Telegram Webhookによるボット操作機能を追加（課題の追加・完了・一覧・スヌーズ対応）

internal/router/router.go

@@ -221,6 +221,12 @@ func Setup(cfg *config.Config) *gin.Engine {
 	apiHandler := handler.NewAPIHandler()
 	apiRecurringHandler := handler.NewAPIRecurringHandler()
 
+	if cfg.Notification.TelegramBotToken != "" && cfg.Notification.TelegramWebhookSecret != "" {
+		telegramService := service.NewTelegramService(notificationService, service.NewAssignmentService())
+		telegramHandler := handler.NewTelegramHandler(telegramService, cfg.Notification.TelegramWebhookSecret)
+		r.POST("/api/telegram/webhook", telegramHandler.Webhook)
+	}
+
 	r.GET("/captcha/:file", gin.WrapH(captcha.Server(captcha.StdWidth, captcha.StdHeight)))
 	r.GET("/captcha-new", func(c *gin.Context) {
 		id := captcha.New()