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/archive/detect.d.ts

@@ -0,0 +1,15 @@
+export type ArchiveFormat = "ZIP" | "RAR";
+export interface MultipartInfo {
+    baseName: string;
+    partNumber: number;
+    format: ArchiveFormat;
+    pattern: "ZIP_NUMBERED" | "ZIP_LEGACY" | "RAR_PART" | "RAR_LEGACY" | "SINGLE";
+}
+/**
+ * Detect if a filename is an archive and extract multipart info.
+ */
+export declare function detectArchive(fileName: string): MultipartInfo | null;
+/**
+ * Check if a filename looks like any archive attachment we should process.
+ */
+export declare function isArchiveAttachment(fileName: string): boolean;