v0.3.0 storage with sqlite3 and pid management added

README.md

@@ -12,21 +12,25 @@
 
 # Chess
 
-Go backend server providing a RESTful API for chess gameplay. Integrates Stockfish engine for move validation and AI opponents.
+Go backend server providing a RESTful API for chess gameplay. Integrates Stockfish engine for move validation and computer opponents.
 
 ## Features
 
 - RESTful API for chess operations
-- Stockfish engine integration for validation and AI
+- Stockfish engine integration for validation
 - Human vs human, human vs computer, computer vs computer modes
 - Custom FEN position support
-- Asynchronous AI move calculation
-- Configurable AI strength and thinking time
+- Asynchronous engine move calculation
+- Configurable engine strength and thinking time
+- Optional SQLite persistence with async writes
+- PID file management for singleton enforcement
+- Database CLI for storage administration
 
 ## Requirements
 
 - Go 1.24+
 - Stockfish chess engine (`stockfish` in PATH)
+- SQLite3 (for persistence features)
 
 ### Installation
 
@@ -45,14 +49,17 @@ git clone https://git.lixen.com/lixen/chess
 cd chess
 go build ./cmd/chessd
 
-# Standard mode (1 request/second/IP)
-./chessd
+# Standard mode with persistence
+./chessd -storage-path chess.db
 
-# Development mode (10 requests/second/IP)
-./chessd -dev
+# Development mode with PID lock on localhost custom port
+./chessd -dev -pid /tmp/chessd.pid -pid-lock -port 9090
 
-# Run tests (requires dev mode)
-./test/test-api.sh
+# Database initialization (doesn't run server)
+./chessd db init -path chess.db
+
+# Query stored games (doesn't run server)
+./chessd db query -path chess.db -gameId "*"
 ```
 
 Server listens on `http://localhost:8080`. See [API Reference](./doc/api.md) for endpoints.