Server-side endpoint GET /api/projects/{id}/timeline.ics returns a
VCALENDAR + one VEVENT per actual deadline (VALUE=DATE all-day) and
appointment (UTC timestamp). Projected / milestone / off_script rows
are deliberately skipped — faraday-Q6 / m's pick: a calendar feed
must never carry predicted dates the user never confirmed, otherwise
Outlook fills with rule_code-derived events that erode trust.
FormatTimelineICS reuses the existing caldav_ical.go escape helpers
and writes through the same canonical UIDs (paliad-deadline-<id> +
paliad-appointment-<id>) so a re-subscribe updates entries instead
of duplicating them. Stable across re-exports = lawyer-safe.
Visibility piggybacks on ProjectionService.For + ProjectService.GetByID
(same gates as the chart page handler). Content-Disposition filename
slugged for portable ASCII so Outlook + Apple Calendar agree.
4 tests pin the contract: only deadline/appointment kinds emit
VEVENTs; undated rows skip cleanly; RFC 5545 §3.3.11 escaping for
; , \ \\n; empty input still produces a valid VCALENDAR.
i18n: 1 new key DE+EN.
Design ref: docs/design-project-chart-2026-05-09.md §7.8.
mAi
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