feat(ci): surface merge-queue needs-validation ejection as a PR comment #15090

Job	Run time
Resolve runner profiles	10s
Static gate	12s
Detect validation scopes	14s
E2E Vitest	2m 20s
Preflight	3m 5s
Windows tools-pack payload tests	2m 46s
Workspace unit tests	1m 36s
Validate Nix flake	4m 24s
Web workspace tests	3m 9s
UI P0 smoke	1m 35s
Playwright visual (settings-workspace)	2m 58s
Playwright visual (entry-navigation)	2m 27s
Docker image build	3m 48s
UI P0 (workspace-restoration)	4m 7s
UI P0 (project-workspace)	4m 38s
UI P0 (entry-settings)	5m 4s
UI P0 (project-runtime)	4m 4s
Playwright critical (${{ matrix.group }})	-1s
Validate workspace	8s
Runtime summary	6s
	46m 50s

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