The shared chat session sheet (iOS chat + macOS webchat) gains server-backed
search (sessions.list search param, 250ms debounce, cancellation-safe local
fallback when offline), an Active/Archived scope, swipe/context actions for
pin/rename/archive with optimistic updates and rollback, pin indicators, and
restore-on-open for archived rows. Archiving the open session switches back
to the main session so the composer never points at a send-rejecting session.
OpenClawChatTransport consolidates the two list requirements into canonical
listSessions(limit:search:archived:) with forwarding sugars (unreleased
internal API; all in-repo conformers updated: iOS gateway transport, demo and
fixture transports, previews, macOS webchat, test fakes). macOS webchat also
implements patchSession, giving the sheet's controls a live transport there.
OpenClawChatSessionEntry becomes var-based and gains pinnedAt/archivedAt;
the two full-init rebuild blocks in ChatViewModel collapse to copy-mutation
(the pattern that silently dropped newly added fields), preserving main's
model-identity/thinking-metadata semantics. A shared session list organizer
mirrors gateway ordering (pinnedAt desc, updatedAt desc, key) for cached and
offline lists, and pinned sessions survive the 24h recency cutoff in the
session picker.
Refs #100712
