add-promotion-gate-action: Add git/promotion-gate composite action
publish.yaml / publish (push) Successful in 4s
publish.yaml / publish (push) Successful in 4s
Enforces which source branches may merge into which target branches, configured via a rules input (one target:allowed,allowed per line, glob-capable). Empty rules (default) skips enforcement entirely, so repos can adopt it without immediately gating on rules they have not configured. Extracted for reuse across repos moving to a gitflow-style branch promotion model, starting with stat-tackler-api.
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