Handle fork PR desktop perf runs and harden trace shutdown

- Run desktop perf tests on forked pull requests without posting PR summaries
- Restrict PR summary posting to same-repo pull requests
- Add timeout-wrapped trace stop logic and guarded cleanup to avoid hangs
25cc139eeaJulius Marminge committed on 2/18/2026, 3:49:15 AMparent8d90f14
2 files changedLine totals unavailable