feat(CF-529): Add Sentry error tracking integration

- Added @sentry/node dependency
- Initialize Sentry in src/index.ts with environment variables
- Supports SENTRY_DSN, SENTRY_ENVIRONMENT, SENTRY_API_TRACE_RATE

package.json

@@ -15,6 +15,7 @@
   "license": "MIT",
   "dependencies": {
     "@modelcontextprotocol/sdk": "^1.0.4"
+    "@sentry/node": "^9.19.1",
   },
   "devDependencies": {
     "@types/node": "^20.11.0",