feat(logging): add comprehensive logging to all API routes (Phase 4)

Applied withLogging() wrapper to all 24 API routes for consistent logging:

Process Control Routes:
- Start/stop/restart individual processes
- Start-all/stop-all/restart-all batch operations

Signal Routes:
- Signal individual processes
- Signal all processes
- Signal process groups

Group Management Routes:
- Start/stop/restart process groups
- Signal operations for groups

Configuration Routes:
- Get all configs (GET)
- Reload configuration (POST)
- Add/remove process groups (POST/DELETE)

Log Routes:
- Read main supervisord log
- Read process stdout/stderr logs
- Clear process logs (individual and all)

System Routes:
- Get system info
- Get all processes info
- Get individual process info
- Send stdin to process

All routes now include:
- Request/response logging with timing
- Automatic error handling and correlation IDs
- X-Request-ID header propagation
- Consistent metadata in responses

Also fixed Next.js 16 deprecation:
- Moved experimental.serverComponentsExternalPackages to serverExternalPackages

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

next.config.ts

@@ -5,9 +5,7 @@ const nextConfig: NextConfig = {
   output: 'standalone',
   // Turbopack configuration (Next.js 16+)
   turbopack: {},
-  experimental: {
-    serverComponentsExternalPackages: ['pino', 'pino-pretty'],
-  },
+  serverExternalPackages: ['pino', 'pino-pretty'],
 };
 
 export default nextConfig;