Update state.json and development plan to reflect actual progress (~15%)

- state.json: Phase 5 status changed to pending, next steps updated
- DEVELOPMENT_PLAN.md v1.1: Added actual progress, verified current state,
  renumbered phases 5-9, marked all remaining work as PENDING
- Deleted outdated plans (BACKEND_TEST_PLAN, DATA_LOADING_VERIFICATION,
  DOCKER_MIGRATION_PLAN, ENDPOINT_AUDIT, ROADMAP, SIMPLIFICATION_PLAN,
  STATEMENT_OF_INTENT, backend/TEST_PLAN)
- Added new files: DEVELOPMENT_PLAN.md, backend/ARCHITECTURAL_REPORT.md,
  backend/SIMPLIFICATION_SUMMARY.md, backend/run.py, backend/.dockerignore

backend/run.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+"""Simple startup script for MTG Online backend.
+
+Usage:
+    cd backend
+    python run.py
+
+This will:
+1. Initialize the database (create tables if needed)
+2. Start the FastAPI server with uvicorn
+3. Listen on http://0.0.0.0:8000
+
+For development:
+- Uses SQLite by default (configured in app/core/config.py)
+- No external dependencies required
+- Hot reload enabled with --reload flag
+
+For production:
+- Set DATABASE_URL to PostgreSQL connection string
+- Set SECRET_KEY to a secure random value
+- Run without --reload flag
+"""
+
+import sys
+import uvicorn
+from app.core.database import create_tables
+from app.main import app
+
+
+def main():
+    """Initialize database and start the server."""
+    print("Initializing database...")
+    # Run create_tables in an event loop
+    import asyncio
+    asyncio.run(create_tables())
+    print("Database initialized.")
+    
+    print("Starting server at http://0.0.0.0:8000")
+    print("API docs available at http://0.0.0.0:8000/docs")
+    
+    uvicorn.run(
+        app,
+        host="0.0.0.0",
+        port=8000,
+        reload=True,  # Enable hot reload for development
+    )
+
+
+if __name__ == "__main__":
+    main()