ci: add workflow-lint to sanity-check triggers and gates for ci.yml

.gitea/workflows/workflow-lint.yml

@@ -0,0 +1,42 @@
+name: Workflow Lint
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  workflow-sanity:
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Sanity check ci.yml triggers and gates
+        run: |
+          set -euo pipefail
+          python3 - <<'PY'
+import sys, yaml, re
+from pathlib import Path
+p = Path('.gitea/workflows/ci.yml')
+w = yaml.safe_load(p.read_text())
+# 1) Top-level 'on' must exist and include pull_request + issue_comment
+on = w.get('on')
+assert isinstance(on, dict), "ci.yml: top-level 'on' must be a mapping"
+assert 'pull_request' in on, "ci.yml: missing on.pull_request"
+assert 'issue_comment' in on, "ci.yml: missing on.issue_comment (self-review trigger)"
+pr_types = on['pull_request'].get('types', []) if isinstance(on['pull_request'], dict) else []
+ic_types = on['issue_comment'].get('types', []) if isinstance(on['issue_comment'], dict) else []
+for t in ['opened','synchronize']:
+    assert t in pr_types, f"ci.yml: pull_request.types must include '{t}'"
+for t in ['created','edited']:
+    assert t in ic_types, f"ci.yml: issue_comment.types must include '{t}'"
+# 2) review-gate must run on both PR and issue_comment (if condition string)
+rg_if = w['jobs']['review-gate'].get('if','')
+assert 'github.event_name == ' in rg_if and 'issue_comment' in rg_if and 'pull_request' in rg_if, \
+    "ci.yml: review-gate.if must include both pull_request and issue_comment"
+# 3) review job must require self-review reason
+rev_if = w['jobs']['review'].get('if','')
+assert "needs.review-gate.outputs.reason == 'self-review'" in rev_if, \
+    "ci.yml: review.if must require reason=='self-review'"
+print('OK: ci.yml triggers and gates look sane')
+PY