Phase 7: End-to-End API Testing - Database setup, migrations, and application fixes

- Switched from psycopg2 to asyncpg for async SQLAlchemy support
- Fixed router registration in main.py - removed duplicate prefixes
- Added user_data export to routers/__init__.py
- Refactored decks router to use DeckManager service layer
- Integrated FuzzyCardMatcher into card_router search endpoints
- Made WishlistCreate.card_id optional for proper schema validation
- Set PostgreSQL password and configured scram-sha-256 auth
- Updated alembic.ini to use local PostgreSQL instead of Docker hostname
- Created generic_schemas.py for reusable schema patterns
- Added test_routers.py and test_schema_validation.py test files
- All 6 Alembic migrations applied successfully (37 tables created)
- Application running on port 8000 with all services connected

backend/app/schemas/card_search_schemas.py

@@ -1,5 +1,5 @@
 """Pydantic schemas for card search and import features."""
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Field, ConfigDict
 from typing import List, Optional, Dict, Any
 from datetime import datetime
 
@@ -23,8 +23,7 @@ class CardResponse(BaseModel):
     identifiers: Optional[Dict[str, Any]] = None
     images: Optional[Dict[str, Any]] = None
 
-    class Config:
-        from_attributes = True
+    model_config = ConfigDict(from_attributes=True)
 
 
 class SetResponse(BaseModel):
@@ -35,8 +34,7 @@ class SetResponse(BaseModel):
     release_date: Optional[datetime] = None
     card_count: Optional[int] = None
 
-    class Config:
-        from_attributes = True
+    model_config = ConfigDict(from_attributes=True)
 
 
 class CardTypeResponse(BaseModel):
@@ -93,6 +91,7 @@ class CardImportSummary(BaseModel):
     import_id: Optional[int] = None
 
 
+# Generic response models
 class MessageResponse(BaseModel):
     """Generic message response."""
     message: str