValid)
+            {
+                return (targetPath, null);
+            }
+
+            File.Delete(targetPath);
+        }
+
+        var temporaryPath = $"{targetPath}.repairing";
+        string? lastError = null;
+        foreach (var strategy in new[] { Mp4FinalizeStrategy.StreamCopy, Mp4FinalizeStrategy.RepairTranscode })
+        {
+            if (File.Exists(temporaryPath))
+            {
+                File.Delete(temporaryPath);
+            }
+
+            using var transcodeSlot = await AcquireTranscodeSlotAsync(maxConcurrentTranscodeTasks, cancellationToken);
+            using var process = new Process
+            {
+                StartInfo = new ProcessStartInfo
+                {
+                    FileName = ffmpegPath,
+                    UseShellExecute = false,
+                    RedirectStandardError = true,
+                    RedirectStandardOutput = true,
+                    CreateNoWindow = true
+                }
+            };
+            var processStarted = false;
+            foreach (var argument in BuildMp4FinalizeArgumentList(sourcePath, temporaryPath, strategy))
+            {
+                process.StartInfo.ArgumentList.Add(argument);
+            }
+
+            try
+            {
+                process.Start();
+                processStarted = true;
+                _postProcessProcesses[recordTaskId] = process;
+                using var timeout = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
+                timeout.CancelAfter(TimeSpan.FromMinutes(Math.Clamp(timeoutMinutes, 1, 1440)));
+                var stdout = process.StandardOutput.ReadToEndAsync(timeout.Token);
+                var stderr = process.StandardError.ReadToEndAsync(timeout.Token);
+                await process.WaitForExitAsync(timeout.Token);
+                await stdout;
+                lastError = await stderr;
+
+                if (process.ExitCode == 0 && File.Exists(temporaryPath))
+                {
+                    var validation = await ValidateMediaArtifactAsync(
+                        temporaryPath,
+                        RecordOutputFormat.Mp4,
+                        cancellationToken);
+                    if (validation.IsValid)
+                    {
+                        File.Move(temporaryPath, targetPath, overwrite: true);
+                        return (targetPath, null);
+                    }
+
+                    lastError = validation.ErrorMessage;
+                }
+            }
+            catch (OperationCanceledException)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                {
+                    throw;
+                }
+
+                lastError = $"FFmpeg 修复超过 {Math.Clamp(timeoutMinutes, 1, 1440)} 分钟限制。";
+            }
+            finally
+            {
+                _postProcessProcesses.TryRemove(recordTaskId, out _);
+                if (processStarted && !process.HasExited)
+                {
+                    try
+                    {
+                        process.Kill(true);
+                    }
+                    catch (Exception ex)
+                    {
+                        _logger.LogWarning(ex, "Failed to stop artifact repair process for task {RecordTaskId}", recordTaskId);
+                    }
+                }
+
+                if (File.Exists(temporaryPath))
+                {
+                    File.Delete(temporaryPath);
+                }
+            }
+        }
+
+        return (
+            targetPath,
+            string.IsNullOrWhiteSpace(lastError)
+                ? "FFmpeg 无法从该文件生成可读取的视频。"
+                : lastError.Trim());
+    }
+
     internal static bool IsRepairableMp4FinalizeError(string errorDetail)
     {
         if (IsLowStoragePauseError(errorDetail))
@@ -1067,13 +1180,18 @@ public sealed partial class FfmpegService
             return MediaArtifactValidation.Invalid("The recorded media file does not contain a video stream.", metadata.DurationSeconds);
         }
 
-        if (!metadata.DurationSeconds.HasValue ||
-            metadata.DurationSeconds.Value < MinimumUnexpectedExitArtifactDuration.TotalSeconds)
+        if (!IsReadableMediaDuration(metadata.DurationSeconds))
         {
-            return MediaArtifactValidation.Invalid(ShortUnexpectedExitArtifactError, metadata.DurationSeconds);
+            return MediaArtifactValidation.Invalid("The recorded media file has no readable duration.", metadata.DurationSeconds);
         }
 
-        return new MediaArtifactValidation(true, metadata.DurationSeconds, null);
+        return new MediaArtifactValidation(
+            true,
+            metadata.DurationSeconds,
+            IsStandaloneMediaDuration(metadata.DurationSeconds),
+            !IsStandaloneMediaDuration(metadata.DurationSeconds)
+                ? ShortUnexpectedExitArtifactError
+                : null);
     }
 
     private static async Task UpsertRecordResultAsync(
@@ -1458,6 +1576,10 @@ public sealed partial class FfmpegService
     private static bool IsTerminalSessionStatus(RecordSessionStatus status) =>
         status is RecordSessionStatus.Completed or RecordSessionStatus.Failed or RecordSessionStatus.Stopped;
 
+    internal static bool IsReadableMediaDuration(double? durationSeconds) => durationSeconds is > 0;
+
+    internal static bool IsStandaloneMediaDuration(double? durationSeconds) => durationSeconds is >= 5;
+
     private static bool TryParseFfmpegProgressSeconds(string line, out double seconds)
     {
         if (line.StartsWith("out_time=", StringComparison.OrdinalIgnoreCase))
@@ -1495,10 +1617,14 @@ public sealed partial class FfmpegService
         TimestampTranscode = 3
     }
 
-    private sealed record MediaArtifactValidation(bool IsValid, double? DurationSeconds, string? ErrorMessage)
+    private sealed record MediaArtifactValidation(
+        bool IsValid,
+        double? DurationSeconds,
+        bool IsStandaloneEligible,
+        string? ErrorMessage)
     {
         public static MediaArtifactValidation Invalid(string errorMessage, double? durationSeconds = null) =>
-            new(false, durationSeconds, errorMessage);
+            new(false, durationSeconds, false, errorMessage);
     }
 
     private enum StartupFailureKind

src/LiveRecorder.Infrastructure/Services/FfmpegService.cs

@@ -21,6 +21,7 @@ namespace LiveRecorder.Infrastructure.Services;
 
 public sealed partial class FfmpegService : IFfmpegService
 {
+    private const string ArtifactRepairMarker = "[artifact-repair]";
     private static readonly Regex SegmentOpeningRegex = new(
         """Opening '([^']+)' for writing""",
         RegexOptions.Compiled | RegexOptions.CultureInvariant | RegexOptions.IgnoreCase);
@@ -32,6 +33,7 @@ public sealed partial class FfmpegService : IFfmpegService
     private static readonly TimeSpan RuntimeFailureBaseBackoff = TimeSpan.FromSeconds(15);
 
     private readonly ConcurrentDictionary<Guid, SessionProcessRuntime> _processes = new();
+    private readonly ConcurrentDictionary<Guid, SessionTransitionRuntime> _sessionTransitions = new();
     private readonly ConcurrentDictionary<Guid, PostProcessRuntimeEntry> _postProcessStates = new();
     private readonly ConcurrentDictionary<Guid, Process> _postProcessProcesses = new();
     private readonly ConcurrentDictionary<Guid, RoomStartupFailureState> _roomStartupFailureStates = new();
@@ -62,7 +64,16 @@ public sealed partial class FfmpegService : IFfmpegService
         _logger = logger;
     }
 
-    public bool IsRunning(Guid recordSessionId) => _processes.ContainsKey(recordSessionId);
+    public bool IsRunning(Guid recordSessionId) =>
+        IsSessionRuntimeActive(
+            _processes.ContainsKey(recordSessionId),
+            _sessionTransitions.ContainsKey(recordSessionId));
+
+    internal static bool IsSessionRuntimeActive(bool hasProcess, bool hasTransition) =>
+        hasProcess || hasTransition;
+
+    internal static bool ShouldReuseRecoveryTask(bool hasMedia, RecordTaskStatus status) =>
+        !hasMedia && status is RecordTaskStatus.Pending or RecordTaskStatus.Starting or RecordTaskStatus.Running or RecordTaskStatus.Stopping;
 
     public IReadOnlyDictionary<Guid, RecordTaskRuntimeState> GetTaskRuntimeStates(IReadOnlyCollection<Guid> recordTaskIds)
     {
@@ -83,6 +94,120 @@ public sealed partial class FfmpegService : IFfmpegService
         return snapshot;
     }
 
+    public async Task<int> ResumeRecoveringSessionsAsync(CancellationToken cancellationToken = default)
+    {
+        using var lookupScope = _serviceScopeFactory.CreateScope();
+        var lookupDb = lookupScope.ServiceProvider.GetRequiredService<LiveRecorderDbContext>();
+        var candidates = await lookupDb.RecordSessions
+            .AsNoTracking()
+            .Where(item => item.Status == RecordSessionStatus.Starting &&
+                           item.ErrorMessage != null &&
+                           item.ErrorMessage.StartsWith("[runtime-recovery]"))
+            .OrderBy(item => item.UpdatedAt)
+            .Select(item => item.Id)
+            .Take(20)
+            .ToListAsync(cancellationToken);
+
+        var resumed = 0;
+        foreach (var sessionId in candidates)
+        {
+            if (IsRunning(sessionId))
+            {
+                continue;
+            }
+
+            var transition = new SessionTransitionRuntime(sessionId);
+            if (!_sessionTransitions.TryAdd(sessionId, transition))
+            {
+                transition.Dispose();
+                continue;
+            }
+
+            try
+            {
+                using var scope = _serviceScopeFactory.CreateScope();
+                var dbContext = scope.ServiceProvider.GetRequiredService<LiveRecorderDbContext>();
+                var session = await dbContext.RecordSessions
+                    .Include(item => item.LiveRoom)
+                    .Include(item => item.RecordTasks)
+                    .ThenInclude(item => item.Result)
+                    .FirstOrDefaultAsync(item => item.Id == sessionId, cancellationToken);
+                if (session?.LiveRoom is null || session.Status != RecordSessionStatus.Starting)
+                {
+                    continue;
+                }
+
+                if (string.IsNullOrWhiteSpace(session.OutputPathPattern))
+                {
+                    _logger.LogWarning("Recovering session {RecordSessionId} has no output path pattern and cannot be resumed.", session.Id);
+                    continue;
+                }
+
+                var adapterFactory = scope.ServiceProvider.GetRequiredService<ILivePlatformAdapterFactory>();
+                var adapter = adapterFactory.GetByPlatform(session.LiveRoom.Platform);
+                var liveStatus = await adapter.GetLiveStatusAsync(session.LiveRoom.RoomId, cancellationToken);
+                if (!liveStatus.IsLive)
+                {
+                    continue;
+                }
+
+                var stream = await adapter.GetStreamUrlAsync(session.LiveRoom.RoomId, session.PreferredQuality, cancellationToken);
+                var latest = session.RecordTasks
+                    .OrderByDescending(item => item.SegmentIndex)
+                    .ThenByDescending(item => item.CreatedAt)
+                    .FirstOrDefault();
+                var hasMedia = latest?.Result is { DurationSeconds: > 0 } result && File.Exists(result.FilePath);
+                RecordTask task;
+                if (latest is not null && ShouldReuseRecoveryTask(hasMedia, latest.Status))
+                {
+                    task = latest;
+                }
+                else
+                {
+                    var nextIndex = Math.Max(1, (latest?.SegmentIndex ?? 0) + 1);
+                    task = new RecordTask(session.LiveRoomId, session.Id, nextIndex, session.PreferredQuality, session.OutputFormat, DateTimeOffset.UtcNow);
+                    var output = NormalizeAbsolutePath(ResolveSegmentOutputPath(session.OutputPathPattern, session.SaveMode, nextIndex));
+                    task.MarkStarting(stream.SelectedUrl, output, DateTimeOffset.UtcNow);
+                    await dbContext.RecordTasks.AddAsync(task, cancellationToken);
+                }
+
+                var settingsResolver = scope.ServiceProvider.GetRequiredService<LiveRoomRecordingSettingsResolver>();
+                var recordingSettings = await settingsResolver.ResolveAsync(session.LiveRoom, cancellationToken);
+                var taskOutputPath = string.IsNullOrWhiteSpace(task.OutputFilePath)
+                    ? NormalizeAbsolutePath(ResolveSegmentOutputPath(session.OutputPathPattern, session.SaveMode, task.SegmentIndex))
+                    : task.OutputFilePath;
+                session.MarkStarting(stream.SelectedUrl, session.OutputPathPattern, DateTimeOffset.UtcNow);
+                session.ActivateSegment(task.SegmentIndex, DateTimeOffset.UtcNow);
+                task.MarkStarting(stream.SelectedUrl, taskOutputPath, DateTimeOffset.UtcNow);
+                await dbContext.SaveChangesAsync(cancellationToken);
+
+                await StartInternalAsync(
+                    session,
+                    task,
+                    stream,
+                    recordingSettings,
+                    InitialRecoveryContext with { AttemptCount = 1, HasRetriedWithRefreshedStream = true },
+                    cancellationToken);
+                session.MarkRunning(DateTimeOffset.UtcNow);
+                task.MarkRunning(DateTimeOffset.UtcNow);
+                await dbContext.SaveChangesAsync(cancellationToken);
+                resumed++;
+            }
+            catch (Exception ex) when (!cancellationToken.IsCancellationRequested)
+            {
+                _logger.LogWarning(ex, "Failed to resume persisted recorder recovery for session {RecordSessionId}", sessionId);
+            }
+            finally
+            {
+                _sessionTransitions.TryRemove(sessionId, out _);
+                transition.Completion.TrySetResult(true);
+                transition.Dispose();
+            }
+        }
+
+        return resumed;
+    }
+
     public Task CompleteAsync(Guid recordSessionId, CancellationToken cancellationToken = default) =>
         RequestStopAsync(recordSessionId, markAsCompletedOnExit: true, cancellationToken);
 
@@ -229,6 +354,7 @@ public sealed partial class FfmpegService : IFfmpegService
             {
                 if (!string.IsNullOrWhiteSpace(args.Data))
                 {
+                    runtime.RememberCurlErrorLine(args.Data);
                     _logger.LogDebug("curl[{SessionId}] {Line}", recordSession.Id, args.Data);
                 }
             };
@@ -283,6 +409,12 @@ public sealed partial class FfmpegService : IFfmpegService
     {
         if (!_processes.TryGetValue(recordSessionId, out var runtime))
         {
+            if (_sessionTransitions.TryGetValue(recordSessionId, out var transition))
+            {
+                transition.RequestStop(markAsCompletedOnExit);
+                return await WaitForTransitionAsync(transition, timeout, cancellationToken);
+            }
+
             return true;
         }
 
@@ -297,6 +429,12 @@ public sealed partial class FfmpegService : IFfmpegService
     {
         if (!_processes.TryGetValue(recordSessionId, out var runtime))
         {
+            if (_sessionTransitions.TryGetValue(recordSessionId, out var transition))
+            {
+                transition.RequestStop(markAsCompletedOnExit: false);
+                return await WaitForTransitionAsync(transition, timeout, cancellationToken);
+            }
+
             return true;
         }
 
@@ -340,6 +478,7 @@ public sealed partial class FfmpegService : IFfmpegService
         CancellationToken cancellationToken = default)
     {
         var runtimes = _processes.Values.ToArray();
+        var transitions = _sessionTransitions.Values.ToArray();
         foreach (var runtime in runtimes)
         {
             // Mark the captured runtime before looking it up again. The process may exit
@@ -355,7 +494,13 @@ public sealed partial class FfmpegService : IFfmpegService
                 cancellationToken,
                 shutdownRequested: true)));
 
+        foreach (var transition in transitions)
+        {
+            transition.RequestStop(markAsCompletedOnExit: true);
+        }
+
         await WaitForRuntimeCompletionsAsync(runtimes, gracefulTimeout, cancellationToken);
+        await WaitForTransitionCompletionsAsync(transitions, gracefulTimeout, cancellationToken);
 
         foreach (var runtime in runtimes.Where(static runtime => !runtime.ExitCompletion.Task.IsCompleted))
         {
@@ -391,7 +536,23 @@ public sealed partial class FfmpegService : IFfmpegService
         }
 
         await WaitForAllProcessesAsync(forceKillTimeout, CancellationToken.None);
-        return runtimes.Length;
+        return runtimes.Length + transitions.Length;
+    }
+
+    private static async Task WaitForTransitionCompletionsAsync(
+        IReadOnlyCollection<SessionTransitionRuntime> transitions,
+        TimeSpan timeout,
+        CancellationToken cancellationToken)
+    {
+        if (transitions.Count == 0 || transitions.All(static item => item.Completion.Task.IsCompleted)) return;
+        var completion = Task.WhenAll(transitions.Select(static item => item.Completion.Task));
+        using var timeoutCts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
+        var delay = Task.Delay(timeout, timeoutCts.Token);
+        if (await Task.WhenAny(completion, delay) == completion)
+        {
+            timeoutCts.Cancel();
+            await completion;
+        }
     }
 
     private static async Task WaitForRuntimeCompletionsAsync(
@@ -417,7 +578,7 @@ public sealed partial class FfmpegService : IFfmpegService
     private async Task WaitForAllProcessesAsync(TimeSpan timeout, CancellationToken cancellationToken)
     {
         var deadline = DateTimeOffset.UtcNow + timeout;
-        while ((!_processes.IsEmpty || !_postProcessProcesses.IsEmpty || !_postProcessStates.IsEmpty) &&
+        while ((!_processes.IsEmpty || !_sessionTransitions.IsEmpty || !_postProcessProcesses.IsEmpty || !_postProcessStates.IsEmpty) &&
                DateTimeOffset.UtcNow < deadline)
         {
             await Task.Delay(TimeSpan.FromMilliseconds(200), cancellationToken);
@@ -1020,6 +1181,215 @@ public sealed partial class FfmpegService : IFfmpegService
         return started;
     }
 
+    public async Task<bool> StartArtifactRepairAsync(
+        Guid recordTaskId,
+        CancellationToken cancellationToken = default)
+    {
+        if (_postProcessStates.ContainsKey(recordTaskId))
+        {
+            return false;
+        }
+
+        using var scope = _serviceScopeFactory.CreateScope();
+        var dbContext = scope.ServiceProvider.GetRequiredService<LiveRecorderDbContext>();
+        var settingsService = scope.ServiceProvider.GetRequiredService<ISystemSettingsService>();
+        var recordTask = await dbContext.RecordTasks
+            .Include(static item => item.RecordSession)
+            .Include(static item => item.Result)
+            .FirstOrDefaultAsync(item => item.Id == recordTaskId, cancellationToken);
+        if (recordTask?.Result is null || recordTask.RecordSession is null ||
+            recordTask.Status is not (RecordTaskStatus.Failed or RecordTaskStatus.Processing) ||
+            recordTask.Status == RecordTaskStatus.Processing &&
+            recordTask.ErrorMessage?.StartsWith(ArtifactRepairMarker, StringComparison.Ordinal) != true)
+        {
+            return false;
+        }
+
+        var sourcePath = NormalizeAbsolutePath(recordTask.Result.FilePath);
+        if (!File.Exists(sourcePath) || new FileInfo(sourcePath).Length <= 0)
+        {
+            return false;
+        }
+
+        var settings = await settingsService.GetAsync(cancellationToken);
+        var storage = _storageGuardService.CheckCanStartOrResume(settings);
+        if (!storage.IsAvailable || storage.AvailableBytes < Math.Max(storage.RequiredBytes, new FileInfo(sourcePath).Length))
+        {
+            return false;
+        }
+
+        var targetPath = BuildRecoveredArtifactPath(sourcePath, recordTaskId);
+        var now = DateTimeOffset.UtcNow;
+        if (!_postProcessStates.TryAdd(
+                recordTask.Id,
+                new PostProcessRuntimeEntry(
+                    recordTask.RecordSessionId,
+                    new RecordTaskRuntimeState(
+                        RecordTaskStatus.Processing,
+                        "Queued",
+                        0,
+                        $"Waiting to repair {Path.GetFileName(sourcePath)}"))))
+        {
+            return false;
+        }
+
+        try
+        {
+            recordTask.MarkProcessing(
+                $"{ArtifactRepairMarker} 正在生成非破坏性恢复文件：{Path.GetFileName(targetPath)}",
+                now);
+            await dbContext.SaveChangesAsync(cancellationToken);
+        }
+        catch
+        {
+            ClearPostProcessState(recordTask.Id);
+            throw;
+        }
+
+        _ = Task.Run(
+            async () => await RunArtifactRepairAsync(recordTaskId),
+            CancellationToken.None);
+        return true;
+    }
+
+    public async Task<int> ResumeArtifactRepairsAsync(CancellationToken cancellationToken = default)
+    {
+        using var scope = _serviceScopeFactory.CreateScope();
+        var dbContext = scope.ServiceProvider.GetRequiredService<LiveRecorderDbContext>();
+        var taskIds = await dbContext.RecordTasks
+            .AsNoTracking()
+            .Where(item => item.Status == RecordTaskStatus.Processing &&
+                           item.ErrorMessage != null &&
+                           item.ErrorMessage.StartsWith(ArtifactRepairMarker))
+            .OrderBy(static item => item.UpdatedAt)
+            .Select(static item => item.Id)
+            .Take(20)
+            .ToArrayAsync(cancellationToken);
+
+        var started = 0;
+        foreach (var taskId in taskIds)
+        {
+            if (await StartArtifactRepairAsync(taskId, cancellationToken))
+            {
+                started++;
+            }
+        }
+
+        return started;
+    }
+
+    private async Task RunArtifactRepairAsync(Guid recordTaskId)
+    {
+        try
+        {
+            using var scope = _serviceScopeFactory.CreateScope();
+            var dbContext = scope.ServiceProvider.GetRequiredService<LiveRecorderDbContext>();
+            var settingsService = scope.ServiceProvider.GetRequiredService<ISystemSettingsService>();
+            var logService = scope.ServiceProvider.GetRequiredService<ISystemLogService>();
+            var recordTask = await dbContext.RecordTasks
+                .Include(static item => item.RecordSession)
+                .ThenInclude(static item => item!.RecordTasks)
+                .Include(static item => item.Result)
+                .FirstOrDefaultAsync(item => item.Id == recordTaskId);
+            if (recordTask?.Result is null || recordTask.RecordSession is null)
+            {
+                return;
+            }
+
+            var sourcePath = NormalizeAbsolutePath(recordTask.Result.FilePath);
+            var targetPath = BuildRecoveredArtifactPath(sourcePath, recordTaskId);
+            var originalError = recordTask.ErrorMessage;
+            var settings = await settingsService.GetAsync();
+            SetPostProcessState(
+                recordTask.RecordSessionId,
+                recordTask.Id,
+                "Repairing",
+                null,
+                $"Repairing {Path.GetFileName(sourcePath)} without replacing the source");
+
+            var repair = await TryRepairArtifactFileAsync(
+                settings.FfmpegPath,
+                settings.MaxConcurrentFfmpegTranscodeTasks,
+                settings.Mp4FinalizeTimeoutMinutes,
+                recordTask.Id,
+                sourcePath,
+                targetPath,
+                _shutdownCts.Token);
+            if (_shutdownCts.IsCancellationRequested)
+            {
+                return;
+            }
+
+            var now = DateTimeOffset.UtcNow;
+            var metadata = string.IsNullOrWhiteSpace(repair.ErrorMessage)
+                ? await scope.ServiceProvider.GetRequiredService<IVideoMetadataService>()
+                    .ExtractMetadataAsync(targetPath)
+                : null;
+            if (metadata?.DurationSeconds is > 0 && !string.IsNullOrWhiteSpace(metadata.VideoCodec))
+            {
+                recordTask.MarkCompleted(now, metadata.DurationSeconds);
+                recordTask.Result.Update(
+                    targetPath,
+                    new FileInfo(targetPath).Length,
+                    metadata.DurationSeconds,
+                    recordTask.Result.DanmakuFilePath,
+                    recordTask.Result.DanmakuMessageCount,
+                    RecordTaskStatus.Completed,
+                    null);
+                recordTask.Result.ResetUploadForRecoveredArtifact();
+                if (recordTask.RecordSession.RecordTasks.All(static task =>
+                        task.Status is RecordTaskStatus.Completed or RecordTaskStatus.Stopped))
+                {
+                    recordTask.RecordSession.MarkCompleted(now);
+                }
+
+                await dbContext.SaveChangesAsync();
+                await logService.WriteAsync(
+                    SystemLogLevel.Info,
+                    "Recovery",
+                    "录制失败产物已修复，原文件已保留。",
+                    $"source={sourcePath}; recovered={targetPath}; originalError={originalError}",
+                    recordTask.LiveRoomId,
+                    recordTask.RecordSessionId,
+                    recordTask.Id);
+                SetPostProcessState(recordTask.RecordSessionId, recordTask.Id, "Completed", 100, "Recovered file is ready for manual upload");
+            }
+            else
+            {
+                var error = repair.ErrorMessage ?? "恢复输出仍无法识别有效视频流。";
+                recordTask.MarkFailed($"录制产物修复失败：{error}", now, recordTask.DurationSeconds);
+                await dbContext.SaveChangesAsync();
+                await logService.WriteAsync(
+                    SystemLogLevel.Warning,
+                    "Recovery",
+                    "录制失败产物修复未成功，原文件保持不变。",
+                    $"source={sourcePath}; error={error}",
+                    recordTask.LiveRoomId,
+                    recordTask.RecordSessionId,
+                    recordTask.Id);
+            }
+        }
+        catch (OperationCanceledException) when (_shutdownCts.IsCancellationRequested)
+        {
+            // The persisted Processing marker is intentionally kept for restart recovery.
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "Artifact repair failed for task {RecordTaskId}", recordTaskId);
+        }
+        finally
+        {
+            ClearPostProcessState(recordTaskId);
+        }
+    }
+
+    private static string BuildRecoveredArtifactPath(string sourcePath, Guid recordTaskId)
+    {
+        var directory = Path.GetDirectoryName(sourcePath) ?? AppContext.BaseDirectory;
+        var stem = Path.GetFileNameWithoutExtension(sourcePath);
+        return Path.Combine(directory, $"{stem}.{recordTaskId.ToString("N")[..8]}.recovered.mp4");
+    }
+
     private static bool NeedsInterruptedMp4Finalization(RecordTask recordTask)
     {
         if (recordTask.Status != RecordTaskStatus.Completed ||
@@ -1081,7 +1451,7 @@ public sealed partial class FfmpegService : IFfmpegService
             SystemLogLevel.Info,
             "FFmpeg",
             $"ffmpeg input profile={runtime.InputOptionProfile}.",
-            detail: $"stream={runtime.SelectedProtocol}:{runtime.SelectedQuality}; videoCodec={runtime.SelectedVideoCodec ?? "unknown"}; recoveryEncoder={runtime.RecoveryVideoEncoder.Kind}; recoveryDevice={runtime.RecoveryVideoEncoder.DevicePath ?? "default"}; attempt={runtime.RetryAttemptCount}/{MaxInSessionRetryAttempts}; compatibilityRetry={runtime.HasRetriedWithCompatibilityProfile}; refreshRetry={runtime.HasRetriedWithRefreshedStream}; alternateProtocolRetry={runtime.HasRetriedWithAlternateProtocol}; softwareEncoderRetry={runtime.RecoveryContext.HasRetriedWithSoftwareEncoder}",
+            detail: $"stream={runtime.SelectedProtocol}:{runtime.SelectedQuality}; videoCodec={runtime.SelectedVideoCodec ?? "unknown"}; recoveryEncoder={runtime.RecoveryVideoEncoder.Kind}; recoveryDevice={runtime.RecoveryVideoEncoder.DevicePath ?? "default"}; attempt={runtime.RetryAttemptCount}; compatibilityRetry={runtime.HasRetriedWithCompatibilityProfile}; refreshRetry={runtime.HasRetriedWithRefreshedStream}; alternateProtocolRetry={runtime.HasRetriedWithAlternateProtocol}; softwareEncoderRetry={runtime.RecoveryContext.HasRetriedWithSoftwareEncoder}",
             liveRoomId: runtime.LiveRoomId,
             recordSessionId: runtime.RecordSessionId,
             recordTaskId: runtime.CurrentTaskId,
@@ -1106,6 +1476,24 @@ public sealed partial class FfmpegService : IFfmpegService
         return false;
     }
 
+    private static async Task<bool> WaitForTransitionAsync(
+        SessionTransitionRuntime transition,
+        TimeSpan timeout,
+        CancellationToken cancellationToken)
+    {
+        using var timeoutCts = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
+        var delayTask = Task.Delay(timeout, timeoutCts.Token);
+        var completed = await Task.WhenAny(transition.Completion.Task, delayTask);
+        if (completed != transition.Completion.Task)
+        {
+            return false;
+        }
+
+        timeoutCts.Cancel();
+        await transition.Completion.Task;
+        return true;
+    }
+
     private async Task RequestStopAsync(
         Guid recordSessionId,
         bool markAsCompletedOnExit,
@@ -1114,6 +1502,11 @@ public sealed partial class FfmpegService : IFfmpegService
     {
         if (!_processes.TryGetValue(recordSessionId, out var runtime))
         {
+            if (_sessionTransitions.TryGetValue(recordSessionId, out var transition))
+            {
+                transition.RequestStop(markAsCompletedOnExit || shutdownRequested);
+            }
+
             return;
         }
 

src/LiveRecorder.Infrastructure/Services/LiveRoomPollingBackgroundService.cs

@@ -29,6 +29,7 @@ public sealed class LiveRoomPollingBackgroundService : BackgroundService, ILiveR
     private static readonly TimeSpan PollDispatchSpacing = TimeSpan.FromMilliseconds(400);
     private static readonly TimeSpan MinimumIdleDelay = TimeSpan.FromSeconds(2);
     private static readonly TimeSpan PerRoomPollingTimeout = TimeSpan.FromMinutes(2);
+    private static readonly TimeSpan OfflineConfirmationDelay = TimeSpan.FromSeconds(10);
     private const int MaxConcurrentLiveRoomPolls = 2;
 
     private readonly IServiceScopeFactory _serviceScopeFactory;
@@ -74,6 +75,7 @@ public sealed class LiveRoomPollingBackgroundService : BackgroundService, ILiveR
                 var settingsService = scope.ServiceProvider.GetRequiredService<ISystemSettingsService>();
                 var settings = await settingsService.GetAsync(stoppingToken);
                 var ffmpegService = scope.ServiceProvider.GetRequiredService<IFfmpegService>();
+                await ffmpegService.ResumeRecoveringSessionsAsync(stoppingToken);
                 var recoveredOrphanedSessions = await ffmpegService.RecoverOrphanedTerminalSessionTasksAsync(stoppingToken);
                 if (recoveredOrphanedSessions > 0)
                 {
@@ -88,6 +90,9 @@ public sealed class LiveRoomPollingBackgroundService : BackgroundService, ILiveR
                 // ResumePausedFinalizationsAsync internally no-ops only when space is truly
                 // insufficient to remux, and it is retried every poll cycle.
                 await ffmpegService.ResumePausedFinalizationsAsync(stoppingToken);
+                await ffmpegService.ResumeArtifactRepairsAsync(stoppingToken);
+                var shortFragmentRecovery = scope.ServiceProvider.GetRequiredService<ShortFragmentConsolidationService>();
+                await shortFragmentRecovery.ResumeInterruptedMergesAsync(stoppingToken);
 
                 if (!settings.EnableBackgroundPolling)
                 {
@@ -237,6 +242,8 @@ public sealed class LiveRoomPollingBackgroundService : BackgroundService, ILiveR
     private static int GetEffectivePollingIntervalSeconds(int globalIntervalSeconds, int? overrideIntervalSeconds) =>
         Math.Clamp(overrideIntervalSeconds ?? globalIntervalSeconds, 10, 3600);
 
+    internal static bool RequiresOfflineConfirmation(bool isLive) => !isLive;
+
     private async Task PollLiveRoomsAsync(
         IReadOnlyList<PollCandidate> liveRooms,
         SystemSettingsDto settings,
@@ -359,6 +366,20 @@ public sealed class LiveRoomPollingBackgroundService : BackgroundService, ILiveR
         {
             var adapter = adapterFactory.GetByPlatform(liveRoom.Platform);
             var liveStatus = await adapter.GetLiveStatusAsync(liveRoom.RoomId, cancellationToken);
+            if (RequiresOfflineConfirmation(liveStatus.IsLive))
+            {
+                await Task.Delay(OfflineConfirmationDelay, cancellationToken);
+                var confirmation = await adapter.GetLiveStatusAsync(liveRoom.RoomId, cancellationToken);
+                if (confirmation.IsLive)
+                {
+                    _logger.LogInformation(
+                        "Ignored a transient offline sample for live room {RoomId}; the confirmation check is live.",
+                        liveRoom.RoomId);
+                }
+
+                liveStatus = confirmation;
+            }
+
             var now = DateTimeOffset.UtcNow;
 
             await liveRoomStatusService.ApplySnapshotAsync(liveRoom, liveStatus, now, cancellationToken: cancellationToken);

src/LiveRecorder.Infrastructure/Services/OpenListClient.cs

@@ -10,6 +10,11 @@ namespace LiveRecorder.Infrastructure.Services;
 
 public interface IOpenListClient
 {
+    Task EnsureAuthenticatedAsync(
+        OpenListConnectionRequest connection,
+        bool forceRefresh = false,
+        CancellationToken cancellationToken = default);
+
     Task<OpenListConnectionTestDto> TestConnectionAsync(
         OpenListConnectionRequest connection,
         CancellationToken cancellationToken = default);
@@ -72,16 +77,73 @@ public sealed record OpenListTaskInfo(
     string Status,
     string? Error);
 
+public sealed class OpenListApiException : InvalidOperationException
+{
+    public OpenListApiException(
+        string operation,
+        int apiCode,
+        HttpStatusCode httpStatusCode,
+        string apiMessage,
+        TimeSpan? retryAfter = null)
+        : base($"{operation} failed with code {apiCode}: {apiMessage}")
+    {
+        Operation = operation;
+        ApiCode = apiCode;
+        HttpStatusCode = httpStatusCode;
+        ApiMessage = apiMessage;
+        RetryAfter = retryAfter;
+    }
+
+    public string Operation { get; }
+
+    public int ApiCode { get; }
+
+    public HttpStatusCode HttpStatusCode { get; }
+
+    public string ApiMessage { get; }
+
+    public TimeSpan? RetryAfter { get; }
+
+    public bool IsRateLimited =>
+        HttpStatusCode == HttpStatusCode.TooManyRequests ||
+        ApiCode == 429 ||
+        ApiMessage.Contains("too many", StringComparison.OrdinalIgnoreCase) ||
+        ApiMessage.Contains("尝试过多", StringComparison.OrdinalIgnoreCase) ||
+        ApiMessage.Contains("请求过于频繁", StringComparison.OrdinalIgnoreCase);
+
+    public bool IsAuthenticationFailure =>
+        HttpStatusCode is HttpStatusCode.Unauthorized or HttpStatusCode.Forbidden ||
+        ApiCode is 401 or 403 ||
+        Operation.Contains("login", StringComparison.OrdinalIgnoreCase) &&
+        (
+         ApiMessage.Contains("password", StringComparison.OrdinalIgnoreCase) ||
+         ApiMessage.Contains("credential", StringComparison.OrdinalIgnoreCase) ||
+         ApiMessage.Contains("用户名", StringComparison.OrdinalIgnoreCase) ||
+         ApiMessage.Contains("密码", StringComparison.OrdinalIgnoreCase));
+}
+
 public sealed class OpenListClient : IOpenListClient
 {
     private static readonly JsonSerializerOptions JsonOptions = new(JsonSerializerDefaults.Web);
     private readonly IHttpClientFactory _httpClientFactory;
+    private readonly OpenListUploadHealthState _healthState;
     private readonly ConcurrentDictionary<string, TokenCacheEntry> _tokens = new(StringComparer.Ordinal);
     private readonly SemaphoreSlim _loginGate = new(1, 1);
 
-    public OpenListClient(IHttpClientFactory httpClientFactory)
+    public OpenListClient(
+        IHttpClientFactory httpClientFactory,
+        OpenListUploadHealthState? healthState = null)
     {
         _httpClientFactory = httpClientFactory;
+        _healthState = healthState ?? new OpenListUploadHealthState();
+    }
+
+    public async Task EnsureAuthenticatedAsync(
+        OpenListConnectionRequest connection,
+        bool forceRefresh = false,
+        CancellationToken cancellationToken = default)
+    {
+        _ = await GetTokenAsync(connection, forceRefresh, cancellationToken);
     }
 
     public async Task<OpenListConnectionTestDto> TestConnectionAsync(
@@ -533,6 +595,7 @@ public sealed class OpenListClient : IOpenListClient
         Func<HttpRequestMessage> requestFactory,
         CancellationToken cancellationToken)
     {
+        ApiEnvelope? lastUnauthorized = null;
         for (var attempt = 0; attempt < 2; attempt++)
         {
             var forceRefresh = attempt > 0;
@@ -549,10 +612,24 @@ public sealed class OpenListClient : IOpenListClient
                 return envelope;
             }
 
+            lastUnauthorized = envelope;
             InvalidateToken(connection);
         }
 
-        throw new InvalidOperationException("OpenList 登录状态无效，请检查账号或密码。");
+        var failure = lastUnauthorized ?? new ApiEnvelope(
+            401,
+            "OpenList 登录状态无效，请检查账号或密码。",
+            null,
+            HttpStatusCode.Unauthorized,
+            null);
+        var exception = new OpenListApiException(
+            "OpenList authenticated request",
+            failure.Code,
+            failure.HttpStatusCode,
+            failure.Message,
+            failure.RetryAfter);
+        _healthState.MarkProviderFailure(exception, DateTimeOffset.UtcNow);
+        throw exception;
     }
 
     private async Task<string> GetTokenAsync(
@@ -592,6 +669,7 @@ public sealed class OpenListClient : IOpenListClient
 
             var token = tokenElement.GetString()!;
             _tokens[cacheKey] = new TokenCacheEntry(token, DateTimeOffset.UtcNow.AddMinutes(20));
+            _healthState.MarkHealthy();
             return token;
         }
         finally
@@ -617,10 +695,11 @@ public sealed class OpenListClient : IOpenListClient
 
     private static async Task<ApiEnvelope> ReadEnvelopeAsync(HttpResponseMessage response, CancellationToken cancellationToken)
     {
+        var retryAfter = response.Headers.RetryAfter?.Delta;
         var body = await response.Content.ReadAsStringAsync(cancellationToken);
         if (string.IsNullOrWhiteSpace(body))
         {
-            return new ApiEnvelope((int)response.StatusCode, response.ReasonPhrase ?? "Empty response", null);
+            return new ApiEnvelope((int)response.StatusCode, response.ReasonPhrase ?? "Empty response", null, response.StatusCode, retryAfter);
         }
 
         try
@@ -636,7 +715,16 @@ public sealed class OpenListClient : IOpenListClient
             JsonElement? data = root.TryGetProperty("data", out var dataElement)
                 ? dataElement.Clone()
                 : null;
-            return new ApiEnvelope(code, message, data);
+            return new ApiEnvelope(code, message, data, response.StatusCode, retryAfter);
+        }
+        catch (JsonException) when (!response.IsSuccessStatusCode)
+        {
+            return new ApiEnvelope(
+                (int)response.StatusCode,
+                body,
+                null,
+                response.StatusCode,
+                retryAfter);
         }
         catch (JsonException ex)
         {
@@ -644,12 +732,25 @@ public sealed class OpenListClient : IOpenListClient
         }
     }
 
-    private static void EnsureSuccess(ApiEnvelope envelope, string operation)
+    private void EnsureSuccess(ApiEnvelope envelope, string operation)
     {
-        if (envelope.Code != 200)
+        if (envelope.Code != 200 || (int)envelope.HttpStatusCode >= 400)
         {
-            throw new InvalidOperationException($"{operation} failed with code {envelope.Code}: {envelope.Message}");
+            var exception = new OpenListApiException(
+                operation,
+                envelope.Code,
+                envelope.HttpStatusCode,
+                envelope.Message,
+                envelope.RetryAfter);
+            if (exception.IsRateLimited || exception.IsAuthenticationFailure)
+            {
+                _healthState.MarkProviderFailure(exception, DateTimeOffset.UtcNow);
+            }
+
+            throw exception;
         }
+
+        _healthState.MarkHealthy();
     }
 
     private static bool ContainsAny(string? value, params string[] candidates) =>
@@ -681,5 +782,10 @@ public sealed class OpenListClient : IOpenListClient
 
     private sealed record TokenCacheEntry(string Token, DateTimeOffset ExpiresAt);
 
-    private sealed record ApiEnvelope(int Code, string Message, JsonElement? Data);
+    private sealed record ApiEnvelope(
+        int Code,
+        string Message,
+        JsonElement? Data,
+        HttpStatusCode HttpStatusCode,
+        TimeSpan? RetryAfter);
 }

src/LiveRecorder.Infrastructure/Services/OpenListUploadHealthState.cs

@@ -0,0 +1,126 @@
+namespace LiveRecorder.Infrastructure.Services;
+
+public enum OpenListQueueHealthStatus
+{
+    Healthy,
+    RateLimited,
+    AuthenticationBlocked,
+    Disabled
+}
+
+public sealed record OpenListQueueHealthSnapshot(
+    OpenListQueueHealthStatus Status,
+    string? Reason,
+    DateTimeOffset? RetryAt,
+    DateTimeOffset? LastErrorAt)
+{
+    public bool IsPaused => Status != OpenListQueueHealthStatus.Healthy;
+}
+
+/// <summary>
+/// Process-wide OpenList availability guard. Upload jobs are persisted in the database,
+/// while provider-wide authentication/rate-limit failures are deliberately kept out of
+/// individual retry budgets.
+/// </summary>
+public sealed class OpenListUploadHealthState
+{
+    private static readonly TimeSpan DefaultRateLimitDelay = TimeSpan.FromMinutes(15);
+    private static readonly TimeSpan MaximumRateLimitDelay = TimeSpan.FromHours(1);
+    private readonly object _gate = new();
+    private OpenListQueueHealthStatus _status = OpenListQueueHealthStatus.Healthy;
+    private string? _reason;
+    private DateTimeOffset? _retryAt;
+    private DateTimeOffset? _lastErrorAt;
+    private int _consecutiveRateLimits;
+
+    public OpenListQueueHealthSnapshot GetSnapshot()
+    {
+        lock (_gate)
+        {
+            return new OpenListQueueHealthSnapshot(_status, _reason, _retryAt, _lastErrorAt);
+        }
+    }
+
+    public bool CanProcess(DateTimeOffset now)
+    {
+        lock (_gate)
+        {
+            return _status switch
+            {
+                OpenListQueueHealthStatus.Healthy => true,
+                OpenListQueueHealthStatus.RateLimited => _retryAt.HasValue && _retryAt <= now,
+                _ => false
+            };
+        }
+    }
+
+    public void MarkHealthy()
+    {
+        lock (_gate)
+        {
+            _status = OpenListQueueHealthStatus.Healthy;
+            _reason = null;
+            _retryAt = null;
+            _lastErrorAt = null;
+            _consecutiveRateLimits = 0;
+        }
+    }
+
+    public void MarkEnabled()
+    {
+        lock (_gate)
+        {
+            if (_status == OpenListQueueHealthStatus.Disabled)
+            {
+                _status = OpenListQueueHealthStatus.Healthy;
+                _reason = null;
+                _retryAt = null;
+            }
+        }
+    }
+
+    public void MarkDisabled(string reason)
+    {
+        lock (_gate)
+        {
+            _status = OpenListQueueHealthStatus.Disabled;
+            _reason = reason;
+            _retryAt = null;
+        }
+    }
+
+    public void MarkProviderFailure(OpenListApiException exception, DateTimeOffset now)
+    {
+        lock (_gate)
+        {
+            _lastErrorAt = now;
+            _reason = exception.Message;
+            if (exception.IsRateLimited)
+            {
+                _consecutiveRateLimits++;
+                var multiplier = Math.Pow(2, Math.Clamp(_consecutiveRateLimits - 1, 0, 2));
+                var calculated = TimeSpan.FromTicks((long)(DefaultRateLimitDelay.Ticks * multiplier));
+                var delay = exception.RetryAfter.GetValueOrDefault(calculated);
+                if (delay <= TimeSpan.Zero)
+                {
+                    delay = DefaultRateLimitDelay;
+                }
+
+                if (delay > MaximumRateLimitDelay)
+                {
+                    delay = MaximumRateLimitDelay;
+                }
+
+                _status = OpenListQueueHealthStatus.RateLimited;
+                _retryAt = now.Add(delay);
+                return;
+            }
+
+            if (exception.IsAuthenticationFailure)
+            {
+                _status = OpenListQueueHealthStatus.AuthenticationBlocked;
+                _retryAt = null;
+            }
+        }
+    }
+}

src/LiveRecorder.Infrastructure/Services/OpenListUploadQueueService.cs

@@ -34,6 +34,7 @@ public sealed class OpenListUploadQueueService
     private readonly LiveRecorderDbContext _dbContext;
     private readonly ISystemSettingsService _settingsService;
     private readonly IOpenListClient _openListClient;
+    private readonly OpenListUploadHealthState _healthState;
     private readonly ISystemLogService _systemLogService;
     private readonly IVideoMetadataService _videoMetadataService;
 
@@ -41,16 +42,43 @@ public sealed class OpenListUploadQueueService
         LiveRecorderDbContext dbContext,
         ISystemSettingsService settingsService,
         IOpenListClient openListClient,
+        OpenListUploadHealthState healthState,
         ISystemLogService systemLogService,
         IVideoMetadataService videoMetadataService)
     {
         _dbContext = dbContext;
         _settingsService = settingsService;
         _openListClient = openListClient;
+        _healthState = healthState;
         _systemLogService = systemLogService;
         _videoMetadataService = videoMetadataService;
     }
 
+    public OpenListQueueHealthSnapshot GetHealthSnapshot() => _healthState.GetSnapshot();
+
+    public async Task<OpenListQueueHealthSnapshot> ResumeProviderAsync(
+        CancellationToken cancellationToken = default)
+    {
+        var settings = await _settingsService.GetAsync(cancellationToken);
+        if (!settings.EnableFileUpload || settings.UploadTarget != UploadTargetType.OpenList)
+        {
+            _healthState.MarkDisabled("OpenList 上传未启用。");
+            return _healthState.GetSnapshot();
+        }
+
+        ValidateSettings(settings.OpenListUpload);
+        _healthState.MarkEnabled();
+        var connection = new OpenListConnectionRequest
+        {
+            BaseUrl = settings.OpenListUpload.BaseUrl,
+            Username = settings.OpenListUpload.Username,
+            Password = settings.OpenListUpload.Password
+        };
+        await _openListClient.EnsureAuthenticatedAsync(connection, forceRefresh: true, cancellationToken);
+        _healthState.MarkHealthy();
+        return _healthState.GetSnapshot();
+    }
+
     public async Task<RecordArtifactUploadItemResultDto?> TryEnqueueAutomaticAsync(
         Guid recordTaskId,
         CancellationToken cancellationToken = default)
@@ -83,6 +111,7 @@ public sealed class OpenListUploadQueueService
             .AsNoTracking()
             .Where(item =>
                 (item.Status == RecordTaskStatus.Completed || item.Status == RecordTaskStatus.Stopped) &&
+                !item.IsHiddenArtifactSource &&
                 item.Result != null &&
                 item.Result.UploadStatus == RecordArtifactUploadStatus.NotUploaded &&
                 item.UploadJob == null &&
@@ -148,7 +177,7 @@ public sealed class OpenListUploadQueueService
     {
         var taskIds = await _dbContext.RecordTasks
             .AsNoTracking()
-            .Where(item => item.RecordSessionId == recordSessionId)
+            .Where(item => item.RecordSessionId == recordSessionId && !item.IsHiddenArtifactSource)
             .OrderBy(static item => item.SegmentIndex)
             .ThenBy(static item => item.CreatedAt)
             .Select(static item => item.Id)
@@ -180,9 +209,113 @@ public sealed class OpenListUploadQueueService
         };
     }
 
+    public async Task<RecordArtifactUploadItemResultDto> RetryAsync(
+        Guid recordTaskId,
+        CancellationToken cancellationToken = default)
+    {
+        var settings = await _settingsService.GetAsync(cancellationToken);
+        if (!settings.EnableFileUpload || settings.UploadTarget != UploadTargetType.OpenList)
+        {
+            return Failure(recordTaskId, "OpenList 上传未启用。", "openlist");
+        }
+
+        var recordTask = await _dbContext.RecordTasks
+            .Include(static item => item.Result)
+            .Include(static item => item.UploadJob)
+            .FirstOrDefaultAsync(item => item.Id == recordTaskId, cancellationToken);
+        if (recordTask?.Result is null || recordTask.UploadJob is null || recordTask.IsHiddenArtifactSource)
+        {
+            return Failure(recordTaskId, "该任务没有可重试的上传作业。", "openlist");
+        }
+
+        if (recordTask.UploadJob.Status == RecordArtifactUploadStatus.Failed)
+        {
+            return await EnqueueInternalAsync(recordTaskId, settings, cancellationToken);
+        }
+
+        if (recordTask.UploadJob.Status != RecordArtifactUploadStatus.WaitingRetry)
+        {
+            return Failure(recordTaskId, "只有上传失败或等待重试的任务可以立即重试。", "openlist");
+        }
+
+        var now = DateTimeOffset.UtcNow;
+        recordTask.UploadJob.RequestImmediateRetry(now);
+        recordTask.Result.MarkUploadQueued("openlist", now);
+        await _dbContext.SaveChangesAsync(cancellationToken);
+        return QueuedResult(recordTaskId, recordTask.Result, recordTask.UploadJob, "已重置重试次数并立即加入队列。");
+    }
+
+    public async Task<RecordArtifactUploadBatchResultDto> RetryMatchingAsync(
+        RecordArtifactUploadStatus? uploadStatus,
+        string? query,
+        CancellationToken cancellationToken = default)
+    {
+        if (uploadStatus.HasValue && uploadStatus is not (RecordArtifactUploadStatus.Failed or RecordArtifactUploadStatus.WaitingRetry))
+        {
+            return new RecordArtifactUploadBatchResultDto
+            {
+                RequestedCount = 0,
+                SuccessCount = 0,
+                FailedCount = 1,
+                Items = [Failure(Guid.Empty, "批量重试仅支持上传失败和等待重试状态。", "openlist")]
+            };
+        }
+
+        var statuses = uploadStatus.HasValue
+            ? new[] { uploadStatus.Value }
+            : new[] { RecordArtifactUploadStatus.Failed, RecordArtifactUploadStatus.WaitingRetry };
+        var normalizedQuery = query?.Trim().ToLowerInvariant();
+        var taskQuery = _dbContext.RecordResults
+            .AsNoTracking()
+            .Where(item => statuses.Contains(item.UploadStatus) && item.RecordTask != null);
+        if (!string.IsNullOrWhiteSpace(normalizedQuery))
+        {
+            var parsedTaskId = Guid.TryParse(normalizedQuery, out var taskId) ? taskId : (Guid?)null;
+            taskQuery = taskQuery.Where(item =>
+                parsedTaskId.HasValue && item.RecordTaskId == parsedTaskId.Value ||
+                item.FilePath.ToLower().Contains(normalizedQuery) ||
+                item.RemoteVideoPath != null && item.RemoteVideoPath.ToLower().Contains(normalizedQuery) ||
+                item.UploadErrorMessage != null && item.UploadErrorMessage.ToLower().Contains(normalizedQuery) ||
+                item.RecordTask!.LiveRoom != null &&
+                ((item.RecordTask.LiveRoom.Title != null && item.RecordTask.LiveRoom.Title.ToLower().Contains(normalizedQuery)) ||
+                 item.RecordTask.LiveRoom.RoomId.ToLower().Contains(normalizedQuery)));
+        }
+
+        var taskIds = await taskQuery
+            .OrderBy(static item => item.CreatedAt)
+            .Select(static item => item.RecordTaskId)
+            .ToArrayAsync(cancellationToken);
+        var items = new List<RecordArtifactUploadItemResultDto>(taskIds.Length);
+        foreach (var taskId in taskIds)
+        {
+            items.Add(await RetryAsync(taskId, cancellationToken));
+        }
+
+        return new RecordArtifactUploadBatchResultDto
+        {
+            RequestedCount = taskIds.Length,
+            SuccessCount = items.Count(static item => item.Success),
+            FailedCount = items.Count(static item => !item.Success),
+            Items = items
+        };
+    }
+
     public async Task<bool> ProcessNextAsync(CancellationToken cancellationToken = default)
     {
         var now = DateTimeOffset.UtcNow;
+        var settings = await _settingsService.GetAsync(cancellationToken);
+        if (!settings.EnableFileUpload || settings.UploadTarget != UploadTargetType.OpenList)
+        {
+            _healthState.MarkDisabled("OpenList 上传已在设置中关闭。");
+            return false;
+        }
+
+        _healthState.MarkEnabled();
+        if (!_healthState.CanProcess(now))
+        {
+            return false;
+        }
+
         var jobs = _dbContext.RecordUploadJobs
             .Include(static item => item.RecordTask)
             .ThenInclude(static item => item!.Result)
@@ -215,6 +348,38 @@ public sealed class OpenListUploadQueueService
         }
 
         var result = job.RecordTask.Result;
+        var connection = new OpenListConnectionRequest
+        {
+            BaseUrl = job.ProviderEndpoint,
+            Username = settings.OpenListUpload.Username,
+            Password = settings.OpenListUpload.Password
+        };
+        try
+        {
+            await _openListClient.EnsureAuthenticatedAsync(connection, cancellationToken: cancellationToken);
+        }
+        catch (OpenListApiException ex) when (ex.IsRateLimited || ex.IsAuthenticationFailure)
+        {
+            await _systemLogService.WriteAsync(
+                SystemLogLevel.Warning,
+                "Upload",
+                "OpenList 上传队列已暂停，任务重试次数未消耗。",
+                ex.Message,
+                cancellationToken: cancellationToken);
+            return true;
+        }
+        catch (Exception ex)
+        {
+            if (job.Status != RecordArtifactUploadStatus.Uploading)
+            {
+                job.BeginAttempt(now);
+                result.MarkUploadStarted("openlist", now);
+            }
+
+            await ScheduleRetryOrFailAsync(job, result, ex.Message, clearExternalTask: false, cancellationToken);
+            return true;
+        }
+
         var validationError = await GetUploadValidationErrorAsync(
             job.RecordTask,
             NormalizeAbsolutePath(result.FilePath),
@@ -225,7 +390,8 @@ public sealed class OpenListUploadQueueService
             return true;
         }
 
-        if (job.Status != RecordArtifactUploadStatus.Uploading)
+        var attemptStartedThisRun = job.Status != RecordArtifactUploadStatus.Uploading;
+        if (attemptStartedThisRun)
         {
             job.BeginAttempt(now);
             result.MarkUploadStarted("openlist", now);
@@ -234,13 +400,6 @@ public sealed class OpenListUploadQueueService
 
         try
         {
-            var settings = await _settingsService.GetAsync(cancellationToken);
-            var connection = new OpenListConnectionRequest
-            {
-                BaseUrl = job.ProviderEndpoint,
-                Username = settings.OpenListUpload.Username,
-                Password = settings.OpenListUpload.Password
-            };
             await ProcessJobStepAsync(job, result, connection, cancellationToken);
         }
         catch (OpenListUploadConflictException ex)
@@ -251,6 +410,19 @@ public sealed class OpenListUploadQueueService
         {
             throw;
         }
+        catch (OpenListApiException ex) when (ex.IsRateLimited || ex.IsAuthenticationFailure)
+        {
+            var pausedAt = DateTimeOffset.UtcNow;
+            job.SuspendForProviderFailure(ex.Message, pausedAt, attemptStartedThisRun);
+            result.MarkUploadWaitingRetry("openlist", ex.Message, pausedAt);
+            await _dbContext.SaveChangesAsync(cancellationToken);
+            await _systemLogService.WriteAsync(
+                SystemLogLevel.Warning,
+                "Upload",
+                "OpenList 上传队列已暂停，当前任务重试次数已回退。",
+                ex.Message,
+                cancellationToken: cancellationToken);
+        }
         catch (Exception ex)
         {
             await ScheduleRetryOrFailAsync(job, result, ex.Message, clearExternalTask: false, cancellationToken);
@@ -274,6 +446,11 @@ public sealed class OpenListUploadQueueService
             return Failure(recordTaskId, "录制结果尚未生成，不能上传。", "openlist");
         }
 
+        if (recordTask.IsHiddenArtifactSource)
+        {
+            return Failure(recordTaskId, "该源分片已被短片合并流程收纳，不能单独上传。", "openlist");
+        }
+
         var result = recordTask.Result;
         var localVideoPath = NormalizeAbsolutePath(result.FilePath);
         if (string.IsNullOrWhiteSpace(localVideoPath) || !File.Exists(localVideoPath))

src/LiveRecorder.Infrastructure/Services/RecordUploadService.cs

@@ -63,6 +63,38 @@ public sealed class RecordUploadService
         return await UploadTaskInternalAsync(recordTaskId, settings, automatic: false, cancellationToken);
     }
 
+    public async Task<RecordArtifactUploadItemResultDto> RetryTaskAsync(
+        Guid recordTaskId,
+        CancellationToken cancellationToken = default)
+    {
+        var settings = await _systemSettingsService.GetAsync(cancellationToken);
+        if (settings.UploadTarget != UploadTargetType.OpenList)
+        {
+            return CreateFailureResult(recordTaskId, "当前上传目标不支持队列重试。");
+        }
+
+        return await _openListUploadQueue.RetryAsync(recordTaskId, cancellationToken);
+    }
+
+    public async Task<RecordArtifactUploadBatchResultDto> RetryMatchingAsync(
+        RetryRecordArtifactUploadsRequest request,
+        CancellationToken cancellationToken = default)
+    {
+        var settings = await _systemSettingsService.GetAsync(cancellationToken);
+        if (settings.UploadTarget != UploadTargetType.OpenList)
+        {
+            return new RecordArtifactUploadBatchResultDto
+            {
+                RequestedCount = 0,
+                SuccessCount = 0,
+                FailedCount = 1,
+                Items = [CreateFailureResult(Guid.Empty, "当前上传目标不支持队列重试。")]
+            };
+        }
+
+        return await _openListUploadQueue.RetryMatchingAsync(request.UploadStatus, request.Query, cancellationToken);
+    }
+
     public async Task<RecordArtifactUploadBatchResultDto> UploadSessionAsync(
         Guid recordSessionId,
         CancellationToken cancellationToken = default)
@@ -98,6 +130,7 @@ public sealed class RecordUploadService
         }
 
         var taskIds = session.RecordTasks
+            .Where(static item => !item.IsHiddenArtifactSource)
             .OrderBy(static item => item.SegmentIndex)
             .ThenBy(static item => item.CreatedAt)
             .Select(static item => item.Id)
@@ -135,6 +168,11 @@ public sealed class RecordUploadService
             return CreateFailureResult(recordTaskId, "Recording result is not ready for upload.");
         }
 
+        if (recordTask.IsHiddenArtifactSource)
+        {
+            return CreateFailureResult(recordTaskId, "该分片已并入相邻录像或转存恢复目录，不能单独上传。");
+        }
+
         if (!settings.EnableFileUpload || settings.UploadTarget == UploadTargetType.None)
         {
             return CreateFailureResult(recordTaskId, "File upload is disabled or no upload target is configured.");

src/LiveRecorder.Infrastructure/Services/RecoveryService.cs

@@ -1,4 +1,5 @@
 using LiveRecorder.Application.Abstractions.Recording;
+using LiveRecorder.Application.Abstractions.Logging;
 using LiveRecorder.Application.Abstractions.Settings;
 using LiveRecorder.Application.Abstractions.Storage;
 using LiveRecorder.Application.Common;
@@ -19,19 +20,25 @@ public sealed class RecoveryService
     private readonly IStorageGuardService _storageGuardService;
     private readonly IFfmpegService _ffmpegService;
     private readonly RecordService _recordService;
+    private readonly IVideoMetadataService _videoMetadataService;
+    private readonly ISystemLogService _systemLogService;
 
     public RecoveryService(
         LiveRecorderDbContext dbContext,
         ISystemSettingsService systemSettingsService,
         IStorageGuardService storageGuardService,
         IFfmpegService ffmpegService,
-        RecordService recordService)
+        RecordService recordService,
+        IVideoMetadataService videoMetadataService,
+        ISystemLogService systemLogService)
     {
         _dbContext = dbContext;
         _systemSettingsService = systemSettingsService;
         _storageGuardService = storageGuardService;
         _ffmpegService = ffmpegService;
         _recordService = recordService;
+        _videoMetadataService = videoMetadataService;
+        _systemLogService = systemLogService;
     }
 
     public async Task<RecoveryOverviewDto> GetOverviewAsync(CancellationToken cancellationToken = default)
@@ -40,6 +47,7 @@ public sealed class RecoveryService
         var storage = _storageGuardService.CheckCanStartOrResume(settings);
         var liveRooms = await ListRecoverableLiveRoomsAsync(cancellationToken);
         var finalizations = await ListRecoverableFinalizationsAsync(cancellationToken);
+        var mergedArtifacts = await ListMergedArtifactsAsync(cancellationToken);
 
         return new RecoveryOverviewDto
         {
@@ -61,10 +69,69 @@ public sealed class RecoveryService
                 RedThresholdPercent = storage.RedThresholdPercent
             },
             LiveRooms = liveRooms,
-            Finalizations = finalizations
+            Finalizations = finalizations,
+            MergedArtifacts = mergedArtifacts
         };
     }
 
+    private async Task<IReadOnlyList<MergedArtifactRecordDto>> ListMergedArtifactsAsync(CancellationToken cancellationToken)
+    {
+        var sources = await _dbContext.RecordTasks
+            .AsNoTracking()
+            .Include(item => item.Result)
+            .Where(item => item.IsHiddenArtifactSource)
+            .OrderByDescending(item => item.UpdatedAt)
+            .Take(100)
+            .ToListAsync(cancellationToken);
+        var targetIds = sources.Where(item => item.MergedIntoRecordTaskId.HasValue)
+            .Select(item => item.MergedIntoRecordTaskId!.Value)
+            .Distinct()
+            .ToArray();
+        var targets = await _dbContext.RecordTasks
+            .AsNoTracking()
+            .Include(item => item.Result)
+            .Where(item => targetIds.Contains(item.Id))
+            .ToDictionaryAsync(item => item.Id, cancellationToken);
+
+        return sources.Select(source =>
+        {
+            var sourcePath = source.Result?.FilePath ?? source.OutputFilePath;
+            var parent = string.IsNullOrWhiteSpace(sourcePath) ? null : Path.GetDirectoryName(Path.GetFullPath(sourcePath));
+            var recoveryBase = parent is null ? null : Path.Combine(parent, ".liverecorder-recovery", source.RecordSessionId.ToString("N"));
+            var manifest = FindRecoveryManifest(recoveryBase, source.Id);
+            return new MergedArtifactRecordDto
+            {
+                SourceRecordTaskId = source.Id,
+                RecordSessionId = source.RecordSessionId,
+                MergedIntoRecordTaskId = source.MergedIntoRecordTaskId,
+                SourceVideoPath = sourcePath,
+                MergedVideoPath = source.MergedIntoRecordTaskId.HasValue && targets.TryGetValue(source.MergedIntoRecordTaskId.Value, out var target)
+                    ? target.Result?.FilePath
+                    : null,
+                RecoveryDirectory = manifest is null ? recoveryBase : Path.GetDirectoryName(manifest),
+                ManifestPath = manifest,
+                SourceDurationSeconds = source.Result?.DurationSeconds ?? source.DurationSeconds,
+                CreatedAt = source.UpdatedAt
+            };
+        }).ToList();
+    }
+
+    private static string? FindRecoveryManifest(string? recoveryBase, Guid recordTaskId)
+    {
+        if (string.IsNullOrWhiteSpace(recoveryBase) || !Directory.Exists(recoveryBase)) return null;
+        try
+        {
+            foreach (var path in Directory.EnumerateFiles(recoveryBase, "manifest.json", SearchOption.AllDirectories).Take(100))
+            {
+                if (File.ReadAllText(path).Contains(recordTaskId.ToString(), StringComparison.OrdinalIgnoreCase)) return path;
+            }
+        }
+        catch (Exception ex) when (ex is IOException or UnauthorizedAccessException)
+        {
+        }
+        return null;
+    }
+
     public async Task<RecoveryActionResultDto> RetryLiveRoomAsync(Guid liveRoomId, CancellationToken cancellationToken = default)
     {
         var room = await _dbContext.LiveRooms.FirstOrDefaultAsync(item => item.Id == liveRoomId, cancellationToken);
@@ -225,6 +292,211 @@ public sealed class RecoveryService
         };
     }
 
+    public async Task<RecordingFailureListResponse> ListRecordingFailuresAsync(
+        string? failureKind,
+        int skip,
+        int take,
+        CancellationToken cancellationToken = default)
+    {
+        var tasks = await _dbContext.RecordTasks
+            .AsNoTracking()
+            .Include(static item => item.LiveRoom)
+            .Include(static item => item.Result)
+            .Where(item => item.Status == RecordTaskStatus.Failed ||
+                           item.Status == RecordTaskStatus.Processing &&
+                           item.ErrorMessage != null &&
+                           item.ErrorMessage.StartsWith("[artifact-repair]"))
+            .OrderByDescending(static item => item.UpdatedAt)
+            .ToListAsync(cancellationToken);
+
+        var items = tasks.Select(MapRecordingFailure).AsEnumerable();
+        if (!string.IsNullOrWhiteSpace(failureKind))
+        {
+            items = items.Where(item => item.FailureKind.Equals(failureKind.Trim(), StringComparison.OrdinalIgnoreCase));
+        }
+
+        var materialized = items.ToList();
+        return new RecordingFailureListResponse
+        {
+            TotalCount = materialized.Count,
+            Items = materialized
+                .Skip(Math.Max(0, skip))
+                .Take(Math.Clamp(take, 1, 100))
+                .ToList()
+        };
+    }
+
+    public async Task<RecoveryActionResultDto> AcceptRecordingArtifactAsync(
+        Guid recordTaskId,
+        bool confirmShortArtifact,
+        CancellationToken cancellationToken = default)
+    {
+        var task = await _dbContext.RecordTasks
+            .Include(static item => item.RecordSession)
+            .ThenInclude(static item => item!.RecordTasks)
+            .Include(static item => item.Result)
+            .FirstOrDefaultAsync(item => item.Id == recordTaskId, cancellationToken);
+        if (task?.Result is null || task.Status != RecordTaskStatus.Failed)
+        {
+            return FailureResult("该任务不是可认领的录制失败产物。");
+        }
+
+        var path = NormalizeAbsolutePath(task.Result.FilePath);
+        if (!File.Exists(path) || new FileInfo(path).Length <= 0)
+        {
+            return FailureResult("本地媒体文件不存在或为空，无法认领。");
+        }
+
+        var metadata = await _videoMetadataService.ExtractMetadataAsync(path, cancellationToken);
+        if (metadata is null || string.IsNullOrWhiteSpace(metadata.VideoCodec) || metadata.DurationSeconds is not > 0)
+        {
+            return FailureResult("媒体仍无法读取，请先使用非破坏修复。");
+        }
+
+        if (metadata.DurationSeconds < 5 && !confirmShortArtifact)
+        {
+            return FailureResult($"媒体只有 {metadata.DurationSeconds:0.###} 秒，需要确认短分片后才能认领。");
+        }
+
+        var originalError = task.ErrorMessage;
+        var now = DateTimeOffset.UtcNow;
+        task.MarkCompleted(task.EndedAt ?? now, metadata.DurationSeconds);
+        task.Result.Update(
+            path,
+            new FileInfo(path).Length,
+            metadata.DurationSeconds,
+            task.Result.DanmakuFilePath,
+            task.Result.DanmakuMessageCount,
+            RecordTaskStatus.Completed,
+            null);
+        task.Result.ResetUploadForRecoveredArtifact();
+        if (task.RecordSession is not null && task.RecordSession.RecordTasks.All(static item =>
+                item.Status is RecordTaskStatus.Completed or RecordTaskStatus.Stopped))
+        {
+            task.RecordSession.MarkCompleted(now);
+        }
+
+        await _dbContext.SaveChangesAsync(cancellationToken);
+        await _systemLogService.WriteAsync(
+            SystemLogLevel.Info,
+            "Recovery",
+            "录制失败产物已由管理员确认有效，等待手动上传。",
+            $"path={path}; duration={metadata.DurationSeconds:0.###}; originalError={originalError}",
+            task.LiveRoomId,
+            task.RecordSessionId,
+            task.Id,
+            cancellationToken);
+        return new RecoveryActionResultDto
+        {
+            RequestedCount = 1,
+            SuccessCount = 1,
+            FailedCount = 0,
+            Messages = ["分片已认领为有效产物，可前往上传任务页面手动上传。"]
+        };
+    }
+
+    public async Task<RecoveryActionResultDto> RepairRecordingArtifactAsync(
+        Guid recordTaskId,
+        CancellationToken cancellationToken = default)
+    {
+        var started = await _ffmpegService.StartArtifactRepairAsync(recordTaskId, cancellationToken);
+        return new RecoveryActionResultDto
+        {
+            RequestedCount = 1,
+            SuccessCount = started ? 1 : 0,
+            FailedCount = started ? 0 : 1,
+            Messages =
+            [
+                started
+                    ? "非破坏修复已排队；原文件不会被覆盖或删除。"
+                    : "无法启动修复：任务可能正在处理、文件缺失或可用空间不足。"
+            ]
+        };
+    }
+
+    private static RecordingFailureItemDto MapRecordingFailure(RecordTask task)
+    {
+        var result = task.Result;
+        var path = result?.FilePath;
+        var normalizedPath = string.IsNullOrWhiteSpace(path) ? null : NormalizeAbsolutePath(path);
+        var fileExists = normalizedPath is not null && File.Exists(normalizedPath) && new FileInfo(normalizedPath).Length > 0;
+        var classification = ClassifyRecordingFailure(task, fileExists);
+        var isRepairing = task.Status == RecordTaskStatus.Processing &&
+                          task.ErrorMessage?.StartsWith("[artifact-repair]", StringComparison.Ordinal) == true;
+        return new RecordingFailureItemDto
+        {
+            RecordTaskId = task.Id,
+            RecordSessionId = task.RecordSessionId,
+            LiveRoomId = task.LiveRoomId,
+            LiveRoomTitle = task.LiveRoom?.Title ?? task.LiveRoom?.AnchorName ?? task.LiveRoom?.RoomId ?? "未知直播间",
+            RoomId = task.LiveRoom?.RoomId ?? "-",
+            PlatformName = task.LiveRoom?.Platform.ToString() ?? "Unknown",
+            SegmentIndex = task.SegmentIndex,
+            FailureKind = classification.Kind,
+            FailureLabel = classification.Label,
+            RecommendedAction = classification.Action,
+            ErrorMessage = task.ErrorMessage ?? result?.ErrorMessage,
+            FilePath = normalizedPath,
+            FileSizeBytes = result?.FileSizeBytes,
+            DurationSeconds = result?.DurationSeconds ?? task.DurationSeconds,
+            FileExists = fileExists,
+            CanAccept = !isRepairing && fileExists && classification.Kind is "ReadableFragment" or "TooShort" or "Unknown",
+            CanRepair = !isRepairing && fileExists && classification.Kind is "UnreadableMedia" or "FinalizationFailed" or "Unknown",
+            CanRetryRoom = !isRepairing && task.LiveRoom?.AvailabilityStatus == LiveRoomAvailabilityStatus.Live,
+            IsRepairing = isRepairing,
+            CreatedAt = task.CreatedAt
+        };
+    }
+
+    private static (string Kind, string Label, string Action) ClassifyRecordingFailure(RecordTask task, bool fileExists)
+    {
+        var error = task.ErrorMessage ?? task.Result?.ErrorMessage ?? string.Empty;
+        if (task.Status == RecordTaskStatus.Processing && error.StartsWith("[artifact-repair]", StringComparison.Ordinal))
+        {
+            return ("Repairing", "正在修复", "等待修复完成，应用重启后会自动续排。");
+        }
+
+        if (!fileExists)
+        {
+            return ("MissingMedia", "文件缺失", "历史媒体文件不存在，无法恢复；若直播仍在线可重新开录。");
+        }
+
+        if (error.Contains("offline", StringComparison.OrdinalIgnoreCase) || error.Contains("已离线", StringComparison.OrdinalIgnoreCase))
+        {
+            return ("SourceOffline", "直播已离线", "历史时段无法补录；直播重新在线后可重新开录。");
+        }
+
+        if (error.Contains("播放地址", StringComparison.OrdinalIgnoreCase) || error.Contains("stream url", StringComparison.OrdinalIgnoreCase))
+        {
+            return ("StreamUrlUnavailable", "未取得播放地址", "等待下一次巡检刷新播放地址，在线时可手动重试开录。");
+        }
+
+        if (error.Contains("short fragment", StringComparison.OrdinalIgnoreCase) ||
+            task.Result?.DurationSeconds is > 0 and < 5)
+        {
+            return ("TooShort", "短分片", "确认内容有价值后可人工认领；不足 5 秒需要二次确认。");
+        }
+
+        if (error.Contains("ffprobe", StringComparison.OrdinalIgnoreCase) ||
+            error.Contains("does not contain a video", StringComparison.OrdinalIgnoreCase))
+        {
+            return ("UnreadableMedia", "媒体不可读", "尝试生成新的恢复文件；原文件保持不变。");
+        }
+
+        if (error.Contains("finaliz", StringComparison.OrdinalIgnoreCase) ||
+            error.Contains("mux", StringComparison.OrdinalIgnoreCase))
+        {
+            return ("FinalizationFailed", "封装或收尾失败", "先重新封装，失败后再转码修复。");
+        }
+
+        if (task.Result?.DurationSeconds is > 0)
+        {
+            return ("ReadableFragment", "异常退出分片", "重新校验媒体；确认有效后转为待上传。");
+        }
+
+        return ("Unknown", "待检测", "可先尝试校验认领；无法读取时再执行非破坏修复。");
+    }
+
     private async Task<IReadOnlyList<RecoverableLiveRoomDto>> ListRecoverableLiveRoomsAsync(CancellationToken cancellationToken)
     {
         var activeLiveRoomIds = await _dbContext.RecordSessions

src/LiveRecorder.Infrastructure/Services/ShortFragmentConsolidationService.cs

@@ -0,0 +1,422 @@
+using System.Diagnostics;
+using System.Globalization;
+using System.Text.Json;
+using System.Xml.Linq;
+using LiveRecorder.Application.Abstractions.Recording;
+using LiveRecorder.Application.Abstractions.Settings;
+using LiveRecorder.Domain.Entities;
+using LiveRecorder.Domain.Enums;
+using LiveRecorder.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+
+namespace LiveRecorder.Infrastructure.Services;
+
+public sealed class ShortFragmentConsolidationService
+{
+    internal const double MinimumStandaloneDurationSeconds = 5;
+    private static readonly TimeSpan ProcessTimeout = TimeSpan.FromMinutes(20);
+    private readonly LiveRecorderDbContext _dbContext;
+    private readonly ISystemSettingsService _settingsService;
+    private readonly IVideoMetadataService _metadataService;
+    private readonly ILogger<ShortFragmentConsolidationService> _logger;
+
+    public ShortFragmentConsolidationService(
+        LiveRecorderDbContext dbContext,
+        ISystemSettingsService settingsService,
+        IVideoMetadataService metadataService,
+        ILogger<ShortFragmentConsolidationService> logger)
+    {
+        _dbContext = dbContext;
+        _settingsService = settingsService;
+        _metadataService = metadataService;
+        _logger = logger;
+    }
+
+    public async Task<FragmentDispatchDecision> PrepareDispatchAsync(Guid recordTaskId, CancellationToken cancellationToken)
+    {
+        var task = await _dbContext.RecordTasks
+            .Include(item => item.RecordSession)
+            .Include(item => item.Result)
+            .FirstOrDefaultAsync(item => item.Id == recordTaskId, cancellationToken);
+        if (task?.RecordSession is null || task.Result is null)
+        {
+            return FragmentDispatchDecision.Wait("录制结果仍在写入。", TimeSpan.FromSeconds(2));
+        }
+
+        if (task.IsHiddenArtifactSource)
+        {
+            return FragmentDispatchDecision.Skip("该分片已并入相邻分片。", task.MergedIntoRecordTaskId);
+        }
+
+        var tasks = await _dbContext.RecordTasks
+            .Include(item => item.Result)
+            .Where(item => item.RecordSessionId == task.RecordSessionId && !item.IsHiddenArtifactSource)
+            .OrderBy(item => item.SegmentIndex)
+            .ThenBy(item => item.CreatedAt)
+            .ToListAsync(cancellationToken);
+        var index = tasks.FindIndex(item => item.Id == recordTaskId);
+        if (index < 0)
+        {
+            return FragmentDispatchDecision.Skip("该分片已被恢复流程收纳。", task.MergedIntoRecordTaskId);
+        }
+
+        var next = index + 1 < tasks.Count ? tasks[index + 1] : null;
+        if (next is not null && IsActive(next.Status))
+        {
+            var runtime = next.StartedAt.HasValue ? DateTimeOffset.UtcNow - next.StartedAt.Value : TimeSpan.Zero;
+            if (runtime < TimeSpan.FromSeconds(MinimumStandaloneDurationSeconds) || IsShort(task))
+            {
+                return FragmentDispatchDecision.Wait("等待下一分片完成短片判定。", TimeSpan.FromSeconds(2));
+            }
+        }
+        else if (next is null && IsActive(task.RecordSession.Status))
+        {
+            return FragmentDispatchDecision.Wait("等待下一分片，避免短片被提前上传。", TimeSpan.FromSeconds(2));
+        }
+
+        var group = ResolveMergeGroup(tasks, index);
+        if (group.Count == 1 && !IsShort(task))
+        {
+            return FragmentDispatchDecision.Ready;
+        }
+
+        var totalDuration = group.Sum(item => item.Result?.DurationSeconds ?? 0);
+        var target = group.FirstOrDefault(item => !IsShort(item));
+        if (target is null)
+        {
+            if (IsActive(task.RecordSession.Status))
+            {
+                return FragmentDispatchDecision.Wait("短分片正在等待相邻有效分片。", TimeSpan.FromSeconds(2));
+            }
+
+            if (totalDuration < MinimumStandaloneDurationSeconds)
+            {
+                await MoveRecoveryOnlyAsync(group, cancellationToken);
+                return FragmentDispatchDecision.Skip("本次会话仅产生不足 5 秒的可读媒体，已转存到恢复目录。", null);
+            }
+
+            target = group[^1];
+        }
+
+        var merged = await MergeAsync(task.RecordSession, target, group, cancellationToken);
+        return merged
+            ? target.Id == task.Id
+                ? FragmentDispatchDecision.Ready
+                : FragmentDispatchDecision.Skip("该分片已并入相邻分片。", target.Id)
+            : FragmentDispatchDecision.Wait("短分片合并失败，原文件已保留，将自动重试。", TimeSpan.FromMinutes(1));
+    }
+
+    public async Task<int> ResumeInterruptedMergesAsync(CancellationToken cancellationToken)
+    {
+        var sources = await _dbContext.RecordTasks
+            .AsNoTracking()
+            .Include(item => item.Result)
+            .Where(item => item.IsHiddenArtifactSource && item.Result != null)
+            .OrderByDescending(item => item.UpdatedAt)
+            .Take(100)
+            .ToListAsync(cancellationToken);
+        var manifests = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        foreach (var source in sources)
+        {
+            var parent = Path.GetDirectoryName(Path.GetFullPath(source.Result!.FilePath));
+            var recoveryBase = parent is null ? null : Path.Combine(parent, ".liverecorder-recovery", source.RecordSessionId.ToString("N"));
+            if (recoveryBase is null || !Directory.Exists(recoveryBase)) continue;
+            foreach (var path in Directory.EnumerateFiles(recoveryBase, "manifest.json", SearchOption.AllDirectories).Take(100)) manifests.Add(path);
+        }
+
+        var resumed = 0;
+        foreach (var path in manifests)
+        {
+            try
+            {
+                var manifest = JsonSerializer.Deserialize<MergeRecoveryManifest>(await File.ReadAllTextAsync(path, cancellationToken));
+                if (manifest is null || manifest.Phase == "completed" || string.IsNullOrWhiteSpace(manifest.MergedPath)) continue;
+                var targetPath = await _dbContext.RecordTasks
+                    .AsNoTracking()
+                    .Where(item => item.Id == manifest.TargetRecordTaskId && item.Result != null)
+                    .Select(item => item.Result!.FilePath)
+                    .FirstOrDefaultAsync(cancellationToken);
+                if (!File.Exists(manifest.MergedPath) || !string.Equals(Path.GetFullPath(targetPath ?? string.Empty), Path.GetFullPath(manifest.MergedPath), StringComparison.OrdinalIgnoreCase)) continue;
+
+                foreach (var source in manifest.Sources)
+                {
+                    CopyToRecovery(source.VideoPath, manifest.RecoveryDirectory);
+                    CopyToRecovery(source.DanmakuPath, manifest.RecoveryDirectory);
+                    DeleteOriginal(source.VideoPath, manifest.MergedPath);
+                    DeleteOriginal(source.DanmakuPath, Path.ChangeExtension(manifest.MergedPath, ".xml"));
+                }
+                await WriteManifestAsync(manifest.RecoveryDirectory, manifest with { Phase = "completed" }, cancellationToken);
+                resumed++;
+            }
+            catch (Exception ex) when (ex is IOException or UnauthorizedAccessException or JsonException)
+            {
+                _logger.LogWarning(ex, "Unable to resume short-fragment recovery manifest {ManifestPath}", path);
+            }
+        }
+        return resumed;
+    }
+
+    private static List<RecordTask> ResolveMergeGroup(IReadOnlyList<RecordTask> tasks, int index)
+    {
+        var durations = tasks.Select(item => IsReadableTerminal(item) ? item.Result!.DurationSeconds : null).ToArray();
+        var (start, end) = ResolveMergeWindow(durations, index);
+        return tasks.Skip(start).Take(end - start + 1).Where(IsReadableTerminal).ToList();
+    }
+
+    internal static (int Start, int End) ResolveMergeWindow(IReadOnlyList<double?> durations, int index)
+    {
+        if (durations.Count == 0 || index < 0 || index >= durations.Count) return (-1, -1);
+        var start = index;
+        var end = index;
+        while (start > 0 && durations[start - 1] is > 0 and < MinimumStandaloneDurationSeconds) start--;
+        while (end + 1 < durations.Count && durations[end + 1] is > 0 and < MinimumStandaloneDurationSeconds) end++;
+        if (durations[index] is > 0 and < MinimumStandaloneDurationSeconds)
+        {
+            if (start > 0 && durations[start - 1] is >= MinimumStandaloneDurationSeconds) start--;
+            else if (end + 1 < durations.Count && durations[end + 1] is >= MinimumStandaloneDurationSeconds) end++;
+        }
+        return (start, end);
+    }
+
+    private async Task<bool> MergeAsync(
+        RecordSession session,
+        RecordTask target,
+        IReadOnlyList<RecordTask> group,
+        CancellationToken cancellationToken)
+    {
+        var sources = group.Select(item => item.Result!.FilePath).Where(File.Exists).ToArray();
+        if (sources.Length != group.Count || sources.Length < 2) return false;
+
+        var mergeId = $"{DateTimeOffset.UtcNow:yyyyMMddHHmmss}-{Guid.NewGuid():N}";
+        var directory = Path.GetDirectoryName(Path.GetFullPath(target.Result!.FilePath))!;
+        var extension = Path.GetExtension(target.Result.FilePath);
+        var mergedPath = Path.Combine(directory, $"{Path.GetFileNameWithoutExtension(target.Result.FilePath)}-merged-{mergeId[..14]}{extension}");
+        var stagingPath = mergedPath + ".partial.mp4";
+        var recoveryDirectory = Path.Combine(directory, ".liverecorder-recovery", session.Id.ToString("N"), mergeId);
+        Directory.CreateDirectory(recoveryDirectory);
+
+        var manifest = new MergeRecoveryManifest(
+            mergeId,
+            session.Id,
+            target.Id,
+            "staging",
+            mergedPath,
+            recoveryDirectory,
+            group.Select(item => new MergeRecoverySource(item.Id, item.Result!.FilePath, item.Result.DanmakuFilePath, item.Result.DurationSeconds ?? 0)).ToArray(),
+            DateTimeOffset.UtcNow);
+        await WriteManifestAsync(recoveryDirectory, manifest, cancellationToken);
+
+        var settings = await _settingsService.GetAsync(cancellationToken);
+        var concatFile = Path.Combine(recoveryDirectory, "concat.txt");
+        await File.WriteAllLinesAsync(concatFile, sources.Select(path => $"file '{EscapeConcatPath(Path.GetFullPath(path))}'"), cancellationToken);
+
+        var copied = await RunFfmpegAsync(settings.FfmpegPath,
+            ["-hide_banner", "-loglevel", "warning", "-f", "concat", "-safe", "0", "-i", concatFile, "-map", "0", "-c", "copy", "-movflags", "+faststart", "-y", stagingPath],
+            cancellationToken);
+        if (!copied)
+        {
+            copied = await RunFfmpegAsync(settings.FfmpegPath,
+                ["-hide_banner", "-loglevel", "warning", "-f", "concat", "-safe", "0", "-i", concatFile, "-map", "0:v:0", "-map", "0:a?", "-c:v", "libx264", "-preset", "fast", "-crf", "20", "-c:a", "aac", "-b:a", "192k", "-movflags", "+faststart", "-y", stagingPath],
+                cancellationToken);
+        }
+
+        var metadata = copied ? await _metadataService.ExtractMetadataAsync(stagingPath, cancellationToken) : null;
+        if (metadata?.DurationSeconds is null or <= 0 || string.IsNullOrWhiteSpace(metadata.VideoCodec))
+        {
+            return false;
+        }
+
+        File.Move(stagingPath, mergedPath, overwrite: false);
+        var mergedDanmakuPath = await MergeDanmakuAsync(group, target, mergedPath, cancellationToken);
+
+        foreach (var source in group)
+        {
+            CopyToRecovery(source.Result!.FilePath, recoveryDirectory);
+            CopyToRecovery(source.Result.DanmakuFilePath, recoveryDirectory);
+        }
+
+        var now = DateTimeOffset.UtcNow;
+        target.Result.Update(
+            mergedPath,
+            new FileInfo(mergedPath).Length,
+            metadata.DurationSeconds,
+            mergedDanmakuPath,
+            group.Sum(item => item.Result!.DanmakuMessageCount),
+            RecordTaskStatus.Completed,
+            null);
+        target.MarkCompleted(now, metadata.DurationSeconds);
+
+        foreach (var source in group.Where(item => item.Id != target.Id))
+        {
+            source.MarkMergedSource(target.Id, now);
+            var dispatch = await _dbContext.RecordCompletionDispatches.FirstOrDefaultAsync(item => item.RecordTaskId == source.Id, cancellationToken);
+            dispatch?.MarkSkipped($"Merged into {target.Id}", now);
+        }
+
+        if (!await _dbContext.RecordCompletionDispatches.AnyAsync(item => item.RecordTaskId == target.Id, cancellationToken))
+        {
+            await _dbContext.RecordCompletionDispatches.AddAsync(new RecordCompletionDispatch(target.Id, now), cancellationToken);
+        }
+
+        await _dbContext.SaveChangesAsync(cancellationToken);
+
+        foreach (var source in manifest.Sources)
+        {
+            DeleteOriginal(source.VideoPath, mergedPath);
+            DeleteOriginal(source.DanmakuPath, mergedDanmakuPath);
+        }
+
+        await WriteManifestAsync(recoveryDirectory, manifest with { Phase = "completed" }, cancellationToken);
+        return true;
+    }
+
+    private async Task MoveRecoveryOnlyAsync(IReadOnlyList<RecordTask> group, CancellationToken cancellationToken)
+    {
+        if (group.Count == 0) return;
+        var sessionId = group[0].RecordSessionId;
+        var mergeId = $"recovery-only-{DateTimeOffset.UtcNow:yyyyMMddHHmmss}-{Guid.NewGuid():N}";
+        var directory = Path.GetDirectoryName(Path.GetFullPath(group[0].Result!.FilePath))!;
+        var recoveryDirectory = Path.Combine(directory, ".liverecorder-recovery", sessionId.ToString("N"), mergeId);
+        Directory.CreateDirectory(recoveryDirectory);
+        var manifest = new MergeRecoveryManifest(
+            mergeId,
+            sessionId,
+            group[0].Id,
+            "staging",
+            string.Empty,
+            recoveryDirectory,
+            group.Select(item => new MergeRecoverySource(item.Id, item.Result!.FilePath, item.Result.DanmakuFilePath, item.Result.DurationSeconds ?? 0)).ToArray(),
+            DateTimeOffset.UtcNow);
+        await WriteManifestAsync(recoveryDirectory, manifest, cancellationToken);
+        foreach (var item in group)
+        {
+            CopyToRecovery(item.Result!.FilePath, recoveryDirectory);
+            CopyToRecovery(item.Result.DanmakuFilePath, recoveryDirectory);
+            item.MarkRecoveryOnly(DateTimeOffset.UtcNow);
+            var dispatch = await _dbContext.RecordCompletionDispatches.FirstOrDefaultAsync(d => d.RecordTaskId == item.Id, cancellationToken);
+            dispatch?.MarkSkipped("Recovery-only short fragment", DateTimeOffset.UtcNow);
+        }
+        await _dbContext.SaveChangesAsync(cancellationToken);
+        foreach (var item in group)
+        {
+            DeleteOriginal(item.Result!.FilePath, null);
+            DeleteOriginal(item.Result.DanmakuFilePath, null);
+        }
+        await WriteManifestAsync(recoveryDirectory, manifest with { Phase = "completed" }, cancellationToken);
+    }
+
+    private static async Task<string?> MergeDanmakuAsync(
+        IReadOnlyList<RecordTask> group,
+        RecordTask target,
+        string mergedVideoPath,
+        CancellationToken cancellationToken)
+    {
+        var available = group.Where(item => !string.IsNullOrWhiteSpace(item.Result?.DanmakuFilePath) && File.Exists(item.Result.DanmakuFilePath)).ToList();
+        if (available.Count == 0) return null;
+
+        var root = new XElement("i",
+            new XAttribute("recordSessionId", target.RecordSessionId),
+            new XAttribute("recordTaskId", target.Id),
+            new XAttribute("merged", true));
+        var cumulative = 0d;
+        foreach (var item in group)
+        {
+            if (!string.IsNullOrWhiteSpace(item.Result?.DanmakuFilePath) && File.Exists(item.Result.DanmakuFilePath))
+            {
+                var source = await XDocument.LoadAsync(File.OpenRead(item.Result.DanmakuFilePath), LoadOptions.None, cancellationToken);
+                foreach (var element in source.Root?.Elements() ?? [])
+                {
+                    root.Add(AdjustDanmakuElementOffsets(element, cumulative));
+                }
+            }
+            cumulative += item.Result?.DurationSeconds ?? 0;
+        }
+
+        var output = Path.ChangeExtension(mergedVideoPath, ".xml");
+        await using var stream = File.Create(output);
+        await new XDocument(new XDeclaration("1.0", "UTF-8", null), root).SaveAsync(stream, SaveOptions.None, cancellationToken);
+        return output;
+    }
+
+    internal static XElement AdjustDanmakuElementOffsets(XElement element, double cumulativeSeconds)
+    {
+        var clone = new XElement(element);
+        if (clone.Name.LocalName == "d" && clone.Attribute("p") is { } p)
+        {
+            var parts = p.Value.Split(',');
+            if (parts.Length > 0 && double.TryParse(parts[0], NumberStyles.Float, CultureInfo.InvariantCulture, out var offset))
+            {
+                parts[0] = (offset + cumulativeSeconds).ToString("F1", CultureInfo.InvariantCulture);
+                p.Value = string.Join(',', parts);
+            }
+        }
+        else if (clone.Attribute("offset") is { } offsetAttribute &&
+                 double.TryParse(offsetAttribute.Value, NumberStyles.Float, CultureInfo.InvariantCulture, out var offset))
+        {
+            offsetAttribute.Value = (offset + cumulativeSeconds).ToString("F1", CultureInfo.InvariantCulture);
+        }
+        return clone;
+    }
+
+    private async Task<bool> RunFfmpegAsync(string path, IReadOnlyList<string> arguments, CancellationToken cancellationToken)
+    {
+        using var process = new Process { StartInfo = new ProcessStartInfo(path) { UseShellExecute = false, RedirectStandardError = true, RedirectStandardOutput = true, CreateNoWindow = true } };
+        foreach (var argument in arguments) process.StartInfo.ArgumentList.Add(argument);
+        try
+        {
+            process.Start();
+            using var timeout = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
+            timeout.CancelAfter(ProcessTimeout);
+            var stderr = process.StandardError.ReadToEndAsync(timeout.Token);
+            var stdout = process.StandardOutput.ReadToEndAsync(timeout.Token);
+            await process.WaitForExitAsync(timeout.Token);
+            await Task.WhenAll(stderr, stdout);
+            if (process.ExitCode == 0) return true;
+            _logger.LogWarning("Short fragment merge ffmpeg failed: {Error}", await stderr);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "Short fragment merge process failed");
+            try { if (!process.HasExited) process.Kill(true); } catch { }
+        }
+        return false;
+    }
+
+    private static bool IsShort(RecordTask task) =>
+        IsReadableTerminal(task) && task.Result!.DurationSeconds!.Value < MinimumStandaloneDurationSeconds;
+    private static bool IsReadableTerminal(RecordTask task) =>
+        task.Status is RecordTaskStatus.Completed or RecordTaskStatus.Stopped &&
+        task.Result?.DurationSeconds is > 0 && File.Exists(task.Result.FilePath);
+    private static bool IsActive(RecordTaskStatus status) => status is RecordTaskStatus.Pending or RecordTaskStatus.Starting or RecordTaskStatus.Running or RecordTaskStatus.Stopping or RecordTaskStatus.Processing;
+    private static bool IsActive(RecordSessionStatus status) => status is RecordSessionStatus.Pending or RecordSessionStatus.Starting or RecordSessionStatus.Running or RecordSessionStatus.Stopping;
+    private static string EscapeConcatPath(string path) => path.Replace("'", "'\\''", StringComparison.Ordinal);
+    private static void CopyToRecovery(string? source, string directory)
+    {
+        if (string.IsNullOrWhiteSpace(source) || !File.Exists(source)) return;
+        var destination = Path.Combine(directory, Path.GetFileName(source));
+        if (!File.Exists(destination)) File.Copy(source, destination);
+    }
+    private static void DeleteOriginal(string? source, string? preserved)
+    {
+        if (string.IsNullOrWhiteSpace(source) || string.Equals(Path.GetFullPath(source), preserved is null ? null : Path.GetFullPath(preserved), StringComparison.OrdinalIgnoreCase)) return;
+        if (File.Exists(source)) File.Delete(source);
+    }
+    private static async Task WriteManifestAsync(string directory, MergeRecoveryManifest manifest, CancellationToken cancellationToken)
+    {
+        var path = Path.Combine(directory, "manifest.json");
+        var temp = path + ".tmp";
+        await File.WriteAllTextAsync(temp, JsonSerializer.Serialize(manifest, new JsonSerializerOptions { WriteIndented = true }), cancellationToken);
+        File.Move(temp, path, true);
+    }
+}
+
+public sealed record FragmentDispatchDecision(bool CanDispatch, bool SkipDispatch, string? Reason, TimeSpan RetryDelay, Guid? MergedIntoRecordTaskId)
+{
+    public static readonly FragmentDispatchDecision Ready = new(true, false, null, TimeSpan.Zero, null);
+    public static FragmentDispatchDecision Wait(string reason, TimeSpan delay) => new(false, false, reason, delay, null);
+    public static FragmentDispatchDecision Skip(string reason, Guid? target) => new(false, true, reason, TimeSpan.Zero, target);
+}
+
+internal sealed record MergeRecoveryManifest(string MergeId, Guid RecordSessionId, Guid TargetRecordTaskId, string Phase, string MergedPath, string RecoveryDirectory, IReadOnlyList<MergeRecoverySource> Sources, DateTimeOffset CreatedAt);
+internal sealed record MergeRecoverySource(Guid RecordTaskId, string VideoPath, string? DanmakuPath, double DurationSeconds);

src/LiveRecorder.WebApi/Controllers/RecordTasksController.cs

@@ -19,6 +19,7 @@ public sealed class RecordTasksController : ControllerBase
     private readonly IRecordMediaService _recordMediaService;
     private readonly IDanmakuService _danmakuService;
     private readonly LinkGenerator _linkGenerator;
+    private readonly OpenListUploadQueueService _openListUploadQueue;
 
     public RecordTasksController(
         RecordService recordService,
@@ -26,7 +27,8 @@ public sealed class RecordTasksController : ControllerBase
         IRecordResultRepository recordResultRepository,
         IRecordMediaService recordMediaService,
         IDanmakuService danmakuService,
-        LinkGenerator linkGenerator)
+        LinkGenerator linkGenerator,
+        OpenListUploadQueueService openListUploadQueue)
     {
         _recordService = recordService;
         _recordUploadService = recordUploadService;
@@ -34,6 +36,7 @@ public sealed class RecordTasksController : ControllerBase
         _recordMediaService = recordMediaService;
         _danmakuService = danmakuService;
         _linkGenerator = linkGenerator;
+        _openListUploadQueue = openListUploadQueue;
     }
 
     [HttpGet]
@@ -43,6 +46,7 @@ public sealed class RecordTasksController : ControllerBase
     [HttpGet("upload-status")]
     public async Task<ActionResult<UploadTaskListResponse>> ListUploadStatus(
         [FromQuery] int? uploadStatus,
+        [FromQuery] string? query,
         [FromQuery] int skip = 0,
         [FromQuery] int take = 50,
         CancellationToken cancellationToken = default)
@@ -51,15 +55,27 @@ public sealed class RecordTasksController : ControllerBase
             ? (RecordArtifactUploadStatus)uploadStatus.Value
             : (RecordArtifactUploadStatus?)null;
 
-        var items = await _recordResultRepository.ListUploadStatusAsync(filter, skip, take, cancellationToken);
-        var totalCount = await _recordResultRepository.CountUploadStatusAsync(filter, cancellationToken);
+        var items = await _recordResultRepository.ListUploadStatusAsync(filter, query, skip, take, cancellationToken);
+        var totalCount = await _recordResultRepository.CountUploadStatusAsync(filter, query, cancellationToken);
         var notUploadedCount = await _recordResultRepository.CountPendingUploadAsync(cancellationToken);
         var failedArtifactCount = await _recordResultRepository.CountFailedArtifactAsync(cancellationToken);
-        var succeededCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.Succeeded, cancellationToken);
-        var failedCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.Failed, cancellationToken);
-        var queuedCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.Queued, cancellationToken);
-        var uploadingCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.Uploading, cancellationToken);
-        var waitingRetryCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.WaitingRetry, cancellationToken);
+        var succeededCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.Succeeded, null, cancellationToken);
+        var failedCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.Failed, null, cancellationToken);
+        var queuedCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.Queued, null, cancellationToken);
+        var uploadingCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.Uploading, null, cancellationToken);
+        var waitingRetryCount = await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.WaitingRetry, null, cancellationToken);
+        var hasQuery = !string.IsNullOrWhiteSpace(query);
+        var matchingFailedCount = filter is null or RecordArtifactUploadStatus.Failed
+            ? hasQuery
+                ? await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.Failed, query, cancellationToken)
+                : failedCount
+            : 0;
+        var matchingWaitingRetryCount = filter is null or RecordArtifactUploadStatus.WaitingRetry
+            ? hasQuery
+                ? await _recordResultRepository.CountUploadStatusAsync(RecordArtifactUploadStatus.WaitingRetry, query, cancellationToken)
+                : waitingRetryCount
+            : 0;
+        var health = _openListUploadQueue.GetHealthSnapshot();
 
         return Ok(new UploadTaskListResponse
         {
@@ -71,7 +87,16 @@ public sealed class RecordTasksController : ControllerBase
             FailedCount = failedCount,
             QueuedCount = queuedCount,
             UploadingCount = uploadingCount,
-            WaitingRetryCount = waitingRetryCount
+            WaitingRetryCount = waitingRetryCount,
+            MatchingRetryableCount = matchingFailedCount + matchingWaitingRetryCount,
+            QueueHealth = new UploadQueueHealthDto
+            {
+                State = health.Status.ToString(),
+                IsPaused = health.IsPaused,
+                Reason = health.Reason,
+                RetryAt = health.RetryAt,
+                LastErrorAt = health.LastErrorAt
+            }
         });
     }
 
@@ -180,6 +205,22 @@ public sealed class RecordTasksController : ControllerBase
             : Ok(result);
     }
 
+    [HttpPost("{id:guid}/upload/retry")]
+    public async Task<ActionResult<RecordArtifactUploadItemResultDto>> RetryUpload(Guid id, CancellationToken cancellationToken)
+    {
+        var result = await _recordUploadService.RetryTaskAsync(id, cancellationToken);
+        return result.Success ? Accepted(result) : BadRequest(result);
+    }
+
+    [HttpPost("upload/retry")]
+    public async Task<ActionResult<RecordArtifactUploadBatchResultDto>> RetryUploads(
+        [FromBody] RetryRecordArtifactUploadsRequest request,
+        CancellationToken cancellationToken)
+    {
+        var result = await _recordUploadService.RetryMatchingAsync(request, cancellationToken);
+        return result.FailedCount > 0 && result.SuccessCount == 0 ? BadRequest(result) : Accepted(result);
+    }
+
     [HttpGet("{id:guid}/danmaku")]
     public async Task<ActionResult<DanmakuResponseDto>> GetDanmaku(Guid id, CancellationToken cancellationToken)
     {

src/LiveRecorder.WebApi/Controllers/RecoveryController.cs

@@ -34,4 +34,25 @@ public sealed class RecoveryController : ControllerBase
     [HttpPost("finalizations/resume-all")]
     public async Task<ActionResult<RecoveryActionResultDto>> ResumeAllFinalizations(CancellationToken cancellationToken) =>
         Ok(await _recoveryService.ResumeAllFinalizationsAsync(cancellationToken));
+
+    [HttpGet("recording-failures")]
+    public async Task<ActionResult<RecordingFailureListResponse>> ListRecordingFailures(
+        [FromQuery] string? failureKind,
+        [FromQuery] int skip = 0,
+        [FromQuery] int take = 20,
+        CancellationToken cancellationToken = default) =>
+        Ok(await _recoveryService.ListRecordingFailuresAsync(failureKind, skip, take, cancellationToken));
+
+    [HttpPost("recording-failures/{taskId:guid}/accept")]
+    public async Task<ActionResult<RecoveryActionResultDto>> AcceptRecordingFailure(
+        Guid taskId,
+        [FromBody] AcceptRecordingArtifactRequest request,
+        CancellationToken cancellationToken) =>
+        Ok(await _recoveryService.AcceptRecordingArtifactAsync(taskId, request.ConfirmShortArtifact, cancellationToken));
+
+    [HttpPost("recording-failures/{taskId:guid}/repair")]
+    public async Task<ActionResult<RecoveryActionResultDto>> RepairRecordingFailure(
+        Guid taskId,
+        CancellationToken cancellationToken) =>
+        Ok(await _recoveryService.RepairRecordingArtifactAsync(taskId, cancellationToken));
 }

src/LiveRecorder.WebApi/Controllers/UploadQueueController.cs

@@ -0,0 +1,44 @@
+using LiveRecorder.Application.Models.RecordTasks;
+using LiveRecorder.Infrastructure.Services;
+using Microsoft.AspNetCore.Mvc;
+
+namespace LiveRecorder.WebApi.Controllers;
+
+[ApiController]
+[Route("api/upload-queue")]
+public sealed class UploadQueueController : ControllerBase
+{
+    private readonly OpenListUploadQueueService _queue;
+
+    public UploadQueueController(OpenListUploadQueueService queue)
+    {
+        _queue = queue;
+    }
+
+    [HttpPost("openlist/resume")]
+    public async Task<ActionResult<UploadQueueHealthDto>> ResumeOpenList(CancellationToken cancellationToken)
+    {
+        try
+        {
+            var health = await _queue.ResumeProviderAsync(cancellationToken);
+            return Ok(Map(health));
+        }
+        catch (Exception ex)
+        {
+            return BadRequest(new
+            {
+                message = ex.Message,
+                queueHealth = Map(_queue.GetHealthSnapshot())
+            });
+        }
+    }
+
+    private static UploadQueueHealthDto Map(OpenListQueueHealthSnapshot health) => new()
+    {
+        State = health.Status.ToString(),
+        IsPaused = health.IsPaused,
+        Reason = health.Reason,
+        RetryAt = health.RetryAt,
+        LastErrorAt = health.LastErrorAt
+    };
+}

src/LiveRecorder.WebApi/Program.cs

@@ -211,7 +211,9 @@ builder.Services.AddScoped<PlatformHttpClientFactory>();
 builder.Services.AddScoped<PlatformHttpRequestService>();
 builder.Services.AddScoped<RecordUploadService>();
 builder.Services.AddScoped<CompletionDispatchService>();
+builder.Services.AddScoped<ShortFragmentConsolidationService>();
 builder.Services.AddScoped<OpenListUploadQueueService>();
+builder.Services.AddSingleton<OpenListUploadHealthState>();
 builder.Services.AddSingleton<IOpenListClient, OpenListClient>();
 builder.Services.AddScoped<IDanmakuService, DanmakuService>();
 builder.Services.AddScoped<IVideoMetadataService, FfmpegVideoMetadataService>();

tests/LiveRecorder.Tests/FfmpegFailureClassificationTests.cs

@@ -103,6 +103,16 @@ public sealed class FfmpegFailureClassificationTests
             FfmpegService.IsMeaningfulUnexpectedExitArtifact(durationSeconds, fileSizeBytes));
     }
 
+    [Theory]
+    [InlineData(59, false)]
+    [InlineData(60, true)]
+    [InlineData(3600, true)]
+    public void StableRuntime_ResetsInSessionRecoveryBudget(int seconds, bool expected)
+    {
+        var now = DateTimeOffset.Parse("2026-08-04T20:00:00+08:00");
+        Assert.Equal(expected, FfmpegService.CanResetInSessionRetryBudget(now.AddSeconds(-seconds), now));
+    }
+
     [Theory]
     [InlineData("https://example.test/live.flv", "flv", true)]
     [InlineData("https://example.test/live.m3u8", "hls", false)]

tests/LiveRecorder.Tests/OpenListUploadTests.cs

@@ -299,6 +299,105 @@ public sealed class OpenListUploadTests
         Assert.Equal(now.AddSeconds(3), job.VerificationStartedAt);
     }
 
+    [Fact]
+    public void UploadJob_ImmediateRetryResetsBudgetButPreservesExternalTask()
+    {
+        var now = DateTimeOffset.Parse("2026-08-04T10:00:00+08:00");
+        var job = new RecordUploadJob(
+            Guid.NewGuid(),
+            "https://openlist.example.com",
+            "/source/video.mp4",
+            "/archive/video.mp4",
+            100,
+            null,
+            null,
+            null,
+            false,
+            now);
+        job.BeginAttempt(now.AddSeconds(1));
+        job.TrackExternalTask("copy-1", "copy", 30, now.AddSeconds(2));
+        job.ScheduleRetry("temporary", now.AddMinutes(5), now.AddSeconds(3), clearExternalTask: false);
+
+        job.RequestImmediateRetry(now.AddSeconds(4));
+
+        Assert.Equal(RecordArtifactUploadStatus.Queued, job.Status);
+        Assert.Equal(0, job.AttemptCount);
+        Assert.Null(job.NextAttemptAt);
+        Assert.Equal("copy-1", job.ExternalTaskId);
+        Assert.Equal(30, job.ProgressPercent);
+    }
+
+    [Fact]
+    public async Task LoginRateLimit_OpensProviderCircuit()
+    {
+        var state = new OpenListUploadHealthState();
+        var loginCount = 0;
+        var handler = new StubHttpMessageHandler(_ =>
+        {
+            loginCount++;
+            return Task.FromResult(new HttpResponseMessage(HttpStatusCode.TooManyRequests)
+            {
+                Content = new StringContent(
+                    "{\"code\":429,\"message\":\"错误账号密码尝试过多\",\"data\":null}",
+                    Encoding.UTF8,
+                    "application/json")
+            });
+        });
+        var client = new OpenListClient(new StubHttpClientFactory(handler), state);
+
+        var error = await Assert.ThrowsAsync<OpenListApiException>(() =>
+            client.EnsureAuthenticatedAsync(Connection()));
+
+        Assert.True(error.IsRateLimited);
+        Assert.Equal(1, loginCount);
+        var snapshot = state.GetSnapshot();
+        Assert.Equal(OpenListQueueHealthStatus.RateLimited, snapshot.Status);
+        Assert.True(snapshot.RetryAt > DateTimeOffset.UtcNow);
+        Assert.False(state.CanProcess(DateTimeOffset.UtcNow));
+    }
+
+    [Fact]
+    public async Task NonJsonRateLimit_StillOpensProviderCircuit()
+    {
+        var state = new OpenListUploadHealthState();
+        var handler = new StubHttpMessageHandler(_ => Task.FromResult(new HttpResponseMessage(HttpStatusCode.TooManyRequests)
+        {
+            Content = new StringContent("rate limited by reverse proxy", Encoding.UTF8, "text/plain")
+        }));
+        var client = new OpenListClient(new StubHttpClientFactory(handler), state);
+
+        var error = await Assert.ThrowsAsync<OpenListApiException>(() =>
+            client.EnsureAuthenticatedAsync(Connection()));
+
+        Assert.True(error.IsRateLimited);
+        Assert.Equal(OpenListQueueHealthStatus.RateLimited, state.GetSnapshot().Status);
+    }
+
+    [Fact]
+    public void UploadJob_ProviderPauseRollsBackOnlyTheCurrentAttempt()
+    {
+        var now = DateTimeOffset.Parse("2026-08-04T10:00:00+08:00");
+        var job = new RecordUploadJob(
+            Guid.NewGuid(),
+            "https://openlist.example.com",
+            "/source/video.mp4",
+            "/archive/video.mp4",
+            100,
+            null,
+            null,
+            null,
+            false,
+            now);
+        job.BeginAttempt(now.AddSeconds(1));
+
+        job.SuspendForProviderFailure("rate limited", now.AddSeconds(2), rollbackAttempt: true);
+
+        Assert.Equal(RecordArtifactUploadStatus.WaitingRetry, job.Status);
+        Assert.Equal(0, job.AttemptCount);
+        Assert.Null(job.NextAttemptAt);
+        Assert.Equal("rate limited", job.ErrorMessage);
+    }
+
     [Fact]
     public async Task Queue_MapsOutputRelativePathAndTreatsMatchingTargetAsIdempotentSuccess()
     {
@@ -648,7 +747,13 @@ public sealed class OpenListUploadTests
         }
 
         private OpenListUploadQueueService CreateQueue(LiveRecorderDbContext context) =>
-            new(context, _settingsService, OpenList, new NullSystemLogService(), _videoMetadataService);
+            new(
+                context,
+                _settingsService,
+                OpenList,
+                new OpenListUploadHealthState(),
+                new NullSystemLogService(),
+                _videoMetadataService);
     }
 
     private sealed class FixedVideoMetadataService : IVideoMetadataService
@@ -723,6 +828,11 @@ public sealed class OpenListUploadTests
 
         public OpenListCopyResult NextCopyResult { get; set; } = new([]);
 
+        public Task EnsureAuthenticatedAsync(
+            OpenListConnectionRequest connection,
+            bool forceRefresh = false,
+            CancellationToken cancellationToken = default) => Task.CompletedTask;
+
         public Task<OpenListConnectionTestDto> TestConnectionAsync(
             OpenListConnectionRequest connection,
             CancellationToken cancellationToken = default) => throw new NotSupportedException();

tests/LiveRecorder.Tests/RecordSessionRepositoryTests.cs

@@ -141,6 +141,7 @@ public sealed class RecordSessionRepositoryTests
         Assert.Equal(30, firstPage.TotalCount);
         Assert.Equal(10, firstPage.Items.Count);
         Assert.Equal(oldActive.Id, firstPage.Items[0].Id);
+        Assert.Equal("分页主播", firstPage.Items[0].LiveRoom?.AnchorName);
         Assert.Equal(29, completedPage.TotalCount);
         Assert.DoesNotContain(completedPage.Items, item => item.Id == oldActive.Id);
         Assert.Single(searchPage.Items);

tests/LiveRecorder.Tests/RecordingContinuityTests.cs

@@ -0,0 +1,110 @@
+using LiveRecorder.Domain.Entities;
+using LiveRecorder.Domain.Enums;
+using LiveRecorder.Infrastructure.Services;
+using System.Xml.Linq;
+
+namespace LiveRecorder.Tests;
+
+public sealed class RecordingContinuityTests
+{
+    [Theory]
+    [InlineData(true, false, true)]
+    [InlineData(false, true, true)]
+    [InlineData(false, false, false)]
+    public void SessionTransition_IsTreatedAsActive(bool process, bool transition, bool expected) =>
+        Assert.Equal(expected, FfmpegService.IsSessionRuntimeActive(process, transition));
+
+    [Theory]
+    [InlineData(1, 5)]
+    [InlineData(2, 15)]
+    [InlineData(3, 30)]
+    [InlineData(4, 60)]
+    [InlineData(5, 120)]
+    [InlineData(50, 120)]
+    public void RuntimeRecoveryBackoff_IsBoundedAtTwoMinutes(int attempt, int seconds) =>
+        Assert.Equal(TimeSpan.FromSeconds(seconds), FfmpegService.GetRuntimeRecoveryDelay(attempt));
+
+    [Theory]
+    [InlineData(null, false, false)]
+    [InlineData(0.0, false, false)]
+    [InlineData(0.1, true, false)]
+    [InlineData(4.99, true, false)]
+    [InlineData(5.0, true, true)]
+    public void MediaDuration_SeparatesReadableFromStandalone(double? duration, bool readable, bool standalone)
+    {
+        Assert.Equal(readable, FfmpegService.IsReadableMediaDuration(duration));
+        Assert.Equal(standalone, FfmpegService.IsStandaloneMediaDuration(duration));
+    }
+
+    [Fact]
+    public void OfflineSample_RequiresConfirmation_ButLiveDoesNot()
+    {
+        Assert.True(LiveRoomPollingBackgroundService.RequiresOfflineConfirmation(false));
+        Assert.False(LiveRoomPollingBackgroundService.RequiresOfflineConfirmation(true));
+    }
+
+    [Theory]
+    [InlineData(false, RecordTaskStatus.Starting, true)]
+    [InlineData(false, RecordTaskStatus.Running, true)]
+    [InlineData(true, RecordTaskStatus.Running, false)]
+    [InlineData(false, RecordTaskStatus.Completed, false)]
+    public void ArtifactlessRecovery_ReusesOnlyActiveTask(bool hasMedia, RecordTaskStatus status, bool expected) =>
+        Assert.Equal(expected, FfmpegService.ShouldReuseRecoveryTask(hasMedia, status));
+
+    [Fact]
+    public void SessionRecoveryMarker_KeepsSessionActive()
+    {
+        var session = new RecordSession(Guid.NewGuid(), "origin", RecordOutputFormat.Mp4, RecordSaveMode.Segmented, DateTimeOffset.UtcNow);
+        session.MarkRecovering("[runtime-recovery] attempt=4; curl EOF", DateTimeOffset.UtcNow);
+
+        Assert.Equal(RecordSessionStatus.Starting, session.Status);
+        Assert.StartsWith("[runtime-recovery]", session.ErrorMessage);
+        Assert.Null(session.EndedAt);
+    }
+
+    [Fact]
+    public void MergedSource_PointsAtTargetAndBecomesHidden()
+    {
+        var source = new RecordTask(Guid.NewGuid(), Guid.NewGuid(), 2, "origin", RecordOutputFormat.Mp4, DateTimeOffset.UtcNow);
+        var targetId = Guid.NewGuid();
+        source.MarkMergedSource(targetId, DateTimeOffset.UtcNow);
+
+        Assert.True(source.IsHiddenArtifactSource);
+        Assert.Equal(targetId, source.MergedIntoRecordTaskId);
+    }
+
+    [Fact]
+    public void MergeWindow_FirstShortFragment_MergesForward()
+    {
+        var window = ShortFragmentConsolidationService.ResolveMergeWindow([1.2, 60], 0);
+        Assert.Equal((0, 1), window);
+    }
+
+    [Fact]
+    public void MergeWindow_TrailingShortFragment_MergesBackward()
+    {
+        var window = ShortFragmentConsolidationService.ResolveMergeWindow([60, 1.2], 0);
+        Assert.Equal((0, 1), window);
+    }
+
+    [Fact]
+    public void MergeWindow_ConsecutiveShortFragments_AreAccumulated()
+    {
+        var window = ShortFragmentConsolidationService.ResolveMergeWindow([1.2, 2.4, 60], 1);
+        Assert.Equal((0, 2), window);
+    }
+
+    [Fact]
+    public void DanmakuMerge_ShiftsRelativeOffset_ButPreservesAbsoluteTimestamp()
+    {
+        var chat = XElement.Parse("<d p=\"1.5,1,25,16777215,1720000000000,0,1,0\">hi</d>");
+        var shiftedChat = ShortFragmentConsolidationService.AdjustDanmakuElementOffsets(chat, 4.25);
+        Assert.StartsWith("5.8,", shiftedChat.Attribute("p")!.Value);
+        Assert.Contains("1720000000000", shiftedChat.Attribute("p")!.Value);
+
+        var eventElement = XElement.Parse("<event ts=\"1720000000123\" offset=\"2.0\" />");
+        var shiftedEvent = ShortFragmentConsolidationService.AdjustDanmakuElementOffsets(eventElement, 4.25);
+        Assert.Equal("6.2", shiftedEvent.Attribute("offset")!.Value);
+        Assert.Equal("1720000000123", shiftedEvent.Attribute("ts")!.Value);
+    }
+}

tests/LiveRecorder.Tests/RecoveryServiceTests.cs

@@ -0,0 +1,170 @@
+using LiveRecorder.Application.Abstractions.Logging;
+using LiveRecorder.Application.Abstractions.Recording;
+using LiveRecorder.Application.Models.Logs;
+using LiveRecorder.Domain.Entities;
+using LiveRecorder.Domain.Enums;
+using LiveRecorder.Infrastructure.Persistence;
+using LiveRecorder.Infrastructure.Services;
+using Microsoft.EntityFrameworkCore;
+
+namespace LiveRecorder.Tests;
+
+public sealed class RecoveryServiceTests : IDisposable
+{
+    private readonly string _temporaryDirectory = Path.Combine(
+        Path.GetTempPath(),
+        $"liverecorder-artifact-recovery-{Guid.NewGuid():N}");
+
+    [Fact]
+    public async Task AcceptShortArtifact_RequiresConfirmationThenLeavesItForManualUpload()
+    {
+        Directory.CreateDirectory(_temporaryDirectory);
+        var mediaPath = Path.Combine(_temporaryDirectory, "short-fragment.mp4");
+        await File.WriteAllBytesAsync(mediaPath, [1, 2, 3, 4]);
+        await using var context = CreateContext();
+        var taskId = await SeedFailedTaskAsync(context, mediaPath, durationSeconds: 3);
+        var service = CreateService(context, new VideoMetadata(3, 1920, 1080, "h264", "aac", 30, 2_000_000));
+
+        var rejected = await service.AcceptRecordingArtifactAsync(taskId, confirmShortArtifact: false);
+
+        Assert.Equal(0, rejected.SuccessCount);
+        Assert.Contains("需要确认短分片", rejected.Messages.Single());
+        Assert.Equal(RecordTaskStatus.Failed, (await context.RecordTasks.FindAsync(taskId))!.Status);
+
+        var accepted = await service.AcceptRecordingArtifactAsync(taskId, confirmShortArtifact: true);
+
+        Assert.Equal(1, accepted.SuccessCount);
+        var task = await context.RecordTasks.Include(item => item.Result).SingleAsync(item => item.Id == taskId);
+        Assert.Equal(RecordTaskStatus.Completed, task.Status);
+        Assert.Equal(RecordArtifactUploadStatus.NotUploaded, task.Result!.UploadStatus);
+        Assert.Null(task.Result.LastUploadProvider);
+        Assert.Null(task.Result.LastUploadedAt);
+        Assert.Null(task.Result.UploadErrorMessage);
+        Assert.True(File.Exists(mediaPath));
+    }
+
+    [Fact]
+    public async Task ListFailures_IdentifiesMissingMediaAsUnrecoverable()
+    {
+        Directory.CreateDirectory(_temporaryDirectory);
+        var missingPath = Path.Combine(_temporaryDirectory, "missing.mp4");
+        await using var context = CreateContext();
+        await SeedFailedTaskAsync(context, missingPath, durationSeconds: 120);
+        var service = CreateService(context, metadata: null);
+
+        var response = await service.ListRecordingFailuresAsync("MissingMedia", 0, 20);
+
+        var item = Assert.Single(response.Items);
+        Assert.Equal("MissingMedia", item.FailureKind);
+        Assert.False(item.FileExists);
+        Assert.False(item.CanAccept);
+        Assert.False(item.CanRepair);
+    }
+
+    private static LiveRecorderDbContext CreateContext()
+    {
+        var options = new DbContextOptionsBuilder<LiveRecorderDbContext>()
+            .UseInMemoryDatabase($"artifact-recovery-{Guid.NewGuid():N}")
+            .Options;
+        return new LiveRecorderDbContext(options);
+    }
+
+    private static async Task<Guid> SeedFailedTaskAsync(
+        LiveRecorderDbContext context,
+        string mediaPath,
+        double durationSeconds)
+    {
+        var now = DateTimeOffset.UtcNow;
+        var room = new LiveRoom(
+            LivePlatformType.Douyin,
+            "https://live.example/recovery",
+            "recovery-room",
+            "https://live.example/recovery",
+            now.AddHours(-1));
+        room.UpdateMetadata("恢复测试直播间", "恢复主播", null, null, null, now.AddHours(-1));
+        var session = new RecordSession(
+            room.Id,
+            "origin",
+            RecordOutputFormat.Mp4,
+            RecordSaveMode.Segmented,
+            now.AddMinutes(-10));
+        session.MarkFailed("ffmpeg exited unexpectedly", now);
+        var task = new RecordTask(
+            room.Id,
+            session.Id,
+            1,
+            "origin",
+            RecordOutputFormat.Mp4,
+            now.AddMinutes(-10));
+        task.MarkStarting("https://stream.example/recovery", mediaPath, now.AddMinutes(-10));
+        task.MarkFailed("ffmpeg exited unexpectedly", now, durationSeconds);
+        var result = new RecordResult(
+            task.Id,
+            mediaPath,
+            File.Exists(mediaPath) ? new FileInfo(mediaPath).Length : null,
+            durationSeconds,
+            null,
+            0,
+            RecordTaskStatus.Failed,
+            task.ErrorMessage,
+            now);
+        result.MarkUploadFailed("openlist", "previous upload error", now);
+
+        context.AddRange(room, session, task, result);
+        await context.SaveChangesAsync();
+        return task.Id;
+    }
+
+    private static RecoveryService CreateService(LiveRecorderDbContext context, VideoMetadata? metadata) =>
+        new(
+            context,
+            systemSettingsService: null!,
+            storageGuardService: null!,
+            ffmpegService: null!,
+            recordService: null!,
+            videoMetadataService: new FixedVideoMetadataService(metadata),
+            systemLogService: new NullSystemLogService());
+
+    public void Dispose()
+    {
+        if (Directory.Exists(_temporaryDirectory))
+        {
+            Directory.Delete(_temporaryDirectory, recursive: true);
+        }
+    }
+
+    private sealed class FixedVideoMetadataService(VideoMetadata? metadata) : IVideoMetadataService
+    {
+        public Task<VideoMetadata?> ExtractMetadataAsync(
+            string filePath,
+            CancellationToken cancellationToken = default) => Task.FromResult(metadata);
+
+        public Task<string?> GenerateThumbnailAsync(
+            string filePath,
+            string outputDir,
+            CancellationToken cancellationToken = default) => Task.FromResult<string?>(null);
+    }
+
+    private sealed class NullSystemLogService : ISystemLogService
+    {
+        public Task WriteAsync(
+            SystemLogLevel level,
+            string category,
+            string message,
+            string? detail = null,
+            Guid? liveRoomId = null,
+            Guid? recordSessionId = null,
+            Guid? recordTaskId = null,
+            CancellationToken cancellationToken = default) => Task.CompletedTask;
+
+        public Task<IReadOnlyList<SystemLogDto>> ListAsync(
+            Guid? liveRoomId = null,
+            Guid? recordSessionId = null,
+            Guid? recordTaskId = null,
+            SystemLogLevel? level = null,
+            string? content = null,
+            int take = 200,
+            CancellationToken cancellationToken = default) =>
+            Task.FromResult<IReadOnlyList<SystemLogDto>>([]);
+    }
+}