[datlechin]

• New section #database-role in the MCP guide (en + vi): a PostgreSQL role and a MySQL user that can only read, a duplicated connection that signs in as it, a no-op UPDATE to check it, and what the role does not cover (SECURITY DEFINER functions, MySQL EXECUTE, default_transaction_read_only).
• Every statement and error message in it was run against PostgreSQL 17.11 and MySQL 8.4.13.
• Limitations: adds the MCP Query timeout (30 s default, a client may ask for up to 300).
• Settings path: Settings > Integrations is Settings > MCP since 0.80 (TablePro#3324).
• Test: each Vietnamese guide keeps the original's section anchors, in order.

Refs #126