Agent Skills: dyad:pr-fix:ci

Diagnose and fix failing CI checks on a pull request from its latest GitHub Actions CI run. Use when PR CI has E2E/Playwright failures, macOS or Windows unit-test failures, or presubmit/type/build failures; analyzes the exact run logs and artifacts, invokes dyad:deflake-e2e-from-run for E2E failures, reproduces targeted unit tests locally, and publishes the fixes.