feat: LokiDeploy 初始提交 - 轻量级 K8s Loki 部署平台

Go(Gin) + React(Vite + shadcn/ui + Tailwind) 前后端分离，全中文 UI

- 集群管理：Kubeconfig / Token 双接入，kubectl + helm 部署
- 主机管理：SSH 密钥 / 密码双认证，CPU/内存/磁盘使用率监控，SSH 错误中文友好提示
- 存储配置、部署管理、系统设置
- Docker 镜像内置 kubectl + helm，开箱即用
- run.sh 一键启停（start/stop/restart/status）

Co-Authored-By: Claude <noreply@anthropic.com>

backend/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"log"
+
+	"lokideploy/config"
+	"lokideploy/models"
+	"lokideploy/routers"
+	"lokideploy/seed"
+)
+
+func main() {
+	cfg := config.GetConfig()
+
+	log.Println("Initializing database...")
+	if err := models.InitDB(); err != nil {
+		log.Fatalf("Failed to init DB: %v", err)
+	}
+
+	log.Println("Seeding default data...")
+	seed.Seed()
+
+	r := routers.SetupRouter()
+
+	log.Printf("LokiDeploy starting on port %s", cfg.ServerPort)
+	log.Printf("API: http://localhost:%s/api/v1", cfg.ServerPort)
+	log.Printf("Default login: admin / admin123")
+
+	if err := r.Run(":" + cfg.ServerPort); err != nil {
+		log.Fatalf("Server failed: %v", err)
+	}
+}