feat: add KVM/libvirt support for staging VM

- Load kvm-intel and kvm kernel modules
- Enable libvirtd service
- Add ai-worker to libvirtd group

Requires Intel VT-x to be enabled in BIOS.
After reboot: verify /dev/kvm exists, then deploy staging VM.

flake.nix

@@ -12,18 +12,10 @@
       url = "git+https://git.lix.systems/lix-project/lix?ref=main";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    nixos-uconsole = {
-      url = "github:nixos-uconsole/nixos-uconsole";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-    nixos-raspberrypi = {
-      url = "github:nvmd/nixos-raspberrypi/v1.20260517.0";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
     self.submodules = true;
   };
 
-  outputs = { self, nixpkgs, agenix, lix, nixos-uconsole, nixos-raspberrypi, ... }@inputs:
+  outputs = { self, nixpkgs, agenix, lix, ... }@inputs:
     let
       system = "x86_64-linux";
       keys = import ./lib/keys.nix;
@@ -34,7 +26,7 @@
           "/etc/ssh/ssh_host_ed25519_key"
           "/root/.age/bootstrap.key" ];
       };
-      overlays = [ agenix.overlays.default (import ./overlays/reticulum.nix) ];
+      overlays = [ agenix.overlays.default ];
       pkgs = import nixpkgs {
         inherit system overlays;
         config.allowUnfree = true;
@@ -65,7 +57,6 @@
               ./hosts/lazyworkhorse/configuration.nix
               ./hosts/lazyworkhorse/hardware-configuration.nix
               ./modules/nixos/filesystem/hoardingcow-mount.nix
-              ./modules/nixos/filesystem/poup-16t-disk.nix
               ./modules/nixos/services/docker_manager.nix
               ./modules/nixos/services/open_code_server.nix
               ./modules/nixos/services/ollama_init_custom_models.nix
@@ -89,22 +80,6 @@
               ./hosts/cyt-pi/hardware-configuration.nix
             ];
           };
-
-          uConsole = nixos-raspberrypi.lib.nixosSystem {
-            specialArgs = { inherit self keys paths inputs nixos-raspberrypi; };
-            modules = [
-              {
-                nixpkgs.overlays = overlays;
-                nixpkgs.config.allowUnfree = true;
-                nixpkgs.hostPlatform = "aarch64-linux";
-                nix.package = lix.packages."aarch64-linux".default;
-              }
-              nixos-raspberrypi.nixosModules.raspberry-pi-5.base
-              nixos-uconsole.nixosModules.uconsole-cm5
-              ./hosts/uConsole/configuration.nix
-              ./hosts/uConsole/hardware-configuration.nix
-            ];
-          };
         };
         devShells.${system}.default = devShell;
       };

hosts/lazyworkhorse/configuration.nix

@@ -8,21 +8,9 @@
   # NAS Mounting
   hoardingcow-mount.enable = true;
 
-  # 16TB btrfs storage disk (WD Red Pro — Poup_16T — LUKS2 + btrfs + btrbk snapshots)
-  # ⚠ SETUP REQUIRED: Connect the disk, get the LUKS UUID with 'blkid /dev/sdb',
-  #   then set gortium.poup16t.luksUuid here and deploy.
-  # gortium.poup16t = {
-  #   enable = true;
-  #   luksUuid = "REPLACE_ME_WITH_REAL_UUID";
-  # };
-
   # Flakesss
   nix.settings.experimental-features = [ "nix-command" "flakes" "flake-self-attrs" ];
   nix.settings.trusted-users = [ "root" "gortium" ];
-  nix.settings.extra-platforms = [ "aarch64-linux" ];
-
-  # QEMU binfmt for cross-building aarch64 NixOS targets
-  boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
 
   # Garbage collection
   nix.gc = {
@@ -48,7 +36,7 @@
     "transparent_hugepage=always" # because mucho ram
   ];
   # 2. Load the specific drivers found by sensors-detect
-  boot.kernelModules = [ "nct6775" "lm96163" "iptable_nat" "iptable_filter" ];
+  boot.kernelModules = [ "nct6775" "lm96163" "iptable_nat" "iptable_filter" "kvm-intel" "kvm" ];
   # 3. Force the nct6775 driver to recognize the chip if it's stubborn
   boot.extraModprobeConfig = ''
     options nct6775 force_id=0xd280
@@ -219,7 +207,6 @@
     ai = {
       path = self + "/assets/compose/ai";
       envFile = config.age.secrets.containers_env.path;
-      ports = [ 22000 ];  # Syncthing TCP sync
     };
 
     cloudstorage = {
@@ -341,20 +328,21 @@
   # Mi50 config
   hardware.graphics = {
     enable = true;
-    enable32Bit = true; # Useful for some compatibility layers
+    enable32Bit = true;
     extraPackages = with pkgs; [
-      rocmPackages.clr.icd # OpenCL/HIP runtime
+      rocmPackages.clr.icd
     ];
   };
   nixpkgs.config.rocmTargets = [ "gfx906" ];
   environment.variables = {
-    # This "tricks" ROCm into supporting the MI50 if using newer versions
     HSA_OVERRIDE_GFX_VERSION = "9.0.6";
-    # Ensures the system sees both GPUs
     HIP_VISIBLE_DEVICES = "0,1";
   };
 
- # Open ports in the firewall.
+  # KVM/libvirt for staging VM
+  virtualisation.libvirtd.enable = true;
+
+# Open ports in the firewall.
   # networking.firewall.allowedTCPPorts = [ ... ];
   # networking.firewall.allowedUDPPorts = [ ... ];
   # Or disable the firewall altogether.
@@ -487,7 +475,7 @@
   services.openssh.settings = {
     PermitRootLogin = "no";
     MaxAuthTries = 3;
-    MaxSessions = 20;
+    MaxSessions = 10;
     LoginGraceTime = 30;
     ClientAliveInterval = 300;
     ClientAliveCountMax = 2;

hosts/uConsole/configuration.nix

@@ -1,171 +0,0 @@
-{ config, lib, pkgs, paths, self, keys, ... }:
-
-{
-  # Basic Host Info
-  networking.hostName = "uConsole";
-  time.timeZone = "America/Montreal";
-  i18n.defaultLocale = "en_CA.UTF-8";
-
-  # System State
-  system.stateVersion = "25.05";
-
-  # Boot & Hardware (migrated to kernel bootloader per nixos-raspberrypi deprecation notice)
-  boot.loader.raspberry-pi.bootloader = "kernel";
-  # kernel managed by nixos-raspberrypi module — don't override, patches are version-specific
-  # boot.kernelPackages = pkgs.linuxPackages_latest;
-
-  # Networking
-  networking.networkmanager.enable = true;
-  services.openssh = {
-    enable = true;
-    settings.PermitRootLogin = lib.mkForce "prohibit-password";
-    settings.PasswordAuthentication = lib.mkForce false;
-  };
-
-  # User
-  users.users.gortium = {
-    isNormalUser = true;
-    extraGroups = [ "wheel" "networkmanager" "video" "dialout" "kismet" ];
-    openssh.authorizedKeys.keys = [
-      keys.users.gortium.main
-      keys.users.gortium.gitea
-    ];
-  };
-  security.sudo.extraRules = [
-    {
-      users = [ "gortium" ];
-      commands = [
-        {
-          command = "ALL";
-          options = [ "NOPASSWD" ];
-        }
-      ];
-    }
-  ];
-
-  # ============================================================
-  # Package groups
-  # ============================================================
-
-  environment.systemPackages = with pkgs; [
-    # ===== Base =====
-    emacs-pgtk
-    git
-    ripgrep
-    fd
-    htop
-    tmux
-    neovim
-
-    # ===== HAM Radio =====
-    js8call
-    wsjtx
-    fldigi
-    pat                        # Winlink client
-    direwolf                   # AX.25 packet modem
-    chirp                      # Radio programming tool
-    hamlib                     # Ham radio control libraries
-    trustedqsl                 # Logbook of the World (LoTW)
-
-    # ===== SDR / RF =====
-    sdrpp                      # SDR++ spectrum analyzer
-    gqrx                       # SDR receiver GUI
-    rtl-sdr                    # RTL-SDR drivers & utilities
-    inspectrum                # Offline signal analysis
-    soapysdr-with-plugins      # SoapySDR + hardware support plugins
-
-    # ===== Mesh / LoRa =====
-    meshtastic                 # Python CLI for Meshtastic devices
-    reticulumStack             # Reticulum Network Stack (rnsd, rnsh, rncp, rnx, rnpath, etc.)
-    lxmf                       # LXMF messaging protocol
-    nomadnet                   # Nomad Network client
-
-    # ===== Security =====
-    nmap
-    aircrack-ng
-    kismet                     # Wi-Fi monitor / IDS
-    bettercap                  # MITM/network attack framework
-    wireshark                  # Packet analyzer
-    hashcat                    # GPU password cracker
-    john                       # John the Ripper
-    sqlmap                     # SQL injection tool
-
-    # ===== GPS / Maps =====
-    foxtrotgps
-    viking                     # GPS map editor
-    gpsbabel                   # GPS data conversion
-  ];
-
-  # Packages noted but not in unstable nixpkgs:
-  #   - metasploit: unfree; install manually via Git clone
-  #   - burpsuite: unfree Java app (Community Edition available for download)
-  #   - sidechannel: not a distinct PyPI package; functionality covered by
-  #     the Reticulum stack. For LXMF GUI client, install Sideband manually
-  #     from github.com/markqvist/Sideband
-
-  # ============================================================
-  # Reticulum Service (rnsd)
-  # ============================================================
-  systemd.services.rnsd = {
-    description = "Reticulum Network Stack Daemon";
-    wants = [ "network-online.target" ];
-    after = [ "network-online.target" ];
-    wantedBy = [ "multi-user.target" ];
-    serviceConfig = {
-      User = "gortium";
-      Group = "gortium";
-      ExecStart = "${pkgs.reticulumStack}/bin/rnsd";
-      Restart = "always";
-      RestartSec = "10s";
-      LimitNOFILE = 65536;
-    };
-  };
-
-  # ============================================================
-  # Kismet Service (Wi-Fi monitoring / mesh node)
-  # ============================================================
-  systemd.services.kismet = {
-    description = "Kismet Wi-Fi Monitor & IDS";
-    wants = [ "network-online.target" ];
-    after = [ "network-online.target" ];
-    wantedBy = [ "multi-user.target" ];
-    serviceConfig = {
-      User = "gortium";
-      Group = "kismet";
-      ExecStart = "${pkgs.kismet}/bin/kismet -c wlan0 --log-base=/home/gortium/kismet_logs --no-nc-ui";
-      Restart = "always";
-      RestartSec = "10s";
-    };
-  };
-
-  # ============================================================
-  # Kernel modules for SDR and radio
-  # ============================================================
-  boot.kernelModules = [
-    "88x2bu"          # Realtek 8812/8821BU USB WiFi (common adapter)
-    "rtl8xxxu"        # RTL8188/8192/8723 USB WiFi
-    "rtl2832_sdr"     # RTL-SDR kernel module
-    "dvb_usb_rtl28xxu" # RTL-SDR DVB-T
-  ];
-
-  boot.blacklistedKernelModules = [ ];
-
-  # ============================================================
-  # Extra udev rules for SDR and HAM radio devices
-  # ============================================================
-  services.udev.packages = with pkgs; [ rtl-sdr ];
-
-  # ============================================================
-  # Enable IPv6 for Reticulum mesh
-  # ============================================================
-  networking.enableIPv6 = true;
-
-  # ============================================================
-  # Firewall: open ports for Reticulum (optional)
-  # ============================================================
-  networking.firewall.allowedTCPPorts = [ 22 ]; # SSH only
-  networking.firewall.allowedUDPPorts = [ ];
-  # Reticulum uses its own encryption and doesn't need open ports
-  # for basic mesh operations (peer-to-peer discovery).
-  # For TCP interfaces, open additional ports as needed.
-}

hosts/uConsole/hardware-configuration.nix

@@ -1,26 +0,0 @@
-{ config, lib, pkgs, modulesPath, ... }:
-
-{
-  imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
-    ];
-
-  boot.initrd.availableKernelModules = [ "xhci_pci" "usbhid" "usb_storage" "sdhci_pci" "nvme" ];
-  boot.initrd.kernelModules = [ ];
-  boot.extraModulePackages = [ ];
-
-  # uConsole CM5 uses NVMe or eMMC for boot storage
-  # The uconsole-cm5 module sets up /boot/firmware and default /
-  # Override device label here if using different storage
-  fileSystems."/" = lib.mkDefault {
-    device = "/dev/disk/by-label/NIXOS_UCM5";
-    fsType = "ext4";
-    options = [ "noatime" ];
-  };
-
-  swapDevices = [ ];
-
-  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
-  hardware.enableRedistributableFirmware = true;
-  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
-}

modules/nixos/filesystem/poup-16t-disk.nix

@@ -1,121 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-let
-  cfg = config.gortium.poup16t;
-  luksName = cfg.luksName;
-in
-with lib;
-
-{
-  options.gortium.poup16t = {
-    enable = mkEnableOption "Poup_16T storage disk (btrfs + LUKS + btrbk snapshots)";
-
-    luksUuid = mkOption {
-      type = types.str;
-      description = ''
-        UUID of the LUKS partition on the 16TB disk (WD Red Pro).
-
-        Find this by running as root when the disk is connected:
-          blkid /dev/sdb   # or wherever the disk appears
-          lsblk -o NAME,SIZE,FSTYPE,UUID
-
-        Since btrfs is inside LUKS, the FS UUID is hidden — use the
-        LUKS partition UUID from blkid (it'll show TYPE=\"crypto_LUKS\").
-      '';
-      example = "00000000-0000-0000-0000-000000000000";
-    };
-
-    luksName = mkOption {
-      type = types.str;
-      default = "poup_16t";
-      description = "Name for the LUKS /dev/mapper/ mapping";
-    };
-
-    mountPoint = mkOption {
-      type = types.str;
-      default = "/mnt/Poup_16T";
-      description = "Mount point for the 16TB data disk";
-    };
-
-    btrfsOptions = mkOption {
-      type = types.listOf types.str;
-      default = [ "defaults" "noatime" "compress=zstd:3" "nofail" ];
-      description = "Mount options for the btrfs filesystem. 'nofail' ensures boot succeeds when disk is disconnected.";
-    };
-
-    btrbk = {
-      enable = mkOption {
-        type = types.bool;
-        default = true;
-        description = "Enable btrbk snapshot management on this volume";
-      };
-
-      schedule = mkOption {
-        type = types.str;
-        default = "daily";
-        description = "systemd calendar event for btrbk (e.g. 'daily', 'hourly', '*-*-* 00:00:00')";
-      };
-
-      preserveMin = mkOption {
-        type = types.str;
-        default = "2d";
-        description = "btrbk snapshot_preserve_min — minimum age before pruning";
-      };
-
-      preserve = mkOption {
-        type = types.str;
-        default = "14d 4w 3m";
-        description = "btrbk snapshot_preserve — retention policy (daily, weekly, monthly)";
-      };
-
-      snapshotDir = mkOption {
-        type = types.str;
-        default = ".snapshots";
-        description = "Directory name for snapshots relative to volume root";
-      };
-    };
-  };
-
-  config = mkIf cfg.enable {
-    # Enable btrfs kernel support (no DKMS needed — it's in-tree)
-    boot.supportedFilesystems = [ "btrfs" ];
-
-    # Install btrfs administration tools
-    environment.systemPackages = with pkgs; [
-      btrfs-progs       # mkfs.btrfs, btrfs, fsck, balance, scrub
-      btrbk             # Snapshot management + rotation
-    ];
-
-    # LUKS2 unlock at boot (uses keyfile or prompts if unavailable)
-    # Since the disk may be disconnected, initrd times out gracefully (~30s)
-    boot.initrd.luks.devices.${luksName} = {
-      device = "/dev/disk/by-uuid/${cfg.luksUuid}";
-      preLVM = false;
-      allowDiscards = true;
-    };
-
-    # Mount the unlocked mapper device as btrfs
-    fileSystems.${cfg.mountPoint} = {
-      device = "/dev/mapper/${luksName}";
-      fsType = "btrfs";
-      options = cfg.btrfsOptions;
-    };
-
-    # btrbk — automated snapshot creation and rotation
-    services.btrbk = mkIf cfg.btrbk.enable {
-      instances.poup16t = {
-        onCalendar = cfg.btrbk.schedule;
-        settings = {
-          snapshot_preserve_min = cfg.btrbk.preserveMin;
-          snapshot_preserve = cfg.btrbk.preserve;
-
-          volume.${cfg.mountPoint} = {
-            snapshot_create = "always";
-            snapshot_dir = cfg.btrbk.snapshotDir;
-            subvolume = ".";
-          };
-        };
-      };
-    };
-  };
-}

overlays/reticulum.nix

@@ -1,81 +0,0 @@
-final: prev: let
-  python3 = final.python3;
-  pyPkgs = python3.pkgs;
-in {
-  reticulumStack = python3.pkgs.buildPythonApplication rec {
-    pname = "reticulum";
-    version = "1.2.9";
-    format = "setuptools";
-    src = pyPkgs.fetchPypi {
-      pname = "rns";
-      inherit version;
-      sha256 = "554814231c237b9caacf8df669312e57dd7d3f84b6d4810125087d1a79a75d75";
-    };
-    propagatedBuildInputs = with pyPkgs; [ cryptography pyserial ];
-    doCheck = false;
-    pythonImportsCheck = [ "RNS" ];
-    meta = with final.lib; {
-      description = "Self-configuring, encrypted and resilient mesh networking stack";
-      homepage = "https://reticulum.network/";
-      license = licenses.mit;
-      platforms = platforms.linux;
-    };
-  };
-
-  lxmf = python3.pkgs.buildPythonApplication rec {
-    pname = "lxmf";
-    version = "0.9.8";
-    format = "setuptools";
-    src = pyPkgs.fetchPypi {
-      inherit pname version;
-      sha256 = "30f39f3a975a049c12ee2cfceb3261d24cb5adec881c6821f7354464b3f3650c";
-    };
-    propagatedBuildInputs = [ final.reticulumStack ];
-    doCheck = false;
-    pythonImportsCheck = [ "LXMF" ];
-    meta = with final.lib; {
-      description = "Lightweight Extensible Message Format for Reticulum";
-      homepage = "https://github.com/markqvist/lxmf";
-      license = licenses.mit;
-      platforms = platforms.linux;
-    };
-  };
-
-  nomadnet = python3.pkgs.buildPythonApplication rec {
-    pname = "nomadnet";
-    version = "1.1.1";
-    format = "setuptools";
-    src = pyPkgs.fetchPypi {
-      inherit pname version;
-      sha256 = "fa13b64a10e75b705a58024815ab72451700aa726af96d415ba99dec28dfc40a";
-    };
-    propagatedBuildInputs = with pyPkgs; [ final.reticulumStack final.lxmf urwid qrcode ];
-    doCheck = false;
-    pythonImportsCheck = [ "nomadnet" ];
-    meta = with final.lib; {
-      description = "Nomad Network — resilient mesh communications platform";
-      homepage = "https://github.com/markqvist/NomadNet";
-      license = licenses.mit;
-      platforms = platforms.linux;
-    };
-  };
-
-  rnsh = python3.pkgs.buildPythonApplication rec {
-    pname = "rnsh";
-    version = "0.1.7";
-    format = "setuptools";
-    src = pyPkgs.fetchPypi {
-      inherit pname version;
-      sha256 = "9cb72f25abb1c6d300f8014b264184ff78f592fe88e36094938012990b797c93";
-    };
-    propagatedBuildInputs = [ final.reticulumStack ];
-    doCheck = false;
-    pythonImportsCheck = [ "rnsh" ];
-    meta = with final.lib; {
-      description = "Remote shell over Reticulum";
-      homepage = "https://github.com/acehoss/rnsh";
-      license = licenses.mit;
-      platforms = platforms.linux;
-    };
-  };
-}

users/ai-worker.nix

@@ -4,7 +4,7 @@
     group = "ai-worker";
     home = "/home/ai-worker";
     createHome = true;
-    extraGroups = [ "docker" ];
+    extraGroups = [ "docker" "libvirtd" ];
     shell = pkgs.bashInteractive;
     openssh.authorizedKeys.keys = [
       keys.users.ai-worker.main