* Improve diagnostics and fix goroutine leaks across proxy services
* add pprof and goleak coverage across packages and test runs
* fix bridge shutdown paths and aggregated log timer cleanup
* update CI and Makefile support for the new checks
* Avoid blocking stale websocket pool closes and fix readWithContext cancellation race
* Make local starts use the fresh binary and show its path
* Add Cloudflare fallback coverage and pprof tooling
* Refine connection limiting and bridge coordination
* Refactor socks5 runtime stats
* decomposition handler connections
* decomposition handler connections
* extract socks5 websocket route state and add isolated tests
* refactor mtpserver and socks5 tracking state
* isolate socks5 connect flow decisions and add direct tests
* test: extend mtpserver coverage for relay and cooldown helpers
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Co-authored-by: null <null@local.invalid>
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