增加ai配置和ai广场功能

go/models/platform_ai_chat.go

@@ -0,0 +1,30 @@
+package models
+
+import "time"
+
+// PlatformAiChatSession 平台 AI Playground 会话
+type PlatformAiChatSession struct {
+	ID         uint64     `orm:"column(id);pk;auto" json:"id"`
+	Title      string     `orm:"column(title);size(100)" json:"title"`
+	ProviderID uint64     `orm:"column(provider_id)" json:"provider_id"`
+	Model      string     `orm:"column(model);size(100)" json:"model"`
+	IsTop      int8       `orm:"column(is_top);default(0)" json:"is_top"` // 1-置顶
+	CreateTime time.Time  `orm:"column(create_time);auto_now_add;type(datetime)" json:"create_time"`
+	UpdateTime time.Time  `orm:"column(update_time);auto_now;type(datetime)" json:"update_time"`
+	DeleteTime *time.Time `orm:"column(delete_time);type(datetime);null" json:"delete_time"`
+}
+
+func (m *PlatformAiChatSession) TableName() string { return "yz_platform_ai_chat_session" }
+
+// PlatformAiChatMessage 平台 AI 会话消息
+type PlatformAiChatMessage struct {
+	ID         uint64    `orm:"column(id);pk;auto" json:"id"`
+	SessionID  uint64    `orm:"column(session_id)" json:"session_id"`
+	Role       string    `orm:"column(role);size(20)" json:"role"`
+	Content    string    `orm:"column(content);type(text)" json:"content"` // user 存原始 content JSON（含附件）；assistant 存纯文本
+	Think      string    `orm:"column(think);type(text)" json:"think"`     // assistant 思考过程
+	Seq        int       `orm:"column(seq)" json:"seq"`
+	CreateTime time.Time `orm:"column(create_time);auto_now_add;type(datetime)" json:"create_time"`
+}
+
+func (m *PlatformAiChatMessage) TableName() string { return "yz_platform_ai_chat_message" }