fix: 收紧CSS所有权与历史兼容门禁

.github/workflows/css-quality.yml

@@ -17,7 +17,20 @@ jobs:
           node-version: 24
           cache: npm
       - run: npm ci
-      - name: Verify changed formatting and CSS ownership
+      - name: Resolve the complete change range
         env:
-          QUALITY_BASE_REF: ${{ github.event_name == 'pull_request' && format('origin/{0}', github.base_ref) || format('{0}^', github.sha) }}
+          EVENT_NAME: ${{ github.event_name }}
+          PR_BASE: ${{ github.event.pull_request.base.sha }}
+          PUSH_BEFORE: ${{ github.event.before }}
+        run: |
+          if [ "$EVENT_NAME" = pull_request ]; then
+            base=$(git merge-base "$PR_BASE" HEAD)
+          elif [ "$PUSH_BEFORE" = 0000000000000000000000000000000000000000 ]; then
+            base=$(git hash-object -t tree /dev/null)
+          else
+            git cat-file -e "$PUSH_BEFORE^{commit}"
+            base=$PUSH_BEFORE
+          fi
+          echo "QUALITY_BASE_REF=$base" >> "$GITHUB_ENV"
+      - name: Verify changed formatting and CSS ownership
         run: npm run format:check && npm run style:check && npm run css:verify