GET /api/meta/capabilities dropped group membership at the wire: it shipped a flat group-id list and a flat leaf list with no boundary between them, so a native client could not tell which leaves live under which group, or which group is the fenced sensitive tier. That made it unsafe for the client to offer a "select all" affordance for any group, since it could not mirror the server's fence against bundling more than one sensitive leaf behind a single control. Add SHARE_GROUPS to the report-selection catalogue, derived from the existing REPORT_GROUPS/MEASUREMENT_LEAF_GROUP/STRUCTURED_LEAF_GROUP maps: each group now carries its member leaf ids, and the group whose id equals SENSITIVE_GROUP_ID carries sensitive: true. share.groups in the capabilities response now ships this shape instead of bare ids; share.leaves is unchanged. Update the OpenAPI schema and regenerate docs/api/openapi.yaml. Add an invariant test asserting every leaf in the flat leaves set appears in exactly one group and no group carries a leaf outside that set, plus a check that exactly one group is flagged sensitive.
src/app/
The Next.js App Router tree: the page surfaces a logged-in user sees and the REST API under api/. Server components are the default; "use client" is added only where a hook, state, or browser API needs it. Routing is file-based — a page.tsx is a page, a route.ts is an API endpoint.
API routes (api/)
Every endpoint wraps its handler in apiHandler (@/lib/api-handler), parses any body with Zod safeParse, narrows userId from the session or Bearer token (never from the body), and returns the { data, error, meta? } envelope. requireAdmin() is cookie-only, so api/admin/ is unreachable by Bearer token. Notable groups:
auth/— login, register, password, passkey (WebAuthn), refresh, Codex device-OAuth.measurements/,mood-entries/,medications/,sleep/— the core health-data CRUD + batch/bulk ingest.ingest/— external Bearer-token ingest surfaces.insights/,analytics/,dashboard/— AI insights, the Coach SSE stream, trend summaries, the first-paint dashboard snapshot.withings/,whoop/,fitbit/,integrations/,sync/— OAuth connect/sync/webhook surfaces and the offline delta feed.fhir/,share-links/,doctor-report/,export/,import/— clinician-facing FHIR R4 read API, shareable records, report + data export.notifications/,devices/,send/,telegram/— channel registration, device tokens, dispatch, webhook intake.admin/— operator panel APIs (cookie-only).health/,version/,meta/,internal/— health check, build-version probe, runtime metadata, worker-internal routes.
Page surfaces
measurements/, medications/, mood/, insights/, achievements/, notifications/, settings/, onboarding/, admin/, plus the public about/, privacy/, bugreport/, the share-record route c/, and the root dashboard (page.tsx). Shared shell + chrome lives in layout.tsx; error.tsx / global-error.tsx / not-found.tsx / loading.tsx cover the framework boundaries. layout.tsx holds the one nonce-bound dangerouslySetInnerHTML (theme bootstrap).
Conventions
See ../../CLAUDE.md. The request-flow walk in .planning/codebase/arch.md annotates each layer with file:line citations. Related dirs: handlers compose ../lib/; pages render ../components/.