Replace manually configured peer connections with a passphrase-based gossip
swarm. Peers sharing the same passphrase automatically discover each other
via mainline DHT and join an iroh-gossip topic.
Key changes:
- Add gossip.rs: iroh-gossip swarm with DHT bootstrap, heartbeat, and
graceful shutdown that publishes neighbor list
- Add setup.rs: interactive config wizard replacing generate-config
- Add rate_limit.rs: token-bucket TX rate limiter derived from LoRa air time
- Remove network.rs: old direct P2P connection management
- Config: remove [[peers]] section, add passphrase to [bridge], update
radio defaults to MeshCore US/Canada recommended values
- Packet: rename Envelope to GossipFrame, simplify wire format (drop
version byte and seq number)
- Router: unify dedup into single content-hash cache, add rate limiting
- Identity: use ephemeral keypair per launch instead of persistent secret key
- Radio: improve config negotiation (GetConfig-first strategy), add device
info tracking
- TUI: complete redesign with network/swarm panel, sparkline activity
charts, color-coded RSSI/SNR, and shutdown overlay
iroh QUIC datagrams for peer-to-peer networking with NAT traversal,
donglora-client for radio access (direct USB or mux), ratatui TUI
with four-panel dashboard (peers, radio config, stats, packet log).
- Packet envelope with origin tracking, sequence numbers, RSSI/SNR
- Dual dedup: iroh-level (origin+seq) and radio echo (blake3 hash)
- SNR filtering per PROTOCOL.md (forward GOOD+MARGINAL, drop rest)
- Auto-generate config + identity on first run
- Graceful mux config fallback (adopts locked config if SetConfig rejected)
- WouldBlock workaround for donglora-client socket timeout bug
- Reconnect with exponential backoff on dongle disconnect
- CLI: show-id, generate-config subcommands, --log-only headless mode
swaits