fix: localize home and split auth setup flow

public/login.html

@@ -11,10 +11,10 @@
       <section class="hero hero-compact">
         <div>
           <p class="eyebrow">Authentication</p>
-          <h1 id="authHeading">系统登录</h1>
+          <h1>系统登录</h1>
         </div>
-        <p id="authLead" class="lead">
-          登录后才能访问数据源管理、增强任务、视频预览和文件下载。首次启用时，需要先设置管理员账号。
+        <p class="lead">
+          登录后才能访问数据源管理、增强任务、视频预览和文件下载。
         </p>
       </section>
 
@@ -24,14 +24,14 @@
         <div class="panel stack-gap">
           <div class="panel-header">
             <div>
-              <p class="section-label">Account</p>
-              <h2 id="authFormTitle">正在检查系统状态...</h2>
+              <p class="section-label">Login</p>
+              <h2>请输入管理员账号密码</h2>
             </div>
           </div>
 
           <div id="authSummary" class="summary-card">正在读取认证状态...</div>
 
-          <form id="loginForm" class="secret-form" hidden>
+          <form id="loginForm" class="secret-form">
             <label>
               <span>用户名</span>
               <input id="loginUsername" name="username" type="text" autocomplete="username">
@@ -44,24 +44,6 @@
               <button id="loginButton" class="primary-button" type="submit">登录</button>
             </div>
           </form>
-
-          <form id="setupForm" class="secret-form" hidden>
-            <label>
-              <span>管理员用户名</span>
-              <input id="setupUsername" name="username" type="text" autocomplete="username">
-            </label>
-            <label>
-              <span>管理员密码</span>
-              <input id="setupPassword" name="password" type="password" autocomplete="new-password">
-            </label>
-            <label>
-              <span>再次输入密码</span>
-              <input id="setupPasswordConfirm" name="passwordConfirm" type="password" autocomplete="new-password">
-            </label>
-            <div class="form-actions">
-              <button id="setupButton" class="primary-button" type="submit">完成初始化并登录</button>
-            </div>
-          </form>
         </div>
       </section>
     </main>