refactor(core): Lint to restrict @n8n/typeorm to persistence layer (no-changelog) (#9840)

packages/@n8n_io/eslint-config/local-rules.js

@@ -422,6 +422,32 @@ module.exports = {
 			};
 		},
 	},
+
+	'misplaced-n8n-typeorm-import': {
+		meta: {
+			type: 'error',
+			docs: {
+				description:
+					'Ensure `@n8n/typeorm` is imported only from within the `packages/cli/src/databases` directory.',
+				recommended: 'error',
+			},
+			messages: {
+				moveImport: 'Move this import to `packages/cli/src/databases/**/*.ts`.',
+			},
+		},
+		create(context) {
+			return {
+				ImportDeclaration(node) {
+					if (
+						node.source.value === '@n8n/typeorm' &&
+						!context.getFilename().includes('packages/cli/src/databases/')
+					) {
+						context.report({ node, messageId: 'moveImport' });
+					}
+				},
+			};
+		},
+	},
 };
 
 const isJsonParseCall = (node) =>