✨ feat(i18n): 完善多模块多语言适配与发版验证

扩展前后端多语言文案与共享词典。增加多模块 i18n 回归测试与 guard。收口外部 SQL 菜单和弹窗多语言文案。

frontend/src/components/QueryEditorTransaction.i18n.test.ts

@@ -0,0 +1,53 @@
+import { readFileSync } from 'node:fs';
+import { describe, expect, it } from 'vitest';
+
+const settingsSource = readFileSync(new URL('./QueryEditorTransactionSettings.tsx', import.meta.url), 'utf8');
+const toolbarSource = readFileSync(new URL('./QueryEditorTransactionToolbar.tsx', import.meta.url), 'utf8');
+
+const settingsLegacyLiterals = [
+  '立即',
+  '参考 DBeaver',
+  '手动',
+  '自动',
+];
+
+const toolbarLegacyLiterals = [
+  '后自动提交',
+  '自动提交中',
+  '提交',
+  '回滚',
+];
+
+const requiredKeys = [
+  'query_editor.transaction.delay.immediate',
+  'query_editor.transaction.mode.tooltip',
+  'query_editor.transaction.mode.manual',
+  'query_editor.transaction.mode.auto',
+  'query_editor.transaction.status.auto_commit_countdown',
+  'query_editor.transaction.status.auto_committing',
+  'query_editor.transaction.action.commit',
+  'query_editor.transaction.action.commit_with_count',
+  'query_editor.transaction.action.rollback',
+];
+
+describe('QueryEditor transaction i18n', () => {
+  it('uses localized keys for transaction settings and toolbar chrome', () => {
+    for (const source of [settingsSource, toolbarSource]) {
+      expect(source).toContain("import { useOptionalI18n } from '../i18n/provider';");
+      expect(source).toContain('const i18n = useOptionalI18n();');
+      expect(source).toContain('const t = i18n?.t ?? defaultTranslate;');
+    }
+
+    for (const key of requiredKeys) {
+      expect(`${settingsSource}\n${toolbarSource}`).toContain(key);
+    }
+
+    for (const literal of settingsLegacyLiterals) {
+      expect(settingsSource).not.toContain(literal);
+    }
+
+    for (const literal of toolbarLegacyLiterals) {
+      expect(toolbarSource).not.toContain(literal);
+    }
+  });
+});