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Next 16.4.0, pg-boss 12.37.1, the AWS SDK 3.1146, @napi-rs/canvas 1.0.10, @node-rs/argon2 2.2.2, @simplewebauthn/server 14.0.3, TanStack Query and Virtual, lucide-react, mmdb-lib, nodemailer, otpauth, pg, radix-ui, react-day-picker, react-hook-form, tailwind-merge and yaml. pg-boss moves its schema from 42 to 45 (three additive migrations, nullable columns and one partial index, no table rewrite); the worker applies them on start as before. The retention test pins the installed version, so it moves to 12.37.1 after re-checking every source line it asserts. zod stays on 4.4.3. 4.5 requires seconds in `z.iso.datetime()` and 4.6 rewrites nullable unions in the generated JSON Schema into `type` arrays, which reshapes the OpenAPI document and the MCP tool schemas. Dependabot skips zod 4.5 and later until that move is made on purpose.
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.