Add a recovery-score engine that turns a user's already-stored nightly
signals into a stored 0-100 score. It reuses the readiness blend — the
resting-heart-rate, HRV (SDNN), sleep and respiratory-rate deviation
from the personal baseline, with the null-redistribution the health
score already uses — so the stored series and the live readiness surface
can never drift. The lineage is the recovery-marker literature (Plews
2013, Buchheit 2014): a higher score reads as more recovered. It is a
descriptive wellness proxy, not a clinical or training-recovery
assessment, and it is only stored when enough components are present —
below that floor no row is written rather than a headline from one
signal.
A nightly job computes each eligible user's score and upserts it as a
COMPUTED RECOVERY_SCORE row, idempotent per user per day on the
externalId day key, so a re-fired tick overwrites in place instead of
duplicating. The score is never computed on a page visit. The queue is
registered in the worker's queue inventory, scheduled, and wired to a
handler; a grep guard pins all four points so it cannot silently never
run.
Marc-André Bombeck
3dcec54726