-- Vision model setting (#81): the model that reads a photographed seed packet.
--
-- Separate from agent_model because it's a different capability — extracting
-- structured fields from an image needs a vision-capable model, which the chat
-- model may not be. Same "inherit from env unless set" contract as agent_model:
-- '' falls back to PANSY_VISION_MODEL, then the feature is simply not offered.
--
-- Like agent_model, the API KEY is NOT stored here — the vision model runs
-- against the same OLLAMA_CLOUD_API_KEY from the environment.
ALTER TABLE instance_settings ADD COLUMN vision_model TEXT NOT NULL DEFAULT '';