Review follow-up to the shared entry-instant guard. The past-floor refine
re-ran the full plausibility predicate, so a future-dated instant tripped
both refines and the 422 carried a nonsensical "too far in the past" message
alongside the correct future one. The floor refine now checks the past bound
alone; a future value emits only the future message, matching the pre-refactor
single-message contract.
Also harden the Health-Score BP inputs and de-duplicate the tile-window
derivation surfaced in the same review:
- the prior-week graded score now keys off the prior-week window's own
sufficiency rather than the current window's, so the week-over-week graded
delta never pairs a confident current value against a thin-sample prior one;
- the BD-Zielbereich 90-day count + effective span derive through one shared
`deriveBpWindow90` helper, so the dashboard snapshot and the analytics thick
slice can never compute the gate or the label span differently.
The BD-Zielbereich tile narrated a static "· 90 T" scope even for a user
with only a few weeks of history or a handful of readings — a headline that
reads like a stable quarter-long average when it is really a thin sample.
Add a shared, reusable window-confidence helper that, given a window length
and the readings observed inside it, returns the EFFECTIVE label span (the
real calendar span capped at the window, so "· 23 T" until ~90 days of
history exist) and a sufficiency flag (false below five readings). The helper
is metric-agnostic so the glucose time-in-range / GMI and sleep tiles can
reuse it.
Wire it into the in-target headline: below the confidence floor the tile
shows "sammelt noch Daten" instead of a hard percentage, with the dynamic
span label; above it the percentage shows with the real span. The
Health-Score BP pillar reads the same sufficiency notion through the shared
input builder, so a thin-data user no longer gets a confident pillar grading
off a few readings — the all-time rate still rescues a deep-history account
with a quiet quarter. The 90-day pair count and effective span thread from
the analytics route and the dashboard snapshot through to the tile.
Marc-André Bombeck