The SSO callback bound a verified provider email to the local account with the same address on the spot. The local address is not verified: anyone could register with it, or type it into their profile, and the SSO user then landed in an account the other person still held the password to. The callback now links nothing. It records the link it would make in a sealed, ten-minute, HttpOnly cookie and sends the browser to the sign-in page, and the link is made only when that browser then signs in to that same account with its password (and second factor) or passkey. Under an SSO-only policy the password form opens for exactly that account. The native sign-in answers oidc_link_required; the link is confirmed once on the web. Moving an account to a new email address now also needs a fresh proof: a sign-in or second factor in the last five minutes, or the current password sent alongside the change. Without it the address is left as it was and reported in rejectedFields; the rest of the save still lands.
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__/.