[atomantic]

Summary

• Kling 4.0 and Kling 4.0 Flash join the Higgsfield video picker (text, start-frame and reference-image routes). Request shapes follow the input schemas published on Higgsfield's console model pages; Flash's endpoints reject unknown fields, so only schema fields are sent. Reference videos, Kling element ids and the video-edit route are not offered.
• Capability hints in the pickers: each Higgsfield option and fal suggestion now says whether it takes reference images (and how many), an end frame, and audio references, so an unsupported pick is visible before a render is refused.
• "Check for new models" button in the Higgsfield settings lists video families Higgsfield publishes that PortOS does not offer yet, with length, resolution and from-price. It reads the public pricing page (no API key, no provider call) and reports an unreadable page instead of "no new models".
• nearestRatio now ignores non-numeric ratios, so adaptive is only sent when explicitly chosen.

Testing

• npm run pregate passes (lint, structural guards, focused server and client tests).
• New tests pin the Kling 4 wire bodies per route, the capability hints, and the catalog parser against a synthetic page shaped like the real one.
• Not run locally: build, smoke, browser and DB suites (hosted CI). No real Kling 4 render was submitted.