✨ feat(clickhouse): 支持自定义连接兼容 JDBC DSN

- 解析 ClickHouse 与 JDBC 风格 DSN 并映射协议、TLS、认证及数据库参数
- 统一连接缓存、DDL、数据同步与导出 driver-agent 生命周期
- 保持 DSN 加密存储并补充前后端回归测试和多语言提示

Fixes #383

frontend/src/utils/connectionDriverType.test.ts

@@ -41,6 +41,9 @@ describe("connectionDriverType", () => {
     );
     expect(resolveConnectionDriverType("custom", "gauss_db")).toBe("gaussdb");
     expect(resolveConnectionDriverType("custom", "goldendb")).toBe("goldendb");
+    expect(resolveConnectionDriverType("custom", "ClickHouse")).toBe(
+      "clickhouse",
+    );
     expect(resolveConnectionDriverType("custom", "")).toBe("");
   });
 

frontend/src/utils/customConnectionDsn.test.ts

@@ -34,4 +34,12 @@ describe('shouldAllowBlankCustomDsn', () => {
       clearStoredSecret: true,
     })).toBe(true);
   });
+
+  it('accepts a JDBC-style ClickHouse DSN for the backend compatibility adapter', () => {
+    expect(shouldAllowBlankCustomDsn({
+      dsnInput: 'jdbc:clickhouse://localhost:8123/default',
+      hasStoredSecret: false,
+      clearStoredSecret: false,
+    })).toBe(true);
+  });
 });

frontend/src/utils/dataSourceCapabilities.test.ts

@@ -31,6 +31,18 @@ describe('dataSourceCapabilities', () => {
     });
   });
 
+  it('uses ClickHouse capabilities for a custom ClickHouse JDBC connection', () => {
+    expect(getDataSourceCapabilities({ type: 'custom', driver: 'clickhouse' })).toMatchObject({
+      type: 'clickhouse',
+      supportsQueryEditor: true,
+      supportsExplainDiagnosis: true,
+      supportsSqlQueryExport: true,
+      supportsCreateDatabase: true,
+      supportsDropDatabase: true,
+      forceReadOnlyQueryResult: true,
+    });
+  });
+
   it('only enables execution-plan diagnosis for backend-supported SQL dialects', () => {
     expect(getDataSourceCapabilities({ type: 'goldendb' }).supportsExplainDiagnosis).toBe(true);
     expect(getDataSourceCapabilities({ type: 'custom', driver: 'greatdb' }).supportsExplainDiagnosis).toBe(true);

frontend/src/utils/driverImportGuidance.test.ts

@@ -141,6 +141,8 @@ describe('driver import guidance', () => {
     expect(helpText).toContain('pgx');
     expect(helpText).toContain('open_gauss');
     expect(helpText).toContain('oceanbase');
+    expect(helpText).toContain('clickhouse');
+    expect(helpText).toContain('jdbc:clickhouse://');
     expect(helpText).toContain('Go database/sql');
     expect(helpText).toContain('ODBC/JDBC');
     expect(helpText).toContain('JDBC Jar');