feat: add Telegram integration with forum topic support and creator tracking

Adds full Telegram ZIP ingestion pipeline: TDLib worker service scans source
channels for archive files, deduplicates by content hash, extracts metadata,
uploads to archive channel, and indexes in Postgres. Forum supergroups are
scanned per-topic with topic names used as creator. Filename-based creator
extraction (e.g. "Mammoth Factory - 2026-01.zip") serves as fallback.

Includes admin UI for managing accounts/channels, simplified account setup
(API credentials via env vars), auth code/password submission dialog,
package browser with creator column, and live ingestion activity tracking.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

worker/src/index.ts

@@ -0,0 +1,50 @@
+import { mkdir } from "fs/promises";
+import { config } from "./util/config.js";
+import { logger } from "./util/logger.js";
+import { markStaleRunsAsFailed } from "./db/queries.js";
+import { cleanupTempDir } from "./worker.js";
+import { startScheduler, stopScheduler } from "./scheduler.js";
+import { db, pool } from "./db/client.js";
+
+const log = logger.child({ module: "main" });
+
+async function main(): Promise<void> {
+  log.info("DragonsStash Telegram Worker starting");
+  log.info({ config: { ...config, databaseUrl: "***" } }, "Configuration loaded");
+
+  // Ensure temp directory exists
+  await mkdir(config.tempDir, { recursive: true });
+  await mkdir(config.tdlibStateDir, { recursive: true });
+
+  // Clean up stale state
+  await cleanupTempDir();
+  await markStaleRunsAsFailed();
+
+  // Start the scheduler
+  await startScheduler();
+}
+
+// Graceful shutdown
+function shutdown(signal: string): void {
+  log.info({ signal }, "Shutdown signal received");
+  stopScheduler();
+
+  // Close DB connections
+  Promise.all([db.$disconnect(), pool.end()])
+    .then(() => {
+      log.info("Shutdown complete");
+      process.exit(0);
+    })
+    .catch((err) => {
+      log.error({ err }, "Error during shutdown");
+      process.exit(1);
+    });
+}
+
+process.on("SIGTERM", () => shutdown("SIGTERM"));
+process.on("SIGINT", () => shutdown("SIGINT"));
+
+main().catch((err) => {
+  log.fatal({ err }, "Worker failed to start");
+  process.exit(1);
+});