The measurements list already badges any row whose source is not MANUAL and
already builds its source filter from the shared enum, so both pick the new
value up on their own. What it needs is a name: `EXTERNAL` reads as a leaked
enum constant, and it is the only new value a user is expected to operate,
since it is an option in the filter and a badge on every bridged row.
Both label catalogues gain an entry. They are keyed by the enum, so a new
source without a label is a type error and the coverage guard fails the
suite — which is exactly what happened here, and is the reason this carries
a settings label too even though EXTERNAL sits on no priority ladder and so
never renders there.
The settings card's scope note and the Home Assistant guide both claimed
readings arrive "as if you had entered them by hand", which is no longer
true. Both now say the rows are marked as coming from an external device and
are still yours to correct, and the guide spells out that the payload must
not name a source at all.
The changelog entries go under Unreleased as Changed: v1.38.1 shipped the
token, so these describe a change to something people already have. They say
what that means in practice — rows written before this keep the old label
and cannot be sorted out afterwards, a batch re-push can duplicate because
the dedup key now carries the source, and an automation sending an explicit
`source` field has to drop it.
Since v1.30.17 there has been no self-service path to a token that can
write a measurement. That release made the Bearer scope default
fail-closed, which closed a real privilege-escalation hole, and removed
the generic mint at POST /api/tokens along with it. The generic mint had
been the only way to get a token that could reach /api/measurements, so
a local sensor pushed through Home Assistant or Node-RED lost its door
while the OAuth integrations kept theirs.
Add a narrow scope accepted by exactly two routes, both writes, both on
the holder's own record.
The scope constant is a leaf module beside the surface that consumes it,
matching FHIR_READ_SCOPE and the MCP scopes. requireRecordAuth grows an
options object rather than a sibling function, because the sharing
surface guard keys every leg on that one identifier and a second name
would mean two copies of the delegable declaration. AuthContext carries
the admitting scope as a single nullable string rather than the token's
permission array, so nothing downstream can re-derive an authorisation
decision from it.
A scoped credential is refused a record selector before any grant is
read. Placing the refusal above the sharing check rather than beside it
means no future widening of what a grant permits can reach one of these
tokens.
Rows are attributed MANUAL. An entry that explicitly names APPLE_HEALTH
is refused 422 rather than relabelled: that source is half the
(userId, type, source, externalId) dedup key the iOS client writes into,
it participates in the cross-source merge, and it gates the HealthKit
sync fields. For the same reason a scoped write no longer advances
User.lastSyncedAt, which the phone reads to size its undelivered window.
Also closes a narrower gap found while building this. The idempotency
wrapper resolved a replayed delegated response against a live grant
without considering which credential was presenting it, so a cached
response about a shared record could be returned to a token the handler
itself would refuse. No write was reachable that way; the response body
was.
Guards: T3 gains the mint site, T4's vocabulary gains the scope and
learns to read the requireRecordAuth form (without which this change
would open a way to widen a route that the closed vocabulary could not
see), and a new T5 freezes the set of delegable routes naming a scope.
The sharing surface guard's AST matcher reads only the first two
arguments, so it needed prose but no code.
Antiheld86