feat: ToNav-go v1.0.0 - 内部服务导航系统

功能:
- 前台导航: 分类Tab切换、实时搜索、健康状态指示、响应式适配
- 后台管理: 服务/分类CRUD、系统设置、登录认证(bcrypt)
- 健康检查: 定时检测(5min)、独立检查URL、三态指示(在线/离线/未检测)
- 云端备份: WebDAV上传/下载/恢复/删除、定时自动备份、本地备份管理

技术栈: Go + Gin + GORM + SQLite

database/seed.go

@@ -0,0 +1,44 @@
+package database
+
+import (
+	"tonav-go/models"
+	"golang.org/x/crypto/bcrypt"
+)
+
+func Seed() {
+	// 1. 初始化管理员 (admin / admin123)
+	var count int64
+	DB.Model(&models.User{}).Count(&count)
+	if count == 0 {
+		hash, _ := bcrypt.GenerateFromPassword([]byte("admin123"), bcrypt.DefaultCost)
+		DB.Create(&models.User{
+			Username:           "admin",
+			Password:           string(hash),
+			MustChangePassword: true,
+		})
+	}
+
+	// 2. 初始化分类
+	var catCount int64
+	DB.Model(&models.Category{}).Count(&catCount)
+	if catCount == 0 {
+		categories := []models.Category{
+			{Name: "内网服务", SortOrder: 100},
+			{Name: "开发工具", SortOrder: 90},
+			{Name: "测试环境", SortOrder: 80},
+		}
+		DB.Create(&categories)
+	}
+
+	// 3. 初始设置
+	var setCount int64
+	DB.Model(&models.Setting{}).Count(&setCount)
+	if setCount == 0 {
+		settings := []models.Setting{
+			{Key: "webdav_url", Value: "https://chfs.ouaone.top/webdav/openclaw/upload/tonav-go/"},
+			{Key: "webdav_user", Value: "openclaw"},
+			{Key: "webdav_password", Value: "Khh13579"},
+		}
+		DB.Create(&settings)
+	}
+}