Show a small lock icon next to the timestamp on each DM message:
- NIP-17 (ChatMessageEvent, ChatMessageEncryptedFileHeaderEvent): filled
lock in primary color — relay can't see sender/recipient
- NIP-04 (PrivateDmEvent): open lock in muted gray — legacy encryption,
metadata visible to relays
Matches Android's IncognitoBadge pattern. Both NIP-04 and NIP-17 messages
in the same 1-on-1 conversation produce identical ChatroomKeys, so they
merge into one conversation — the badge is the only way to tell them apart.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
nrobi144