Fix MTGJSON download functionality

- Add refresh router with admin-only endpoints
- Fix _decompress_file to handle .psql files correctly
- Fix duplicate imports in mtgjson_manager.py
- Mount refresh router in main.py
- Add download_mtgjson.py standalone script
- Add SUPPORTED_FILE_TYPES.md documentation

state.json

@@ -1,21 +1,37 @@
-{
-  "task_description": "MTG Online Web - Full deployment and testing",
-  "current_step": "Reviewing project files and saving state",
-  "files_created": [],
-  "files_modified": [],
-  "decisions": [
-    "Project uses Python/FastAPI backend with PostgreSQL and Redis",
-    "MTGJSON data integration includes AllPrintings.json, AllIdentifiers.json, CardTypes.json, etc.",
-    "Docker Compose for multi-container orchestration"
-  ],
-  "next_steps": [
-    "Push and commit to Gitea",
-    "Stop all Docker containers",
-    "Build Backend container",
-    "Deploy stack and verify health",
-    "Check logs and fix any issues"
-  ],
-  "blockers": [],
-  "commit_hash": "3fae593",
-  "timestamp": "2026-07-20T14:00:00Z"
-}
+# MTG Online Backend - Project State
+
+## Project Overview
+A Python FastAPI backend service for MTG Online (Magic: The Gathering) that integrates with MTGJSON data and provides APIs for deck management, game rooms, and card data.
+
+## Current Status: Ready for Deployment
+
+### Completed Steps
+1. ✅ Set up Docker Compose stack (PostgreSQL, Redis, Backend, Refresh services)
+2. ✅ Clean up corrupted MTGJSON data files
+3. ✅ Downloaded fresh MTGJSON data from API
+4. ✅ Simplified MTGJSON data management service
+5. ✅ Updated database schema to support all JSON data
+6. ✅ Fixed directory naming issues
+7. ✅ Rebuilt and redeployed backend
+
+### Next Steps
+- Verify backend health and database connectivity
+- Test the refresh cycle
+- Confirm all MTGJSON data is properly stored
+
+## Key Files
+- Dockerfile: `/home/wall-o/projects/mtgonline/backend/Dockerfile`
+- docker-compose.yml: `/home/wall-o/projects/mtgonline/docker-compose.yml`
+- .env.local: `/home/wall-o/projects/mtgonline/.env.local`
+- Database schema: `/home/wall-o/projects/mtgonline/backend/scripts/init-mtgdata.sql`
+- Main application: `/home/wall-o/projects/mtgonline/backend/app/main.py`
+- Database connection: `/home/wall-o/projects/mtgonline/backend/app/core/database.py`
+- MTGJSON manager: `/home/wall-o/projects/mtgonline/backend/app/services/mtgjson_manager.py`
+
+## Technical Details
+- Python 3.12 with FastAPI
+- PostgreSQL 16 with asyncpg
+- Redis 7 for caching
+- MTGJSON data integration for card database
+- Docker Compose for orchestration
+- Volume-based persistence for databases and MTG data