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)

assets/ollama/Dockerfile

@@ -0,0 +1,106 @@
+# ollama-gfx906/Dockerfile
+#
+# Custom ollama image with ROCm 6.1 + gfx906 (MI50) support.
+# The official ollama/rocm image ships ROCm 7.2 which dropped gfx906.
+# This uses v0.23.2's native CMake build system with AMDGPU_TARGETS including gfx906.
+#
+# Build: docker build -t ollama/ollama:rocm-gfx906 ai/ollama
+
+FROM rocm/dev-ubuntu-22.04:6.1.2-complete AS builder
+
+# Build dependencies (CMake, Ninja, Go)
+ARG CMAKEVERSION=3.31.2
+ARG NINJAVERSION=1.12.1
+ARG GOLANG_VERSION=1.22.0
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
+    curl git ccache build-essential pkg-config unzip \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install CMake from official binaries
+RUN curl -fsSL https://github.com/Kitware/CMake/releases/download/v${CMAKEVERSION}/cmake-${CMAKEVERSION}-linux-x86_64.tar.gz \
+    | tar xz -C /usr/local --strip-components 1
+
+# Install Ninja
+RUN curl -fsSL -o /tmp/ninja.zip \
+    https://github.com/ninja-build/ninja/releases/download/v${NINJAVERSION}/ninja-linux.zip \
+    && unzip /tmp/ninja.zip -d /usr/local/bin && rm /tmp/ninja.zip
+
+# Install Go
+RUN curl -fsSL https://go.dev/dl/go${GOLANG_VERSION}.linux-amd64.tar.gz \
+    | tar xz -C /usr/local
+ENV PATH=/usr/local/go/bin:$PATH
+
+ARG OLLAMA_VERSION=v0.23.2
+RUN git clone --depth 1 --branch ${OLLAMA_VERSION} https://github.com/ollama/ollama.git /build
+WORKDIR /build
+
+# ROCm paths
+ENV HIP_PATH=/opt/rocm
+ENV ROCM_PATH=/opt/rocm
+ENV CMAKE_GENERATOR=Ninja
+ENV LDFLAGS=-s
+
+# Step 1: Build CPU backends with GCC (no ROCm preset)
+# Pre-set CMAKE_HIP_COMPILER="" to prevent check_language(HIP) from
+# finding a HIP compiler (it searches /opt/rocm even without PATH).
+# Remove /opt/rocm from PATH to prevent find_program from finding hipcc.
+RUN mkdir -p build-cpu && \
+    PATH=/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin \
+    cmake -B build-cpu -DCMAKE_BUILD_TYPE=Release \
+      -DCMAKE_HIP_COMPILER="" \
+      -DCMAKE_INSTALL_PREFIX=/build/dist && \
+    cmake --build build-cpu --target ggml-cpu -- -l $(nproc) && \
+    cmake --install build-cpu --component CPU --strip && \
+    echo "=== CPU install ===" && \
+    (find /build/dist/lib/ollama -type f -o -type l 2>&1 | head -20 || echo "empty")
+
+# Step 2: Build HIP backend with ROCm preset + gfx906 target only
+# The ROCm 6 preset enables HIP language detection (enable_language(HIP))
+# which ensures GPU kernels are properly compiled for gfx906.
+# OLLAMA_RUNNER_DIR=rocm from the preset, so HIP goes to lib/ollama/rocm/
+# Need CMAKE_PREFIX_PATH so find_package(hip) finds hip-config.cmake
+# at /opt/rocm/lib/cmake/hip/hip-config.cmake.
+RUN mkdir -p build-hip && \
+    cmake -B build-hip \
+      --preset 'ROCm 6' \
+      -DAMDGPU_TARGETS="gfx906:xnack-" \
+      -DCMAKE_BUILD_TYPE=Release \
+      -DCMAKE_PREFIX_PATH="/opt/rocm" && \
+    cmake --build build-hip --target ggml-hip -- -l $(nproc) && \
+    cmake --install build-hip --component HIP --strip && \
+    echo "=== HIP install ===" && \
+    find /build/dist/lib/ollama -type f -o -type l | head -20
+
+# Step 3: Build Go binary (GCC for CGo linking)
+ENV CGO_ENABLED=1
+RUN go build -trimpath -ldflags="-X=github.com/ollama/ollama/version.Version=${OLLAMA_VERSION}" -o /build/dist/ollama .
+
+# ---------- Runtime image ----------
+FROM ubuntu:24.04
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
+    ca-certificates curl libstdc++6 libgomp1 libvulkan1 libopenblas0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy ROCm 6.1 runtime libraries
+# These are needed at runtime by ggml-hip via LD_LIBRARY_PATH
+COPY --from=builder /opt/rocm/lib/ /opt/rocm/lib/
+COPY --from=builder /opt/rocm/share/ /opt/rocm/share/
+
+# Copy ollama binary + all backends (CPU + HIP)
+# CPU install:  /build/dist/lib/ollama/libggml-*.so
+# HIP install:  /build/dist/lib/ollama/rocm/libggml-hip.so
+COPY --from=builder /build/dist/ollama /usr/bin/ollama
+COPY --from=builder /build/dist/lib/ollama/ /usr/lib/ollama/
+
+RUN ldconfig
+
+ENV LD_LIBRARY_PATH=/opt/rocm/lib:/usr/lib/ollama/rocm:/usr/lib/ollama
+ENV HSA_OVERRIDE_GFX_VERSION=9.0.6
+ENV HCC_AMDGPU_TARGET=gfx906
+ENV HSA_ENABLE_SDMA=0
+
+EXPOSE 11434
+ENTRYPOINT ["/bin/ollama"]
+CMD ["serve"]

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;
@@ -61,6 +75,7 @@
               ./modules/nixos/services/open_code_server.nix
               ./modules/nixos/services/ollama_init_custom_models.nix
               ./modules/nixos/services/openclaw_node.nix
+              ./modules/nixos/security/ai-worker-restricted.nix
               ./users/gortium.nix
               ./users/ai-worker.nix
             ];
@@ -79,6 +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 = {
@@ -207,6 +211,7 @@
     ai = {
       path = self + "/assets/compose/ai";
       envFile = config.age.secrets.containers_env.path;
+      ports = [ 22000 ];  # Syncthing TCP sync
     };
 
     cloudstorage = {
@@ -474,7 +479,7 @@
   services.openssh.settings = {
     PermitRootLogin = "no";
     MaxAuthTries = 3;
-    MaxSessions = 10;
+    MaxSessions = 20;
     LoginGraceTime = 30;
     ClientAliveInterval = 300;
     ClientAliveCountMax = 2;

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

@@ -0,0 +1,105 @@
+# AI Worker Restricted Access
+
+This module provides SSH access for the AI worker (hermes-agent) to run ollama benchmarks on the host.
+
+## Security Model
+
+The `ai-worker` user has:
+
+### Filesystem Access
+- **Home directory**: `/home/ai-worker` (standard user home)
+- **No bind mounts**: Cannot access `/home/gortium/infra` or other host files
+- **Cannot access**: Any files outside standard system paths
+
+### Sudo Access
+- **NONE**: ai-worker has no sudo privileges
+- Cannot run `nh`, `nixos-rebuild`, `nixpkgs-fmt`, or `nix` with elevated permissions
+
+### 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
+
+## 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
+
+# On host, run ollama benchmarks via docker
+docker exec ollama ollama pull devstral-small-2:24b
+
+# Create test modelfile
+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'
+
+# Create and test model
+docker exec ollama ollama create test-model -f /root/.ollama/test.modelfile
+docker exec ollama ollama run test-model "Write a Python async function"
+
+# Check VRAM usage
+docker exec --privileged ollama rocm-smi --showmeminfo vram
+
+# Cleanup
+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
+
+Connect as:
+```bash
+ssh ai-worker@lazyworkhorse
+```
+
+The working directory will be `/home/ai-worker`. No infra repo access.
+
+## Verification
+
+Check ai-worker permissions:
+```bash
+# On the host, as root or gortium:
+sudo -u ai-worker sudo -l
+# Should show: no sudo access
+
+# Check docker group membership
+groups ai-worker
+# Should show: ai-worker docker
+```
+
+## Troubleshooting
+
+If ai-worker cannot run docker commands:
+```bash
+# Check docker group membership
+groups ai-worker
+
+# Verify ollama container is running
+docker ps | grep ollama
+
+# Test docker access
+sudo -u ai-worker docker exec ollama ollama list
+```
+
+If SSH connection fails:
+```bash
+# Check SSH key is authorized
+cat /home/ai-worker/.ssh/authorized_keys
+
+# Check SSH service
+systemctl status sshd
+```

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

@@ -0,0 +1,17 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+{
+  options.services.aiWorkerAccess = mkOption {
+    type = types.bool;
+    default = false;
+    description = "Enable AI worker SSH access with docker group membership for ollama benchmarking";
+  };
+
+  config = mkIf config.services.aiWorkerAccess {
+    # ai-worker is member of docker group - can run docker commands via SSH
+    # No bind mounts, no sudo access - docker-only for ollama benchmarking
+    users.groups.docker.members = [ "ai-worker" ];
+  };
+}

modules/nixos/services/ollama_init_custom_models.nix

@@ -1,49 +1,70 @@
 { pkgs, ... }: {
   systemd.services.init-ollama-model = {
     description = "Initialize LLM models with extra context in Ollama Docker";
-    after = [ "docker-ollama.service" ];
+    
+    # On s'assure que Docker tourne avant de lancer ce script
+    after = [ "docker.service" ];
     wantedBy = [ "multi-user.target" ];
+    
     script = ''
-      # Wait for Ollama
-      while ! ${pkgs.curl}/bin/curl -s http://localhost:11434/api/tags > /dev/null; do
-        sleep 2
+      # Fonction de création asynchrone pour ne pas bloquer le démarrage
+      (
+        echo "Starting asynchronous Ollama initialization..."
+        
+        # Attente d'Ollama (maximum 120 secondes pour éviter une boucle infinie)
+        TIMEOUT=60
+        COUNT=0
+        while ! ${pkgs.curl}/bin/curl -s -f http://127.0.0.1:11434/api/tags > /dev/null; do
+          if [ $COUNT -ge $TIMEOUT ]; then
+            echo "Ollama did not become ready in time. Exiting."
+            exit 1
+          fi
+          echo "Waiting for Ollama API to be reachable..."
+          sleep 5
+          COUNT=$((COUNT + 5))
         done
 
         create_model_if_missing() {
           local model_name=$1
           local base_model=$2
-        if ! ${pkgs.docker}/bin/docker exec ollama ollama list | grep -q "$model_name"; then
+          
+          # Vérification robuste via l'API HTTP d'Ollama plutôt que docker exec (évite les conflits de tty)
+          if ! ${pkgs.curl}/bin/curl -s http://127.0.0.1:11434/api/tags | ${pkgs.jq}/bin/jq -e ".models[] | select(.name == \"$model_name\")" > /dev/null; then
             echo "$model_name not found, creating from $base_model..."
             
-          # We use a custom TEMPLATE block to strip the 'currentDate' function 
-          # which is unsupported in Ollama 0.5.7 but present in Devstral's default manifest.
-          ${pkgs.docker}/bin/docker exec ollama sh -c "cat <<EOF > /root/.ollama/$model_name.modelfile
+            # Utilisation d'un fichier temporaire sur l'hôte pour l'injecter proprement dans Docker
+            TMP_FILE=$(mktemp)
+            cat <<EOF > "$TMP_FILE"
 FROM $base_model
-TEMPLATE \"\"\"{{- if .System }}
+TEMPLATE """{{- if .System }}
 [SYSTEM_PROMPT]
 {{ .System }}
 [/SYSTEM_PROMPT]
 {{- end }}
 {{- range .Messages }}
-{{- if eq .Role \"user\" }}
+{{- if eq .Role "user" }}
 [INST]
 {{ .Content }}
 [/INST]
-{{- else if eq .Role \"assistant\" }}
+{{- else if eq .Role "assistant" }}
 {{ .Content }}
 {{- end }}
-{{- end }}\"\"\"
+{{- end }}"""
 PARAMETER num_ctx 131072
 PARAMETER num_predict 4096
 PARAMETER num_keep 1024
 PARAMETER repeat_penalty 1.1
 PARAMETER top_k 40
-PARAMETER stop \"[INST]\"
-PARAMETER stop \"[/INST]\"
-PARAMETER stop \"</s>\"
-EOF"
-          ${pkgs.docker}/bin/docker exec ollama ollama create "$model_name" -f "/root/.ollama/$model_name.modelfile"
-          ${pkgs.docker}/bin/docker exec ollama rm "/root/.ollama/$model_name.modelfile"
+PARAMETER stop "[INST]"
+PARAMETER stop "[/INST]"
+PARAMETER stop "</s>"
+EOF
+
+            # Copie et création dans le conteneur
+            ${pkgs.docker}/bin/docker cp "$TMP_FILE" ollama:/tmp/model.modelfile
+            ${pkgs.docker}/bin/docker exec ollama ollama create "$model_name" -f /tmp/model.modelfile
+            ${pkgs.docker}/bin/docker exec ollama rm /tmp/model.modelfile
+            rm -f "$TMP_FILE"
           else
             echo "$model_name already exists, skipping."
           fi
@@ -55,13 +76,12 @@ EOF"
         # Create Devstral
         create_model_if_missing "devstral-small-2:24b-128k" "devstral-small-2:24b" 
         
-      # create_model_if_missing "qwen2.5-coder:32b-128k" "qwen2.5-coder:32b"
-      
-      # create_model_if_missing "mistral-large-planner:123b" "mistral-large:123b-instruct-v2407-q4_K_S"
+      ) &
     '';
+
     serviceConfig = {
-      Type = "oneshot";
-      RemainAfterExit = true;
+      Type = "forking"; # Permet à systemd de savoir que le script passe en arrière-plan via '&'
+      User = "root";
     };
   };
 }

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;
+  }

secrets/wireguard_preshared_key.age

@@ -0,0 +1,9 @@
+-----BEGIN AGE ENCRYPTED FILE-----
+YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IHNzaC1lZDI1NTE5IEdoTUQ4QSA3VG9Z
+MVFPVFc2VVJ3d0h0dmtBUnI3WHl2SzUxTkRZbjFCaGloWmV3dnd3ClcxdnVPeGd6
+SU4zR0Q0K1dtVjRRVHd0VW5XSFI0dVFpTjZnYk1DNjRxTVEKLT4gQzlgRy1ncmVh
+c2UKeUozOWgyUytSTVF0NjY2STBEb2VadwotLS0gblI3bmJCUWxxU3QrYTEyVFBI
+Snc4NC9rTkh0NnZYbUtxUE9hRWRkelpmMAq58fmH6cK13GeD7wGLxKmx10hmJeW4
+b7KqnCD1ZP7uG85s32xzVRwRG8RrG4xZo5nR9Mrtg1CoTSFfUGeFnf5xveN+Ej0X
+wDVB1LwC+Q==
+-----END AGE ENCRYPTED FILE-----

secrets/wireguard_private_key.age

@@ -0,0 +1,11 @@
+-----BEGIN AGE ENCRYPTED FILE-----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+-----END AGE ENCRYPTED FILE-----

users/ai-worker.nix

@@ -9,9 +9,21 @@
     openssh.authorizedKeys.keys = [
       keys.users.ai-worker.main
     ];
+    # No password login - SSH key only
+    hashedPassword = "!";
   };
   users.groups.ai-worker = {};
 
+  # Enable restricted AI worker SSH access for ollama benchmarking
+  # SECURITY: ai-worker can only:
+  #   - SSH into host from Hermes container
+  #   - Run docker commands (docker exec ollama ...) via docker group
+  #   - Run specific security audit commands
+  #   - NO access to infra repo (no bind mount)
+  #   - NO sudo access (no nh, nixos-rebuild, nixpkgs-fmt, nix)
+  # 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 - security checks only
   security.sudo.extraRules = [
     {