fix(ci): debug runner container mounts to find host workspace path

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/qa-required.yaml

@@ -22,6 +22,13 @@ jobs:
       - name: Create .env for CI
         run: cp .env.example .env
 
+      - name: Debug volume mount
+        run: |
+          echo "=== runner container mounts ==="
+          SELF=$(cat /proc/self/cgroup 2>/dev/null | grep -o '[a-f0-9]\{64\}' | head -1 || true)
+          echo "self container id: $SELF"
+          docker inspect "$SELF" 2>/dev/null | grep -A5 '"Mounts"' | head -30 || echo "inspect failed"
+
       - name: Start project services
         run: |
           docker compose down --remove-orphans 2>/dev/null || true