Four honesty fixes with no behaviour change to the math.
The validation header claimed more than it proves. The ridge FIT is
out-of-sample and no training fold sees ahead — that holds. But feature
SELECTION and per-user standardisation both run over the whole window
before the split, a small documented optimism (measured at about one
part in sixty on the error). The header now says exactly what is and is
not leak-free, and says to nest the screening if the feature set ever
grows or the optimism is ever measured larger.
The per-weekday observation floor had no consumer: no weekday board is
built on this fit, the forecast only publishes seasonalUnlocked and
leaves the weekday view to the insights page, which has its own floors.
Removed rather than left as a number nothing reads, with a note to bring
it back alongside such a board.
Two comments were wrong and are now true: the route's parameter is
declared for the exported type, not to steer a method check the wrapper
resolves from the Next.js request with a GET fallback; and the label
surface imports the key parser from feature-keys.ts, not features.ts.
And the write-surface guard now states its own structural blind spot,
the way the session-surface guard does: the wipe path deletes this table
through a dynamically-resolved delegate the literal matcher cannot see,
which is why that deletion is correctly not counted as a writer.
The Coach staleness fixture moves above the forecast floor, because the
read path now refuses below it: a one-entry account correctly gets an
absence rather than the present forecast that case exercises.
The snapshot gains the day's two readings with the age of the second
one, through the same reader the page uses, so the page and the
assistant cannot disagree about what today's comparison is. The
freshness rule is the shared one: a comparison about the day before
yesterday carries the date it is about and an instruction not to state
it as today. Absence is a present field rather than a missing key —
a model told "there is none yet" says so, and a model told nothing
estimates one. The wording rule travels with the values, because a model
handed a number and no instruction writes the sentence its training
suggests, and about a forecast that sentence is a causal one.
The contract publishes the resolved value: the expected figure, the
band, the count, the deviation against the band, the age, and the
contributions that carried weight. Nothing is left for a client to
re-derive — two clients deriving the same figure about somebody's health
record is how they start disagreeing about it. The description carries
the observational wording and the display rule: the count goes wherever
the value goes.
The end-to-end proof runs against real Postgres and reads the table
rather than a return value: nothing written a day short of the
threshold, a banded and counted row on the day it crosses, the
provisional label dropped at sixty days, the rows cleared when the
module goes off, the rows cleared when entries are deleted back below
the threshold, and an older pass's row replaced rather than left beside
a fresh one. A delegate holding only the mind section is refused, and
the assertion is on the response bytes.
The snapshot stamps every metric block with an asOf built from the
newest reading in it, which for mood is the newest ENTRY on the 1-5
axis. Somebody who taps a face each morning and opens the sliders once
a week therefore carries a block stamped as current and a stress
reading six days old, and a reader taking the block stamp as covering
the dimensions states last week's answer as today's.
The block now names the precedence in one line beside the dimensions,
and each dimension keeps its own age. Present only when there are
dimensions to explain.
The staleness test rebuilds the block shape from the pure calculator, so
it proves the calculator and the freshness rule agree and nothing else:
hardcoding the freshness flag in the feature builder, deleting the
notice that goes with a stale value, or dropping the whole block left it
green. This calls extractFeatures against real rows instead.
Both failures were watched. With the flag hardcoded true the unit test
still reported four passing while this one named the six-day-old stress;
with the notice removed it named the missing instruction.
Marc-André Bombeck