feat: video-flow initial commit

- app.py: Streamlit UI for video generation workflow
- main_flow.py: CLI tool with argparse support
- modules/: Business logic modules (script_gen, image_gen, video_gen, composer, etc.)
- config.py: Configuration with API keys and paths
- requirements.txt: Python dependencies
- docs/: System prompt documentation

modules/storage.py

@@ -0,0 +1,84 @@
+"""
+MatchMe Studio - Storage Module (R2)
+"""
+import os
+import logging
+import time
+import uuid
+import boto3
+from botocore.exceptions import NoCredentialsError
+from pathlib import Path
+from typing import Optional
+
+import config
+
+logger = logging.getLogger(__name__)
+
+def get_s3_client():
+    try:
+        return boto3.client(
+            's3',
+            endpoint_url=config.R2_ENDPOINT,
+            aws_access_key_id=config.R2_ACCESS_KEY,
+            aws_secret_access_key=config.R2_SECRET_KEY,
+            region_name='auto'
+        )
+    except Exception as e:
+        logger.error(f"Failed to create R2 client: {e}")
+        raise
+
+def upload_file(file_path: str) -> Optional[str]:
+    """Upload file to R2 and return Public URL."""
+    if not os.path.exists(file_path):
+        logger.error(f"File not found: {file_path}")
+        return None
+    
+    # 使用 UUID 作为文件名，避免中文/特殊字符导致的 URL 问题
+    original_name = Path(file_path).name
+    ext = Path(file_path).suffix.lower() or ".bin"
+    object_name = f"{uuid.uuid4().hex}{ext}"
+    
+    s3 = get_s3_client()
+    
+    try:
+        logger.info(f"Uploading {original_name} to R2 as {object_name}...")
+        
+        # 根据后缀设置正确的 Content-Type
+        if ext == ".png":
+            content_type = "image/png"
+        elif ext in [".jpg", ".jpeg"]:
+            content_type = "image/jpeg"
+        elif ext == ".mp4":
+            content_type = "video/mp4"
+        elif ext == ".mp3":
+            content_type = "audio/mpeg"
+        else:
+            content_type = "application/octet-stream"
+        
+        s3.upload_file(
+            file_path, 
+            config.R2_BUCKET_NAME, 
+            object_name,
+            ExtraArgs={'ContentType': content_type}
+        )
+        
+        public_url = f"{config.R2_PUBLIC_URL}/{object_name}"
+        logger.info(f"Upload successful: {public_url}")
+        return public_url
+        
+    except Exception as e:
+        logger.error(f"R2 Upload Failed: {e}")
+        return None
+
+def cleanup_temp(max_age_seconds: int = 3600):
+    """Delete old temp files."""
+    logger.info("Running cleanup_temp...")
+    now = time.time()
+    if not config.TEMP_DIR.exists(): return
+
+    for f in config.TEMP_DIR.iterdir():
+        try:
+            if f.is_file() and (now - f.stat().st_mtime) > max_age_seconds:
+                f.unlink()
+        except Exception as e:
+            logger.warning(f"Failed to delete {f}: {e}")