- SyncTypeFlags phantom-bit tests used bits 8/9/10 as unmapped examples;
board/prekey/group now map those, so use bits 11+ (still unmapped).
- rawValueInitNormalizesPhantomBits: highest known bit is now 10, so the
flags serialize to 2 bytes, not 1.
- Board/fragment/announce sync tests silence the prekey round (added by the
prekeys feature; default 60s schedule fires at the maintenance barrier).
- DiagnosticsMockContext: conform to the CommandContextProvider members added
by private-groups (group*) and cashu-chips (sendPublicMessage).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
New MessageType 0x23 carries TLV-encoded board posts and tombstones,
self-signed with the author's Ed25519 key ("bitchat-board-v1" /
"bitchat-board-del-v1" domains) so notices verify without the author
present. BoardStore persists raw signed packets under Application
Support/board/ (200 posts, 5 per author, oldest evicted; expiry sweep;
tombstones retained until the deleted post's original expiry) and is
wiped on panic.
Board packets join gossip sync as bit 8 of the existing variable-length
types bitfield (a second byte old decoders already accept and ignore),
with a 60s round and its own capacity, served straight from the board
store so retention has one owner. Posts relay like broadcasts; urgent
posts get the announce-class TTL cap.
UI: a pin button in the header opens the board for the current channel
(geohash board, or mesh-local board), with urgent-pinned newest-first
listing, compose with urgent toggle and 1/3/7-day expiry, and
swipe-delete on own posts. Geohash posts also publish one-way as
Nostr kind-1 location notes when relays are reachable.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
