Add Linker and Optimizer modules with API integration and frontend components

- Added Linker and Optimizer apps to `INSTALLED_APPS` in `settings.py`.
- Configured API endpoints for Linker and Optimizer in `urls.py`.
- Implemented `OptimizeContentFunction` for content optimization in the AI module.
- Created prompts for content optimization and site structure generation.
- Updated `OptimizerService` to utilize the new AI function for content optimization.
- Developed frontend components including dashboards and content lists for Linker and Optimizer.
- Integrated new routes and sidebar navigation for Linker and Optimizer in the frontend.
- Enhanced content management with source and sync status filters in the Writer module.
- Comprehensive test coverage added for new features and components.

frontend/src/config/routes.config.ts

@@ -51,6 +51,24 @@ export const routes: RouteConfig[] = [
       { path: '/thinker/profile', label: 'Profile', breadcrumb: 'Profile' },
     ],
   },
+  {
+    path: '/linker',
+    label: 'Linker',
+    icon: 'Link2',
+    children: [
+      { path: '/linker', label: 'Dashboard', breadcrumb: 'Linker Dashboard' },
+      { path: '/linker/content', label: 'Content', breadcrumb: 'Link Content' },
+    ],
+  },
+  {
+    path: '/optimizer',
+    label: 'Optimizer',
+    icon: 'Zap',
+    children: [
+      { path: '/optimizer', label: 'Dashboard', breadcrumb: 'Optimizer Dashboard' },
+      { path: '/optimizer/content', label: 'Content', breadcrumb: 'Optimize Content' },
+    ],
+  },
 ];
 
 export const getBreadcrumbs = (pathname: string): Array<{ label: string; path: string }> => {