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Marc-André Bombeck
c86c7d1a79
Add the in-repo rule `healthlog/import-boundaries`: - a file under src/lib may not import src/components or src/app (alias, relative, re-export and dynamic forms, type-only included); - a "use client" file may not make a value import of the database client, the crypto module, the Prisma client entry, the job queue, pg, pg-boss or next/headers. Type-only imports and the Prisma enums entry stay legal. The four lib files that still import upward are listed in the rule's allow map with a reason each; a listed file that stops importing upward is reported, so the map can only shrink. Five of the nine upward imports are gone by moving pure modules to their layer, without behaviour change: - supply-runway estimate → src/lib/medications/supply-runway.ts (read by the low-stock job and the medication list read); - weekday BYDAY tokens → src/lib/medications/scheduling/weekday-tokens.ts (read by the medication extraction prompt); - settings section slugs → src/lib/settings/section-slugs.ts (read by the record-settings classification); - the command palette index → src/components/command-palette/ (it is a client index built from component registries). Proof the rule can fail: an import of @/components/ui/card appended to src/lib/medications/supply-runway.ts reported libUpward, and a planted "use client" file importing @/lib/db reported clientServerOnly; both were removed again.
src/
Application source. HealthLog is a Next.js 16 App Router project (output: "standalone", React 19, TypeScript strict). The path alias @/* resolves to this directory. Everything a request touches lives under here; the layout below follows the request flow rather than alphabetical order.
Request flow
client → src/proxy.ts → src/app/<route>/route.ts → src/lib/api-handler.ts → handler body → src/lib/api-response.ts → client
proxy.ts— the HTTP edge (Next.js 16's renamedmiddleware). Public-path allowlist, demo-mode mutation block, server-side onboarding redirect, worker-only refusal,x-request-id+ CSP nonce generation, every security header.app/— App Router pages (RSC by default) and API routes. Every API route wraps its handler inapiHandler. Seeapp/README.md.lib/— the server/runtime toolkit:apiHandler, auth, crypto, rollups, AI, notifications, pg-boss jobs, integrations, rate limiting. Seelib/README.md.components/— React components (shadcn/ui new-york, kebab-case files). Seecomponents/README.md.
Other directories
hooks/— shared React hooks (use-prefix, kebab-case).types/— shared TypeScript declarations.generated/prisma/— the generated Prisma client (do not edit; regenerated byprisma generate). Imported as@/generated/prisma.instrumentation.ts— Next.js startup hook; boots the pg-boss worker registry and boot-time backfill queues.__tests__/— cross-cutting unit tests; most tests live in__tests__/folders next to the code they cover.
Conventions
See ../CLAUDE.md for the full set. The load-bearing ones: RSC by default ("use client" only when a hook/state/browser API needs it); every API route wraps apiHandler and parses its body with Zod safeParse; userId is always narrowed from session or Bearer, never accepted as a body field; TanStack Query keys come only from src/lib/query-keys/; outbound HTTP goes through src/lib/safe-fetch.ts.