* test(wsl): drive hook-relay reattach bench through real PTY spawn
Follow-up to #13139: stop calling ensureWslHookRelayForReattach from the
benchmark and instead reattach a surviving WSL PTY via main's
registerPtyHandlers path, so a missing or misplaced integration in pty.ts
fails the bench.
* refactor(bench): isolate reattach relay refresh measurement and verify s
- Wrap benchmark in try-finally for reliable cleanup
- Add jiti module graph duplication detection to catch missing pty.ts integration
- Track relay refreshes only during reattach phase to avoid false positives from earlier phases
- Disable agent-status hooks during PTY spawn (reattach path doesn't gate on them)
- Improve error messages and make cleanup safe with optional chaining
3e6b93f0d2