Module db 

Database layer: backend trait, SQL validation, and identifier checking.

Modules

backend

Database backend trait, enum dispatch, and tool-level orchestration.

identifier

Shared identifier validation for all database backends.

mysql

MySQL/MariaDB backend implementation via sqlx.

postgres

PostgreSQL backend implementation via sqlx.

sqlite

SQLite backend implementation via sqlx.

validation

AST-based SQL validation for read-only mode enforcement.