An external id is half of every ingest dedup key — (userId, source,
externalId), (userId, externalSource, externalId), (userId, type,
source, externalId). Re-posting the same triple is idempotent and
returns the existing row, which holds only while the id is stable
across client launches. A client that serialised an opaque platform
object with its default object description sent a per-allocation
memory address instead, so no sweep ever matched its own earlier row
and each one minted a fresh record: a live instance grew 23 phantom
medications in a day, none of which could collect a dose, because the
dose side resolved through the same rotating string.
Add one shared classifier for identifiers that provably cannot be an
identity — an angle-bracketed object description carrying a hex
pointer, a bare 0x address, and a blank value — and wire it at every
surface that accepts a client-supplied externalId.
Single-entry creates refuse through the schema, so the client gets the
standard 422 multi-issue envelope with a message naming the shape it
sent and what to send instead. Batch and bulk surfaces classify per
entry and report the offending row as skipped with reason
unstable_external_id, leaving the rest of the payload to land: one bad
row must not stop a sync. Every refusal carries pinned wide-event meta
(count, shape, surface) and never the id itself.
A structural guard freezes both routes into the floor: a request-side
externalId declaration either applies the field check or carries a
marker naming the file that checks it per entry, and the guard verifies
that file really does. The backup-restore payload is the one exemption,
with its reason recorded — it replays ids the server itself wrote.
Narrow the workout create schema's source to the client-writable set
(MANUAL, APPLE_HEALTH), matching the measurement write surfaces, so a
client cannot forge a server-owned source into the cross-source picker.
Apply the single-entry plausibility bound to the measurement batch
timestamps so a backdated or future-dated row can no longer slip past
the batch path. Regenerate the OpenAPI contract.
One-shot prettier pass so the new format:check gate starts from a clean
baseline. Formatting only — no behaviour change. Generator-owned and
vendored artifacts stay untouched via .prettierignore.
Extend POST /api/workouts/batch with an optional per-workout `samples`
array — a route-independent heart-rate series so indoor workouts still
yield a strain-relevant signal. Each entry is `{ t, hr?, speedMs?,
power?, cadence? }`; the array is capped at 30 000 points
(MAX_WORKOUT_HR_SAMPLES), covering a long endurance session sampled at
1 Hz while bounding the largest new workout-side write stream the same
way the 20 000-point route cap bounds the geometry.
Persistence rides the existing route-attachment path: the freshly
written workout id is resolved once (by composite key, or the manual
tuple), then both the route geometry and the HR series attach by FK
with skipDuplicates so a re-submitted batch stays idempotent. A workout
may carry both a GPS route and a canonical HR series, or just one.
GET /api/workouts/{id} returns the series alongside the route. OpenAPI
regenerated.
`samples` keeps first-write-wins/overwrite parity with the workout row
it hangs off: the 1:1 FK plus skipDuplicates means a re-ingest of an
existing workout never duplicates or mutates its series.
Largest feature delta in the v1.4.x line. Insights expands into seven dedicated metric sub-pages; GLP-1 medication tracking lands end-to-end (drug-level chart with Research Mode acknowledgment, EMA titration ladder, cadence + compliance, side-effect taxonomy, pen/vial inventory); cross-source priority becomes a two-axis resolver; per-user timezone threads through ten analytics surfaces; Withings activity + sleep v2 sync; onboarding rebuilt as a nested-route wizard; Personal Records ship end-to-end; Health Score provenance accordion; Coach runs native first-party prompts across six locales with a 1800-assertion refusal-probe matrix; OpenAPI drift gate hard-fails; multi-arch GHCR image. Migrations 0043 through 0060 are additive and forward-only. PROMPT_VERSION 4.24.0 → 4.25.0 with GROUND RULE 9 (refuses dose recommendations) and GROUND RULE 15 (refuses drug-level estimates with MDR + MDCG 2021-24 cites).
See CHANGELOG.md for the full per-section delta.
Marc-André Bombeck