Token verification: jwtVerify now carries a closed asymmetric algorithm allowlist (RS256/PS256/ES256/EdDSA — an HMAC alg would let anyone with the client secret forge identities) and a 60 s clock tolerance for the usual self-host drift between IdP and app box. The JWKS fetch — jose's own, outside safeFetch by design — is disciplined instead by pinning the jwks_uri host to the configured issuer's host byte-exact and passing the same 15 s timeout safeFetch defaults to. requirePublicHost stays deliberately unused on this surface: LAN/Tailscale-only IdPs are a legitimate topology and the issuer is operator config, not user input. Discovery: the issuer comparison now tolerates exactly one trailing slash on either side (a recurring IdP/operator mismatch); token verification still matches the provider-sent issuer byte-exact. State cookie: the cookie is set under Path=/api/auth/oidc but was deleted without a path — RFC 6265 keys cookies by (name, domain, path), so the deletion never matched and the single-use blob survived its whole TTL. Every delete now repeats the exact path, via a shared constant. Also: the IdP error code recorded in the wide event is whitelisted against the closed OAuth error-code set (unknown values collapse to "other"); the status route drops an unreachable try/catch and a duplicated annotate; the passkey conditional-UI autofill stays unarmed under OIDC_ONLY (passkey login is a server-enforced dead end there); env-manifest gains the three optional OIDC_* tuning vars; the env example notes why the issuer should be HTTPS.
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/.