qwen3/pro-text-to-imagetext-to-image8 paramsSLUG TRAP: the doc page is `market/qwen3-pro/text-to-image` but the `model` enum reads `qwen3/pro-text-to-image`. The tier is a prefix on the CAPABILITY, not on the family — a `qwen3-pro/` slug is a 422. Input schema is byte-identical to qwen3/text-to-image.