diff --git a/frontend/src/api/client.ts b/frontend/src/api/client.ts
index c8e890f..b35f8ee 100644
--- a/frontend/src/api/client.ts
+++ b/frontend/src/api/client.ts
@@ -154,7 +154,7 @@ function notifyBackendUnavailable(message: string) {
 }
 
 apiClient.interceptors.request.use((config) => {
-  const token = localStorage.getItem("live-recorder-token");
+  const token = localStorage.getItem("live-recorder-token") ?? sessionStorage.getItem("live-recorder-token");
   if (token) {
     config.headers.Authorization = `Bearer ${token}`;
   }
@@ -172,6 +172,8 @@ apiClient.interceptors.response.use(
       markBackendAvailable();
       localStorage.removeItem("live-recorder-token");
       localStorage.removeItem("live-recorder-user");
+      sessionStorage.removeItem("live-recorder-token");
+      sessionStorage.removeItem("live-recorder-user");
 
       if (window.location.pathname !== "/login") {
         window.location.href = "/login";
diff --git a/frontend/src/stores/auth.ts b/frontend/src/stores/auth.ts
index a369347..f682282 100644
--- a/frontend/src/stores/auth.ts
+++ b/frontend/src/stores/auth.ts
@@ -6,38 +6,51 @@ import type { AuthenticatedUser, LoginResponse } from "@/types";
 const USER_STORAGE_KEY = "live-recorder-user";
 const TOKEN_STORAGE_KEY = "live-recorder-token";
 
+function readStoredValue(key: string) {
+  return localStorage.getItem(key) ?? sessionStorage.getItem(key);
+}
+
+function clearStoredSession() {
+  [localStorage, sessionStorage].forEach((storage) => {
+    storage.removeItem(TOKEN_STORAGE_KEY);
+    storage.removeItem(USER_STORAGE_KEY);
+  });
+}
+
 export const useAuthStore = defineStore("auth", () => {
-  const token = ref(localStorage.getItem(TOKEN_STORAGE_KEY) ?? "");
+  const token = ref(readStoredValue(TOKEN_STORAGE_KEY) ?? "");
   const user = ref<AuthenticatedUser | null>(
     (() => {
-      const raw = localStorage.getItem(USER_STORAGE_KEY);
+      const raw = readStoredValue(USER_STORAGE_KEY);
       return raw ? (JSON.parse(raw) as AuthenticatedUser) : null;
     })()
   );
 
   const isAuthenticated = computed(() => Boolean(token.value));
 
-  function persistSession(session: LoginResponse) {
+  function persistSession(session: LoginResponse, rememberMe: boolean) {
     token.value = session.token;
     user.value = session.user;
-    localStorage.setItem(TOKEN_STORAGE_KEY, session.token);
-    localStorage.setItem(USER_STORAGE_KEY, JSON.stringify(session.user));
+    clearStoredSession();
+    const storage = rememberMe ? localStorage : sessionStorage;
+    storage.setItem(TOKEN_STORAGE_KEY, session.token);
+    storage.setItem(USER_STORAGE_KEY, JSON.stringify(session.user));
   }
 
   function clearSession() {
     token.value = "";
     user.value = null;
-    localStorage.removeItem(TOKEN_STORAGE_KEY);
-    localStorage.removeItem(USER_STORAGE_KEY);
+    clearStoredSession();
   }
 
-  async function login(username: string, password: string) {
+  async function login(username: string, password: string, rememberMe: boolean) {
     const { data } = await apiClient.post<LoginResponse>("/auth/login", {
       username,
-      password
+      password,
+      rememberMe
     });
 
-    persistSession(data);
+    persistSession(data, rememberMe);
     return data;
   }
 
@@ -54,6 +67,7 @@ export const useAuthStore = defineStore("auth", () => {
       currentPassword,
       newPassword
     });
+    clearSession();
   }
 
   return {
diff --git a/frontend/src/views/LoginView.vue b/frontend/src/views/LoginView.vue
index 5c0d3f6..5fcb738 100644
--- a/frontend/src/views/LoginView.vue
+++ b/frontend/src/views/LoginView.vue
@@ -16,7 +16,8 @@ const { themeMode } = useUiPreferences();
 
 const form = reactive({
   username: "admin",
-  password: ""
+  password: "",
+  rememberMe: false
 });
 
 const currentThemeIcon = computed(() => {
@@ -35,7 +36,7 @@ async function handleLogin() {
   loading.value = true;
 
   try {
-    await authStore.login(form.username, form.password);
+    await authStore.login(form.username, form.password, form.rememberMe);
     ElMessage.success("登录成功");
     await router.push({ name: "dashboard" });
   } catch (error) {
@@ -94,10 +95,12 @@ async function handleLogin() {
           :description="backendMessage"
         />
 
-        <el-form label-position="top" class="login-form" @submit.prevent="handleLogin">
+        <el-form label-position="top" class="login-form" autocomplete="on" @submit.prevent="handleLogin">
           <el-form-item label="用户名">
             <el-input
               v-model="form.username"
+              id="username"
+              name="username"
               :prefix-icon="User"
               autocomplete="username"
               spellcheck="false"
@@ -107,6 +110,8 @@ async function handleLogin() {
           <el-form-item label="密码">
             <el-input
               v-model="form.password"
+              id="password"
+              name="password"
               :prefix-icon="Lock"
               type="password"
               autocomplete="current-password"
@@ -115,7 +120,9 @@ async function handleLogin() {
             />
           </el-form-item>
 
-          <el-button class="login-form__submit" type="primary" :loading="loading" @click="handleLogin">
+          <el-checkbox v-model="form.rememberMe" name="rememberMe">记住登录状态（30 天）</el-checkbox>
+
+          <el-button class="login-form__submit" native-type="submit" type="primary" :loading="loading">
             登录控制台 <el-icon class="el-icon--right"><ArrowRight /></el-icon>
           </el-button>
         </el-form>
diff --git a/frontend/src/views/SettingsView.vue b/frontend/src/views/SettingsView.vue
index b6ca85c..0907c5a 100644
--- a/frontend/src/views/SettingsView.vue
+++ b/frontend/src/views/SettingsView.vue
@@ -691,11 +691,12 @@ async function changePassword() {
   changingPassword.value = true;
   try {
     await authStore.changePassword(pwdForm.currentPassword, pwdForm.newPassword);
-    ElMessage.success("密码已更新");
+    ElMessage.success("密码已更新，请重新登录");
     pwdForm.currentPassword = "";
     pwdForm.newPassword = "";
     pwdForm.confirmPassword = "";
     pwdFormRef.value?.resetFields();
+    await router.push({ name: "login" });
   } catch (error) {
     ElMessage.error(getApiErrorMessage(error, "密码修改失败，请稍后重试。"));
   } finally {
diff --git a/src/LiveRecorder.Application/Abstractions/Persistence/PersistenceContracts.cs b/src/LiveRecorder.Application/Abstractions/Persistence/PersistenceContracts.cs
index 06cb6fe..d0d83d8 100644
--- a/src/LiveRecorder.Application/Abstractions/Persistence/PersistenceContracts.cs
+++ b/src/LiveRecorder.Application/Abstractions/Persistence/PersistenceContracts.cs
@@ -197,6 +197,8 @@ public interface IUserSessionRepository
 
     Task AddAsync(UserSession session, CancellationToken cancellationToken = default);
 
+    Task<IReadOnlyList<UserSession>> ListActiveByUserIdAsync(Guid userId, CancellationToken cancellationToken = default);
+
     void Update(UserSession session);
 }
 
diff --git a/src/LiveRecorder.Application/Models/Auth/AuthModels.cs b/src/LiveRecorder.Application/Models/Auth/AuthModels.cs
index 1f0e441..4ee37d1 100644
--- a/src/LiveRecorder.Application/Models/Auth/AuthModels.cs
+++ b/src/LiveRecorder.Application/Models/Auth/AuthModels.cs
@@ -5,6 +5,8 @@ public sealed class LoginRequest
     public string Username { get; set; } = string.Empty;
 
     public string Password { get; set; } = string.Empty;
+
+    public bool RememberMe { get; set; }
 }
 
 public sealed class AuthenticatedUser
diff --git a/src/LiveRecorder.Application/Services/AuthService.cs b/src/LiveRecorder.Application/Services/AuthService.cs
index 904a635..01b0a03 100644
--- a/src/LiveRecorder.Application/Services/AuthService.cs
+++ b/src/LiveRecorder.Application/Services/AuthService.cs
@@ -43,7 +43,7 @@ public sealed class AuthService : IAuthService
 
         var now = DateTimeOffset.UtcNow;
         var token = Convert.ToHexString(RandomNumberGenerator.GetBytes(32));
-        var expiresAt = now.AddHours(12);
+        var expiresAt = request.RememberMe ? now.AddDays(30) : now.AddHours(12);
         var session = new UserSession(user.Id, token, expiresAt, now);
 
         await _userSessionRepository.AddAsync(session, cancellationToken);
@@ -137,6 +137,12 @@ public sealed class AuthService : IAuthService
 
         user.UpdatePassword(PasswordHasher.Hash(request.NewPassword));
         _userAccountRepository.Update(user);
+        var now = DateTimeOffset.UtcNow;
+        foreach (var session in await _userSessionRepository.ListActiveByUserIdAsync(userId, cancellationToken))
+        {
+            session.Revoke(now);
+            _userSessionRepository.Update(session);
+        }
         await _unitOfWork.SaveChangesAsync(cancellationToken);
     }
 }
diff --git a/src/LiveRecorder.Domain/Entities/RecordResult.cs b/src/LiveRecorder.Domain/Entities/RecordResult.cs
index 35ed093..15c2b1b 100644
--- a/src/LiveRecorder.Domain/Entities/RecordResult.cs
+++ b/src/LiveRecorder.Domain/Entities/RecordResult.cs
@@ -103,6 +103,15 @@ public class RecordResult
         DeletedLocalFilesAfterUpload = false;
     }
 
+    public void ResetRemoteArtifactsForReplacement(DateTimeOffset updatedAt)
+    {
+        RemoteVideoPath = null;
+        RemoteDanmakuPath = null;
+        LastUploadedAt = updatedAt;
+        UploadErrorMessage = null;
+        DeletedLocalFilesAfterUpload = false;
+    }
+
     public void MarkUploadWaitingRetry(string provider, string? errorMessage, DateTimeOffset updatedAt)
     {
         UploadStatus = RecordArtifactUploadStatus.WaitingRetry;
diff --git a/src/LiveRecorder.Domain/Entities/RecordUploadJob.cs b/src/LiveRecorder.Domain/Entities/RecordUploadJob.cs
index 454b887..a11e847 100644
--- a/src/LiveRecorder.Domain/Entities/RecordUploadJob.cs
+++ b/src/LiveRecorder.Domain/Entities/RecordUploadJob.cs
@@ -76,6 +76,14 @@ public sealed class RecordUploadJob
 
     public string? TransferTargetPath { get; private set; }
 
+    public string? PendingCleanupVideoPath { get; private set; }
+
+    public string? PendingCleanupDanmakuPath { get; private set; }
+
+    public string? CleanupErrorMessage { get; private set; }
+
+    public DateTimeOffset? NextCleanupAttemptAt { get; private set; }
+
     public DateTimeOffset? NextAttemptAt { get; private set; }
 
     public DateTimeOffset? VerificationStartedAt { get; private set; }
@@ -127,6 +135,69 @@ public sealed class RecordUploadJob
         UpdatedAt = requestedAt;
     }
 
+    public bool HasArtifactDrift(
+        string providerEndpoint,
+        string sourceVideoPath,
+        string targetVideoPath,
+        long videoSizeBytes,
+        string? sourceDanmakuPath,
+        string? targetDanmakuPath,
+        long? danmakuSizeBytes) =>
+        !string.Equals(ProviderEndpoint, NormalizeRequired(providerEndpoint), StringComparison.Ordinal) ||
+        !string.Equals(SourceVideoPath, NormalizeRequired(sourceVideoPath), StringComparison.Ordinal) ||
+        !string.Equals(TargetVideoPath, NormalizeRequired(targetVideoPath), StringComparison.Ordinal) ||
+        VideoSizeBytes != Math.Max(0, videoSizeBytes) ||
+        !string.Equals(SourceDanmakuPath, NormalizeNullable(sourceDanmakuPath), StringComparison.Ordinal) ||
+        !string.Equals(TargetDanmakuPath, NormalizeNullable(targetDanmakuPath), StringComparison.Ordinal) ||
+        DanmakuSizeBytes != (danmakuSizeBytes.HasValue ? Math.Max(0, danmakuSizeBytes.Value) : null);
+
+    public void RefreshForArtifactDrift(
+        string providerEndpoint,
+        string sourceVideoPath,
+        string targetVideoPath,
+        long videoSizeBytes,
+        string? sourceDanmakuPath,
+        string? targetDanmakuPath,
+        long? danmakuSizeBytes,
+        bool deleteLocalFilesAfterUpload,
+        string? uploadedVideoPath,
+        string? uploadedDanmakuPath,
+        DateTimeOffset requestedAt)
+    {
+        TrackCleanupPath(uploadedVideoPath, isVideo: true, targetVideoPath);
+        TrackCleanupPath(uploadedDanmakuPath, isVideo: false, targetDanmakuPath);
+        RefreshRequest(
+            providerEndpoint,
+            sourceVideoPath,
+            targetVideoPath,
+            videoSizeBytes,
+            sourceDanmakuPath,
+            targetDanmakuPath,
+            danmakuSizeBytes,
+            deleteLocalFilesAfterUpload,
+            requestedAt);
+    }
+
+    public bool HasPendingRemoteCleanup =>
+        !string.IsNullOrWhiteSpace(PendingCleanupVideoPath) ||
+        !string.IsNullOrWhiteSpace(PendingCleanupDanmakuPath);
+
+    public void MarkRemoteCleanupFailed(string errorMessage, DateTimeOffset nextAttemptAt, DateTimeOffset updatedAt)
+    {
+        CleanupErrorMessage = NormalizeNullable(errorMessage);
+        NextCleanupAttemptAt = nextAttemptAt;
+        UpdatedAt = updatedAt;
+    }
+
+    public void MarkRemoteCleanupCompleted(DateTimeOffset updatedAt)
+    {
+        PendingCleanupVideoPath = null;
+        PendingCleanupDanmakuPath = null;
+        CleanupErrorMessage = null;
+        NextCleanupAttemptAt = null;
+        UpdatedAt = updatedAt;
+    }
+
     public void MarkProcessing(DateTimeOffset updatedAt)
     {
         Status = RecordArtifactUploadStatus.Uploading;
@@ -354,6 +425,24 @@ public sealed class RecordUploadJob
         return Math.Clamp(VideoSizeBytes * 100d / totalSize, 0, 100);
     }
 
+    private void TrackCleanupPath(string? uploadedPath, bool isVideo, string? replacementPath)
+    {
+        var normalized = NormalizeNullable(uploadedPath);
+        if (normalized is null || string.Equals(normalized, replacementPath, StringComparison.Ordinal))
+        {
+            return;
+        }
+
+        if (isVideo)
+        {
+            PendingCleanupVideoPath = normalized;
+        }
+        else
+        {
+            PendingCleanupDanmakuPath = normalized;
+        }
+    }
+
     private static string NormalizeRequired(string value)
     {
         if (string.IsNullOrWhiteSpace(value))
diff --git a/src/LiveRecorder.Infrastructure/Persistence/LiveRecorderDbContext.cs b/src/LiveRecorder.Infrastructure/Persistence/LiveRecorderDbContext.cs
index 36f8969..525c35d 100644
--- a/src/LiveRecorder.Infrastructure/Persistence/LiveRecorderDbContext.cs
+++ b/src/LiveRecorder.Infrastructure/Persistence/LiveRecorderDbContext.cs
@@ -142,6 +142,9 @@ public sealed class LiveRecorderDbContext : DbContext, IUnitOfWork
             builder.Property(static x => x.ExternalTaskId).HasMaxLength(128);
             builder.Property(static x => x.ExternalTaskType).HasMaxLength(32);
             builder.Property(static x => x.TransferTargetPath).HasMaxLength(2048);
+            builder.Property(static x => x.PendingCleanupVideoPath).HasMaxLength(2048);
+            builder.Property(static x => x.PendingCleanupDanmakuPath).HasMaxLength(2048);
+            builder.Property(static x => x.CleanupErrorMessage).HasMaxLength(4096);
             builder.Property(static x => x.ErrorMessage).HasMaxLength(4096);
             builder.HasIndex(static x => x.RecordTaskId).IsUnique();
             builder.HasIndex(static x => new { x.Status, x.NextAttemptAt, x.RequestedAt });
diff --git a/src/LiveRecorder.Infrastructure/Persistence/Migrations/20260813214000_AddUploadReplacementCleanup.cs b/src/LiveRecorder.Infrastructure/Persistence/Migrations/20260813214000_AddUploadReplacementCleanup.cs
new file mode 100644
index 0000000..a30393a
--- /dev/null
+++ b/src/LiveRecorder.Infrastructure/Persistence/Migrations/20260813214000_AddUploadReplacementCleanup.cs
@@ -0,0 +1,28 @@
+using LiveRecorder.Infrastructure.Persistence;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace LiveRecorder.Infrastructure.Persistence.Migrations;
+
+[DbContext(typeof(LiveRecorderDbContext))]
+[Migration("20260813214000_AddUploadReplacementCleanup")]
+public sealed class AddUploadReplacementCleanup : Migration
+{
+    protected override void Up(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.AddColumn<string>("CleanupErrorMessage", "RecordUploadJobs", type: "character varying(4096)", maxLength: 4096, nullable: true);
+        migrationBuilder.AddColumn<DateTimeOffset>("NextCleanupAttemptAt", "RecordUploadJobs", type: "timestamp with time zone", nullable: true);
+        migrationBuilder.AddColumn<string>("PendingCleanupDanmakuPath", "RecordUploadJobs", type: "character varying(2048)", maxLength: 2048, nullable: true);
+        migrationBuilder.AddColumn<string>("PendingCleanupVideoPath", "RecordUploadJobs", type: "character varying(2048)", maxLength: 2048, nullable: true);
+    }
+
+    protected override void Down(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.DropColumn("CleanupErrorMessage", "RecordUploadJobs");
+        migrationBuilder.DropColumn("NextCleanupAttemptAt", "RecordUploadJobs");
+        migrationBuilder.DropColumn("PendingCleanupDanmakuPath", "RecordUploadJobs");
+        migrationBuilder.DropColumn("PendingCleanupVideoPath", "RecordUploadJobs");
+    }
+}
diff --git a/src/LiveRecorder.Infrastructure/Persistence/Migrations/LiveRecorderDbContextModelSnapshot.cs b/src/LiveRecorder.Infrastructure/Persistence/Migrations/LiveRecorderDbContextModelSnapshot.cs
index 18a4553..bdd0f97 100644
--- a/src/LiveRecorder.Infrastructure/Persistence/Migrations/LiveRecorderDbContextModelSnapshot.cs
+++ b/src/LiveRecorder.Infrastructure/Persistence/Migrations/LiveRecorderDbContextModelSnapshot.cs
@@ -542,6 +542,10 @@ namespace LiveRecorder.Infrastructure.Persistence.Migrations
                     b.Property<DateTimeOffset?>("CompletedAt")
                         .HasColumnType("timestamp with time zone");
 
+                    b.Property<string>("CleanupErrorMessage")
+                        .HasMaxLength(4096)
+                        .HasColumnType("character varying(4096)");
+
                     b.Property<int>("CurrentArtifact")
                         .HasColumnType("integer");
 
@@ -572,6 +576,17 @@ namespace LiveRecorder.Infrastructure.Persistence.Migrations
                     b.Property<DateTimeOffset?>("NextAttemptAt")
                         .HasColumnType("timestamp with time zone");
 
+                    b.Property<DateTimeOffset?>("NextCleanupAttemptAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("PendingCleanupDanmakuPath")
+                        .HasMaxLength(2048)
+                        .HasColumnType("character varying(2048)");
+
+                    b.Property<string>("PendingCleanupVideoPath")
+                        .HasMaxLength(2048)
+                        .HasColumnType("character varying(2048)");
+
                     b.Property<double>("ProgressPercent")
                         .HasColumnType("double precision");
 
diff --git a/src/LiveRecorder.Infrastructure/Persistence/Repositories/Repositories.cs b/src/LiveRecorder.Infrastructure/Persistence/Repositories/Repositories.cs
index 604cf66..a5a4b86 100644
--- a/src/LiveRecorder.Infrastructure/Persistence/Repositories/Repositories.cs
+++ b/src/LiveRecorder.Infrastructure/Persistence/Repositories/Repositories.cs
@@ -757,5 +757,10 @@ public sealed class UserSessionRepository : IUserSessionRepository
     public Task AddAsync(UserSession session, CancellationToken cancellationToken = default) =>
         _dbContext.UserSessions.AddAsync(session, cancellationToken).AsTask();
 
+    public async Task<IReadOnlyList<UserSession>> ListActiveByUserIdAsync(Guid userId, CancellationToken cancellationToken = default) =>
+        await _dbContext.UserSessions
+            .Where(item => item.UserAccountId == userId && item.RevokedAt == null)
+            .ToListAsync(cancellationToken);
+
     public void Update(UserSession session) => _dbContext.UserSessions.Update(session);
 }
diff --git a/src/LiveRecorder.Infrastructure/Services/OpenListClient.cs b/src/LiveRecorder.Infrastructure/Services/OpenListClient.cs
index 503b138..6e05279 100644
--- a/src/LiveRecorder.Infrastructure/Services/OpenListClient.cs
+++ b/src/LiveRecorder.Infrastructure/Services/OpenListClient.cs
@@ -60,6 +60,11 @@ public interface IOpenListClient
         string sourcePath,
         string targetDirectory,
         CancellationToken cancellationToken = default);
+
+    Task DeleteFileAsync(
+        OpenListConnectionRequest connection,
+        string path,
+        CancellationToken cancellationToken = default);
 }
 
 public sealed record OpenListObjectInfo(
@@ -540,6 +545,26 @@ public sealed class OpenListClient : IOpenListClient
         EnsureSuccess(envelope, $"OpenList move '{sourcePath}' to '{targetDirectory}'");
     }
 
+    public async Task DeleteFileAsync(
+        OpenListConnectionRequest connection,
+        string path,
+        CancellationToken cancellationToken = default)
+    {
+        path = NormalizePath(path);
+        var existing = await TryGetObjectAsync(connection, path, cancellationToken);
+        if (existing is null) return;
+        if (existing.IsDirectory) throw new InvalidOperationException($"OpenList cleanup path is a directory: '{path}'.");
+
+        var envelope = await SendAuthorizedAsync(
+            connection,
+            () => CreateJsonRequest(
+                HttpMethod.Post,
+                "/api/fs/remove",
+                new { dir = GetDirectoryName(path), names = new[] { GetFileName(path) } }),
+            cancellationToken);
+        EnsureSuccess(envelope, $"OpenList remove '{path}'");
+    }
+
     public static string NormalizeBaseUrl(string baseUrl)
     {
         if (!Uri.TryCreate(baseUrl?.Trim(), UriKind.Absolute, out var uri) ||
diff --git a/src/LiveRecorder.Infrastructure/Services/OpenListUploadQueueService.cs b/src/LiveRecorder.Infrastructure/Services/OpenListUploadQueueService.cs
index 8cc819f..e724371 100644
--- a/src/LiveRecorder.Infrastructure/Services/OpenListUploadQueueService.cs
+++ b/src/LiveRecorder.Infrastructure/Services/OpenListUploadQueueService.cs
@@ -316,6 +316,24 @@ public sealed class OpenListUploadQueueService
             return false;
         }
 
+        var cleanupJob = await _dbContext.RecordUploadJobs
+            .Include(static item => item.RecordTask)
+            .Where(item => item.Status == RecordArtifactUploadStatus.Succeeded &&
+                           (item.PendingCleanupVideoPath != null || item.PendingCleanupDanmakuPath != null) &&
+                           (!item.NextCleanupAttemptAt.HasValue || item.NextCleanupAttemptAt <= now))
+            .OrderBy(static item => item.NextCleanupAttemptAt)
+            .FirstOrDefaultAsync(cancellationToken);
+        if (cleanupJob is not null)
+        {
+            await TryCleanupReplacedRemoteArtifactsAsync(cleanupJob, new OpenListConnectionRequest
+            {
+                BaseUrl = cleanupJob.ProviderEndpoint,
+                Username = settings.OpenListUpload.Username,
+                Password = settings.OpenListUpload.Password
+            }, cancellationToken);
+            return true;
+        }
+
         var jobs = _dbContext.RecordUploadJobs
             .Include(static item => item.RecordTask)
             .ThenInclude(static item => item!.Result)
@@ -380,6 +398,11 @@ public sealed class OpenListUploadQueueService
             return true;
         }
 
+        if (await RefreshJobForCurrentArtifactsAsync(job, result, settings, connection, cancellationToken))
+        {
+            return true;
+        }
+
         var validationError = await GetUploadValidationErrorAsync(
             job.RecordTask,
             NormalizeAbsolutePath(result.FilePath),
@@ -510,14 +533,35 @@ public sealed class OpenListUploadQueueService
                 now);
             await _dbContext.RecordUploadJobs.AddAsync(job, cancellationToken);
         }
-        else if (job.Status == RecordArtifactUploadStatus.Succeeded)
+        else if (job.Status == RecordArtifactUploadStatus.Succeeded &&
+                 !job.HasArtifactDrift(endpoint, sourceVideoPath, targetVideoPath, videoSizeBytes, sourceDanmakuPath, targetDanmakuPath, danmakuSizeBytes))
         {
             return SuccessFromExisting(recordTaskId, result);
         }
-        else if (job.Status is RecordArtifactUploadStatus.Queued or RecordArtifactUploadStatus.Uploading or RecordArtifactUploadStatus.WaitingRetry)
+        else if (job.Status is RecordArtifactUploadStatus.Queued or RecordArtifactUploadStatus.Uploading or RecordArtifactUploadStatus.WaitingRetry &&
+                 !job.HasArtifactDrift(endpoint, sourceVideoPath, targetVideoPath, videoSizeBytes, sourceDanmakuPath, targetDanmakuPath, danmakuSizeBytes))
         {
             return QueuedResult(recordTaskId, result, job, "该分片已在 OpenList 上传队列中。");
         }
+        else if (job.HasArtifactDrift(endpoint, sourceVideoPath, targetVideoPath, videoSizeBytes, sourceDanmakuPath, targetDanmakuPath, danmakuSizeBytes))
+        {
+            if (!string.IsNullOrWhiteSpace(job.ExternalTaskId))
+            {
+                var connection = new OpenListConnectionRequest
+                {
+                    BaseUrl = endpoint,
+                    Username = settings.OpenListUpload.Username,
+                    Password = settings.OpenListUpload.Password
+                };
+                _ = await _openListClient.TryCancelCopyTaskAsync(connection, job.ExternalTaskId, cancellationToken);
+            }
+            job.RefreshForArtifactDrift(
+                endpoint, sourceVideoPath, targetVideoPath, videoSizeBytes,
+                sourceDanmakuPath, targetDanmakuPath, danmakuSizeBytes,
+                settings.DeleteLocalFilesAfterUpload,
+                result.RemoteVideoPath, result.RemoteDanmakuPath, now);
+            result.ResetRemoteArtifactsForReplacement(now);
+        }
         else
         {
             job.RefreshRequest(
@@ -911,6 +955,14 @@ public sealed class OpenListUploadQueueService
             now);
         await _dbContext.SaveChangesAsync(cancellationToken);
 
+        var settings = await _settingsService.GetAsync(cancellationToken);
+        await TryCleanupReplacedRemoteArtifactsAsync(job, new OpenListConnectionRequest
+        {
+            BaseUrl = job.ProviderEndpoint,
+            Username = settings.OpenListUpload.Username,
+            Password = settings.OpenListUpload.Password
+        }, cancellationToken);
+
         await _systemLogService.WriteAsync(
             cleanupWarning is null ? SystemLogLevel.Info : SystemLogLevel.Warning,
             "Upload",
@@ -923,6 +975,81 @@ public sealed class OpenListUploadQueueService
             cancellationToken: cancellationToken);
     }
 
+    private async Task<bool> RefreshJobForCurrentArtifactsAsync(
+        RecordUploadJob job,
+        RecordResult result,
+        SystemSettingsDto settings,
+        OpenListConnectionRequest connection,
+        CancellationToken cancellationToken)
+    {
+        var localVideoPath = NormalizeAbsolutePath(result.FilePath);
+        if (!File.Exists(localVideoPath)) return false;
+        var outputRoot = Path.GetFullPath(settings.OutputRoot, AppContext.BaseDirectory);
+        var videoRelativePath = GetSafeRelativePath(outputRoot, localVideoPath);
+        var sourceVideoPath = OpenListClient.CombinePath(settings.OpenListUpload.SourcePath, videoRelativePath);
+        var targetVideoPath = OpenListClient.CombinePath(settings.OpenListUpload.DestinationPath, videoRelativePath);
+        var videoSizeBytes = new FileInfo(localVideoPath).Length;
+        var localDanmakuPath = NormalizeNullableAbsolutePath(result.DanmakuFilePath);
+        var hasDanmaku = !string.IsNullOrWhiteSpace(localDanmakuPath) && File.Exists(localDanmakuPath);
+        var sourceDanmakuPath = hasDanmaku
+            ? OpenListClient.CombinePath(settings.OpenListUpload.SourcePath, GetSafeRelativePath(outputRoot, localDanmakuPath!))
+            : null;
+        var targetDanmakuPath = hasDanmaku
+            ? OpenListClient.CombinePath(settings.OpenListUpload.DestinationPath, GetSafeRelativePath(outputRoot, localDanmakuPath!))
+            : null;
+        var danmakuSizeBytes = hasDanmaku ? new FileInfo(localDanmakuPath!).Length : (long?)null;
+        var endpoint = OpenListClient.NormalizeBaseUrl(settings.OpenListUpload.BaseUrl);
+        if (!job.HasArtifactDrift(endpoint, sourceVideoPath, targetVideoPath, videoSizeBytes, sourceDanmakuPath, targetDanmakuPath, danmakuSizeBytes)) return false;
+
+        if (!string.IsNullOrWhiteSpace(job.ExternalTaskId))
+        {
+            _ = await _openListClient.TryCancelCopyTaskAsync(connection, job.ExternalTaskId, cancellationToken);
+        }
+
+        var now = DateTimeOffset.UtcNow;
+        job.RefreshForArtifactDrift(
+            endpoint, sourceVideoPath, targetVideoPath, videoSizeBytes,
+            sourceDanmakuPath, targetDanmakuPath, danmakuSizeBytes,
+            settings.DeleteLocalFilesAfterUpload,
+            result.RemoteVideoPath, result.RemoteDanmakuPath, now);
+        result.ResetRemoteArtifactsForReplacement(now);
+        result.MarkUploadQueued("openlist", now);
+        await _dbContext.SaveChangesAsync(cancellationToken);
+        return true;
+    }
+
+    private async Task TryCleanupReplacedRemoteArtifactsAsync(
+        RecordUploadJob job,
+        OpenListConnectionRequest connection,
+        CancellationToken cancellationToken)
+    {
+        if (!job.HasPendingRemoteCleanup) return;
+        var settings = await _settingsService.GetAsync(cancellationToken);
+        var destinationRoot = OpenListClient.NormalizePath(settings.OpenListUpload.DestinationPath).TrimEnd('/') + "/";
+        try
+        {
+            foreach (var path in new[] { job.PendingCleanupVideoPath, job.PendingCleanupDanmakuPath }.Where(static path => !string.IsNullOrWhiteSpace(path)))
+            {
+                var normalized = OpenListClient.NormalizePath(path!);
+                if (!normalized.StartsWith(destinationRoot, StringComparison.Ordinal) ||
+                    string.Equals(normalized, job.TargetVideoPath, StringComparison.Ordinal) ||
+                    string.Equals(normalized, job.TargetDanmakuPath, StringComparison.Ordinal))
+                {
+                    throw new InvalidOperationException($"Refusing unsafe OpenList cleanup path: '{normalized}'.");
+                }
+                await _openListClient.DeleteFileAsync(connection, normalized, cancellationToken);
+            }
+            job.MarkRemoteCleanupCompleted(DateTimeOffset.UtcNow);
+        }
+        catch (Exception ex)
+        {
+            job.MarkRemoteCleanupFailed(ex.Message, DateTimeOffset.UtcNow.Add(CleanupRetryDelay), DateTimeOffset.UtcNow);
+            await _systemLogService.WriteAsync(SystemLogLevel.Warning, "Upload", "OpenList replaced artifact cleanup will retry.", ex.Message,
+                job.RecordTask?.LiveRoomId, job.RecordTask?.RecordSessionId, job.RecordTaskId, cancellationToken);
+        }
+        await _dbContext.SaveChangesAsync(cancellationToken);
+    }
+
     private async Task ScheduleRetryOrFailAsync(
         RecordUploadJob job,
         RecordResult result,
diff --git a/tests/LiveRecorder.Tests/AuthServiceTests.cs b/tests/LiveRecorder.Tests/AuthServiceTests.cs
new file mode 100644
index 0000000..587f61d
--- /dev/null
+++ b/tests/LiveRecorder.Tests/AuthServiceTests.cs
@@ -0,0 +1,38 @@
+using LiveRecorder.Application.Common;
+using LiveRecorder.Application.Models.Auth;
+using LiveRecorder.Application.Services;
+using LiveRecorder.Domain.Entities;
+using LiveRecorder.Infrastructure.Persistence;
+using LiveRecorder.Infrastructure.Persistence.Repositories;
+using Microsoft.EntityFrameworkCore;
+
+namespace LiveRecorder.Tests;
+
+public sealed class AuthServiceTests
+{
+    [Theory]
+    [InlineData(false, 12)]
+    [InlineData(true, 720)]
+    public async Task Login_UsesExpectedSessionLifetime(bool rememberMe, int expectedHours)
+    {
+        var options = new DbContextOptionsBuilder<LiveRecorderDbContext>()
+            .UseInMemoryDatabase($"auth-{Guid.NewGuid():N}")
+            .Options;
+        await using var context = new LiveRecorderDbContext(options);
+        var user = new UserAccount("admin", "Admin", PasswordHasher.Hash("secret123"), DateTimeOffset.UtcNow);
+        context.UserAccounts.Add(user);
+        await context.SaveChangesAsync();
+        var service = new AuthService(new UserAccountRepository(context), new UserSessionRepository(context), context);
+
+        var before = DateTimeOffset.UtcNow;
+        var response = await service.LoginAsync(new LoginRequest
+        {
+            Username = "admin",
+            Password = "secret123",
+            RememberMe = rememberMe
+        });
+        var after = DateTimeOffset.UtcNow;
+
+        Assert.InRange(response.ExpiresAt, before.AddHours(expectedHours), after.AddHours(expectedHours));
+    }
+}
diff --git a/tests/LiveRecorder.Tests/OpenListUploadTests.cs b/tests/LiveRecorder.Tests/OpenListUploadTests.cs
index 35d63a9..3469913 100644
--- a/tests/LiveRecorder.Tests/OpenListUploadTests.cs
+++ b/tests/LiveRecorder.Tests/OpenListUploadTests.cs
@@ -434,6 +434,28 @@ public sealed class OpenListUploadTests
         Assert.Equal(1, await fixture.Context.RecordUploadJobs.CountAsync());
     }
 
+    [Fact]
+    public async Task Queue_RefreshesQueuedJobWhenConsolidationChangesResultPath()
+    {
+        await using var fixture = await QueueFixture.CreateAsync();
+        await fixture.Queue.EnqueueAsync(fixture.RecordTaskId);
+        var originalJob = await fixture.Context.RecordUploadJobs.AsNoTracking().SingleAsync();
+        var result = await fixture.Context.RecordResults.SingleAsync();
+        var mergedPath = Path.Combine(Path.GetDirectoryName(result.FilePath)!, "segment-merged.mp4");
+        await File.WriteAllBytesAsync(mergedPath, Encoding.UTF8.GetBytes("merged-video-content"));
+        result.Update(mergedPath, new FileInfo(mergedPath).Length, 60, null, 0, RecordTaskStatus.Completed, null);
+        await fixture.Context.SaveChangesAsync();
+
+        Assert.True(await fixture.Queue.ProcessNextAsync());
+
+        fixture.Context.ChangeTracker.Clear();
+        var refreshedJob = await fixture.Context.RecordUploadJobs.SingleAsync();
+        Assert.Equal("/source/Douyin/2026/08/01/主播/segment-merged.mp4", refreshedJob.SourceVideoPath);
+        Assert.Equal("/destination/Douyin/2026/08/01/主播/segment-merged.mp4", refreshedJob.TargetVideoPath);
+        Assert.Equal(RecordArtifactUploadStatus.Queued, refreshedJob.Status);
+        Assert.NotEqual(originalJob.SourceVideoPath, refreshedJob.SourceVideoPath);
+    }
+
     [Fact]
     public async Task Queue_RenamesSameNameConflictWithoutOverwriting()
     {
@@ -906,5 +928,15 @@ public sealed class OpenListUploadTests
             Operations.Add($"move:{sourcePath}->{targetDirectory}");
             return Task.CompletedTask;
         }
+
+        public Task DeleteFileAsync(
+            OpenListConnectionRequest connection,
+            string path,
+            CancellationToken cancellationToken = default)
+        {
+            Operations.Add($"delete:{path}");
+            Objects.Remove(path);
+            return Task.CompletedTask;
+        }
     }
 }