Get Org Activities

Public endpoint — get all non-cancelled, non-draft activities for an organization. Returns three buckets: live_now, upcoming, past (capped at 20 each). Excludes cover_image (base64 too large for lists) and circle-only activities.

2026-05-23 — Accepts an optional session so signed-in viewers get their dismissed activities filtered out of this list. An org profile is a natural backdoor for re-surfacing rejected activities ("I told ActivitIA I don't like this event — why is it on the organiser's page?"), and the audit explicitly called out organisation activity lists as a surface that must respect the "Not my vibe" signal. Guest callers behave exactly as before (no filter).