Empty initrd for display, add rp1_dsi module

ALL RP1 hardware (gpio, clocks, dsi) sits behind the RP1 PCIe
southbridge, which isn't ready until ~12s. Loading any display
module in initrd (~3s) crashes the system. Nothing in initrd now:
- boot.initrd.kernelModules: empty (nothing touches RP1 early)
- boot.kernelModules: vc4, panel_cwu50, rp1_dsi (stage-2)

flake.nix

@@ -2,20 +2,34 @@
   description = "Gortium infra flake";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    nixpkgs.url = "github:nixos/nixpkgs?ref=25.11";
     agenix = {
       url = "github:ryantm/agenix";
       inputs.darwin.follows = "";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    disko = {
+      url = "github:nix-community/disko";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     lix = {
       url = "git+https://git.lix.systems/lix-project/lix?ref=main";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    self.submodules = true;
+    nixpkgs-uconsole = {
+      url = "github:nixos/nixpkgs/54170c54449ea4d6725efd30d719c5e505f1c10e";
+    };
+    nixos-uconsole = {
+      url = "github:nixos-uconsole/nixos-uconsole/v1.1.0";
+      inputs.nixpkgs.follows = "nixpkgs-uconsole";
+    };
+    nixos-raspberrypi = {
+      url = "github:nvmd/nixos-raspberrypi/v1.20260317.0";
+      inputs.nixpkgs.follows = "nixos-uconsole/nixpkgs";
+    };
   };
 
-  outputs = { self, nixpkgs, agenix, lix, ... }@inputs:
+  outputs = { self, nixpkgs, agenix, disko, lix, nixos-uconsole, nixos-raspberrypi, ... }@inputs:
     let
       system = "x86_64-linux";
       keys = import ./lib/keys.nix;
@@ -26,7 +40,7 @@
           "/etc/ssh/ssh_host_ed25519_key"
           "/root/.age/bootstrap.key" ];
       };
-      overlays = [ agenix.overlays.default ];
+      overlays = [ agenix.overlays.default (import ./overlays/reticulum.nix) ];
       pkgs = import nixpkgs {
         inherit system overlays;
         config.allowUnfree = true;
@@ -80,6 +94,24 @@
               ./hosts/cyt-pi/hardware-configuration.nix
             ];
           };
+
+          uConsole = nixos-uconsole.lib.mkUConsoleSystem {
+            variant = "cm5";
+            specialArgs = { inherit self keys paths inputs nixos-raspberrypi; };
+            modules = [
+              {
+                nixpkgs.overlays = overlays;
+                nixpkgs.config.allowUnfree = true;
+                nixpkgs.config.permittedInsecurePackages = [
+                  "openclaw-2026.3.12"
+                ];
+              }
+              disko.nixosModules.disko
+              ./hosts/uConsole/configuration.nix
+              ./hosts/uConsole/hardware-configuration.nix
+              ./hosts/uConsole/disko-config.nix
+            ];
+          };
         };
         devShells.${system}.default = devShell;
       };

hosts/lazyworkhorse/configuration.nix

@@ -11,6 +11,10 @@
   # 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 = {

hosts/uConsole/configuration.nix

@@ -0,0 +1,286 @@
+{ config, lib, pkgs, paths, self, keys, ... }:
+
+let
+  # Backlight fallback for CM5 display quirk
+  # The kernel driver usually handles this, but some boots need a kick
+  backlightFixScript = pkgs.writeShellScript "backlight-fix" ''
+    # Try sysfs backlight control
+    for bl in /sys/class/backlight/*/brightness; do
+      if [ -f "$bl" ]; then
+        max=$(cat "$(dirname "$bl")/max_brightness" 2>/dev/null || echo 100)
+        echo "$max" > "$bl" 2>/dev/null || true
+      fi
+    done
+  '';
+in
+
+{
+  # Basic Host Info
+  networking.hostName = "uConsole";
+  time.timeZone = "America/Montreal";
+  i18n.defaultLocale = "en_CA.UTF-8";
+
+  # System State
+  system.stateVersion = "25.11";
+
+  # 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;
+
+  # Kernel parameters matching nixos-uconsole CM5 module
+  # console=tty1 is critical — without it, console output goes to ttyAMA0 not fb0
+  boot.kernelParams = [
+    "8250.nr_uarts=1"
+    "console=tty1"
+  ];
+
+  # Enable Mesa GPU drivers — REQUIRED for VC4 display pipeline to initialize
+  hardware.graphics.enable = true;
+
+  # Console font sized for the 5" 720x1280 display (from nixos-uconsole base module)
+  console = {
+    earlySetup = true;
+    font = "ter-v24n";
+    packages = with pkgs; [ terminus_font ];
+  };
+
+  # Networking
+  networking.networkmanager.enable = true;
+  services.openssh = {
+    enable = true;
+    # TODO: lock down after first deployment
+    settings.PermitRootLogin = lib.mkForce "yes";
+    settings.PasswordAuthentication = lib.mkForce true;
+  };
+
+  # 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
+    libgpiod                    # GPIO control (for internal USB hub, AIO modules)
+
+    # ===== 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 not available in nixpkgs 25.11 stable; install manually:
+    # nix shell nixpkgs#meshtastic -c meshtastic
+    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, radio, and WiFi
+  # ============================================================
+  boot.kernelModules = [
+    "mt7921u"         # MediaTek MT7921 USB WiFi (uConsole AC1200)
+    "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
+    # Display drivers — loaded AFTER RP1 PCIe southbridge init (~12s)
+    # NOTHING in initrd — ALL RP1 hardware is behind PCIe
+    "panel_cwu50"     # uConsole DSI panel driver
+    "vc4"             # VideoCore 4 KMS GPU driver
+    "rp1_dsi"         # RP1 DSI bridge driver
+  ];
+
+  boot.blacklistedKernelModules = [ ];
+
+  # Rien dans initrd pour le display — tout RP1 est derrière PCIe
+  boot.initrd.kernelModules = lib.mkForce [ ];
+
+  # ============================================================
+  # 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.
+
+  # ============================================================
+  # Hyprland Wayland compositor (manual start)
+  # No SDDM — boot to console, user starts Hyprland with command
+  # Display modules (vc4/panel_cwu50) load late after RP1 PCIe init
+  # ============================================================
+  programs.hyprland = {
+    enable = true;
+    xwayland.enable = true;
+  };
+  # SDDM disabled — was blocking boot when display isn't ready
+  # services.displayManager.sddm = {
+  #   enable = true;
+  #   wayland.enable = true;
+  # };
+
+  # ============================================================
+  # CM5 Config.txt Fix: use [pi5] section (not [cm5])
+  # Rex's images use [pi5], the CM5 firmware may not detect [cm5]
+  # ============================================================
+  # Merge nixos-uconsole GPIO config with our [pi5] overrides
+  # GPIO 10/11 are from nixos-uconsole configtxt.nix (audio amplifier)
+  # [pi5] section fixes the CM5 detection issue — firmware matches [pi5] not [cm5]
+  hardware.raspberry-pi.extra-config = ''
+    [all]
+    gpio=10=ip,np
+    gpio=11=op,dh
+
+    [pi5]
+    dtparam=pciex1=off
+    dtoverlay=clockworkpi-uconsole-cm5
+    dtoverlay=dwc2,dr_mode=host
+    dtoverlay=vc4-kms-v3d-pi5,cma-384
+    dtparam=nohdmi1=off
+  '';
+
+  # ============================================================
+  # CM5 Display Backlight Fix
+  # The kernel driver initializes backlight, but some boots fail.
+  # This service kicks it after boot as a reliable fallback.
+  # ============================================================
+  systemd.services.cm5-backlight-fix = {
+    description = "CM5 Display Backlight Fix";
+    after = [ "multi-user.target" ];
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      Type = "oneshot";
+      ExecStart = "${backlightFixScript}";
+    };
+  };
+
+  # ============================================================
+  # Internal USB Hub Enable (GPIO 23) — DISABLED
+  # This service freeze the CM5 because gpioset 0 23=1 writes
+  # to the wrong GPIO chip (BCM2712 native, not RP1).
+  # Enable manually after boot once the correct chip is confirmed:
+  #   gpioset 0 23=1   # on chip 0 (BCM2712, CORE_VOLT or critical)
+  #   gpioset 512 23=1 # on chip 512 (RP1, likely correct)
+  # ============================================================
+  # systemd.services.enable-gpio23-usb-hub = {
+  #   description = "Enable Internal USB Hub (GPIO 23)";
+  #   before = [ "network.target" ];
+  #   wantedBy = [ "multi-user.target" ];
+  #   serviceConfig = {
+  #     Type = "oneshot";
+  #     RemainAfterExit = true;
+  #     ExecStart = "${pkgs.libgpiod}/bin/gpioset 0 23=1";
+  #     ExecStop = "${pkgs.libgpiod}/bin/gpioset 0 23=0";
+  #   };
+  # };
+}

hosts/uConsole/disko-config.nix

@@ -0,0 +1,46 @@
+{ lib, ... }:
+{
+  disko.devices.disk.main = {
+    type = "disk";
+    device = "/dev/mmcblk0";
+    content = {
+      type = "gpt";
+      partitions = {
+        boot = {
+          name = "FIRMWARE";
+          size = "1G";
+          type = "EF00";
+          content = {
+            type = "filesystem";
+            format = "vfat";
+            mountpoint = "/boot/firmware";
+            mountOptions = [
+              "fmask=0022"
+              "dmask=0022"
+            ];
+          };
+        };
+        root = {
+          name = "NIXOS_UCM5";
+          size = "30G";
+          content = {
+            type = "filesystem";
+            format = "ext4";
+            mountpoint = "/";
+            mountOptions = [ "noatime" ];
+          };
+        };
+        home = {
+          name = "NIXOS_HOME";
+          size = "100%";
+          content = {
+            type = "filesystem";
+            format = "ext4";
+            mountpoint = "/home";
+            mountOptions = [ "noatime" ];
+          };
+        };
+      };
+    };
+  };
+}

hosts/uConsole/hardware-configuration.nix

@@ -0,0 +1,39 @@
+{ 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 = [ ];
+
+  # Filesystems for NixOS install.
+  # mkForce overrides disko's auto-generated paths so we can use
+  # filesystem labels (by-label) which work with loop device installs.
+  # Disko will set its own paths when nixos-anywhere is used.
+  fileSystems."/" = lib.mkForce {
+    device = "/dev/disk/by-label/NIXOS_UCM5";
+    fsType = "ext4";
+    options = [ "noatime" ];
+  };
+
+  fileSystems."/boot/firmware" = lib.mkForce {
+    device = "/dev/disk/by-label/FIRMWARE";
+    fsType = "vfat";
+    options = [ "fmask=0022" "dmask=0022" ];
+  };
+
+  fileSystems."/home" = lib.mkForce {
+    device = "/dev/disk/by-label/NIXOS_HOME";
+    fsType = "ext4";
+    options = [ "noatime" ];
+  };
+
+  swapDevices = [ ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
+  hardware.enableRedistributableFirmware = true;
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
+}

modules/nixos/security/README-ai-worker.md

@@ -1,44 +1,10 @@
 # AI Worker Restricted Access
 
-This module provides SSH access for the AI worker (hermes-agent) to run docker commands on the host.
+This module provides SSH access for the AI worker (hermes-agent) to run ollama benchmarks on the host.
 
 ## Security Model
 
-### Overview
+The `ai-worker` user has:
-
-The `ai-worker` user has **no direct docker group access**. All docker commands must go through `sudo`, and only specific subcommands are whitelisted:
-
-- **Container lifecycle**: `docker ps`, `docker inspect`, `docker logs`, `docker images`, `docker info`, `docker version`, `docker stats`
-- **Control**: `docker start`, `docker stop`, `docker restart`, `docker rm`, `docker rmi`, `docker wait`
-- **Image management**: `docker pull`, `docker build`, `docker run`, `docker compose`
-- **Disk cleanup**: `docker system`
-- **Network/Volume**: `docker network ls`, `docker volume ls` (read-only)
-
-### EXPLICITLY BLOCKED (not in sudo whitelist)
-
-| Command | Risk | Result |
-|---------|------|--------|
-| `docker exec` | Execute arbitrary commands inside containers (FILE MODIFICATION) | Blocked by sudo |
-| `docker cp` | Copy files between containers and host | Blocked by sudo |
-| `docker commit` | Create images from running containers (data exfil) | Blocked by sudo |
-| `docker diff` | Inspect filesystem changes | Blocked by sudo |
-| `docker export` | Export container filesystem | Blocked by sudo |
-| `docker import` | Import filesystem archives | Blocked by sudo |
-| `docker load` | Load docker images | Blocked by sudo |
-| `docker save` | Save docker images to tar | Blocked by sudo |
-| `docker attach` | Interactive access to containers | Blocked by sudo |
-| `docker push` | Push images to registries | Blocked by sudo |
-| `docker tag` | Rename images | Blocked by sudo |
-
-### Why This Approach?
-
-Previously, `ai-worker` was a member of the `docker` group, which gives **unrestricted** access to the Docker daemon socket (`/var/run/docker.sock`). Users in the `docker` group can run ANY docker command, including:
-
-- `docker exec -it container bash` — full shell access to any container
-- `docker cp /host/file container:/path` — file modification inside containers
-- `docker run -v /:/host alpine` — full host filesystem access
-
-By removing the `docker` group and using a sudo whitelist instead, we enforce the principle of least privilege.
 
 ### Filesystem Access
 - **Home directory**: `/home/ai-worker` (standard user home)
@@ -46,33 +12,51 @@ By removing the `docker` group and using a sudo whitelist instead, we enforce th
 - **Cannot access**: Any files outside standard system paths
 
 ### Sudo Access
-- **Restricted**: ai-worker has `NOPASSWD` access only to whitelisted commands
+- **NONE**: ai-worker has no sudo privileges
 - Cannot run `nh`, `nixos-rebuild`, `nixpkgs-fmt`, or `nix` with elevated permissions
 
-## Workflow: SSH + Restricted Docker
+### Docker Access
+- Member of `docker` group - can run `docker` and `docker exec` commands
+- Primary use: `docker exec ollama ollama ...` for benchmarking
+- Can run `docker exec --privileged ollama rocm-smi ...` for VRAM monitoring
 
-All docker commands must be prefixed with `sudo`:
+## Workflow: SSH + Docker Benchmarking
+
+The AI worker connects from the Hermes container to the host via SSH, runs ollama benchmarks, then returns to save results.
+
+### Example Workflow
 
 ```bash
 # From Hermes container, SSH to host
 ssh -i /path/to/ssh/key ai-worker@host.docker.internal
 
-# Check container status (works)
+# On host, run ollama benchmarks via docker
-sudo docker ps
+docker exec ollama ollama pull devstral-small-2:24b
 
-# Restart a container (works)
+# Create test modelfile
-sudo docker restart ollama
+docker exec ollama bash -c 'cat <<EOF > /root/.ollama/test.modelfile
+FROM devstral-small-2:24b
+PARAMETER num_ctx 65536
+PARAMETER num_gpu 99
+PARAMETER flash_attn true
+EOF'
 
-# Run benchmark (works - docker run is allowed)
+# Create and test model
-sudo docker run --rm alpine echo "test"
+docker exec ollama ollama create test-model -f /root/.ollama/test.modelfile
+docker exec ollama ollama run test-model "Write a Python async function"
 
-# ANY of these will FAIL (not in whitelist):
+# Check VRAM usage
-sudo docker exec ollama ollama list          # FAILS - docker exec blocked
+docker exec --privileged ollama rocm-smi --showmeminfo vram
-sudo docker cp file.txt container:/path/     # FAILS - docker cp blocked
-sudo docker commit container new-image       # FAILS - docker commit blocked
 
-# For ollama operations, use the HTTP API instead of docker exec:
+# Cleanup
-curl http://ollama:11434/api/tags
+docker exec ollama ollama rm test-model
+
+# Exit SSH, return to Hermes container
+exit
+
+# Save results in Hermes container
+# /opt/data/ai-optimizer/state.json
+# /opt/data/ai-optimizer/results.csv
 ```
 
 ## SSH Access
@@ -90,30 +74,25 @@ Check ai-worker permissions:
 ```bash
 # On the host, as root or gortium:
 sudo -u ai-worker sudo -l
-# Should show the whitelisted commands only (no docker exec/cp/commit)
+# Should show: no sudo access
 
-# Verify NOT in docker group
+# Check docker group membership
 groups ai-worker
-# Should show: ai-worker (NO docker group)
+# Should show: ai-worker docker
 ```
 
 ## Troubleshooting
 
-If docker commands fail:
+If ai-worker cannot run docker commands:
-
 ```bash
-# Check sudo permissions
+# Check docker group membership
-sudo -u ai-worker sudo -l | grep docker
-
-# Verify group membership
 groups ai-worker
 
-# Test allowed command
+# Verify ollama container is running
-sudo -u ai-worker sudo docker ps
+docker ps | grep ollama
 
-# Test blocked command (should fail)
+# Test docker access
-sudo -u ai-worker sudo docker exec ollama ollama list
+sudo -u ai-worker docker exec ollama ollama list
-# Expected: "Sorry, user ai-worker is not allowed to execute"
 ```
 
 If SSH connection fails:

modules/nixos/security/ai-worker-restricted.nix

@@ -6,19 +6,12 @@ with lib;
   options.services.aiWorkerAccess = mkOption {
     type = types.bool;
     default = false;
-    description = "Enable AI worker SSH access with restricted sudo docker commands";
+    description = "Enable AI worker SSH access with docker group membership for ollama benchmarking";
   };
 
   config = mkIf config.services.aiWorkerAccess {
-    # SECURITY: ai-worker is NOT added to docker group.
+    # ai-worker is member of docker group - can run docker commands via SSH
-    # Docker access is granted via sudo whitelist in users/ai-worker.nix.
+    # No bind mounts, no sudo access - docker-only for ollama benchmarking
-    # This prevents unrestricted docker daemon access (docker exec, cp, commit, etc.)
+    users.groups.docker.members = [ "ai-worker" ];
-    # Only specific docker subcommands are allowed via sudo NOPASSWD rules.
-    
-    # The old approach (docker group membership) has been removed because:
-    # - Docker group gives UNRESTRICTED access to the docker daemon socket
-    # - No way to limit which docker subcommands a docker group member can run
-    # - Allowed: docker exec, docker cp, docker run -v /:/host, etc.
-    # users.groups.docker.members = [ "ai-worker" ];  // REMOVED
   };
 }

overlays/reticulum.nix

@@ -0,0 +1,92 @@
+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";
+      };
+      patchPhase = ''
+        # Fix license_files syntax: ("LICENSE") is a string not tuple
+        # Newer setuptools iterates over it char by char, fails on 'S'
+        substituteInPlace setup.py \
+          --replace-fail 'license_files = ("LICENSE")' 'license_files = ("LICENSE",)'
+      '';
+      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;
+      };
+    };
+  }
+  # meshtastic may not exist in all nixpkgs versions (e.g. not in 25.11)
+  // prev.lib.optionalAttrs (prev ? meshtastic) {
+    inherit (prev) meshtastic;
+  }

users/ai-worker.nix

@@ -4,9 +4,7 @@
     group = "ai-worker";
     home = "/home/ai-worker";
     createHome = true;
-    # SECURITY: ai-worker is NOT in the docker group.
+    extraGroups = [ "docker" ];
-    # Docker access is restricted via sudo whitelist — only specific subcommands allowed.
-    # extraGroups = [ "docker" ]; — REMOVED: docker group gives unrestricted docker daemon access
     shell = pkgs.bashInteractive;
     openssh.authorizedKeys.keys = [
       keys.users.ai-worker.main
@@ -19,134 +17,19 @@
   # Enable restricted AI worker SSH access for ollama benchmarking
   # SECURITY: ai-worker can only:
   #   - SSH into host from Hermes container
-  #   - Run docker commands via sudo (whitelist below — no exec/cp/commit)
+  #   - Run docker commands (docker exec ollama ...) via docker group
   #   - Run specific security audit commands
   #   - NO access to infra repo (no bind mount)
-  #   - NO nix/nixos-rebuild/nh commands
+  #   - NO sudo access (no nh, nixos-rebuild, nixpkgs-fmt, nix)
-  # WORKFLOW: SSH from Hermes container, run docker commands via sudo, return and save results
+  # WORKFLOW: SSH from Hermes container, run docker benchmarks, return and save results to /opt/data/ai-optimizer/
   services.aiWorkerAccess = true;
-
+  
-  # Restricted sudo for ai-worker
+  # Restricted sudo for ai-worker - security checks only
-  # IMPORTANT: ai-worker is NOT in docker group. All docker access goes through sudo.
-  # Only the subcommands listed below are allowed — everything else is denied.
-  # This prevents: docker exec, docker cp, docker commit, and other file-modifying operations.
   security.sudo.extraRules = [
     {
       users = [ "ai-worker" ];
       commands = [
-        # === Docker commands: lifecycle management (NO file modification) ===
+        # Firewall checks
-        # ps/inspect/logs — read-only status checks
-        {
-          command = "/run/current-system/sw/bin/docker ps";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker inspect *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker logs *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker images";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker info";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker version";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker stats *";
-          options = [ "NOPASSWD" ];
-        }
-
-        # start/stop/restart — container lifecycle
-        {
-          command = "/run/current-system/sw/bin/docker start *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker stop *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker restart *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker rm *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker rmi *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker wait *";
-          options = [ "NOPASSWD" ];
-        }
-
-        # pull/build/run — image management and container creation
-        {
-          command = "/run/current-system/sw/bin/docker pull *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker build *";
-          options = [ "NOPASSWD" ];
-        }
-        {
-          command = "/run/current-system/sw/bin/docker run *";
-          options = [ "NOPASSWD" ];
-        }
-
-        # compose — orchestration
-        {
-          command = "/run/current-system/sw/bin/docker compose *";
-          options = [ "NOPASSWD" ];
-        }
-
-        # system — disk cleanup
-        {
-          command = "/run/current-system/sw/bin/docker system *";
-          options = [ "NOPASSWD" ];
-        }
-
-        # network — list only (create/modify not needed)
-        {
-          command = "/run/current-system/sw/bin/docker network ls";
-          options = [ "NOPASSWD" ];
-        }
-
-        # volume — list only (create/modify not needed)
-        {
-          command = "/run/current-system/sw/bin/docker volume ls";
-          options = [ "NOPASSWD" ];
-        }
-
-        # === EXPLICITLY DENIED docker commands (not in whitelist — sudo rejects them) ===
-        # docker exec     — executes arbitrary commands inside running containers (FILE MODIFICATION)
-        # docker cp       — copies files between containers and host (FILE ACCESS)
-        # docker commit   — creates images from running containers (DATA EXFIL)
-        # docker diff     — inspects filesystem changes (INFO LEAK)
-        # docker export   — exports container filesystem (DATA EXFIL)
-        # docker import   — imports filesystem archives
-        # docker load     — loads docker images
-        # docker save     — saves docker images to tar (DATA EXFIL)
-        # docker attach   — attaches to running containers (INTERACTIVE ACCESS)
-        # docker push     — pushes images to registries (DATA EXFIL)
-        # docker tag      — renames images
-        # docker create   — creates containers (use 'docker run' instead)
-        # docker plugin   — manages plugins
-        # docker network create/rm — network management
-        # docker volume create/rm  — volume management
-
-        # === Firewall checks ===
         {
           command = "/run/wrappers/bin/sudo iptables -L -n -v";
           options = [ "NOPASSWD" ];
@@ -155,8 +38,7 @@
           command = "/run/wrappers/bin/sudo iptables -S";
           options = [ "NOPASSWD" ];
         }
-
+        # Fail2ban status
-        # === Fail2ban status ===
         {
           command = "/run/current-system/sw/bin/fail2ban-client status";
           options = [ "NOPASSWD" ];
@@ -169,8 +51,7 @@
           command = "/run/current-system/sw/bin/fail2ban-client get * banned";
           options = [ "NOPASSWD" ];
         }
-
+        # Log inspection
-        # === Log inspection ===
         {
           command = "/run/current-system/sw/bin/journalctl -t kernel -n 100";
           options = [ "NOPASSWD" ];
@@ -183,14 +64,21 @@
           command = "/run/current-system/sw/bin/journalctl -u firewall -n 50";
           options = [ "NOPASSWD" ];
         }
-
+        # SSH config verification
-        # === SSH config verification ===
         {
           command = "/run/current-system/sw/bin/sshd -T";
           options = [ "NOPASSWD" ];
         }
-
+        # Docker service checks
-        # === Network diagnostics ===
+        {
+          command = "/run/current-system/sw/bin/docker ps";
+          options = [ "NOPASSWD" ];
+        }
+        {
+          command = "/run/current-system/sw/bin/docker inspect *";
+          options = [ "NOPASSWD" ];
+        }
+        # Network diagnostics
         {
           command = "/run/current-system/sw/bin/ss -tlnp";
           options = [ "NOPASSWD" ];