mirror of
https://github.com/MBombeck/HealthLog.git
synced 2026-11-08 12:32:43 +00:00
Marc-André Bombeck
0be484c8a3
Add a short-horizon OLS projection over the DAY-native per-day mean series, extending the existing trendSlope. The fit, residual standard error and prediction interval are computed at DAY granularity only — the rollup invariant forbids composing a slope/sd from WEEK/MONTH buckets. The projection is gated on fit quality (R squared), in-window history and staleness: below any floor the engine returns insufficient rather than a weak line, so noise is never extrapolated. The prediction-interval band widens with the horizon distance from the data centre, so the fan visibly communicates uncertainty. Register TRAJECTORY in the derived registry and dispatch (additive, iOS-forward-compatible; the capabilities endpoint and drift-guard pick it up automatically). Surface it on the weight detail page as a forecast band beneath the chart, labelled a projection with the cited method and a conditional, range-only headline — never a prediction or a dated event. i18n across all six locales.