Adds a "Share room" action to the room overflow menu (visible to
EVERYONE — share isn't host-restricted; the host-only "Edit room"
row is now gated alongside it). Builds an `nostr:naddr1...` URI
from the room's kind / hostPubkey / dTag via Quartz's
`ATag.toNAddr()` helper and hands it to the system share sheet
with the room title as a preview blurb.
shareRoomNaddr(context, event):
aTag = ATag(event.kind, event.pubKey, event.dTag(), null)
naddr = aTag.toNAddr()
text = "<title> — nostr:<naddr>"
Intent.ACTION_SEND → createChooser
AudioRoomFullScreen — overflow menu now visible to all members.
Share row appears for everyone; Edit row appears only when the
local user is the room's host.
Strings: audio_room_share_action.
Step 3 (zap entry points) is intentionally NOT in this commit —
the existing zap UI is built around the per-note ZapReaction in
ReactionsRow.kt with long-press-to-set-amount + click-to-zap, which
is heavy to embed inside the audio room. The reactions sub already
pulls kind 9735 receipts so paid zaps SURFACE in the floating
overlay; the SEND path can ship as a follow-up that wires the
existing `accountViewModel.zap(note, amount, ...)` flow with
ZapPaymentHandler from inside the participant context sheet.
Claude
cc33bdbb92