Feature: Add lock manager integration with ai-dev-kit

[ViperJuice]

Summary

The ai-dev-kit plugin references .mcp-gateway/gateway.lock for coordination between the gateway and client tools. This lock mechanism could be formalized as a first-class feature in mcp-gateway.

Requested Changes

1. Document the lock file format - Add docs explaining the lock file structure and purpose
2. Add health check endpoint - Expose lock status via health/status endpoint
3. Consider lock manager API - Allow clients to query/acquire locks programmatically

Context

Files in ai-dev-kit that reference mcp-gateway:

• ai_dev_kit/mcp/lock_manager.py:101 - DEFAULT_LOCK_DIR = ".mcp-gateway"
• ai_dev_kit/cli.py:1062 - References .mcp-gateway/gateway.lock

Impact

• Improves integration reliability
• Enables better tooling around gateway coordination
• Documents implicit contract between tools

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Generated by ai-dev-kit reflection scan