lab_generate_character_reference

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Generate the reference sheet for a character — six core views rendered from the sheet's `prompt_prefix_en`: detail (three-quarter close-up, the identity anchor), frontal (frontal close-up), profile, fullbody (front), fullbody_back (back view: hair and the back of the costume) and costume (the outfit on an invisible mannequin, NO person — use it where the costume is meant, never as a face reference). Back view and costume are derived from fullbody, everything else from detail. The poses pose_sitting, pose_walking, pose_action are optional extras for blocking — not part of the default run and not used as references for image or video models. A seventh view, 'detail_smile', is NOT in the default set and must be asked for: the same close-up with the mouth open and the teeth visible. Render it for every character who SPEAKS — otherwise the model invents the teeth and the jaw the first time they laugh, and the smile arrives as somebody else's mouth. It is an extra view for the mouth, never an identity anchor: a smiling reference carries its smile into every shot, funerals included. MEASURED 2026-09-15 (n=10, criterion fixed beforehand): the teeth land 10/10, but the PERSON only holds in about 4 of 10 even with the anchor active — two runs were plainly a different man. Generate it, then LOOK before you rely on it; the failure is obvious to the eye (a stranger's mouth on your character), not silent. THIS IS WHAT MAKES A SHEET USABLE: until it has run, lab_generate rejects the id as `character_refs`. Step 2 of 2 after lab_create_character. COSTS CREDITS — one provider call per view, so the default run is six. Pass `views` to render fewer. Takes about 25 s PER VIEW (the tool requests them one by one, anchor first), so a full run is 2–3 minutes. If a single request times out, the answer says `noch_in_arbeit` instead of failing: that view is still rendering and already paid for — check it with lab_get_character_sheet, do NOT re-run it. The sheet needs a `prompt_prefix_en`; the backend regenerates one on demand but only best-effort, and answers 400 if that fails too. Views whose image could not be mirrored to R2 are deliberately NOT saved and come back in `nicht_gespiegelt` — those views are missing, not broken, and a re-run renders only what you ask for.