onlyworlds 0.8.0

The hidden mark (keel #421), live in production since 2026-10-20 09:24.

• is_resync_required names every case keel sends it for since its hidden mark (keel #421), not only a guest's; a /changes delete row carries reason (deleted, hidden, out_of_view), read as any other key of the row.
• view_as= on get, list_page and iter_elements, sent as as (keel #421, view as): the owner's key reads as a member (a membership id), as a Character's guest (a Character id) or as the public ("public"). A member key gets 403 view_as_owner_only (is_view_as_owner_only); an element hidden from that reader is 404, never 410; an unknown value is 422. Until keel's hidden mark is on, keel answers 422 (an unknown parameter).
• ApiError.resync_reason ("role", "view" or None): why /changes answered 409 resync_required, from the envelope's reason (keel #421, keel PR 103; only while keel's hidden mark is on). A /changes page then carries epoch_reason beside epoch, read as any other key of the page.
• The resync instruction adds the hidden mark's reasons to 0.7.1's keep (the Captain, 2026-10-20): after a 409 resync_required, walk again from the start; reason role (the key's own role or membership moved): keep what the local copy holds that the walk no longer names; reason view, or a delete row with reason hidden: drop it; no reason (keel's hidden mark off): keep it, a reset never empties a copy. A tool never empties a copy on its own. is_resync_required, ChangeWalk and Client.changes say so.