fix(web): 控制台界面细节与 uhd_web 控件规范对齐

- 顶栏搜索移进右侧玻璃胶囊;输入框改淡玻璃(边线 0.46 → 0.16,悬停加深,聚焦 / 出错保留光晕)
- 新增 SegmentedControl(滑动 seg-thumb),替换站点、下载、订阅、文件、智能体列表及对话框里的实心选中块;Tabs 改为同一枚滑块
- 开关型按钮统一 outline + aria-pressed 选中外观;页头 / 工具栏次操作描边、图标钮描边圆;文件排序改 Select;下载总速度加标签
- 分页一页放得下时只留总数、空列表不渲染、按容器宽度收起按钮
- 运行状态存储区重排;智能体列表页与会话页共用外壳路由,标题与左栏不再重挂载
- 站点卡片「⋯」不再单独换行;设置导航、状态计数、多选条件改玻璃选中态

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Cxwgnn2pbzQ7rXv3rq7fei

apps/web/app/routes.ts

@@ -32,8 +32,11 @@ export default [
       route("downloads/:id", "routes/console/downloads.$id.tsx"),
       route("tasks", "routes/console/tasks.tsx"),
       route("tasks/:id", "routes/console/tasks.$id.tsx"),
-      route("agent", "routes/console/agent.tsx"),
-      route("agent/:runId", "routes/console/agent.$runId.tsx"),
+      // 智能体:列表页与会话页共用外壳(标题 + 左栏会话列表),切换时只换右栏
+      route("agent", "routes/console/agent.tsx", [
+        index("routes/console/agent._index.tsx"),
+        route(":runId", "routes/console/agent.$runId.tsx"),
+      ]),
       route("engine", "routes/console/engine.tsx"),
       route("engine/:runId", "routes/console/engine.$runId.tsx"),
       route("audit", "routes/console/audit.tsx"),