Backend
- api/messages.rs covers send/pop/reply/status with an externally
tagged MessageDestination enum that matches the daemon's
{ip|pk: ...} body shape; pop_message uses an inflated request
timeout to outlast the long-poll window
- api/topics.rs implements default action, topic CRUD, sources
whitelist, and forward-socket get/set/remove. POST /topics ships
the raw base64 string as the body (not JSON); path segments are
percent-encoded inline (topics contain '/' and '+')
- api/pubkey.rs resolves an overlay IPv6 to a hex public key
- poller spawns a third long-poll loop on /messages?peek=false
that fans every inbound message into a 200-deep ring buffer and
emits messages://incoming for the UI
Frontend
- messages store: live inbox via the event, persisted outbox via
tauri-plugin-store keyed under outbox.json
- ComposeMessage form: ip/pk toggle, optional UTF-8 topic and
payload that get base64-encoded with a TextEncoder-based helper
- MessageList renders printable payloads decoded; binary payloads
fall back to a "(N bytes binary)" hint
- Topics view: split layout with whitelist on the left, per-topic
sources/forward editor on the right; default-action toggle is
surfaced at the top
