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/rar-reader.js

@@ -0,0 +1,77 @@
+import { execFile } from "child_process";
+import { promisify } from "util";
+import path from "path";
+import { childLogger } from "../util/logger.js";
+const execFileAsync = promisify(execFile);
+const log = childLogger("rar-reader");
+/**
+ * Parse output of `unrar l -v <file>` to extract file metadata.
+ * unrar automatically discovers sibling parts when they're co-located.
+ */
+export async function readRarContents(firstPartPath) {
+    try {
+        const { stdout } = await execFileAsync("unrar", ["l", "-v", firstPartPath], {
+            timeout: 30000,
+            maxBuffer: 10 * 1024 * 1024, // 10MB for very large archives
+        });
+        return parseUnrarOutput(stdout);
+    }
+    catch (err) {
+        log.warn({ err, file: firstPartPath }, "Failed to read RAR contents");
+        return []; // Fallback: return empty on error
+    }
+}
+/**
+ * Parse the tabular output of `unrar l -v`.
+ *
+ * Example output format:
+ *  Archive: test.rar
+ *  Details: RAR 5
+ *
+ *   Attributes      Size     Packed Ratio   Date   Time   CRC-32  Name
+ *  ----------- ---------  --------- ----- -------- ----- --------  ----
+ *   ...A....      12345      10234  83%  2024-01-15 10:30 DEADBEEF  folder/file.stl
+ *  ----------- ---------  --------- ----- -------- ----- --------  ----
+ */
+function parseUnrarOutput(output) {
+    const entries = [];
+    const lines = output.split("\n");
+    let inFileList = false;
+    let separatorCount = 0;
+    for (const line of lines) {
+        const trimmed = line.trim();
+        // Detect separator lines (------- pattern)
+        if (/^-{5,}/.test(trimmed)) {
+            separatorCount++;
+            if (separatorCount === 1) {
+                inFileList = true;
+            }
+            else if (separatorCount >= 2) {
+                inFileList = false;
+            }
+            continue;
+        }
+        if (!inFileList)
+            continue;
+        // Parse file entry line
+        // Format: Attributes Size Packed Ratio Date Time CRC Name
+        const match = trimmed.match(/^\S+\s+(\d+)\s+(\d+)\s+\d+%\s+\S+\s+\S+\s+([0-9A-Fa-f]+)\s+(.+)$/);
+        if (match) {
+            const [, uncompressedStr, compressedStr, crc32, filePath] = match;
+            // Skip directory entries (typically end with / or have size 0 with dir attributes)
+            if (filePath.endsWith("/") || filePath.endsWith("\\"))
+                continue;
+            const ext = path.extname(filePath).toLowerCase();
+            entries.push({
+                path: filePath,
+                fileName: path.basename(filePath),
+                extension: ext ? ext.slice(1) : null,
+                compressedSize: BigInt(compressedStr),
+                uncompressedSize: BigInt(uncompressedStr),
+                crc32: crc32.toLowerCase(),
+            });
+        }
+    }
+    return entries;
+}
+//# sourceMappingURL=rar-reader.js.map