feat(models): add models configuration page with provider management and token usage

- Replace "Task Center" with "Models" in sidebar and routing
- Add new models configuration page with AI provider account management
- Implement token usage history with filtering, grouping, and visualization
- Create provider store with Pinia for state management
- Add internationalization support for models feature
- Include development analysis documentation for feature implementation

src/router/index.ts

@@ -18,9 +18,9 @@ const routes = [
     meta: { requiresAuth: true },
   },
   {
-    path: "/task",
-    component: () => import("@src/pages/task/index.vue"),
-    name: "Task",
+    path: "/agents",
+    component: () => import("@src/pages/agents/index.vue"),
+    name: "Agents",
     meta: { requiresAuth: true },
   },
   {