- Build and Publish now only triggers on push to main/develop (was: every push), so feature-branch pushes no longer run a second full matrix in parallel to PR Validation.
- integration-tests concurrency group is now scoped per calling workflow (github.workflow + github.ref), preventing PR Validation and Build and Publish from canceling each other's reusable test runs.
- Added timeout-minutes (25 per matrix job, 15 per dotnet test step, 10 for summary job) so a hung Electron process no longer keeps a runner busy until the 6h default timeout, which previously required manual cancel.
- Added --blame-hang --blame-hang-timeout 5min to dotnet test so hung tests produce a dump and fail fast instead of stalling.
- Removed pointless 0-20s random sleep step at the start of every matrix job.
