重构：文件系统模块化架构，优化应用启动流程

internal/dbclient/mongo.go

@@ -4,7 +4,8 @@ import (
 	"context"
 	"fmt"
 	"net/url"
-	"time"
+
+	"go-desk/internal/common"
 
 	"go.mongodb.org/mongo-driver/bson"
 	"go.mongodb.org/mongo-driver/mongo"
@@ -107,11 +108,11 @@ func tryConnectMongo(config *MongoConfig, authSource, authMechanism string) (*Mo
 	// 客户端选项
 	clientOptions := options.Client().
 		ApplyURI(uri).
-		SetConnectTimeout(5 * time.Second).
-		SetServerSelectionTimeout(5 * time.Second)
+		SetConnectTimeout(common.TimeoutConnect).
+		SetServerSelectionTimeout(common.TimeoutConnect)
 
 	// 创建客户端
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutConnect)
 	defer cancel()
 
 	client, err := mongo.Connect(ctx, clientOptions)
@@ -169,7 +170,7 @@ func TestMongoConnectionWithOptions(host string, port int, username, password, d
 // Close 关闭连接
 func (c *MongoClient) Close() error {
 	if c.client != nil {
-		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutConnect)
 		defer cancel()
 		return c.client.Disconnect(ctx)
 	}

internal/dbclient/pool.go

@@ -5,8 +5,8 @@ import (
 	"encoding/json"
 	"fmt"
 	"sync"
-	"time"
 
+	"go-desk/internal/common"
 	"go-desk/internal/crypto"
 	"go-desk/internal/storage/models"
 )
@@ -84,7 +84,7 @@ func (p *ConnectionPool) GetRedisClient(conn *models.DbConnection) (*RedisClient
 	// 检查是否已存在
 	if client, ok := p.redisClients[conn.ID]; ok {
 		// 测试连接是否有效
-		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+		ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutPing)
 		defer cancel()
 		if err := client.client.Ping(ctx).Err(); err == nil {
 			return client, nil
@@ -140,7 +140,7 @@ func (p *ConnectionPool) GetMongoClient(conn *models.DbConnection) (*MongoClient
 	// 检查是否已存在
 	if client, ok := p.mongoClients[conn.ID]; ok {
 		// 测试连接是否有效
-		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+		ctx, cancel := context.WithTimeout(context.Background(), common.TimeoutPing)
 		defer cancel()
 		if err := client.client.Ping(ctx, nil); err == nil {
 			return client, nil

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 {