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.

backend/igny8_core/settings.py

@@ -54,6 +54,8 @@ INSTALLED_APPS = [
     'igny8_core.modules.automation.apps.AutomationConfig',
     'igny8_core.business.site_building.apps.SiteBuildingConfig',
     'igny8_core.modules.site_builder.apps.SiteBuilderConfig',
+    'igny8_core.modules.linker.apps.LinkerConfig',
+    'igny8_core.modules.optimizer.apps.OptimizerConfig',
 ]
 
 # System module needs explicit registration for admin
@@ -246,6 +248,8 @@ REST_FRAMEWORK = {
         # Billing Operations
         'billing': '30/min',               # Credit queries, usage logs
         'billing_admin': '10/min',         # Credit management (admin)
+        'linker': '30/min',                # Content linking operations
+        'optimizer': '10/min',             # AI-powered optimization
         # Default fallback
         'default': '100/min',              # Default for endpoints without scope
     },