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- Geohash DMs and their acks embed a random sender ID per envelope instead of the mesh peer ID, which linked geohash personas to the device (iOS #1718). Favorites envelopes are unchanged. - Decode enforces per-type payload caps on compressed and uncompressed payloads, matching iOS PacketPayloadLimits; media types keep the existing ceiling. The compression-ratio guard becomes DEFLATE's 1032:1 bound (iOS #1719, decoder part only). - Triple-tapping the logo asks for confirmation before a panic wipe, and the outcome (wiped, or incomplete) is posted to the chat (iOS #1588). - Pin that a blocked geohash sender gets no delivery ack.