Add packet flow collector in agent v0.2.0 using Linux AF_PACKET sockets to capture and aggregate IPv4 TCP/UDP/ICMP flows from VM interfaces (tap/fwln) with configurable window/limit, implement parse_packet_flow to extract 5-tuple from raw Ethernet frames with VLAN tag handling, add selected_flow_interfaces to choose best interface per VM NIC for packet capture, include packet collector
Add NodeAgent and TrafficFlow models to track agent status and network flows, implement /agents/heartbeat endpoint to receive interface counters, conntrack flows, firewall status, and nftables ruleset hash from agents, add nexafabric-agent.py Python script to collect host telemetry including VM/LXC interface hints via tap/fwbr regex matching, conntrack flow parsing with protocol/state/byte counters, and pve-firewall status checks,
Add minimum write privileges section covering VM.Audit and VM.Config.Network requirements for firewall orchestration, document NexaFabric comment marker approach for safe rule replacement, clarify that only VM/LXC-level rules with concrete workload targets are supported for live apply while security groups remain preview-only, add firewall interface checkbox requirement for enforcement, document