⚡ implement user authentication and database initialization, add models for user, comment, label, and OIDC configuration

pkg/constant/constant.go

@@ -1,6 +1,10 @@
 package constant
 
 const (
-	ModeDev  = "dev"
-	ModeProd = "prod"
+	ModeDev   = "dev"
+	ModeProd  = "prod"
+	RoleUser  = "user"
+	RoleAdmin = "admin"
+
+	EnvVarPasswordSalt = "PASSWORD_SALT" // 环境变量：密码盐
 )