Root cause: systemd PrivateDevices=yes hid /dev/ttyUSB* from the service,
preventing .198 from connecting to its Heltec V3 after the security hardening.
Changes:
- Set PrivateDevices=no in systemd service (serial access needs physical devices;
other hardening layers remain: NoNewPrivileges, ProtectSystem, RestrictNamespaces)
- Add SupplementaryGroups=dialout for explicit serial permissions
- Add fallback auto-detect when configured serial path fails to open
- Add exponential backoff on reconnect (5s→60s cap) to reduce log spam
- Add pre-open device existence check with actionable error messages
- Add udev rule (99-mesh-radio.rules) for stable /dev/mesh-radio symlink
- Add /dev/mesh-radio to serial candidate list (checked first)
- Add Connect button per detected device in Mesh UI
- Deploy udev rule to both servers and ISO build
- Fix FEDI_HASH unbound variable in deploy script
- Fix deploy binary step to handle hung service stop gracefully
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Generate unique random passwords at first boot for Bitcoin RPC, all database
services (mempool, btcpay, immich, penpot, mysql-root), and Fedimint gateway.
Credentials stored in /var/lib/archipelago/secrets/ with 600 permissions.
Scripts: first-boot-containers.sh, deploy-to-target.sh, deploy-bitcoin-knots.sh,
container-doctor.sh all read from secrets files instead of hardcoded values.
Rust backend: new bitcoin_rpc module reads password from secrets file, env var,
or dev fallback. All .basic_auth() calls and container config strings now use
the shared credential reader instead of hardcoded "archipelago123".
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Bitcoin relay (mesh/bitcoin_relay.rs):
- BlockHeaderCache: stores latest block headers from internet peers for SPV
- RelayTracker: tracks in-flight TX and Lightning relay requests
- Builder functions: block header announcements (Ed25519 signed),
TX relay request/response, Lightning invoice relay/response
- All amounts as u64 sats, never float
- 4 unit tests
Emergency alerts (mesh/alerts.rs):
- AlertConfig: dead man switch settings, GPS, emergency contacts
- DeadManSwitch: background timer, auto-trigger after configurable interval
(default 6h), signed alert broadcast with GPS coordinates
- check_in() resets timer, is_triggered() checks elapsed time
- GPS as integer microdegrees (Coordinate type from message_types)
- Disk persistence for config
- 4 unit tests
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Create mesh/session.rs: SessionManager for Double Ratchet state lifecycle
- Lazy-loads sessions from disk on first message
- Saves after every encrypt/decrypt (chain key advancement)
- Per-DID storage at {data_dir}/ratchet/{sha256(did)}.json
- Session info API for RPC status reporting
- Zeroize on drop for all key material
- Tests: store+load roundtrip, encrypt/decrypt through manager, session removal
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
