Add metadata saving functionality and enhance LoraCard with usage tips and notes

utils/file_utils.py

@@ -52,6 +52,8 @@ async def get_file_info(file_path: str) -> LoraMetadata:
         modified=os.path.getmtime(file_path),
         sha256=await calculate_sha256(file_path),
         base_model="Unknown",  # Will be updated later
+        usage_tips="",
+        notes="",
         from_civitai=True,
         preview_url=normalize_path(preview_url),
     )

utils/models.py

@@ -15,6 +15,8 @@ class LoraMetadata:
     sha256: str                 # SHA256 hash of the file
     base_model: str             # Base model (SD1.5/SD2.1/SDXL/etc.)
     preview_url: str            # Preview image URL
+    usage_tips: str = ""        # Usage tips for the model
+    notes: str = ""             # Additional notes
     from_civitai: bool = True  # Whether the lora is from Civitai
     civitai: Optional[Dict] = None  # Civitai API data if available