feat: telegram bot (grammy webhook) — full parity channel

- pairing (admin code -> chat link), bundling of forwarded images via drafts+quiet-window sweeper
- recipe pick via inline keyboard, job (origin=telegram) creation, one summary reply with result files + links
- compressed-photo detection/flag; /start /help /rezepte /status
- webhook route (secret token), admin pairing-code + links endpoints, AdminApp telegram section
- worker notifies chat on completion; migration 002 adds jobs.telegram_chat_id; setupTelegram on init

src/worker.ts

@@ -56,6 +56,14 @@ async function maybeComplete(jobId: string): Promise<void> {
       [jobId]);
     // Picdrop-Auslieferung für alle offenen Positionen anstoßen.
     try { await deliverPendingForJob(jobId); } catch (e) { console.error('[worker] Auslieferung:', e); }
-    // TODO: Benachrichtigung (Telegram/n8n).
+    // Telegram-Rückmeldung, wenn der Auftrag aus einem Chat kam.
+    const jt = await one<{ origin: string; telegram_chat_id: string | null }>(
+      'SELECT origin, telegram_chat_id FROM jobs WHERE id=$1', [jobId]);
+    if (jt?.origin === 'telegram' && jt.telegram_chat_id) {
+      try {
+        const { notifyJobDone } = await import('./lib/telegram');
+        await notifyJobDone(Number(jt.telegram_chat_id), jobId);
+      } catch (e) { console.error('[worker] Telegram-Notify:', e); }
+    }
   }
 }