chore(pydantic): migrate to v2 compatibility

app/core/config.py

@@ -4,7 +4,7 @@ Configuration management for the FastAPI application.
 
 import os
 from typing import Optional
-from pydantic import BaseSettings
+from pydantic_settings import BaseSettings
 
 
 class Settings(BaseSettings):
@@ -44,10 +44,14 @@ class Settings(BaseSettings):
     # Server Configuration
     HOST: str = "0.0.0.0"
     PORT: int = 7860  # HuggingFace Spaces standard
-    
+
+    # Development Configuration
+    DEBUG: bool = False
+
     class Config:
         env_file = ".env"
         case_sensitive = True
+        extra = "ignore"
 
 
 # Global settings instance

app/models/inference.py

@@ -3,7 +3,7 @@ Pydantic models for API requests and responses.
 """
 
 from typing import List, Optional, Dict, Any
-from pydantic import BaseModel, Field, validator
+from pydantic import BaseModel, Field, field_validator
 import base64
 
 
@@ -61,7 +61,8 @@ class InferenceRequest(BaseModel):
         description="List of class IDs to filter (None for all classes)"
     )
     
-    @validator('image')
+    @field_validator('image')
+    @classmethod
     def validate_image(cls, v):
         """Validate base64 image data."""
         try: