首次提交：初始化项目代码

internal/router/api_chat.go

@@ -0,0 +1,12 @@
+package router
+
+import "github.com/gin-gonic/gin"
+
+// setupChatAPIRoutes 配置聊天相关 API 路由
+func (r *Router) setupChatAPIRoutes(api *gin.RouterGroup) {
+	chatGroup := api.Group("/chat")
+	{
+		chatGroup.POST("", r.chatHandler.Chat)
+		chatGroup.GET("/history", r.chatHandler.GetChatHistory)
+	}
+}