feat: add Chinese UI, Responses models, and mirrored Windows setup

Localize the web console and persist custom model and capability settings.
Use OpenAI Responses exclusively and move runtime limits into environment configuration.
Bootstrap uv and the virtual environment on Windows, support optional China mirrors,
and package source distributions without environments, build output, or credentials.

Update regression tests and repository quality checks for the new behavior.

apps/showcase_ui/src/app/components/chat-interface/chat-interface.component.html

@@ -25,7 +25,7 @@ limitations under the License.
         (click)="agentService.activeTab.set('tasks')"
         >
         <span class="material-symbols-outlined tab-icon">list_alt</span>
-        <span class="tab-text">Task Queue</span>
+        <span class="tab-text">任务队列</span>
       </button>
       <button
         class="tab-selector-btn"
@@ -33,7 +33,7 @@ limitations under the License.
         (click)="agentService.activeTab.set('notes')"
         >
         <span class="material-symbols-outlined tab-icon">description</span>
-        <span class="tab-text">Notes & Plans</span>
+        <span class="tab-text">笔记与计划</span>
       </button>
     </div>
 
@@ -42,8 +42,8 @@ limitations under the License.
         <button
           class="btn-clear-history"
           (click)="clearHistory()"
-          title="Clear all tasks and history"
-          aria-label="Clear all tasks and history"
+          title="清空所有任务与历史"
+          aria-label="清空所有任务与历史"
           [disabled]="isSubmitting()"
           >
           <span class="material-symbols-outlined">delete</span>
@@ -62,7 +62,8 @@ limitations under the License.
       </div>
       @if (activeQueue().length === 0) {
         <div class="empty-section-placeholder">
-          No active or queued tasks.
+
+          没有正在执行或排队的任务。
         </div>
       }
       @for (session of activeQueue(); track trackSession($index, session)) {
@@ -77,7 +78,7 @@ limitations under the License.
               @if (getTaskStatus(session) === 'running') {
                 <span class="status-dot"></span>
               }
-              {{ getTaskStatus(session) | uppercase }}
+              {{ getTaskStatus(session) | uiLabel }}
             </span>
             <div class="task-card-header-actions">
               @if (getDeviceSerial(session)) {
@@ -95,8 +96,8 @@ limitations under the License.
                   type="button"
                   class="btn-stop-card"
                   (click)="stopTask(session.session_id, $event)"
-                  title="Stop this task"
-                  aria-label="Stop this task"
+                  title="停止此任务"
+                  aria-label="停止此任务"
                   >
                   <span class="material-symbols-outlined">stop_circle</span>
                 </button>
@@ -106,8 +107,8 @@ limitations under the License.
                   type="button"
                   class="btn-delete-card"
                   (click)="deleteTask(session.session_id, $event)"
-                  title="Delete this task"
-                  aria-label="Delete this task"
+                  title="删除此任务"
+                  aria-label="删除此任务"
                   [disabled]="isSubmitting()"
                   >
                   <span class="material-symbols-outlined">delete</span>
@@ -116,7 +117,7 @@ limitations under the License.
             </div>
           </div>
           <div class="task-goal" title="{{ session.initial_goal }}">
-            {{ session.initial_goal || 'Unnamed Task' }}
+            {{ session.initial_goal || '未命名任务' }}
           </div>
           <div class="task-card-footer">
             <span class="task-id" [title]="session.session_id">ID: {{ session.session_id }}</span>
@@ -132,7 +133,8 @@ limitations under the License.
         <div class="history-list-wrapper">
           @if (historyTasks().length === 0) {
             <div class="empty-section-placeholder">
-              No past tasks.
+
+              暂无历史任务。
             </div>
           }
           @for (session of historyTasks(); track trackSession($index, session)) {
@@ -147,7 +149,7 @@ limitations under the License.
                   @if (getTaskStatus(session) === 'running') {
                     <span class="status-dot"></span>
                   }
-                  {{ getTaskStatus(session) | uppercase }}
+                  {{ getTaskStatus(session) | uiLabel }}
                 </span>
                 <div class="task-card-header-actions">
                   @if (getDeviceSerial(session)) {
@@ -165,8 +167,8 @@ limitations under the License.
                       type="button"
                       class="btn-delete-card"
                       (click)="deleteTask(session.session_id, $event)"
-                      title="Delete this task"
-                      aria-label="Delete this task"
+                      title="删除此任务"
+                      aria-label="删除此任务"
                       [disabled]="isSubmitting()"
                       >
                       <span class="material-symbols-outlined">delete</span>
@@ -175,7 +177,7 @@ limitations under the License.
                 </div>
               </div>
               <div class="task-goal" title="{{ session.initial_goal }}">
-                {{ session.initial_goal || 'Unnamed Task' }}
+                {{ session.initial_goal || '未命名任务' }}
               </div>
               <div class="task-card-footer">
                 <span class="task-id" [title]="session.session_id">ID: {{ session.session_id }}</span>
@@ -212,8 +214,8 @@ limitations under the License.
             <div class="empty-notes-icon">
               <span class="material-symbols-outlined">description</span>
             </div>
-            <h4 class="empty-notes-title">No Notes & Plans</h4>
-            <p class="empty-notes-subtitle">No notes or structured plans were recorded for this session.</p>
+            <h4 class="empty-notes-title">暂无笔记与计划</h4>
+            <p class="empty-notes-subtitle">此会话尚未记录笔记或结构化计划。</p>
           </div>
         }
         <!-- Notes Content Viewer (Clean card blocks matching the second screenshot style) -->
@@ -377,4 +379,3 @@ limitations under the License.
     }
   </main>
 </div>
-