Room preview (JoinBeforeNavigate -> RoomCard via getRoomSummary) was already
built and, verified after the Synapse 1.156 upgrade, works via the SDK's unstable
im.nheko.summary endpoint (the old 'blocked' flag tested the wrong /v1 path).
Polish the preview card with the summary fields the endpoint returns:
- join-rule chip (Restricted / Ask to join / Invite only / Private; public shows
none) + an Encrypted badge (from im.nheko.summary.encryption).
- knock-rule rooms now show a 'Request to join' button (mx.knockRoom) instead of a
plain Join that would fail — mirrors the RoomIntro knock flow.
Props are optional so other RoomCard usages are unaffected. LOTUS_TODO updated:
Room Preview BLOCKED -> done; Synapse 1.155 -> 1.156.0. 738 tests pass.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
jared
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