chore(agents): implement v2 hardening and enforcement-ready QA

.gitea/workflows/qa-required.yaml

@@ -0,0 +1,24 @@
+name: qa-required
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  qa-required:
+    name: qa-required
+    runs-on: ubuntu-latest
+
+    # Phase 1: workflow is present and runnable, but branch protection does not
+    # require this check yet. Enable required checks in Phase 2.
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Start project services
+        run: docker compose up -d
+
+      - name: Run required QA gates
+        run: bin/qa-required.sh