Fix worker getting stuck during sync: add timeouts, stuck detection, and safety limits

- Add invokeWithTimeout wrapper for TDLib API calls (2min timeout per call)
- Add stuck detection to getChannelMessages: break if from_message_id doesn't advance
- Add stuck detection to getTopicMessages: same protection for topic scanning
- Add stuck detection to getForumTopicList: break if pagination offsets don't advance
- Add max page limit (5000) to all scanning loops to prevent infinite pagination
- Add mutex wait timeout (30min) to prevent indefinite blocking when holder hangs
- Add cycle timeout (4h default, configurable via WORKER_CYCLE_TIMEOUT_MINUTES)
- Fix end-of-page detection to use actual limit value instead of hardcoded 100

Co-authored-by: xCyanGrizzly <53275238+xCyanGrizzly@users.noreply.github.com>

worker/dist/tdlib/chats.d.ts

@@ -0,0 +1,31 @@
+import type { Client } from "tdl";
+export interface TelegramChatInfo {
+    chatId: bigint;
+    title: string;
+    type: "channel" | "supergroup" | "group" | "private" | "other";
+    isForum: boolean;
+    memberCount?: number;
+}
+/**
+ * Fetch all chats the account is a member of.
+ * Uses TDLib's getChats to load the chat list, then getChat for details.
+ * Filters to channels and supergroups only (groups/privates are not useful for ingestion).
+ */
+export declare function getAccountChats(client: Client): Promise<TelegramChatInfo[]>;
+/**
+ * Generate an invite link for a chat. The account must be an admin or have
+ * invite link permissions.
+ */
+export declare function generateInviteLink(client: Client, chatId: bigint): Promise<string>;
+/**
+ * Create a new supergroup (private group) via TDLib.
+ * Returns the chat ID and title.
+ */
+export declare function createSupergroup(client: Client, title: string): Promise<{
+    chatId: bigint;
+    title: string;
+}>;
+/**
+ * Join a chat using an invite link.
+ */
+export declare function joinChatByInviteLink(client: Client, inviteLink: string): Promise<void>;