Vercel Monitor

Monitor one immutable Vercel deployment for the remotion project and notify the current task when that exact deployment becomes ready or fails.

Non-negotiable rules

Never infer deployment state from an HTTP response. A branch preview alias can return 200 from the previous deployment while the new deployment is building.
Never monitor a branch preview alias. It is movable and can resolve to an older or newer deployment.
Pin the monitor to a Vercel deployment ID (dpl_...) or the immutable automatic deployment hostname (<project>-<random>-<scope>.vercel.app).
Read the machine-readable Vercel deployment state. Do not parse human CLI output.
Default to the remotion project and the remotion Vercel scope. Ignore the bugs project unless the user explicitly asks for it.