使用 pg 替换 sql

backend/cmd/server/main.go

@@ -2,8 +2,6 @@ package main
 
 import (
 	"log"
-	"os"
-	"path/filepath"
 
 	"affiliate_dash/internal/config"
 	"affiliate_dash/internal/handler"
@@ -15,7 +13,7 @@ import (
 	"affiliate_dash/internal/service"
 
 	"github.com/gin-gonic/gin"
-	"gorm.io/driver/sqlite"
+	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
 )
 
@@ -33,11 +31,7 @@ func main() {
 
 	gin.SetMode(cfg.Mode)
 
-	if err := os.MkdirAll(filepath.Dir(cfg.DBPath), 0o755); err != nil {
-		log.Fatalf("create data dir: %v", err)
-	}
-
-	db, err := gorm.Open(sqlite.Open(cfg.DBPath), &gorm.Config{
+	db, err := gorm.Open(postgres.Open(cfg.DatabaseURL), &gorm.Config{
 		Logger: applog.NewGormLogger(cfg.Mode),
 	})
 	if err != nil {
@@ -79,6 +73,7 @@ func main() {
 	r := router.Setup(h)
 	addr := ":" + cfg.Port
 	log.Printf("游戏皮肤分销系统 API 启动: http://localhost%s", addr)
+	log.Printf("数据库: PostgreSQL")
 	log.Printf("默认管理员: admin / admin123")
 	log.Printf("开放接口鉴权: X-Api-Key + X-Timestamp + X-Nonce + X-Sign (HMAC-SHA256)")
 	if cfg.OpenAPIDebug {