update README and demo link

Author: Xiaoyi

README.md

@@ -2,7 +2,7 @@
 
 [![arXiv](https://img.shields.io/badge/arXiv-2504.16082-A42C25?style=flat&logo=arXiv&logoColor=A42C25)](https://arxiv.org/abs/2505.18079)
 [![License](https://img.shields.io/badge/License-MIT-red.svg)](https://opensource.org/licenses/MIT)
-[![Hugging Face Spaces](https://img.shields.io/badge/Spaces-Demo-blueviolet?logo=huggingface&logoColor=white)](TODO)
+[![Hugging Face Spaces](https://img.shields.io/badge/Spaces-Demo-blueviolet?logo=huggingface&logoColor=white)](https://2b295b16087857c68f.gradio.live/)
 
 
 This repository contains the official implementation of the paper [Deep Video Discovery: Agentic Search with Tool Use for Long-form Video Understanding](https://arxiv.org/abs/2505.18079), which achieves the state-of-the-art performance by a large margin on multiple long video benchmarks including the challenging [LVBench](https://lvbench.github.io/).

app.py

@@ -42,6 +42,9 @@ def _prepare_video_assets(video_url: str):
     captions_dir = os.path.join(config.VIDEO_DATABASE_FOLDER, video_id, "captions")
     video_db_path= os.path.join(config.VIDEO_DATABASE_FOLDER, video_id, "database.json")
     srt_path     = os.path.join(config.VIDEO_DATABASE_FOLDER, video_id, "subtitles.srt")
+    os.makedirs(os.path.join(config.VIDEO_DATABASE_FOLDER, "raw"), exist_ok=True)
+    os.makedirs(frames_dir, exist_ok=True)
+    os.makedirs(captions_dir, exist_ok=True)
 
     if config.LITE_MODE:
         if not os.path.exists(srt_path):
@@ -126,7 +129,7 @@ def solve(video_url: str, question: str):
 
         # Add final answer if found
         if final_answer:
-            accumulated_text += f"### ✅📃 **Final Answer:**\n\n{final_answer}"
+            accumulated_text += f"\n### 📃✅ **Final Answer:**\n\n{final_answer}"
         else:
             accumulated_text += "\n\n---\n### ✅ **Analysis Complete!**"