Supplement-style intake written to Apple Health by nutrition apps — vitamins, minerals, water, caffeine — can now sync as daily totals into a dedicated NutrientIntakeDay store (migration 0241): composite (user, day, nutrient) identity, re-post replaces, no soft delete, no rollup coupling. A code-side catalog carries the 26 nutrient codes with canonical units, plausibility caps, and EFSA dietary reference values (direction-aware; chromium cites NIH ODS where EFSA declined a DRV). Deliberately not a nutrition feature: no diary, no calories, no dashboard surface. POST /api/nutrients/batch is gated behind the new opt-in nutrients module (default off — with the module off the server refuses ingest entirely), rate-limited, idempotency-wrapped, with per-entry unit-mismatch and out-of-range skips. GET /api/nutrients serves a catalog-ordered summary; the only visible surface is a read-only card under Settings → Sources. Coach/correlation access is a later slice; the iOS reading side is coordinated in the companion-app tracker.
src/components/
React components. The UI primitives are shadcn/ui (new-york style, zinc base) over Radix + Tailwind 4 + Lucide; everything above the primitives is feature-grouped by surface. Components are server components unless they need a hook, state, or browser API, in which case they open with "use client". Charts use Recharts 3 — replacing the chart library requires explicit approval.
Primitives and shell
ui/— shadcn/ui primitives (button, dialog, sheet, table, …). Generated by the shadcn CLI; keep edits minimal and on-style.layout/— the app shell: sidebar, topbar, bottom nav.providers.tsx,version-poller.tsx— top-level context providers and the self-healing stale-shell poller.i18n/— translation context + locale switcher.
Feature groups
insights/— insight status, assessment cards, Coach surface, advisor cards (the largest group).medications/— medication cards, the schedule wizard, intake timeline, detail history.settings/— the section components behind each settings page.measurements/,mood/,dashboard/— entry forms, lists, dashboard tiles.charts/— Recharts wrappers.monitoring/— Umami / GlitchTip client bootstrap.gamification/,targets/,comparison/,doctor-report/,clinician/,onboarding/,admin/— the remaining per-surface groups.
Conventions
Kebab-case filenames; React component exports stay PascalCase regardless. (A handful of PascalCase-filename outliers under medications/ + onboarding/ are pre-existing drift, noted in ../../CLAUDE.md.) Every t() call needs a matching key in messages/en.json — guarded by i18n-call-site-coverage.test.ts. Data reads go through TanStack Query with keys from @/lib/query-keys and unwrap (await res.json()).data. Tests live in __tests__/.