The image module is not tied to OpenRouter any more

`IMAGE_API_BASE_URL` decides where the image requests go. The default is still
OpenRouter — one key, many models, and the model list in the admin area fills
itself in — but the request body was already written in the OpenAI image shape,
so pointing it at a LiteLLM gateway, a company proxy or a server of your own
works. `GET /images/models` is an OpenRouter route; a base that answers 404 is
treated as "cannot list models", not as an error, and the model id is typed
instead. `IMAGE_API_KEY` is the new name; `OPENROUTER_API_KEY` is still read so
existing instances keep working.

Also: the seeded example recipes now show four different task combinations
rather than four sizes — clean up, poster, cut out to transparent PNG, sticker
with contour, square for social. They are examples to read and replace.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Nh4A79bbqT9dcd2inzYUdg

docker-compose.full.yaml

@@ -35,6 +35,8 @@ services:
       ADMIN_USERNAME: "${ADMIN_USERNAME:-admin}"
       ADMIN_PASSWORD: "${ADMIN_PASSWORD:-}"
 
+      IMAGE_API_KEY: "${IMAGE_API_KEY:-}"
+      IMAGE_API_BASE_URL: "${IMAGE_API_BASE_URL:-https://openrouter.ai/api/v1}"
       OPENROUTER_API_KEY: "${OPENROUTER_API_KEY:-}"
       TELEGRAM_BOT_TOKEN: "${TELEGRAM_BOT_TOKEN:-}"
       DELIVERY_DEFAULT_FOLDER: "${DELIVERY_DEFAULT_FOLDER:-klarbild}"