更新依赖项，优化 OAuth2 服务，添加 PKCE 支持，增强 OIDC 处理器，新增客户端注册和令牌管理端点，改进数据库模型以支持新功能。

models/client.go

@@ -3,19 +3,30 @@ package models
 import (
 	"time"
 
+	"gorm.io/datatypes"
 	"gorm.io/gorm"
 )
 
 type Client struct {
 	gorm.Model
-	ClientID     string   `gorm:"uniqueIndex;not null"`
-	ClientSecret string   `gorm:"not null"`
-	RedirectURIs []string `gorm:"type:json"`
-	GrantTypes   []string `gorm:"type:json"`
-	Scopes       []string `gorm:"type:json"`
-	IsActive     bool     `gorm:"default:true"`
-	CreatedAt    time.Time
-	UpdatedAt    time.Time
+	ClientID                string         `gorm:"uniqueIndex;not null"`
+	ClientSecret            string         `gorm:"not null"`
+	RedirectURIs            datatypes.JSON `gorm:"type:json"`
+	TokenEndpointAuthMethod string         `gorm:"not null"`
+	GrantTypes              datatypes.JSON `gorm:"type:json"`
+	ResponseTypes           datatypes.JSON `gorm:"type:json"`
+	ClientName              string         `gorm:"type:varchar(255)"`
+	ClientURI               string         `gorm:"type:varchar(255)"`
+	LogoURI                 string         `gorm:"type:varchar(255)"`
+	Scopes                  datatypes.JSON `gorm:"type:json"`
+	Contacts                datatypes.JSON `gorm:"type:json"`
+	TosURI                  string         `gorm:"type:varchar(255)"`
+	PolicyURI               string         `gorm:"type:varchar(255)"`
+	SoftwareID              string         `gorm:"type:varchar(255)"`
+	SoftwareVersion         string         `gorm:"type:varchar(255)"`
+	IsActive                bool           `gorm:"default:true"`
+	CreatedAt               time.Time
+	UpdatedAt               time.Time
 }
 
 func (c *Client) TableName() string {