esengine/.changeset/database-layer-architecture.md

@esengine/database-drivers, @esengine/database, @esengine/transaction

@esengine/database-drivers	@esengine/database	@esengine/transaction
minor	minor	minor

feat: add database layer architecture

Added new database packages with layered architecture:

@esengine/database-drivers (Layer 1)

• MongoDB connection with pool management, auto-reconnect, events
• Redis connection with auto-reconnect, key prefix
• Type-safe IMongoCollection<T> interface decoupled from mongodb types
• Service tokens for dependency injection (MongoConnectionToken, RedisConnectionToken)

@esengine/database (Layer 2)

• Generic Repository<T> with CRUD, pagination, soft delete
• UserRepository with registration, authentication, role management
• Password hashing utilities using scrypt
• Query operators: $eq, $ne, $gt, $gte, $lt, $lte, $in, $nin, $like, $regex

@esengine/transaction

• Refactored MongoStorage to use shared connection from @esengine/database-drivers
• Removed factory pattern in favor of shared connection (breaking change)
• Simplified API: createMongoStorage(connection, options?)

Example usage:

import { createMongoConnection } from '@esengine/database-drivers'
import { UserRepository } from '@esengine/database'
import { createMongoStorage, TransactionManager } from '@esengine/transaction'

// Create shared connection
const mongo = createMongoConnection({
    uri: 'mongodb://localhost:27017',
    database: 'game'
})
await mongo.connect()

// Use for database operations
const userRepo = new UserRepository(mongo)
await userRepo.register({ username: 'john', password: '123456' })

// Use for transactions (same connection)
const storage = createMongoStorage(mongo)
const txManager = new TransactionManager({ storage })