Fix sync: add missing tables, Linux date, token from env

Add production and consumption table migrations. Fix sync-month.sh
to use Linux date syntax and default to port 3030. Read Eloverblik
token from ELOVERBLIK_TOKEN env var with .token file fallback.
Mount .token into Docker container.

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

docker-compose.yml

@@ -5,4 +5,6 @@ services:
       - "3030:3030"
     env_file:
       - .env
+    volumes:
+      - ./.token:/app/.token:ro
     restart: unless-stopped