// fc-driftwatch.jsx, the early-warning lifecycle tier (§9.5). The confirmed
// 7-day verdict (behind/unsafe) + the Change-Plan flow already exist; this is the
// SOFT layer that fires first: a CUSUM of daily deviation vs the cycle-adjusted
// plan catches a consistent creep in ~2–3 days, well before a 7-day rate could.
// It is deliberately quiet and NON-RED — a heads-up, never a re-plan.
// DriftWatchCard · the nudge itself (behind / fast / clear), data-driven
// DriftWatchToday · the card in context on the dashboard, so its calm register
// vs. the confirmed verdict is legible
// Reads window.driftWatch(paceKey); demo-overridable for the late-tightening state.
const { Phone: DPhone, StatusBar: DStatusBar, HomeIndicator: DHome, LargeTitle: DLargeTitle,
TabBar: DTabBar, GearButton: DGear, DashBanner: DDashBanner, Eyebrow: DEyebrow,
Card: DCard, CoachTip: DCoachTip } = window;
// CUSUM accumulation meter — shows how far the drift has built toward the
// decision limit `h`. Amber fill, hollow track, a tick + label at the limit.
function CusumMeter({ pct = 0.7, tripped = false, label = 'heads-up at' }) {
const tone = tripped ? 'var(--t-amber)' : 'var(--ink-3)';
return (
{/* decision-limit tick */}
drift building{label}
);
}
// Pull the live drift read, allow explicit overrides for the demo states.
function driftRead(paceKey, over) {
let d = {};
try { d = (window.driftWatch ? window.driftWatch(paceKey) : {}) || {}; } catch (e) { d = {}; }
return { status: 'behind', days: 3, pct: 1, tightened: false, ...d, ...(over || {}) };
}
const COPY = {
behind: {
chip: 'Drift watch',
headline: 'You’ve crept above plan three mornings running.',
body: 'Not one heavy day — a steady drift. Catching it now means a small nudge instead of a hard correction later. Tighten your food a touch and we’ll keep watching.',
meterLabel: 'heads-up at',
},
fast: {
chip: 'Drift watch',
headline: 'You’re sliding under plan a little fast.',
body: 'Three mornings trending below the line. Nothing alarming, but losing quicker than planned eats into fight-night power. Add a bit back and hold the line.',
meterLabel: 'heads-up at',
},
clear: {
chip: 'Drift watch',
headline: 'Holding the line — no drift.',
body: 'Your last fortnight tracks the plan within normal day-to-day water noise. Nothing to do. We surface this only when a consistent creep starts.',
meterLabel: 'limit',
},
};
// The nudge. Quiet amber when active, neutral when clear. Always carries the
// "early read · not a verdict" line so it never reads as the confirmed call.
function DriftWatchCard({ paceKey = 'trailing', variant, override, late = false }) {
const dir = variant || (paceKey === 'tooFast' ? 'fast' : paceKey === 'onTrack' ? 'clear' : 'behind');
const d = driftRead(paceKey, override);
const active = dir !== 'clear';
const c = COPY[dir];
const tone = active ? 'var(--t-amber)' : 'var(--t-green)';
const soft = active ? 'var(--t-amber-soft)' : 'var(--t-green-soft)';
const days = override?.days ?? d.days ?? 3;
const pct = override?.pct ?? (active ? Math.min(1, d.pct || 1) : 0.4);
return (
{/* radar/eye glyph — watching, not warning */}
{c.chip}
{active && {days}-day creep}
{c.headline}
{c.body}
{active && }
{late && active && (
Inside two weeks out, we watch tighter. This tripped on a smaller drift than it would early in camp — lost days cost more the closer you are to weigh-in.
)}
{/* the line that keeps it a heads-up, not the verdict */}
Early read — not a verdict. Your weekly pace check still has the final say.
);
}
// In-context: the drift-watch card sitting on Today, so its calm register reads
// against the hero number. This is the moment BEFORE the 7-day verdict confirms.
function DriftWatchToday({ styleKey = 'balanced', variant = 'behind' }) {
const paceKey = variant === 'fast' ? 'tooFast' : 'trailing';
return (
} />
{variant === 'fast' ? '75.1' : '76.4'}KG
Trend · {variant === 'fast' ? '0.3 kg under plan' : '0.3 kg over plan'}
{/* the still-quiet pace row underneath — verdict has NOT flipped yet */}