fix: remove health check remove

[shadowfax92]

No description provided.

[greptile-apps]

Greptile Summary

Removed obsolete watchdog timer from health check endpoint. The watchdog previously terminated the process if no health checks were received within 5 minutes. This functionality is now handled more robustly by the CDP backend's keepalive mechanism (introduced in #365), which actively monitors the connection and handles reconnection gracefully.

• Removed HEALTH_CHECK_TIMEOUT constant, watchdogTimer variable, and resetWatchdog() function
• Cleaned up unused imports (EXIT_CODES, logger)
• Health endpoint now simply returns status and CDP connection state
• Version bumped to 0.0.61

This cleanup aligns with the codebase guideline to remove unused/dead code rather than leaving it in place.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• This is a straightforward cleanup that removes obsolete code. The watchdog functionality has been superseded by a more robust CDP keepalive mechanism. The changes are minimal, well-understood, and reduce code complexity without affecting functionality.
• No files require special attention

Important Files Changed

Filename	Overview
apps/server/src/api/routes/health.ts	Removed obsolete watchdog timer logic, now handled by CDP backend keepalive

_{Last reviewed commit: c57d1eb}