fix: render 步骤注入 TMDB_API_KEY，前端搜索功能恢复

Author: zhoumian

.github/workflows/fetch.yml

@@ -97,6 +97,7 @@ jobs:
       - name: 生成前端数据
         run: python -m scripts.render
         env:
+          TMDB_API_KEY: ${{ secrets.TMDB_API_KEY }}
           LLM_API_KEY: ${{ secrets.LLM_API_KEY }}
           LLM_API_BASE: ${{ secrets.LLM_API_BASE }}
           LLM_MODEL: ${{ secrets.LLM_MODEL }}