fix(cd): 清理 worktree 目錄避免 submodule 衝突

Deploy job 增加 rm -rf .claude/worktrees 清理步驟
解決 "no submodule mapping found" 錯誤

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/cd.yaml

@@ -209,7 +209,12 @@ jobs:
     if: always() && (needs.build-api.result == 'success' || needs.build-api.result == 'skipped') && (needs.build-web.result == 'success' || needs.build-web.result == 'skipped')
     environment: production
     steps:
+      - name: Clean worktrees
+        run: rm -rf .claude/worktrees 2>/dev/null || true
+
       - uses: actions/checkout@v4
+        with:
+          clean: true
 
       - name: Setup
         run: |