Veto if any function, method, or class presented as finished is actually a
placeholder: a body that is only `pass`, only `...`, only `raise
NotImplementedError`, a TODO/FIXME comment standing in for real logic, or a
function that returns a hardcoded/fake value instead of computing the real
result it claims to compute. Do NOT veto legitimate abstract methods,
interface stubs that are clearly documented as such, or partial work that is
explicitly marked in-progress (e.g. a TODO alongside a real, working
fallback). Only veto when the snapshot presents incomplete work as complete.
