refactor: clean up remote server and improve PM2 configuration

- Remove all test files from remote server directory for cleaner production deployment
- Update PM2 ecosystem.config.js to use npm run start:server for automatic building
- Remove redundant pre_start build step since start:server handles building

app/remote-server/ecosystem.config.js

@@ -2,7 +2,8 @@ module.exports = {
   apps: [
     {
       name: 'mcp-remote-server',
-      script: 'dist/index.js',
+      script: 'npm',
+      args: 'run start:server',
       cwd: __dirname,
       instances: 1,
       autorestart: true,
@@ -48,8 +49,7 @@ module.exports = {
       // Environment-specific overrides
       merge_logs: true,
 
-      // Custom startup script (optional)
-      pre_start: 'npm run build',
+      // Build is handled by start:server script
 
       // Post-deployment hooks (optional)
       post_start: 'echo "MCP Remote Server started successfully"',