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/query.go

@@ -62,7 +62,16 @@ func (that *HoTimeDB) queryWithRetry(query string, retried bool, args ...interfa
 	processedArgs := that.processArgs(args)
 
 	if that.testTx != nil {
+		if that.testMu != nil { that.testMu.Lock() }
 		resl, err = that.testTx.Query(query, processedArgs...)
+		that.LastErr.SetError(err)
+		if err != nil {
+			if that.testMu != nil { that.testMu.Unlock() }
+			return nil
+		}
+		result := that.Row(resl)
+		if that.testMu != nil { that.testMu.Unlock() }
+		return result
 	} else if that.Tx != nil {
 		resl, err = that.Tx.Query(query, processedArgs...)
 	} else {
@@ -71,7 +80,6 @@ func (that *HoTimeDB) queryWithRetry(query string, retried bool, args ...interfa
 
 	that.LastErr.SetError(err)
 	if err != nil {
-		// 如果还没重试过，尝试 Ping 后重试一次
 		if !retried {
 			if pingErr := db.Ping(); pingErr == nil {
 				return that.queryWithRetry(query, true, args...)
@@ -120,7 +128,9 @@ func (that *HoTimeDB) execWithRetry(query string, retried bool, args ...interfac
 	processedArgs := that.processArgs(args)
 
 	if that.testTx != nil {
+		if that.testMu != nil { that.testMu.Lock() }
 		resl, e = that.testTx.Exec(query, processedArgs...)
+		if that.testMu != nil { that.testMu.Unlock() }
 	} else if that.Tx != nil {
 		resl, e = that.Tx.Exec(query, processedArgs...)
 	} else {
@@ -128,8 +138,11 @@ func (that *HoTimeDB) execWithRetry(query string, retried bool, args ...interfac
 	}
 
 	that.LastErr.SetError(e)
-	// 判断是否连接断开了，如果还没重试过，尝试重试一次
 	if e != nil {
+		// testTx 模式下不走连接池重试，避免 busy buffer
+		if that.testTx != nil {
+			return resl, that.LastErr
+		}
 		if !retried {
 			if pingErr := that.DB.Ping(); pingErr == nil {
 				return that.execWithRetry(query, true, args...)