Supersedes decision 17, which expected endpoints to appear one at a time.
Nothing calls /api at all, so even that would be handlers with no callers and
golden tests guarding shapes nothing reads.
The contract stays in the spec as a design — it is what stops the shape
changing under a future client — marked as not built so the spec doesn't
claim behaviour the code lacks. later.md records what to build first when a
consumer appears.
Esa Kataja
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