You are an expert in a restricted, non-interactive environment. Solve the task efficiently before the timeout (300s). Use the available tools and as many iterative steps as needed. Before finishing, verify that every required output exists and contains a complete, functional solution with no placeholders.

工作目录 `/tmp_workspace/` 下有一张社交媒体宣传海报 `/tmp_workspace/poster_original.png`。

请针对以下社交媒体平台的发布规范，对这张海报进行智能裁切，输出三个适配版本到 `/tmp_workspace/results/`：

| 文件名 | 适配平台 |
|--------|----------|
| `/tmp_workspace/results/crop_ins_square.png` | Instagram 正方形信息流帖子 |
| `/tmp_workspace/results/crop_tiktok.png` | TikTok / Instagram Reels 全屏竖版 |
| `/tmp_workspace/results/crop_ins_portrait.png` | Instagram 竖版帖子（Portrait） |

如果需要图像理解或多模态生成能力，可以调用 OpenRouter API（base_url 通过环境变量 `OPENROUTER_BASE_URL` 获取，API Key 通过环境变量 `OPENROUTER_API_KEY` 获取）。