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

internal/model/comment.go

@@ -0,0 +1,14 @@
+package model
+
+import "gorm.io/gorm"
+
+type Comment struct {
+	gorm.Model
+	UserID     uint   `gorm:"index"`                           // 评论的用户ID
+	User       User   `gorm:"foreignKey:UserID;references:ID"` // 关联的用户
+	TargetID   uint   `gorm:"index"`                           // 目标ID
+	TargetType string `gorm:"index"`                           // 目标类型，如 "post", "page"
+	ReplyID    uint   `gorm:"index"`                           // 回复的评论ID
+	Content    string `gorm:"type:text"`                       // 评论内容
+	Depth      int    `gorm:"default:0"`                       // 评论的层级深度
+}