Fix Cloudflare Worker compatibility for version endpoint

- Add version parameter to AppConfig interface
- Pass version from environment config instead of using process.env
- Update worker.ts to pass VERSION environment variable
- Update wrangler.toml with VERSION variable
- Update deploy script to automatically set VERSION to git commit hash

This fixes the 'process is not defined' error in Cloudflare Workers

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

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

package.json

@@ -9,7 +9,7 @@
     "dev": "ts-node src/index.ts",
     "start": "node dist/index.js",
     "test": "echo \"Error: no test specified\" && exit 1",
-    "deploy": "npx wrangler deploy src/worker.ts"
+    "deploy": "npx wrangler deploy src/worker.ts --var VERSION:$(git rev-parse --short HEAD)"
   },
   "devDependencies": {
     "@cloudflare/workers-types": "^4.20251014.0",