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Marc-André BombeckandClaude Opus 4.8
77a652a47c
Add the menstrual-cycle phase as a channel in the existing FDR-guarded correlation machinery, the same way rated mood factors were folded in — no new statistics, the same Welch + Benjamini-Hochberg pipeline, the same day floors and q = 0.10 gate. Two complementary mechanisms, both confined to a gender-gated surface: - a categorical luteal-vs-follicular contrast per outcome metric (resting heart rate, HRV, sleep, steps, weight, basal/wrist/skin temperature), surfacing one headline finding (resting-heart-rate-by-phase, falling back to HRV); and - the continuous phase ordinal folded into the lagged-Pearson matrix. Phase never reaches the general correlations route — the temperature channels held out of the general matrix are un-blocked only here, behind the cycle gate, so a reproductive inference can never leak onto a non-gated surface. Every row shows n, effect size, p and q; nothing is fabricated on thin data and nothing is framed as causal. Surface it through a new gated GET /api/cycle/insights and a drop-in card that mirrors the mood-factor crosstab. Add a cycle dimension to the Coach snapshot: current phase + day-of-cycle, the next predicted event (period range + confidence + method, fertile window goal-gated), and the headline phase finding — present only for a cycle-enabled account, so a non-cycle snapshot is unchanged. A new ground rule keeps the Coach descriptive: never contraception-grade, never a "safe day" claim. OpenAPI regenerated; phase-correlation + snapshot-inclusion tests added; copy localised across all six locales. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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.ts; outbound HTTP goes through src/lib/safe-fetch.ts.