Pull Oura's daily_cycle_phases collection (undocumented in the published
OpenAPI spec, but confirmed live and auth-gated identically to every other
daily_* collection) on the existing hourly Oura poll. A luteal→follicular
transition, or a literal "menstrual" phase day, writes a single-day
CycleDayLog(flow=LIGHT, source=OURA) — the same conservative "logged but
unspecified intensity" marker the HealthKit unspecified-flow mapping uses.
Manual entries always win: the write only ever creates a day that has no
existing CycleDayLog row at all, regardless of source, and never updates a
row it did not create itself. No MenstrualCycle span is synthesised, mirroring
the Apple Health importer precedent. A 403/404 on the endpoint (the expected
outcome for most connections — Oura's reproductive-health resources are all
absent from its public spec) is swallowed without touching the rest of the
Oura connection's sync status.
No migration: reuses the existing CycleDayLog.source column and the OURA
value already present on MeasurementSource.
Marc-André Bombeck