Fix the shared-renderer client contains-check pattern

[SunkenInTime]

The slice-3 review hardening reworded the disconnect log to 'host gone or wedged, will reconnect' after test-macos-shared-renderer-client pinned the original phrasing, so the check fails on weaver-main (caught by weaver CI in SunkenInTime/weaver#47). Pin the invariant — the reconnect promise — not the exact prose. Verified: the check step passes locally.

[greptile-apps]

Greptile Summary

This change corrects the macOS shared-renderer contract check so it matches the exact reconnect message emitted after a timed frame-send failure.

The executed source check confirmed that the previous phrase is absent from src/platform/macos/appkit_host.m, while the replacement phrase occurs at line 992 in the timed frame-send failure branch and is followed by session teardown and a refused present.

T-Rex validation blocked

The repository's native check could not be run because the zig tool is missing from the environment. A dependency-free validation exercised the same literal substring behavior for this static assertion. Configure VMs

Confidence Score: 5/5

Safe to merge: the assertion now tracks the exact reconnect message emitted by the intended macOS frame-send failure path.

The final defect set is empty. Executed validation confirmed that the replacement text is present in the intended branch and that the obsolete text would not match the current implementation.

Files Needing Attention: No files need further attention. build.zig and the matching reconnect branch in src/platform/macos/appkit_host.m were checked.

T-Rex Logs

What T-Rex did

• Ran the dependency-free shared renderer reconnect validation script for old and new expectations; the old assertion was absent and the new assertion was found in the timed mach_msg frame-send error branch, and Zig checker was unavailable.
• Execution record shows the validation harness exited with status 0 for both old and new runs, confirming the old case absence and the new frame presence, and notes that Zig checker is not installed.

_{Ran code and verified through T-Rex}

_{Reviews (2): Last reviewed commit: "Pin the exact reconnect log line, not a ..." | Re-trigger Greptile}

[SunkenInTime]

@greptileai review