第 1 阶段：用户与认证, mock登陆ok

backend/cmd/api/main.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"hfb_sys/backend/internal/config"
+	"hfb_sys/backend/internal/database"
 	"hfb_sys/backend/internal/router"
 
 	"go.uber.org/zap"
@@ -27,7 +28,28 @@ func main() {
 		_ = logger.Sync()
 	}()
 
-	engine := router.New(cfg, logger)
+	var deps router.Dependencies
+	db, err := database.OpenMySQL(cfg.MySQLDSN)
+	if err != nil {
+		logger.Warn("mysql unavailable; database-backed APIs will return 503", zap.Error(err))
+	} else {
+		deps.DB = db
+	}
+	redisClient, err := database.OpenRedis(context.Background(), database.RedisConfig{
+		Addr:     cfg.RedisAddr,
+		Password: cfg.RedisPassword,
+		DB:       cfg.RedisDB,
+	})
+	if err != nil {
+		logger.Warn("redis unavailable; redis-backed APIs will return 503", zap.Error(err))
+	} else {
+		deps.Redis = redisClient
+		defer func() {
+			_ = redisClient.Close()
+		}()
+	}
+
+	engine := router.New(cfg, deps, logger)
 	server := &http.Server{
 		Addr:              cfg.AppAddr,
 		Handler:           engine,