v0.53.1

Fixed — seedance-2.5 first-and-last-frame is refused by name on Solana

0.53.0 advertised last_frame_url on seedance-2.5 on every rail.
sol.blockrun.ai is a separate deploy that has not added 2.5 to its
first-and-last-frame list: it answers 400 "does not support first-and-last-frame video" before quoting, while blockrun.ai quotes the same body (unsigned
probes, 2026-09-29; 2.0, 2.0-fast, 2.0-mini and 1.5-pro quote on both). No
payment was ever at risk, but the caller got "the endpoint did not return a
quote". The tool now refuses that one combination on the Solana wallet rail,
names Base and the account rail as the places that serve it, and lists the
models that work on Solana. The parameter description and
docs/seedance-capabilities.md say the same.

The output controls (output_format, bitrate_mode, watermark,
return_last_frame) were probed on both gateways as well. Both validate them
in their request schemas, so they are not silently dropped on Solana.