feat: enhance AI scan to skip existing tables

[Artuomka]

No description provided.

[Copilot]

Pull request overview

This PR enhances the AI scan functionality to skip tables that already have settings in the database, avoiding redundant processing. The implementation fetches existing table settings for a connection, filters out tables that already have settings, and only scans new tables.

Changes:

• Added logic to query existing table settings before scanning
• Implemented filtering to skip tables with existing settings
• Added early return when no new tables need scanning

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[Copilot]

The query structure for finding table settings by connection_id is incorrect. The where clause uses a nested object structure connection_id: { id: connection.id }, but based on TypeORM's usage patterns in this codebase, it should directly use the connection ID. The correct structure should be where: { connection_id: connection.id } instead. This will likely cause the query to return no results, making the filtering logic ineffective.

Suggested change

	connection_id: {
	id: connection.id,
	},
	},
	});
	connection_id: connection.id,
	},
	});