重构：文件系统模块化架构，优化应用启动流程

internal/dbclient/redis.go

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"time"
 
+	"go-desk/internal/common"
+
 	"github.com/redis/go-redis/v9"
 )
 
@@ -30,13 +32,13 @@ func NewRedisClient(config *RedisConfig) (*RedisClient, error) {
 		Addr:         addr,
 		Password:     config.Password,
 		DB:           config.DB,
-		DialTimeout:  5 * time.Second,
+		DialTimeout:  common.TimeoutConnect,
 		ReadTimeout:  3 * time.Second,
 		WriteTimeout: 3 * time.Second,
 	})
 
 	// 测试连接
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutConnect)
 	defer cancel()
 
 	if err := rdb.Ping(ctx).Err(); err != nil {