[tee8z]

The pinned Playwright cannot install Chromium on the Ubuntu 26.04 image now selected by ubuntu-latest. Desktop smoke and relay integration fail before reaching app tests, including on #149 and #155.

Pin the three browser jobs (smoke, relay integration, and flake smoke) to supported Ubuntu 24.04. Rust and other non-browser jobs keep their existing runners. Browser versions, test selection, timeouts, and gates remain the same.

Validation: actionlint passes for all three workflows; all 29 required-gate tests and the existing apt-retry tests pass. The exact failed CI logs show Playwright does not support chromium on ubuntu26.04-x64. A real hosted rerun remains necessary to confirm browser installation; this machine cannot emulate a GitHub hosted runner.

Draft pending independent review and human confirmation of the hosted checks. No deployment or review-completed attestation.

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[tee8z]

Independent review of 9c0bdb0: no blocking or optional findings. The diff pins precisely the three jobs that install and run Playwright to ubuntu-24.04; their existing shard selection, permissions, dependency installation and timeout bounds remain consistent. This addresses the reported runner-platform rejection without changing unrelated CI lanes.

I independently ran actionlint for all three changed workflows, the CI required-gate and apt-retry test suites (37 passed), and the diff check. I inspected each affected job in context; I did not execute a hosted Playwright job myself.

Scores: minimalism 9/10, elegance 9/10, correctness 9/10. Hosted workflow verification and the repository's human confirmation requirement still govern readiness; this is not a buzz-review-completed attestation.