fix: add action gate check and config type for createForumTopic

Address review feedback:
- Add isActionEnabled() gate in telegram-actions.ts
- Add gate() check in telegram adapter listActions
- Add createForumTopic to TelegramActionConfig type

src/agents/tools/telegram-actions.ts

@@ -329,6 +329,9 @@ export async function handleTelegramAction(
   }
 
   if (action === "createForumTopic") {
+    if (!isActionEnabled("createForumTopic")) {
+      throw new Error("Telegram createForumTopic is disabled.");
+    }
     const chatId = readStringOrNumberParam(params, "chatId", {
       required: true,
     });

src/channels/plugins/actions/telegram.ts

@@ -60,7 +60,9 @@ export const telegramMessageActions: ChannelMessageActionAdapter = {
       actions.add("sticker");
       actions.add("sticker-search");
     }
+    if (gate("createForumTopic")) {
       actions.add("topic-create");
+    }
     return Array.from(actions);
   },
   supportsButtons: ({ cfg }) => {

src/config/types.telegram.ts

@@ -18,6 +18,8 @@ export type TelegramActionConfig = {
   editMessage?: boolean;
   /** Enable sticker actions (send and search). */
   sticker?: boolean;
+  /** Enable forum topic creation. */
+  createForumTopic?: boolean;
 };
 
 export type TelegramNetworkConfig = {