diff --git a/.forgejo/workflows/pr-checks.yml b/.forgejo/workflows/pr-checks.yml
index 51bab25..360c833 100644
--- a/.forgejo/workflows/pr-checks.yml
+++ b/.forgejo/workflows/pr-checks.yml
@@ -1,15 +1,20 @@
 name: PR checks
 
-# Enforces the contribution policy on every PR into master (all gates hard):
+# Enforces the contribution policy on every PR into master — plus the crewing
+# integration branch (feat/crewing-foundations), which collects the stacked,
+# feature-flagged crewing phases before they merge to master. Same hard gates:
 #   - code changes must ship with tests (docs/config/automation are exempt)
 #   - type-check is clean across the whole project (tests included)
 #   - unit tests pass
 #   - integration tests pass against an ephemeral Postgres (migrate + seed)
 # Runs on the pms1 host runner. See automation/README.md > "Contribution policy".
+#
+# Note: for pull_request events the workflow is read from the BASE branch, so a
+# base must appear in this list for its incoming PRs to be checked.
 
 on:
   pull_request:
-    branches: [master]
+    branches: [master, feat/crewing-foundations]
 
 jobs:
   checks: