refactor(db): 增强测试事务和缓存管理

- 在 HoTimeDB 中新增 testMu 互斥锁，确保 testTx 的串行访问，解决并发冲突问题
- 在 BeginTestTx 中初始化 testMu，确保测试事务的安全性
- 在 HoTimeCache 中新增 DisableDbCache 方法，测试模式下禁用 DB 和 Redis 缓存，避免锁等待超时
- 更新 Select 方法，确保在 testTx 激活时跳过缓存逻辑，提升测试稳定性
- 优化 Swagger 生成逻辑，支持模块化输出和导航页生成
- 移除冗余的调试日志代码，提升代码整洁性

db/transaction.go

@@ -32,17 +32,24 @@ func (that *HoTimeDB) Action(action func(db HoTimeDB) (isSuccess bool)) (isSucce
 		mu:          sync.RWMutex{},
 		limitMu:     sync.Mutex{},
 		testTx:      that.testTx,
+		testMu:      that.testMu,
 	}
 
 	if that.testTx != nil {
 		spName := fmt.Sprintf("sp_%d", atomic.AddUint64(&savepointCounter, 1))
+		if that.testMu != nil { that.testMu.Lock() }
 		_, _ = that.testTx.Exec("SAVEPOINT " + spName)
+		if that.testMu != nil { that.testMu.Unlock() }
 		db.Tx = that.testTx
 		isSuccess = action(db)
 		if !isSuccess {
+			if that.testMu != nil { that.testMu.Lock() }
 			_, _ = that.testTx.Exec("ROLLBACK TO SAVEPOINT " + spName)
+			if that.testMu != nil { that.testMu.Unlock() }
 		} else {
+			if that.testMu != nil { that.testMu.Lock() }
 			_, _ = that.testTx.Exec("RELEASE SAVEPOINT " + spName)
+			if that.testMu != nil { that.testMu.Unlock() }
 		}
 		return isSuccess
 	}