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>

docker-compose.dev.yml

@@ -15,5 +15,27 @@ services:
       timeout: 5s
       retries: 5
 
+  worker:
+    build:
+      context: .
+      dockerfile: worker/Dockerfile
+    environment:
+      - DATABASE_URL=postgresql://dragons:stash@db:5432/dragonsstash
+      - WORKER_INTERVAL_MINUTES=5
+      - WORKER_TEMP_DIR=/tmp/zips
+      - TDLIB_STATE_DIR=/data/tdlib
+      - WORKER_MAX_ZIP_SIZE_MB=4096
+      - LOG_LEVEL=debug
+      - TELEGRAM_API_ID=${TELEGRAM_API_ID}
+      - TELEGRAM_API_HASH=${TELEGRAM_API_HASH}
+    volumes:
+      - tdlib_dev_state:/data/tdlib
+      - tmp_dev_zips:/tmp/zips
+    depends_on:
+      db:
+        condition: service_healthy
+
 volumes:
   postgres_dev_data:
+  tdlib_dev_state:
+  tmp_dev_zips: