🐛 fix(editor): 修正 SQL 编辑器 DML 事务提交语义

- SQL 编辑器 DML 固定进入托管事务

- 区分 WITH SELECT 和 WITH DML 的事务判定

- 调整提交方式文案并补充前后端回归测试

frontend/src/utils/sqlEditorTransaction.test.ts

@@ -0,0 +1,41 @@
+import { describe, expect, it } from 'vitest';
+
+import {
+  resolveSqlEditorOperationKeyword,
+  shouldUseSqlEditorManagedTransaction,
+} from './sqlEditorTransaction';
+
+describe('sqlEditorTransaction', () => {
+  it('keeps regular DML in a managed transaction', () => {
+    expect(shouldUseSqlEditorManagedTransaction(['UPDATE users SET name = "n" WHERE id = 1'])).toBe(true);
+    expect(shouldUseSqlEditorManagedTransaction(['INSERT INTO users(id) VALUES (1)'])).toBe(true);
+    expect(shouldUseSqlEditorManagedTransaction(['DELETE FROM users WHERE id = 1'])).toBe(true);
+  });
+
+  it('classifies WITH statements by their top-level operation', () => {
+    expect(resolveSqlEditorOperationKeyword('WITH target AS (SELECT id FROM users) SELECT * FROM target')).toBe('select');
+    expect(resolveSqlEditorOperationKeyword('WITH target AS (SELECT id FROM users) UPDATE users SET synced = 1')).toBe('update');
+    expect(resolveSqlEditorOperationKeyword('WITH target AS (SELECT id FROM users) DELETE FROM users WHERE id IN (SELECT id FROM target)')).toBe('delete');
+  });
+
+  it('uses managed transactions for WITH DML but not WITH SELECT', () => {
+    expect(shouldUseSqlEditorManagedTransaction([
+      'WITH target AS (SELECT id FROM users) UPDATE users SET synced = 1 WHERE id IN (SELECT id FROM target)',
+    ])).toBe(true);
+    expect(shouldUseSqlEditorManagedTransaction([
+      'WITH target AS (SELECT id FROM users) SELECT * FROM target',
+    ])).toBe(false);
+  });
+
+  it('does not wrap user-authored explicit transactions', () => {
+    expect(shouldUseSqlEditorManagedTransaction([
+      'BEGIN',
+      'UPDATE users SET name = "n" WHERE id = 1',
+      'COMMIT',
+    ])).toBe(false);
+    expect(shouldUseSqlEditorManagedTransaction([
+      'START TRANSACTION',
+      'DELETE FROM users WHERE id = 1',
+    ])).toBe(false);
+  });
+});