修复安装问题

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"flag"
 	"fmt"
 	"log"
 	"net"
@@ -17,8 +18,12 @@ import (
 )
 
 func main() {
+	// 0. Parse command-line flags.
+	configFlag := flag.String("config", "", "path to config file (default: OS-aware path)")
+	flag.Parse()
+
 	// 1. Load configuration (auto-creates if missing).
-	cfg := config.LoadConfig()
+	cfg := config.LoadConfig(*configFlag)
 
 	// 2. Initialize the database (auto-migrates, seeds admin).
 	db := models.InitDB(cfg)