feat: Implement Worker Service for long-running HTTP service with PM2 management

- Introduced WorkerService class to handle HTTP requests and manage sessions.
- Added endpoints for health check, session management, and data retrieval.
- Integrated ChromaSync for background data synchronization.
- Implemented SSE for real-time updates to connected clients.
- Added error handling and logging throughout the service.
- Cached Claude executable path for improved performance.
- Included settings management for user configuration.
- Established database interactions for session and observation management.

ecosystem.config.cjs

@@ -10,27 +10,29 @@
  */
 
 module.exports = {
-  apps: [{
-    name: 'claude-mem-worker',
-    script: './plugin/scripts/worker-service.cjs',
-    // INTENTIONAL: Watch mode enables auto-restart on plugin updates
-    //
-    // Why this is enabled:
-    // - When you run `npm run sync-marketplace` or rebuild the plugin,
-    //   files in ~/.claude/plugins/marketplaces/thedotmack/ change
-    // - Watch mode detects these changes and auto-restarts the worker
-    // - Users get the latest code without manually running `pm2 restart`
-    //
-    // This is a feature, not a bug - it ensures users always run the
-    // latest version after plugin updates.
-    watch: true,
-    ignore_watch: [
-      'node_modules',
-      'logs',
-      '*.log',
-      '*.db',
-      '*.db-*',
-      '.git'
-    ]
-  }]
+  apps: [
+    {
+      name: 'claude-mem-worker',
+      script: './plugin/scripts/worker-service.cjs',
+      // INTENTIONAL: Watch mode enables auto-restart on plugin updates
+      //
+      // Why this is enabled:
+      // - When you run `npm run sync-marketplace` or rebuild the plugin,
+      //   files in ~/.claude/plugins/marketplaces/thedotmack/ change
+      // - Watch mode detects these changes and auto-restarts the worker
+      // - Users get the latest code without manually running `pm2 restart`
+      //
+      // This is a feature, not a bug - it ensures users always run the
+      // latest version after plugin updates.
+      watch: true,
+      ignore_watch: [
+        'node_modules',
+        'logs',
+        '*.log',
+        '*.db',
+        '*.db-*',
+        '.git'
+      ]
+    }
+  ]
 };