The build step only builds JobTrackerApi, so the test project was never
compiled — and `dotnet test --no-build` then made the step a ~1s no-op
(locally it errors "test source file not found"; on the persistent
self-hosted runner it can silently run a stale binary). The 306 backend
tests have not been gating CI.
Drop --no-build so the test project is compiled and the suite runs.
Verified locally: 306 passed in 14s instead of "succeeding" in 1s.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
cesnimda
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