feat: Refactor service management scripts to use a unified dev script

- Added package.json to manage development scripts.
- Updated restart-services.ps1 to call the new dev script for starting services.
- Refactored start-admin.ps1, start-backend.ps1, start-frontend.ps1, and start-mcp.ps1 to utilize the dev script for starting respective services.
- Enhanced stop-services.ps1 to improve process termination logic by matching command patterns.

backend/src/models/_entities/site_settings.rs

@@ -28,12 +28,18 @@ pub struct Model {
     pub location: Option<String>,
     #[sea_orm(column_type = "JsonBinary", nullable)]
     pub tech_stack: Option<Json>,
+    #[sea_orm(column_type = "JsonBinary", nullable)]
+    pub music_playlist: Option<Json>,
     pub ai_enabled: Option<bool>,
+    pub paragraph_comments_enabled: Option<bool>,
     pub ai_provider: Option<String>,
     pub ai_api_base: Option<String>,
     #[sea_orm(column_type = "Text", nullable)]
     pub ai_api_key: Option<String>,
     pub ai_chat_model: Option<String>,
+    #[sea_orm(column_type = "JsonBinary", nullable)]
+    pub ai_providers: Option<Json>,
+    pub ai_active_provider_id: Option<String>,
     pub ai_embedding_model: Option<String>,
     #[sea_orm(column_type = "Text", nullable)]
     pub ai_system_prompt: Option<String>,