Files
HealthLog/docs
Marc-André Bombeck d7d8e437ee feat(insights): let a caller choose the derived-metric window
`GET /api/insights/derived` accepts `windowDays`, bounded to 1..90, and
threads it to the dispatcher. Omitting it changes nothing: every engine
keeps its own default, so a caller that asks for nothing reads exactly
what it read before.

Ninety is where the tier this route promises runs out. The rollup router
opens its WEEK floor at 91 days, and the baseline engines cannot compose
a spread from WEEK buckets, so a 91-day request falls through to a raw
`measurement.findMany` with no row cap — for a densely sampled type that
is a full history scan, and the analytics-read budget allows 120 of them
a minute per account. The trailing `series` is capped at 30 points
regardless, so past the ceiling a wider window would only broaden the
mean behind the value. Out of range is a 422 rather than a clamp.

An unhonoured window is visible rather than silent. `provenance.windowDays`
is the window the engine actually used and `coverage.historyDays` the days
that actually backed it, so a three-week record answering a thirty-day
request reports both numbers instead of implying coverage it does not
have. `HEALTH_SCORE` composes fixed per-pillar windows and reports the
widest; a new suite freezes that it is the only metric that does, so an
arm added later cannot quietly drop the parameter.

Recovery keeps its canonical resolution under the wider window. A worn
band stamps the wake morning and the computed proxy the night before, and
only `resolveCanonicalRecovery` pairs them; a test seeds forty such
nights, asks for sixty days, and holds the answer to forty nights with a
flat trend — a bypass leaves eighty rows and a false climb.

Contract: model `WellnessScoreValue` field for field and publish it. The
envelope's `value` has to stay an open record because one route serves
eighteen differently-shaped metrics, so nothing can `$ref` the shape and
it went out undocumented — `series`, `daysInWindow` and `asOf` were on
the wire with no way to find them short of inspecting a live response. It
is registered in the forced-components slot instead, held against the
runtime interface by a test, and the fields it does not cover are named
in the schema comment so the remaining gap is known rather than invisible.
2026-08-24 02:00:55 +02:00
..
2026-06-19 22:20:31 +02:00

docs/ — internal reference + operator playbooks

The user-facing documentation lives at https://docs.healthlog.dev — that's the canonical surface for self-hosting guides, integration walkthroughs, AI-provider setup, and the doctor-report workflow.

The files in this directory are the internal operator playbooks, audit notes, and machine-readable specs that ship alongside the source:

  • api/ — the OpenAPI 3.1 spec for the native-client subset (iOS DTO codegen target). See api/README.md for the preview commands. Also home to the MCP-server contract: api/mcp-capabilities.md (tools, resources, prompts, write model) and api/mcp-skills.md (building a connector / skill).
  • ops/ — backup / restore + encryption-key-rotation playbooks. These are the runbooks an operator reaches for during an incident.
  • self-hosting/ — horizontal-scaling notes (HEALTHLOG_PROCESS_TYPE=web|worker|all) and the deploy-pipeline recipe. Routine install steps stay on docs.healthlog.dev. Includes self-hosting/mcp.md — enabling the off-by-default MCP connector and pointing Claude.ai / ChatGPT / Claude Desktop at it, and self-hosting/sso.md — OIDC SSO login: IdP setup, the identity-pinning security model, OIDC_ONLY consequences, and the break-glass runbook. Also self-hosting/geolite2.md — bringing your own offline GeoLite2 databases via GEOLITE2_DIR instead of sending login IPs to a third-party lookup. And self-hosting/account-sharing.md — letting one account on the instance open another's health record: the three access levels, the eight sections a grant can be narrowed to, managed profiles for somebody with no login and the guardians who look after them, what revocation does and does not undo, and which trust properties of the instance are unchanged by any of it.
  • migration/ — release-by-release migration notes. Read the entry for the version you're upgrading from.
  • audit/ — per-release audit summaries archived for forensic traceability.
  • apple-store-connect-checklist.md — the iOS submission gate.
  • doctor-report.md — PDF generator design notes.
  • codex-protocol-spec.md — Codex / ChatGPT OAuth protocol reverse-engineering notes.
  • ui-guidelines.md — UI / a11y house style.

If you're a self-hoster looking to spin up an instance, start at https://docs.healthlog.dev or jump to the Quick Start in the project README.