fix(ci): always run pull_request checks

no waiting for pending forever!

.github/workflows/history-check.yml

@@ -14,6 +14,9 @@ name: History Check
 # the PR head and main to be non-empty.
 
 on:
+  # No paths filter — the job must always run so the required check
+  # reports a status (path-gated workflows leave checks "pending" forever
+  # when no matching files change, which blocks merge).
   pull_request:
     branches: [main]
 
@@ -24,9 +27,9 @@ jobs:
   check-common-ancestor:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
-          fetch-depth: 0  # full history both sides for merge-base
+          fetch-depth: 0 # full history both sides for merge-base
 
       - name: Reject PRs with no common ancestor on main
         run: |