Adds an lxma://<hash>:<pubkey> QR overlay reachable from Settings and
from a new header row at the top of the Contacts tab. Including the
public key lets Columba/Sideband skip the PENDING_IDENTITY round-trip.
Contacts list stays visible even with no saved contacts so the header
row is always reachable; the empty-state floats above it.
Contacts/Messages/Nodes screens consumed long-press as soon as they
loaded, which surfaced delete/menu dialogs instead of blanking the
display. Gate per-screen long-press consumption on _focusActive so the
delete affordance only fires after the user has navigated into the
list with up/down/enter. From the resting tab view, long-press falls
through to main.cpp and powers the screen off — same behaviour as the
home screen.
Regenerated Montserrat 10/12/14 with Cyrillic and Latin Extended
Unicode ranges so messages in Russian, Ukrainian, Bulgarian, and
accented European languages render properly instead of rectangles.
- Fix LXMF wire format: standardize on opportunistic [src:16][sig:64][content]
- Fix LXMF signature: sign(dest||src||packed) per spec, remove message_hash
- Fix MsgPack interop: handle both str and bin types for title/content
- Radio defaults changed to Balanced preset (SF9/BW250k/CR5/TX14)
- Messages screen: sorted by most recent, preview with You:/Them:, green unread dot, timestamps
- Status bar: replace LoRa/BLE/WiFi text with signal bars (green=connected, red=offline)
- Home screen: remove Unread info (shown in Messages tab)
- Contacts screen added (Friends tab)
- Identity manager: multi-slot identity support with per-slot display names
- Message store: fix peer hash truncation, SD directory creation, .bak file leak
- Settings: check for updates, active identity display, info diagnostics
drkhsh