Add per-endpoint unit tests for the insights layout, medications layout, and
coach about-me write guards: an interleaved stale-base writer gets a 409 and
changes nothing, a tokenless request still writes (older-client compatibility),
the fresh token is echoed, and a malformed token 422s. Cover the client token
echo, the two 409 dispositions, and the insights read that must keep the token
through the resolver. Refresh the CHANGELOG and the generated OpenAPI spec.
Extract the dashboard-layout optimistic-concurrency mechanism (issue #581)
into a shared server helper (takeBaseToken plus guardedUserUpdate /
guardedRowUpdate) and a client helper (readUpdatedAtToken, withBaseToken,
isConflict). Retrofit the dashboard-widgets route onto the helper and apply the
same guard to the insights layout, medications layout, and coach about-me write
endpoints.
A request that omits the base token keeps the byte-identical unconditional
write, so older clients are unaffected. Document the contract in the OpenAPI
registry, including the dashboard-widgets path that was previously absent.
Marc-André Bombeck