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Marc-André BombeckandClaude Opus 4.7
4e2386e2d1
The dashboard tiles labelled the 7-day average as "7T:" / "7d:" with
the mean value beside it. Marc found that label unclear when the
goal of the tile is to convey *direction* over the past week, not a
mid-point average:
Before: 7T: 80,5 30T: 79,8
After: 7T-Trend: 80,5 (+1.2) 30T: 79,8
The avg7 line now flips its label to `charts.trend7dShort` ("7d trend"
/ "7T-Trend") when a `trend7Delta` prop is supplied, and renders a
signed delta indicator next to the average. Color of the delta
follows the same `directionSentiment` rules the headline arrow
already uses:
- up-bad metrics (BP, weight, body fat): +delta paints orange,
-delta paints green.
- up-good metrics (mood, sleep, steps): +delta paints green,
-delta paints orange.
- neutral metrics (pulse): both signs stay muted.
Tiny absolute deltas (< 0.05) read as "no movement" and stay muted
regardless of sentiment, so a flat metric never paints a colour.
Delta source is the existing 7-day linear-regression slope from
`DataSummary.slope7` (already computed by `summarize()` in
`lib/analytics/trends.ts`). Projection: `slope.slope * 7 days =
end-to-end delta of the regression line` — extracted into the pure
helper `summaryToTrend7Delta()` in `lib/analytics/trend-delta.ts` so
the rule stays unit-testable.
Wired to weight, BP-sys, BP-dia, pulse, body fat, mood, sleep, steps.
Glucose tiles keep the legacy avg label until v1.5 (per-context
slopes need a wider summary contract).
Tests:
- Unit `summaryToTrend7Delta()`: null when summary missing /
slope7 null, projects rate × 7 for positive and negative slopes,
zero for stable slope.
- Component `<TrendCard>`: trend label ("7d trend" / "7T-Trend")
shows in EN + DE, legacy label preserved when no delta supplied
(back-compat), delta renders with `+`/`−` sign and one decimal,
±0 for near-zero, +delta on up-bad → orange, +delta on up-good →
green, neutral metric → muted regardless of sign.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>