v1.7.0

Added

• Dynamic LAN Auto-Discovery Engine (internal/mesh/discovery.go, internal/mesh/discovery_test.go):
  • Zero-configuration local network peer detection broadcasting periodic announcements over UDP port 9085.
  • Multi-interface broadcast traversal automatically reaching across all physical LAN adapters and link interfaces.
  • Strict packet bounds checking (capped to 1 KB datagrams) and cluster domain key isolation (dock-radar-cluster).
  • Automatic peer TTL expiration and state synchronization into the central node mesh registry.
• SWIM-Based Gossip Protocol Consensus Engine (internal/mesh/gossip.go, internal/mesh/gossip_test.go):
  • Distributed failure detection implementing Structured Weakly-consistent Infection-style Process Group Membership (SWIM).
  • Two-phase health probing: direct randomized peer pings with configurable timeouts (800ms) and indirect fallback pings via $k$-random helper nodes ($k=3$) to eliminate false network hiccup penalties.
  • Incarnation refutation protocol: nodes receiving suspicion updates concerning themselves automatically increment local incarnation counters and broadcast alive assertions to immediately refute transient network partitions.
  • State update precedence guarantees (Dead > Suspect > Alive within identical incarnation numbers; higher incarnation always supersedes lower).
  • Configurable suspicion timeout watchdogs transitioning unrefuted suspect nodes to dead status.
• Cluster Mesh Discovery & Gossip REST APIs (internal/api/gossip.go, internal/api/gossip_test.go):
  • GET /api/mesh/discovery: Returns auto-discovery listener status, broadcast port, cluster key, and detected LAN peers.
  • POST /api/mesh/discovery: Manually triggers an immediate broadcast announcement across all local network interfaces (requires RoleAdmin).
  • GET /api/mesh/gossip: Reports SWIM cluster health consensus, local incarnation, member states, and transmission counters.
  • POST /api/mesh/gossip: High-performance HTTP peer transport for exchanging SWIM protocol packets, membership state infection, and ACK handshakes.
• Prometheus Metrics Exporter Extension (internal/metrics/prometheus.go):
  • Exposes dock_radar_mesh_discovery_enabled, dock_radar_mesh_discovery_peers_detected_total, dock_radar_mesh_discovery_beacons_sent_total, dock_radar_mesh_discovery_beacons_received_total, dock_radar_mesh_gossip_incarnation, dock_radar_mesh_gossip_members, dock_radar_mesh_gossip_messages_sent_total, and dock_radar_mesh_gossip_messages_received_total gauges.
• Multi-Host Cross-Node Overview Dashboard (web/dist/index.html):
  • Real-time LAN auto-discovery status card with active UDP beacon indicator and immediate broadcast trigger button.
  • SWIM protocol consensus card displaying live member states (🟢 Alive, 🟡 Suspect, 🔴 Dead), incarnation counter, and round-trip ping latencies.
  • Interactive multi-host topology grid showing compute load (CPU/RAM) and container allocation per node with instant one-click node isolation filters.