docs: add comprehensive database architecture documentation

Create detailed database architecture documentation with Mermaid diagrams including:
- Class hierarchy and design patterns (Factory, DAO, Strategy, Template Method)
- Connection management flows and lifecycle
- Database table structures and entity relationships
- SQL dialect handling for SQL Server and MySQL
- Data flow and batch processing logic
- Code examples and best practices

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Misaka
2026-02-09 23:14:40 +08:00
parent aaa46ef282
commit b88ce96194

File diff suppressed because it is too large Load Diff