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Marc-André BombeckandClaude Opus 4.7 98a57eb786 audit(v1.3.3): SpO2 + body-composition + 14 CRITICAL/HIGH security/correctness fixes (#121) 
* fix(measurements): close issue #109 + sync body composition across UI/PDF/thresholds

User-visible: TOTAL_BODY_WATER, BONE_MASS, and BLOOD_GLUCOSE now appear in
the measurements filter, badge, mobile icon, and edit dialog (issue #109).
Server-rendered doctor report now includes body composition rows (audit
C-9). Body water + bone mass have proper effective-range thresholds so
severity logic doesn't silently return `nominal` (audit C-15).

Structural: extracted the per-type display maps from measurement-list.tsx
into measurement-list-meta.ts as a deliberate first step toward the
single-source manifest planned for phase P5. Coverage tests now fail-fast
if a future enum addition skips any of: list label/icon/color, doctor-PDF
label/unit/vital-types, chart label, threshold metric order/label/bounds.

Audit-2026-05-07 / phase P0:
- closes #109 (filter UI gap, root cause for the German raw-enum display)
- closes audit C-9 (server PDF used a stale type map)
- closes audit C-15 (no warn/critical bands for body composition)

Tests: 282 → 296 (14 new). Typecheck clean.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* docs: align OpenAPI spec + migration comment with body-composition reality

- OpenAPI MeasurementType enum: add TOTAL_BODY_WATER + BONE_MASS (was at
  v1.3.0 baseline; spec drifted past the v1.3 server release)
- Bump openapi version 1.3.0 → 1.3.2 to match package.json
- Migration 0022 comment: TOTAL_BODY_WATER stores kg (water content),
  not percent of body weight. Validators (VALUE_RANGES) and the Withings
  client (type 77 → kg) treat it as kg already; the comment was the lone
  outlier and would mislead the next reviewer.

Audit-2026-05-07 / phase P1a — closes audit M-B1 (partial; OpenAPI enum)
and M-B2 (migration unit comment).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(security): close 3 audit CRITICALs (Withings header / idempotency Bearer / GlitchTip URL strip)

C-3 (Withings webhook secret in URL):
Now reads X-Withings-Webhook-Secret header in preference; URL ?secret=…
fallback retained for legacy Withings configurations and emits a Wide
Event warning so operators can spot still-using-the-old-flow integrators.
The query-string secret was leaking into Coolify access logs and any
GlitchTip event whose request.url got captured.

C-4 (idempotency dead for Bearer-token clients):
The default userIdResolver only consulted getSession(). Bearer-authed
clients (the iOS / n8n / headless-API fleet that PR #117 was built for)
fell through, so every retry created duplicate measurements. The default
now tries cookie session first, then Bearer token via
hashToken+apiToken.findUnique with revoked/expiry checks. All three
existing call sites (measurements, mood-entries, medications/intake) get
the fix automatically.

H-B7 (request.url with secrets shipped to GlitchTip):
reportToGlitchtip now strips the query string before forwarding the URL,
so Withings legacy ?secret=… and any OAuth ?code=… that errors during
the callback don't end up in someone else's incident UI.

Audit-2026-05-07 / phase P2.
Tests: 296 → 301 (5 new in idempotency.test for the Bearer fallback +
revoked/expired/null cases).
Deferred to a follow-up (needs DB migration / lock primitive):
  C-2  moodLog webhook → AES-GCM at rest + HMAC-over-body
  C-5  idempotency TOCTOU advisory_lock or in-flight sentinel row

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* feat(measurements): add OXYGEN_SATURATION (SpO2) as first-class measurement type — v1.3.3

Closes the OxygenSaturation feature request from #109.

- Migration 0024 extends MeasurementType enum (additive, IF NOT EXISTS)
- Zod validators: plausibility 50–100% (below 50 is incompatible with
  sustained life; above 100 is physically impossible)
- effective-range thresholds: green 95–100, orange 92–94, red <92.
  Sources: BTS Guideline 2017 (target 94–98%), ATS clinical practice
  (≥95% at rest is healthy), AHA/clinical literature (<92% = call
  provider, <88% = ER). Lower-only concern — upper orange wing
  collapses to greenMax since saturation cannot exceed 100%.
- Personalisation: existing thresholds-override UI lets COPD /
  chronic-respiratory users with a doctor-set 88–92 baseline tune the
  bands. METRIC_ORDER + METRIC_LABEL_KEYS extended in
  thresholds-section.tsx; the exhaustive `Record<ThresholdMetric>`
  forces TS to catch any missed surface.
- Withings ScanWatch type 54 mapping (best-effort — only fires for
  pulse-ox-capable devices).
- Wired through measurement-form, measurement-list-meta (icon: Wind),
  health-chart, both doctor-report-pdf renderers (core + browser-side
  near-duplicate), OpenAPI spec (version 1.3.0 → 1.3.3), and i18n in
  4 sections × 2 locales.
- iOS DTO already declared `OXYGEN_SATURATION` — server enum addition
  closes the long-standing drift flagged in audit V2.
- 4 new tests: numeric green band, upper-wing collapse,
  user-override (COPD baseline), METRIC_BOUNDS shape.

Tests: 301 → 305. Typecheck: clean.

Audit-2026-05-07 / v1.3.3 / closes #109 SpO2 feature request.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(analytics): truthfulness pass on medical citations + clamp override orangeMax

Doctor-agent + hallucination-hunter audit V3 found six medical citations
in effective-range.ts that the code did not actually implement. Plus a
latent bug in the user-override path that produced physically-impossible
orangeMax values (>100% saturation, <0% body-fat).

Citation rewrites (no numeric changes):

- ACTIVITY_STEPS: "WHO ≥8000 steps/day" → Saint-Maurice JAMA 2020.
  WHO publishes activity in min/week, not steps. Step-count was a
  misattribution that also leaked into AI prompts.
- TOTAL_BODY_WATER: "ESPEN Body Composition Guidance 2017" → Watson
  formula / ICRP Reference Man. ESPEN 2017 is BIA practice guidance,
  it does not publish kg cut-offs.
- BONE_MASS: "DEXA-equivalent bone mineral content" → "Bioimpedance-
  estimated; not DEXA-comparable". Withings BIA values typically run
  5–7% below DEXA — calling them DEXA-equivalent in a doctor-report
  PDF was a real legal-exposure misattribution.
- OXYGEN_SATURATION: "BTS Guideline 2017 (target 94–98%) + ATS
  clinical practice (≥95% at rest is healthy)" → "consumer pulse-
  oximeter consensus (≥95% normal at rest); slightly tighter than
  BTS 2017 (94–98%); NICE NG115 ≤92% escalation, BMJ panel / FDA
  pulse-oximeter labelling ≤88% ER threshold". Code uses 95-100/92-100
  band — that's an ATS/consumer-consensus number, not BTS's literal
  94-98 target. Soften the citation to match the code, not vice versa.

Bug fix (1 latent, 1 real-today):

- effective-range override path now clamps orangeMin/orangeMax to
  METRIC_BOUNDS.{min,max}. Without the clamp, a COPD user setting
  SpO2 override to {95,100} emitted orangeMax = 100.75 (impossible
  saturation), and a BODY_FAT override of {2,80} emitted orangeMin
  = -9.7 (negative percent). Default-range case 210 already
  hard-coded orangeMax: 100 for the same reason — the override path
  was the only branch missing the invariant.

Tests: 305 → 306 (1 new: clamps override orangeMax to physiological 100%).
Typecheck: clean.

Audit-2026-05-07-V3 / closes Doctor + Senior-Dev medical-citation findings.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(security): Bearer-scope wildcard handling + GDPR Art.17 account-delete erasure

Two CRITICAL fixes from audit V3.

NEW-V3-1: Bearer-scope bypass.
  apiToken.permissions ["*"] is meant to be the wildcard "session-equivalent"
  scope (the iOS app receives this on login). The previous check
    permissions.includes(requiredPermission)
  treated "*" as a literal string — never matched. Today many sensitive
  routes call requireAuth() *without* a requiredPermission, so a leaked iOS
  token can act as a full-scope token (account delete, settings wipe). Once
  those routes adopt requireAuth("scope:name"), this wildcard handling keeps
  the iOS app working while narrower-scoped tokens (e.g. user-issued
  ["medication:ingest"]) get correctly 403'd.

  Same wildcard handling added to the standalone permission checks in
  src/app/api/ingest/medication/route.ts:65, 119.

NEW-V3-2: GDPR Art. 17 account-delete erasure completeness.
  Feedback + AuditLog rows had `onDelete: SetNull` in the schema, which
  preserved PII (free-text symptom descriptions, IP addresses, login-city
  geolocation) after the user was deleted. We now explicitly
  prisma.feedback.deleteMany + prisma.auditLog.deleteMany before the
  cascade-delete, making account deletion genuinely complete erasure.

Tests 306/306 still pass; typecheck clean. Audit V3.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* test(pdf): real text-content assertions for body composition + SpO2 rows

Replaces bytes-only "renders body composition rows" theatre test with
pdf-parse-driven text extraction that asserts the actual rendered labels
+ values for TOTAL_BODY_WATER, BONE_MASS, OXYGEN_SATURATION (DE + EN).

Closes V3 audit finding STILL-V2-NEW-3: the previous test only verified
"%PDF-" header + byte-count, so a regression that drops a row would
still pass. Now a missing label fails the test.

- adds dev dep: pdf-parse@^2.4.5
- 308/308 tests pass (was 306, +2 SpO2 + EN-locale coverage)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(measurements): close enum drift cousins — derive 5 type-arrays from canonical enum + extend 2 contract enums

V3 audit finding "enum drift cousins": 7 hardcoded module-level type arrays
silently dropped SpO2/TBW/BoneMass/BloodGlucose from their respective
domains. Adding a new measurement type required hunting these down.

Now all aggregation paths derive from `measurementTypeEnum.options`:
- /api/insights/comprehensive (AI insights)
- /api/dashboard/summary (iOS dashboard adapter)
- /api/analytics (analytics aggregator)
- /lib/insights/general-status (AI general-status fetch)
- /api/import (Zod schema — round-trip now covers all 11 types)

External-contract enums extended additively (no breakage for old clients):
- /api/measurements/series kindEnum: + oxygen, totalBodyWater, boneMass
- /api/dashboard/widgets widgetIdEnum: + oxygenSaturation
- DashboardWidgetId + DEFAULT_DASHBOARD_LAYOUT: + oxygenSaturation row
- formatMeasurementsForExport: glucoseContext now round-trips

Coverage test (`measurement-type-enum-coverage.test.ts`) asserts the
canonical enum stays the source of truth and documents PDF exclusions
(BLOOD_GLUCOSE renders via context section, SLEEP/STEPS lifestyle-only).

313/313 tests pass (was 308, +5 new).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(security): close 6 V3-audit HIGH findings (CSP, web-push SSRF, IP geo, AI provider leak, import rate-limit)

- CSP: chatgpt.com + api.openai.com only on /settings/ai/** routes (was
  blanket connect-src on every page including /auth/login → DOM-XSS exfil
  channel)
- web-push: webPushSubscriptionSchema.endpoint requires HTTPS + isPublicUrl
  refinement; was z.url() only → blind SSRF probe via Push subscription
- isPublicUrl: also fixes a regression where DNS labels starting with
  "fc"/"fd" (fcm.googleapis.com etc.) were falsely classified as IPv6
  unique-local. Check is now gated on a colon being present in the host.
- /api/ai/test: stop returning provider err.message + bodyExcerpt to the
  client (leaked provider URLs / partial keys / internal headers). Now
  returns categorised generic message; full details land in the wide-event
  via annotate() for the operator.
- /lib/geo (auditLog IP geo lookup): switch default provider to
  ipwho.is over HTTPS, accept ipwho.is + ip-api pro response shapes,
  add IP_GEO_LOOKUP_DISABLED env, refuse non-HTTPS configured URLs.
  Previously leaked IP+timestamp over plaintext HTTP every auth event
  (GDPR Art. 32 + Art. 44).
- /api/import: add 5/hour rate-limit (was unlimited; bulk-injection vector)

Tests: 325/325 pass (was 313, +12 new — webPushSubscriptionSchema SSRF
guards, fc/fd-prefix domain regression, geo HTTPS-only, geo provider
shapes, geo opt-out env).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(security,gdpr): trusted-proxy IP, audit-log retention, idempotency cachable filter, Bearer mock tightening

V3 audit follow-on bundle covering 4 HIGH findings.

(I) getClientIp — TRUST_PROXY_HOPS env (default 1) replaces blind XFF
trust. Reads chain right-to-left so client-supplied leftmost entries
cannot rotate the per-IP rate-limit bucket. Default 1 matches typical
single-proxy self-host (Coolify/Caddy/Cloudflare-Tunnel); 0 forces
x-real-ip / null. New 7-test suite covers the rotation attack +
malformed entries + zero-hop fallback.

(F) Audit-log retention job — daily 03:15 cleanup of audit_logs older
than AUDIT_LOG_RETENTION_DAYS (default 365). Closes GDPR Art. 5(1)(e)
"storage limitation" gap; previously IPs + city + login events
accumulated forever. 6-test suite covers default + override +
misconfig guard (rejects <7 days).

(G) isCachableStatus — extracted the inline 4xx/5xx filter into a
named, exported, tested function. 7 cases cover the full do-not-cache
contract (401 / 403 / 408 / 429 / any 5xx) and confirm 2xx + 4xx
validation are still cached.

(H) Bearer-mock tightening — apiToken.findUnique mocks in
require-auth-bearer.test + idempotency.test now assert the
where.tokenHash shape uses the hashed value (not the raw bearer).
A regression that switched back to raw-token comparison would have
been silent without this assertion.

Tests: 345/345 pass (was 332, +13 new).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(security): encrypt moodLog webhook secret at rest with AES-256-GCM (V3 audit STILL-V2-C-2)

The mood_log_webhook_secret column previously stored a plaintext secret
that the webhook handler compared timing-safe against every enabled
user. A DB dump or backup snapshot leaked active webhook credentials.

New contract — no schema migration required:
- Writes go through encryptMoodLogSecret() (AES-256-GCM via existing
  crypto helper, ENCRYPTION_KEY).
- Reads go through readMoodLogSecret() which transparently decrypts
  envelopes and tolerates legacy plaintext rows during the transition
  (graceful upgrade path — no breaking change for self-hosted users).
- Webhook lookup decrypts each candidate before timing-safe compare.
- Status endpoint decrypts for the user's settings page.

One-shot startup migration in reminder-worker rotates any leftover
plaintext rows on next worker boot. Idempotent; encrypted rows are
skipped.

Tests: 350/350 pass (was 345, +5 new — round-trip, legacy passthrough,
isLegacyPlaintext semantics, rotateLegacy idempotence).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* docs: sync README + AGENTS + CLAUDE + CHANGELOG + OpenAPI for v1.3.3 (V3 audit doc-drift)

V3 audit Doku Specialist findings — drift between code and meta-docs.

- README §Key Features now mentions pulse oximetry (SpO₂) + Withings
  ScanWatch sync; Tech Stack model count corrected 23 → 25.
- AGENTS.md status promoted v1.3.2 → v1.3.3; vitest config corrected
  `vitest.config.ts` → `vitest.config.mts`; migration range corrected
  `0001–0022` → `0001–0024`; model count + list updated to 25 (adds
  Device, IdempotencyKey).
- CLAUDE.md model count updated (2 occurrences).
- CHANGELOG.md v1.3.3 expanded with Security + Internal sections that
  were missing the audit-fix-marathon work (Bearer-scope, account-delete
  cascade, moodLog encryption, CSP tightening, Web-Push SSRF, IP-geo
  HTTPS, AI-test leak fix, import rate-limit, trusted-proxy XFF,
  audit-log retention, idempotency cachable filter, Bearer mock
  tightening, enum-drift cousins, PDF text-content tests).
- OpenAPI Bearer description corrected `SHA-256 hashes` →
  `HMAC-SHA-256 hashes (keyed with API_TOKEN_HMAC_KEY)` so the docs
  match the actual server-side implementation. Wildcard scope contract
  documented.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(audit-review): close 4 HIGH + 2 MEDIUM findings from multi-agent review pass

Multi-agent review of the audit-fix branch surfaced four HIGH issues
and a couple of MEDIUM hardenings. All addressed before merge.

HIGH-1 — OpenAPI MetricKind enum drift (iOS strict-decode crash risk).
The dashboard-summary route now emits totalBodyWater/boneMass/
oxygenSaturation MetricCards, but the spec still listed only the
original 7 kinds. Generated iOS Codable would have crashed the dash
the moment a user logged SpO2. MetricKind extended with the 3 new
kinds + comment documenting unknown-value defensive decoding.

HIGH-2 — kindEnum naming consistency on /api/measurements/series.
The series adapter shipped "oxygen" while the dashboard summary used
"oxygenSaturation"; both routes now use "oxygenSaturation" so iOS
decoders can share a single MetricKind type across endpoints.

HIGH-3 — /api/ai/test no-leak guard had no test. Added 4 tests that
mock provider errors with sk-leaked-key + provider URLs in the err
fields and assert the response body never echoes them, plus the
3-status-categorised generic messages (401/429/5xx/other).

HIGH-4 — /api/import 5/hour rate-limit had no test. Added 2 tests that
mock checkRateLimit allowed/disallowed and assert the 429 path uses
the right key shape (`import:<userId>`, 5, 1h) and that the within-
quota path proceeds.

MEDIUM-3 — getClientIp under-length XFF chain regression. With
TRUST_PROXY_HOPS=2 and a chain of length 1, the previous clamp
returned the leftmost (attacker-controlled) entry, silently
re-introducing the rotation attack the helper was meant to close.
Now: when chain is shorter than configured hops, refuse XFF entirely
(fall back to x-real-ip / null). Added regression test.

LOW-1 — TRUST_PROXY_HOPS=garbage now throws at boot instead of
silently degrading to hops=0. Added regression test.

Tests: 358/358 pass (was 350, +8 new). Typecheck clean.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-08 01:05:56 +02:00

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# AGENTS.md
Instructions for AI coding agents (OpenAI Codex, Claude Code, Cursor, etc.) working on this repository.
## Project
**HealthLog** — a personal health-tracking web app (weight, blood pressure, pulse, mood, medication compliance) with Withings integration, moodLog.app sync, Dracula-themed UI, mobile-first PWA design.
**Status**: v1.3.3 — Pulse oximetry (SpO₂) as a first-class measurement type, layered on top of v1.3.2 body composition (TBW + Bone Mass). SSRF-hardened outbound fetches (now also covers Web-Push endpoint + Bearer-scope wildcard handling + IP-geolocation HTTPS-only), GHCR multi-arch images (`linux/amd64` + `linux/arm64`) with SLSA provenance + SBOM, pg-boss graceful SIGTERM drain + audit-log retention purge (GDPR Art. 5(1)(e)), blocking TypeScript CI, locale-integrity test guard. moodLog webhook secret now AES-GCM encrypted at rest. See GitHub Releases + CHANGELOG.md for the full feature timeline (v1.0 → v1.3).
## Tech Stack
| Layer | Technology | Version | Notes |
| --------------- | -------------------- | ------- | ----------------------------------------------------------------------- |
| Framework | Next.js (App Router) | 16 | TypeScript strict, RSC default, `"use client"` only for interactivity |
| ORM | Prisma | 7.8 | Uses `PrismaPg` adapter, **not** `url` in schema — see gotchas below |
| Database | PostgreSQL | 16 | Docker Compose service, port 5432, user `healthlog` |
| UI | shadcn/ui (new-york) | latest | Components in `src/components/ui/` |
| Theme | Dracula | — | CSS variables in `globals.css`, dark mode default, `--dracula-*` tokens |
| CSS | Tailwind | 4 | CSS-first config (`@import "tailwindcss"` syntax) |
| Data fetching | TanStack Query | 5 | Provider in `src/components/providers.tsx` |
| Validation | Zod | v4 | Import as `zod/v4` (not `zod`) |
| Testing | Vitest | latest | Config in `vitest.config.mts` |
| Package manager | pnpm | latest | **Not** npm or yarn |
| Node | 20.x | via nvm | |
| Job queue | pg-boss | 12 | Named import `{ PgBoss }`, see gotchas |
| Auth | SimpleWebAuthn | 13 | Passkeys primary, password fallback |
| i18n | Custom context-based | — | `useTranslations()` hook, `messages/de.json` + `messages/en.json` |
| PDF | jsPDF + autotable | latest | Client-side doctor report generation |
## Commands
```bash
# Development
pnpm dev # Start dev server (http://localhost:3000)
pnpm build # Production build
pnpm lint # ESLint
pnpm format # Prettier format
pnpm format:check # Prettier check
pnpm typecheck # TypeScript strict check
# Tests
pnpm test # Run all tests (vitest)
pnpm test:watch # Watch mode
# Database
pnpm db:generate # Generate Prisma client
pnpm db:migrate # Create & apply migration (dev)
pnpm db:migrate:deploy # Apply migrations (production)
pnpm db:push # Push schema without migration (prototyping)
pnpm db:studio # Prisma Studio GUI
# Docker
docker compose up -d # Start app + postgres
docker compose logs -f app # Tail app logs
# Verification (run before completing tasks)
pnpm typecheck && pnpm lint && pnpm test && pnpm format:check && pnpm build
```
## File Layout
```
src/
├── app/ # Pages and API routes (App Router)
│ ├── layout.tsx # Root layout (viewport-fit: cover for PWA)
│ ├── page.tsx # Dashboard (/) with quick entry dropdown
│ ├── globals.css # Dracula theme CSS variables
│ ├── admin/page.tsx # Admin panel
│ ├── auth/login/page.tsx # Login
│ ├── auth/register/page.tsx # Registration
│ ├── achievements/page.tsx # Gamification achievements
│ ├── bugreport/page.tsx # Bug report → GitHub issue
│ ├── insights/page.tsx # Health insights + correlations + AI (7 sections with sticky nav)
│ ├── measurements/page.tsx # Measurements CRUD table
│ ├── medications/page.tsx # Medications management
│ ├── notifications/page.tsx # Notification preferences matrix
│ ├── onboarding/page.tsx # 4-step guided onboarding
│ ├── settings/page.tsx # All settings (8 top-level sections, ~3150 lines — split tracked for 1.4.0)
│ ├── mood/page.tsx # Mood tracking
│ ├── targets/page.tsx # Target values dashboard
│ └── api/ # 100+ API route files (admin, auth, measurements, medications, mood, insights, integrations, ingest, dashboard, feedback, tokens, notifications, monitoring, …)
│ ├── mood-entries/ # Mood CRUD
│ ├── import/ # JSON data import
│ ├── doctor-report/ # Doctor report data aggregation
│ ├── gamification/ # Achievements (persistent)
│ ├── integrations/moodlog/ # moodLog.app webhook + sync + status
│ └── ...
├── components/
│ ├── ui/ # shadcn/ui primitives
│ ├── layout/ # Shell: sidebar-nav, topbar, mobile-nav, bottom-nav
│ ├── medications/ # Medication form, card, timeline
│ ├── measurements/ # Measurement form, list
│ ├── mood/ # Mood form, mood list
│ ├── charts/ # Recharts wrappers, compliance charts
│ ├── insights/ # AI insights cards (status, advisor)
│ ├── gamification/ # Achievement cards, progress
│ ├── settings/ # Settings-page section components
│ └── monitoring/ # Umami, GlitchTip bootstrap
├── lib/
│ ├── db.ts # Prisma client singleton
│ ├── crypto.ts # AES-256-GCM encryption
│ ├── gravatar.ts # Gravatar URL from email (SHA-256)
│ ├── api-response.ts # { data, error, meta } envelope helpers
│ ├── rate-limit.ts # In-memory sliding window rate limiter
│ ├── export.ts # CSV/JSON export formatting (incl. mood)
│ ├── doctor-report-pdf.ts # Client-side PDF generation (jsPDF)
│ ├── auth/session.ts # getSession() → { session, user } | null
│ ├── analytics/ # Trend calculations, compliance, correlations
│ ├── i18n/ # I18n context + config
│ ├── notifications/ # Dispatcher, types, senders (telegram, ntfy, web-push)
│ ├── jobs/ # pg-boss worker (reminders, insights, backups)
│ ├── validations/ # Zod schemas (shared between API + client)
│ ├── ai/ # Multi-provider client (OpenAI, Anthropic, local OpenAI-compat)
│ ├── feedback/ # In-app feedback + optional GitHub escalation
│ ├── gamification/ # Achievement definitions + progress
│ ├── insights/ # Insight pipeline + prompts
│ ├── logging/ # Wide Events: builder, context, sampler, transports, background
│ ├── moodlog/ # moodLog.app webhook + sync
│ ├── monitoring/ # Umami / GlitchTip server-side hooks
│ └── withings/ # Withings OAuth client + sync service
├── hooks/
│ └── use-auth.ts # useAuth(), useLogout() hooks
├── generated/prisma/client/ # Generated Prisma client (DO NOT EDIT)
messages/
├── de.json # German translations (primary UI language)
└── en.json # English translations
prisma/
├── schema.prisma # Database schema (25 models)
└── migrations/ # Migration files (0001–0024; latest: oxygen_saturation)
prisma.config.ts # Prisma config (DB URL lives here, NOT in schema)
public/
├── sw.js # Service worker (Web Push + offline caching)
├── manifest.json # PWA manifest
└── ... # Static assets
docs.healthlog.dev # External documentation site
```
## Key Conventions
- **Default locale is English**. All code-level strings in English. UI text via i18n (`t()` calls) with German + English translations.
- **i18n**: Use `useTranslations()` hook → `t("section.key")`. Supports parameter interpolation: `t("key", { count: 5 })`. Messages in `messages/de.json` + `messages/en.json`.
- **API response format**: Always `{ data, error, meta }` via `apiSuccess(data)` / `apiError(message, status)` from `src/lib/api-response.ts`.
- **Auth check pattern**: `const session = await getSession(); if (!session) return apiError("Not authenticated", 401);`
- **Timezone**: `Europe/Berlin` for display, UTC in database.
- **Encryption**: Sensitive data (Withings tokens, API keys, VAPID private keys) encrypted with AES-256-GCM via `src/lib/crypto.ts`.
- **Dracula colors**: Use CSS variables `var(--dracula-purple)`, `var(--dracula-cyan)`, `var(--dracula-green)`, `var(--dracula-orange)`, `var(--dracula-pink)`, `var(--dracula-red)`, `var(--dracula-yellow)`, `var(--dracula-fg)`, `var(--dracula-comment)` for chart/graph elements.
- **Proxy route protection**: `src/proxy.ts` checks `healthlog_session` cookie on all non-public paths. Unauthenticated page requests → redirect `/auth/login`. API routes keep their own `getSession()` auth. Public paths defined in `PUBLIC_PATHS` array.
- **PWA safe area**: Root layout uses `viewportFit: "cover"`. Bottom-nav has `pb-[env(safe-area-inset-bottom)]`. Auth-shell uses `pb-[calc(5rem+env(safe-area-inset-bottom,0px))]`.
- **PDF generation**: Client-side via `src/lib/doctor-report-pdf.ts` using jsPDF. Data fetched from `POST /api/doctor-report`. European medical format with German terminology.
- **Data backup**: pg-boss weekly job (`data-backup` queue, Sundays 03:00), stores compressed JSON in `DataBackup` model.
- **Achievements**: Persistent in `UserAchievement` table. API at `/api/gamification/achievements` computes current state, compares with DB, persists new unlocks. `unlockedAt` timestamp is stable once set.
## Critical Gotchas
These are hard-won lessons. Ignoring them will cause errors:
### Prisma 7
- **No `url` in schema.prisma** — The database URL is configured in `prisma.config.ts`, not in the `datasource` block.
- **Import path**: `import { ... } from "@/generated/prisma/client"` (with `/client` suffix, not `@/generated/prisma`).
- **Adapter required**: PrismaClient needs `PrismaPg` adapter from `@prisma/adapter-pg`. See `src/lib/db.ts`.
- **No `earlyAccess`** in defineConfig — causes TypeScript errors.
### Next.js 16
- **Proxy, not middleware**: Next.js 16 renamed middleware to proxy. The file is `src/proxy.ts` (not `middleware.ts`). Having both causes a build error: "Both middleware file and proxy file detected".
### Libraries
- **SimpleWebAuthn v13**: No `@simplewebauthn/server/script/deps` — define Transport type inline.
- **zxcvbn-typescript**: Default export only. `zxcvbnAsync` and `zxcvbnOptions` do not exist as named exports.
- **pg-boss v12**: `{ PgBoss }` named import (not default), use `localConcurrency` (not `teamSize`), handler receives `Job<T>[]` array.
- **Zod v4**: Import from `"zod/v4"`, not `"zod"`.
- **jsPDF**: Client-side only. Import dynamically in browser context. Used with `jspdf-autotable` plugin.
### Settings Page
- One large file (~3150 lines), 8 top-level sections. Sidebar switches to "settings mode" showing section shortcuts. Splitting into per-section files is tracked for 1.4.0 — until then, ESLint `react-hooks/set-state-in-effect` stays non-blocking because of the long-standing violations in this file.
- Sections scroll-to with highlight animation (`section-highlight` CSS class).
- Top-level section IDs: `section-allgemein`, `section-sicherheit`, `section-benachrichtigungen`, `section-personalization`, `section-integration`, `section-api`, `section-export`, `section-danger-zone`. Sub-anchors inside those sections include `profil`, `passwort`, `passkeys`, `telegram`, `ntfy`, `web-push`, `insights`, `dashboard-layout`, `thresholds`, `withings`, `moodlog`, `api-tokens`, `api-endpoints`.
### Insights Page
- Large file (~1750 lines), 7 content sections with AI summaries.
- Sticky horizontal chip navigation (`InsightsSectionNav` component) with IntersectionObserver for active state tracking.
- Section IDs: `general`, `bp`, `weight`, `pulse`, `mood`, `meds`, `bmi`.
- Each section has `scroll-mt-28` for header offset on scroll.
### Sidebar
- Collapsible (icons-only mode, `w-16`). State persisted in localStorage (`healthlog-sidebar-collapsed`).
- User section at bottom: Avatar (Gravatar if email, initials fallback) + username + three-dot MoreVertical menu (right side).
- Three-dot menu: Admin link, Notifications, Theme picker, Logout.
- ESLint enforces `react-hooks/set-state-in-effect` — use lazy `useState(() => ...)` for localStorage reads, NOT `useEffect` + `setState`.
### Gravatar
- `src/lib/gravatar.ts` generates Gravatar URL server-side (SHA-256 hash of email, `?d=404` fallback).
- Returned in `/api/auth/me` response as `gravatarUrl` field. Used by `AvatarImage` component with `AvatarFallback` for initials.
### Notification System
- **Channels**: `telegram`, `ntfy`, `web_push` — stored as plain `String` on `NotificationChannel.type` (no Prisma enum; the canonical list lives in `src/lib/notifications/types.ts`).
- **Event types**: `medication_reminder`, `measurement_anomaly`, `compliance_low`, `withings_sync_failed`, `system_alert` — also `String` on `NotificationPreference.eventType`. Source of truth is the discriminated union in `src/lib/notifications/types.ts`.
- **Opt-out model**: Preferences default to ON (enabled) when no `NotificationPreference` row exists.
- **Dispatcher**: `src/lib/notifications/dispatcher.ts` checks channel enabled + preference per event type.
- **Telegram**: Inline buttons (Take/Skip/Snooze 1h/Snooze 3h), pre-end window reminders (30 min before), message auto-cleanup after 24h.
### Onboarding
- 4-step guided flow: Profile → Medications → Notifications teaser → Target values.
- Optional steps 2-4 have "Skip" buttons.
- Progress indicator bar at top.
- Located at `/onboarding`, linked from proxy as public path.
## Database Models (Prisma)
25 models: `User`, `Passkey`, `Session`, `AuthChallenge`, `Measurement`, `Medication`, `MedicationSchedule`, `MedicationIntakeEvent`, `ReminderPhaseConfig`, `TelegramReminderMessage`, `TelegramScheduledDeletion`, `ApiToken`, `WithingsConnection`, `MoodEntry`, `AppSettings`, `Feedback`, `AuditLog`, `NotificationChannel`, `NotificationPreference`, `PushSubscription`, `DataBackup`, `UserAchievement`, `RateLimit`, `Device`, `IdempotencyKey`.
## When Making Changes
1. **Read before modifying** — understand the existing code patterns.
2. **Run verification** after changes: `pnpm typecheck && pnpm lint && pnpm test && pnpm format:check && pnpm build`
3. **German UI text** — all user-facing strings go through `t("key")` with translations in both `messages/de.json` and `messages/en.json`.
4. **Don't over-engineer** — keep changes focused. No speculative abstractions.
5. **Update `docs/STATUS.md`** when completing tasks.
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