ci: gate PRs on 100% patch coverage + 95% project floor#32
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Adds diff-cover patch-coverage enforcement to the coverage workflow: every changed line in a PR must be covered by a test (--fail-under=100), and the total project coverage must stay >=95%. Go coverage is converted to Cobertura via gocover-cobertura so diff-cover can read it. Gated to pull_request events (push has no base_ref). New permanent org mandate. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
--fail-under=100).go tool cover.gocover-coberturaso diff-cover can read it.pull_requestevents only (push has nobase_ref). New permanent org mandate.Notes
.github/**automatically — this PR will not fail itself on its own diff.fetch-depth: 0added so diff-cover can resolveorigin/<base_ref>.🤖 Generated with Claude Code