[DX] Improve Development Server File Watching

[mislam]

Current Behavior:

• Server doesn't reload when .env file changes
• New files added to src directory don't trigger reload
• Only existing TypeScript files are watched

Expected Behavior:

• Server should restart when any relevant file changes:
  • .env file modifications
  • New TypeScript files added to src
  • Changes in imported modules

Proposed Solutions:

1. Option A: Use Nodemon

   npm install nodemon --save-dev

   Update dev script:

   "dev": "nodemon --watch src --watch .env src/index.ts -x 'tsx'"

   Pros: Industry standard, reliable watching
   Cons: Adds dependency

2. Option B: Enhance TSX Watch

   "dev": "tsx watch --watch-path src --watch-path .env src/index.ts"

   Pros: No new dependencies
   Cons: Less mature watching implementation

Technical Notes:

• Both solutions require testing edge cases:
  • Adding new files to watched directories
  • Changing environment variables
  • Modifying imported modules
• Consider long-term maintenance and DX