ClanSystem-v1

ClanSystem Update: Database, Redis & Config

• Database now supports MySQL & SQLite (auto fallback to SQLite)
• Redis cache support: Set database.redis.enabled to true for Redis-based cache
• New: database.type config (mysql/sqlite) in database.json
• All DB access via interface, safer and more robust
• Startup log shows DB type, cache type (ExpiringMap/Redis), status, and config source
• All cache/DB ops are null-safe

**Default config:**
- database.type: mysql
- database.mysql.host: localhost
- database.mysql.port: 3306
- database.mysql.database: database
- database.mysql.username: username
- database.mysql.password: password
- database.redis.enabled: false
- database.redis.host: localhost
- database.redis.port: 6379
- database.redis.password: ""
- database.redis.database: 0