A forecast period was one all-day event over every day it might fall on,
so a period of a few days showed up as a week-long estimate next to the
logged ones. Each feed now carries a forecast style:
- EXACT: the calculated period only, from the most likely start for the
predicted number of bleeding days.
- MARGIN: that event, plus separate "possible" events for the days it may
start earlier and the days it may still run on, each only where the
band reaches that side. Discreet titles use an open dot for them.
- BAND: the single range, unchanged.
Migration 0495 adds the column with BAND as its default, so every live
feed keeps the events it serves. A feed turned on from now on starts on
MARGIN, set by the mint route. PATCH changes it, rotate copies it, the
status and the audit diff carry it, and the settings card offers it with
a one-line explanation of the chosen style. The horizon and its stop rule
are the same in every style, and the period event keeps its UID across
styles so a calendar updates it in place.
GET /api/cycle/feed/<hlf_token>[.ics] answers any calendar app with the
record's forecast as RFC 5545: all-day events for the next few periods
over their widening windows, optionally past periods, and for a
conception goal that asks for it the next fertile window. Dates and a
title only; discreet titles and the calendar name "HealthLog" by default.
The body is built live on every fetch in the record's own zone and
language, never the request's. ETag is the content hash and a matching
If-None-Match answers 304; DTSTAMP moves only when the content does.
The feed is anonymous, so every gate is read per fetch: the auth-surface
limit before any lookup, the token's shape, the HMAC lookup of a live
feed, a per-token bucket, then the record and carrier not pending
deletion, the operator's external-access switch, cycle tracking for the
record, and for a feed a delegate minted, a live MANAGE grant covering
cycle. Every miss is the same 404.
/api/cycle/feed-subscription (status, turn on, options, turn off) and
its rotate are cookie-only through requireRecordAuth("manage", "cycle"),
with a fresh proof on turning on and rotating and a per-actor mint
bucket. The URL is returned once; the status carries the prefix, the
options, the fetch statistics as a calendar-app family and the
projection state.
The hlf_ family is registered with the path and token redactors, the
secret-shape refusal, the proxy's public paths and edge headers, the
URL-credential, sharing, recent-proof, step-up and module-gate guards,
the error-code catalogue, the activity feed and the destructive-control
registry. The cycle settings tab gains the subscription card and the
predictions panel lists the later cycles.
Marc-André Bombeck