refactor: update documentation and remove PM2 ecosystem configurations for Bun integration

plugin/ecosystem.config.cjs

@@ -1,43 +0,0 @@
-/**
- * PM2 Ecosystem Configuration for claude-mem Worker Service (Packaged Plugin)
- *
- * NOTE: This config is for the packaged/cache version of the plugin.
- * The script path is relative to the cache directory structure.
- *
- * Usage:
- *   pm2 start ecosystem.config.cjs
- *   pm2 stop claude-mem-worker
- *   pm2 restart claude-mem-worker
- *   pm2 logs claude-mem-worker
- *   pm2 status
- */
-
-module.exports = {
-  apps: [
-    {
-      name: 'claude-mem-worker',
-      // Packaged structure: cache/thedotmack/claude-mem/X.X.X/scripts/worker-service.cjs
-      script: './scripts/worker-service.cjs',
-      // Windows: prevent visible console windows
-      windowsHide: true,
-      // INTENTIONAL: Watch mode enables auto-restart on plugin updates
-      //
-      // Why this is enabled:
-      // - When plugin updates, files 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'
-      ]
-    }
-  ]
-};