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Marc-André Bombeck
75c43c74bc
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.