feat: integrate rollback sentinel as NixOS module

Add rollback-sentinel NixOS module that: - Deploys sentinel-check.sh (inline) and nixos-rollback.sh (from file) as system packages - Runs a boot-time systemd oneshot service after multi-user.target with configurable delay — checks Tier-1 services, triggers rollback on failure - Runs a post-rebuild service via activation script after every nixos-rebuild switch - Exposes options for tier1Services, tier2Services, tier3InfoServices, bootDelay, rollbackMode (set-default/rollback-now/dry-run), and enablePostRebuild Module wired into flake.nix for lazyworkhorse and enabled in configuration.nix with standard Tier-1/2 service lists and 120s delay.
fix: update compose submodule - honcho embedding config fix + deriver in CMD
2026-05-25 00:08:39 -04:00 · 2026-05-23 18:54:54 -04:00 · 2026-05-23 16:51:24 -04:00 · 2026-05-23 16:43:22 -04:00 · 2026-05-23 08:34:46 -04:00 · 2026-05-23 01:21:31 -04:00
26 changed files with 1062 additions and 997 deletions
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,7 +1,3 @@
 [submodule "assets/compose"]
 	path = assets/compose
 	url = ssh://git@code.lazyworkhorse.net:2222/gortium/compose.git
-[submodule "assets/dotfiles"]
-	path = assets/dotfiles
-	url = ssh://git@code.lazyworkhorse.net:2222/gortium/dotfiles.git
-	branch = master
--- a/assets/compose
+++ b/assets/compose
--- a/assets/dotfiles
+++ b/assets/dotfiles
--- a/assets/ollama/Dockerfile
+++ b/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"]
--- a/flake.lock
+++ b/flake.lock
@@ -23,22 +23,6 @@
        "type": "github"
      }
    },
-    "argononed": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1729566243,
-        "narHash": "sha256-DPNI0Dpk5aym3Baf5UbEe5GENDrSmmXVdriRSWE+rgk=",
-        "owner": "nvmd",
-        "repo": "argononed",
-        "rev": "16dbee54d49b66d5654d228d1061246b440ef7cf",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nvmd",
-        "repo": "argononed",
-        "type": "github"
-      }
-    },
    "flake-compat": {
      "flake": false,
      "locked": {
@@ -53,21 +37,6 @@
        "url": "https://git.lix.systems/lix-project/flake-compat/archive/main.tar.gz"
      }
    },
-    "flake-compat_2": {
-      "locked": {
-        "lastModified": 1767039857,
-        "narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
-        "type": "github"
-      },
-      "original": {
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "type": "github"
-      }
-    },
    "home-manager": {
      "inputs": {
        "nixpkgs": [
@@ -89,27 +58,6 @@
        "type": "github"
      }
    },
-    "home-manager_2": {
-      "inputs": {
-        "nixpkgs": [
-          "nixpkgs-uconsole"
-        ]
-      },
-      "locked": {
-        "lastModified": 1779506708,
-        "narHash": "sha256-QOD/CNm196nCJRheux/URi4/HE66fthdOMqCJoPP1Y0=",
-        "owner": "nix-community",
-        "repo": "home-manager",
-        "rev": "3ee51fbdac8c8bdfe1e7e1fcaba6520a563f394f",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "ref": "release-25.11",
-        "repo": "home-manager",
-        "type": "github"
-      }
-    },
    "lix": {
      "inputs": {
        "flake-compat": "flake-compat",
@@ -196,80 +144,6 @@
        "type": "github"
      }
    },
-    "nixos-images": {
-      "inputs": {
-        "nixos-stable": [
-          "nixos-raspberrypi",
-          "nixpkgs"
-        ],
-        "nixos-unstable": [
-          "nixos-raspberrypi",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1747747741,
-        "narHash": "sha256-LUOH27unNWbGTvZFitHonraNx0JF/55h30r9WxqrznM=",
-        "owner": "nvmd",
-        "repo": "nixos-images",
-        "rev": "cbbd6db325775096680b65e2a32fb6187c09bbb4",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nvmd",
-        "ref": "sdimage-installer",
-        "repo": "nixos-images",
-        "type": "github"
-      }
-    },
-    "nixos-raspberrypi": {
-      "inputs": {
-        "argononed": "argononed",
-        "flake-compat": "flake-compat_2",
-        "nixos-images": "nixos-images",
-        "nixpkgs": [
-          "nixpkgs-uconsole"
-        ]
-      },
-      "locked": {
-        "lastModified": 1781324200,
-        "narHash": "sha256-JWqxN2Yle86+4Q+GFh12SvB92ZyLeqalVsN9lfMh6eQ=",
-        "owner": "gortium",
-        "repo": "nixos-raspberrypi",
-        "rev": "721a6e9e67dca3a23133db650b87018646bca3e6",
-        "type": "github"
-      },
-      "original": {
-        "owner": "gortium",
-        "ref": "cm5-cross-v1",
-        "repo": "nixos-raspberrypi",
-        "type": "github"
-      }
-    },
-    "nixos-uconsole": {
-      "inputs": {
-        "nixos-raspberrypi": [
-          "nixos-raspberrypi"
-        ],
-        "nixpkgs": [
-          "nixpkgs-uconsole"
-        ]
-      },
-      "locked": {
-        "lastModified": 1781476310,
-        "narHash": "sha256-jY6ujqLXNAWJGvt+pAuw1Wg/OiHRGd1B1Z7Czhiq7Q4=",
-        "owner": "gortium",
-        "repo": "nixos-uconsole",
-        "rev": "38a7fcbffbf2d2e122bc1e1c634fe25f66ecda13",
-        "type": "github"
-      },
-      "original": {
-        "owner": "gortium",
-        "ref": "pr/dcs-panel-detection",
-        "repo": "nixos-uconsole",
-        "type": "github"
-      }
-    },
    "nixpkgs": {
      "locked": {
        "lastModified": 1705033721,
@@ -302,22 +176,6 @@
        "type": "github"
      }
    },
-    "nixpkgs-uconsole": {
-      "locked": {
-        "lastModified": 1780952837,
-        "narHash": "sha256-Fwd1+spDtQ0hDyBwme6ufG3n4mY0UrjjFdYHv+G/Hds=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "e820eb4a444b46a19b2e03e8dfd2359439ff30fe",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-25.11",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
    "nixpkgs_2": {
      "locked": {
        "lastModified": 1774386573,
@@ -353,12 +211,8 @@
    "root": {
      "inputs": {
        "agenix": "agenix",
-        "home-manager": "home-manager_2",
        "lix": "lix",
-        "nixos-raspberrypi": "nixos-raspberrypi",
-        "nixos-uconsole": "nixos-uconsole",
-        "nixpkgs": "nixpkgs_2",
-        "nixpkgs-uconsole": "nixpkgs-uconsole"
+        "nixpkgs": "nixpkgs_2"
      }
    },
    "systems": {
--- a/flake.nix
+++ b/flake.nix
@@ -12,26 +12,18 @@
      url = "git+https://git.lix.systems/lix-project/lix?ref=main";
      inputs.nixpkgs.follows = "nixpkgs";
    };
-    nixpkgs-uconsole.url = "github:NixOS/nixpkgs/nixos-25.11";
    nixos-uconsole = {
-      url = "github:gortium/nixos-uconsole/pr/dcs-panel-detection";
-      inputs.nixpkgs.follows = "nixpkgs-uconsole";
-      inputs.nixos-raspberrypi.follows = "nixos-raspberrypi";
+      url = "github:nixos-uconsole/nixos-uconsole";
+      inputs.nixpkgs.follows = "nixpkgs";
    };
    nixos-raspberrypi = {
-      url = "github:gortium/nixos-raspberrypi/cm5-cross-v1";
-      inputs.nixpkgs.follows = "nixpkgs-uconsole";
-    };
-    home-manager = {
-      url = "github:nix-community/home-manager/release-25.11";
-      inputs.nixpkgs.follows = "nixpkgs-uconsole";
+      url = "github:nvmd/nixos-raspberrypi/v1.20260317.0";
+      inputs.nixpkgs.follows = "nixpkgs";
    };
+    self.submodules = true;
  };

-  outputs = { self, nixpkgs, agenix, lix
-            , nixpkgs-uconsole, nixos-uconsole, nixos-raspberrypi
-            , home-manager
-            , ... }@inputs:
+  outputs = { self, nixpkgs, agenix, lix, nixos-uconsole, nixos-raspberrypi, ... }@inputs:
    let
      system = "x86_64-linux";
      keys = import ./lib/keys.nix;
@@ -42,155 +34,78 @@
          "/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;
-        config.permittedInsecurePackages = [ "openclaw-2026.3.12" ];
+        config.permittedInsecurePackages = [
+          "openclaw-2026.3.12"
+        ];
      };
+
      devShell = import ./shells/nix_dev.nix {
        inherit pkgs system agenix;
      };
-
-      # Cross-compile overlay fixes for Hyprland and deps on aarch64
-      uconsoleCrossOverlay = final: prev: {
-        libcamera = prev.libcamera.overrideAttrs (_: { meta.platforms = []; });
-        libcamera-rpi = prev.libcamera-rpi.overrideAttrs (_: { meta.platforms = []; });
-        libpisp = prev.libpisp.overrideAttrs (_: { meta.platforms = []; });
-        pipewire = prev.pipewire.overrideAttrs (old: {
-          buildInputs = builtins.filter
-            (x: !(x?pname && x.pname == "libcamera"))
-            (old.buildInputs or []);
-          mesonFlags = builtins.filter
-            (flag: !(builtins.isString flag && builtins.match ".*libcamera.*" flag != null))
-            (old.mesonFlags or []) ++ [ "-Dlibcamera=disabled" ];
-        });
-        gjs = prev.gjs.overrideAttrs (old: {
-          mesonFlags = (old.mesonFlags or []) ++ [ "-Dskip_gtk_tests=true" ];
-        });
-        hyprland = prev.hyprland.override { wrapRuntimeDeps = false; };
-        xdg-desktop-portal-hyprland = prev.xdg-desktop-portal-hyprland.overrideAttrs (old: {
-          preConfigure = (old.preConfigure or "") + ''
-            cmakeFlags="$cmakeFlags -Dhyprwayland-scanner_DIR=${prev.buildPackages.hyprwayland-scanner}/lib/cmake/hyprwayland-scanner" 2>/dev/null || true
-            export PKG_CONFIG_PATH="${prev.buildPackages.hyprwayland-scanner}/lib/pkgconfig:$PKG_CONFIG_PATH"
-          '';
-        });
-      };
-
-      # RPI-specific pipewire libcamera fix (separate nixpkgs instance)
-      uconsoleRpiPipewireOverlay = final: prev: {
-        pipewire = prev.pipewire.overrideAttrs (old: {
-          buildInputs = builtins.filter
-            (x: !(x?pname && x.pname == "libcamera"))
-            (old.buildInputs or []);
-          mesonFlags = builtins.filter
-            (flag: !(builtins.isString flag && builtins.match ".*libcamera.*" flag != null))
-            (old.mesonFlags or []) ++ [ "-Dlibcamera=disabled" ];
-        });
-      };
-
-      # Shared uConsole CM5 module set — used by both toplevel and SD image
-      uconsoleBaseModules = [
-        {
-          nixpkgs.buildPlatform = "x86_64-linux";
-          nixpkgs.hostPlatform = "aarch64-linux";
-          nixpkgs.config.allowUnfree = true;
-          boot.loader.raspberry-pi.bootloader = "kernel";
-          nixpkgs.overlays = [ uconsoleCrossOverlay ];
-        }
-        nixos-raspberrypi.nixosModules.nixpkgs-rpi
-        ({ config, lib, pkgs, ... }: {
-          nixpkgs.overlays = [ uconsoleRpiPipewireOverlay ];
-        })
-        nixos-raspberrypi.nixosModules.raspberry-pi-5.base
-        nixos-raspberrypi.lib.inject-overlays
-        nixos-raspberrypi.lib.inject-overlays-global
-        nixos-uconsole.nixosModules.uconsole-cm5
-        ./modules/nixos/hardware/uconsole-cm5-aio-v2.nix
-        # Cross-compiled Lix for uConsole
-        ({ config, lib, pkgs, inputs, ... }: let
-          lixCross = import inputs.nixpkgs-uconsole {
-            localSystem = { system = "x86_64-linux"; };
-            crossSystem = { system = "aarch64-linux"; };
-            overlays = [ inputs.lix.overlays.default ];
+    in
+      {
+        nixosConfigurations = {
+          lazyworkhorse = nixpkgs.lib.nixosSystem {
+            specialArgs = { inherit system self keys paths inputs; };
+            modules = [
+              {
+                nixpkgs.overlays = overlays;
+                nixpkgs.config.allowUnfree = true;
+                nixpkgs.config.rocmSupport = true;
+                nixpkgs.config.permittedInsecurePackages = [
+                  "openclaw-2026.3.12"
+                ];
+                nix.package = lix.packages.${system}.default;
+              }
+              agenix.nixosModules.default
+              ./hosts/lazyworkhorse/configuration.nix
+              ./hosts/lazyworkhorse/hardware-configuration.nix
+              ./modules/nixos/filesystem/hoardingcow-mount.nix
+              ./modules/nixos/services/docker_manager.nix
+              ./modules/nixos/services/open_code_server.nix
+              ./modules/nixos/services/ollama_init_custom_models.nix
+              ./modules/nixos/services/openclaw_node.nix
+              ./modules/nixos/services/rollback-sentinel.nix
+              ./modules/nixos/security/ai-worker-restricted.nix
+              ./users/gortium.nix
+              ./users/ai-worker.nix
+            ];
          };
-        in { nix.package = lixCross.lix; })
-        inputs.home-manager.nixosModules.home-manager
-        agenix.nixosModules.default
-        ./hosts/uconsole-cm5/configuration.nix
-        ./hosts/uconsole-cm5/hardware-configuration.nix
-        ./modules/nixos/services/wireguard-client.nix
-        ./modules/nixos/security/ai-worker-restricted.nix
-        ./users/gortium/gortium.nix
-        ./users/ai-worker/ai-worker.nix
-      ];
-    in {
-      nixosConfigurations = {
-        lazyworkhorse = nixpkgs.lib.nixosSystem {
-          specialArgs = { inherit system self keys paths inputs; };
-          modules = [
-            {
-              nixpkgs.overlays = overlays;
-              nixpkgs.config.allowUnfree = true;
-              nixpkgs.config.rocmSupport = true;
-              nixpkgs.config.permittedInsecurePackages = [ "openclaw-2026.3.12" ];
-              nix.package = lix.packages.${system}.default;
-            }
-        inputs.home-manager.nixosModules.home-manager
-            agenix.nixosModules.default
-            ./hosts/lazyworkhorse/configuration.nix
-            ./hosts/lazyworkhorse/hardware-configuration.nix
-            ./modules/nixos/filesystem/hoardingcow-mount.nix
-            ./modules/nixos/services/docker_manager.nix
-            ./modules/nixos/services/wireguard-client.nix
-            ./modules/nixos/services/ollama_init_custom_models.nix
-            ./modules/nixos/security/ai-worker-restricted.nix
-            ./users/gortium/gortium.nix
-            ./users/ai-worker/ai-worker.nix
-          ];
-        };

-        cyt-pi = nixpkgs.lib.nixosSystem {
-          specialArgs = { inherit self keys paths inputs; };
-          modules = [
-            {
-              nixpkgs.overlays = overlays;
-              nixpkgs.config.allowUnfree = true;
-              nixpkgs.hostPlatform = "aarch64-linux";
-              nix.package = lix.packages."aarch64-linux".default;
-            }
-            ./hosts/cyt-pi/configuration.nix
-            ./hosts/cyt-pi/hardware-configuration.nix
-            ./modules/nixos/services/wireguard-client.nix
-            ./users/gortium/gortium.nix
-          ];
-        };
-
-        uconsole-cm5 = nixpkgs-uconsole.lib.nixosSystem {
-          system = "aarch64-linux";
-          specialArgs = {
-            inherit self keys paths inputs;
-            nixos-raspberrypi = nixos-raspberrypi;
-            isCM4 = false;
+          cyt-pi = nixpkgs.lib.nixosSystem {
+            specialArgs = { inherit self keys paths inputs; };
+            modules = [
+              {
+                nixpkgs.overlays = overlays;
+                nixpkgs.config.allowUnfree = true;
+                nixpkgs.hostPlatform = "aarch64-linux";
+                nix.package = lix.packages."aarch64-linux".default;
+              }
+              ./hosts/cyt-pi/configuration.nix
+              ./hosts/cyt-pi/hardware-configuration.nix
+            ];
          };
-          modules = uconsoleBaseModules;
-        };
-      };

-      devShells.${system}.default = devShell;
-
-      packages.${system} = {
-        uconsole-cm5-image = (nixos-raspberrypi.lib.nixosSystem {
-          system = "aarch64-linux";
-          specialArgs = {
-            inherit self keys inputs;
-            nixos-raspberrypi = nixos-raspberrypi;
-            isCM4 = false;
+          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
+            ];
          };
-          modules = uconsoleBaseModules ++ [
-            nixos-raspberrypi.nixosModules.sd-image
-          ];
-        }).config.system.build.sdImage;
+        };
+        devShells.${system}.default = devShell;
      };
-    };
 }
--- a/hosts/lazyworkhorse/configuration.nix
+++ b/hosts/lazyworkhorse/configuration.nix
@@ -9,7 +9,7 @@
  hoardingcow-mount.enable = true;

  # Flakesss
-  nix.settings.experimental-features = [ "nix-command" "flakes" "flake-self-attrs" "ca-derivations" ];
+  nix.settings.experimental-features = [ "nix-command" "flakes" "flake-self-attrs" ];
  nix.settings.trusted-users = [ "root" "gortium" ];

  # Garbage collection
@@ -49,12 +49,24 @@
  networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.
  networking.hostId = "deadbeef";

-  # WireGuard VPN client -- module, always up, connects to wg-easy server
-  gortium.wireguard-client = {
-    enable = true;
-    vpnIp = "10.8.0.3/24";
-    privateKeyFile = config.age.secrets.wireguard_private_key.path;
-    presharedKeyFile = config.age.secrets.wireguard_preshared_key.path;
+  # WireGuard VPN client -- always up, connects to wg-easy server
+  # Create age-encrypted secrets before deploying (run on the host):
+  #   echo -n "<private_key>" | agenix -e secrets/wireguard_private_key.age
+  #   echo -n "<preshared_key>" | agenix -e secrets/wireguard_preshared_key.age
+  networking.wireguard.interfaces = {
+    wg0 = {
+      ips = [ "10.8.0.3/24" ];
+      privateKeyFile = config.age.secrets.wireguard_private_key.path;
+      peers = [
+        {
+          publicKey = "rY9zII3AOm8rog2rv02PyA3Bq7zdvTOGkZapfCV1DkE=";
+          presharedKeyFile = config.age.secrets.wireguard_preshared_key.path;
+          allowedIPs = [ "10.8.0.0/24" ];
+          endpoint = "vpn.lazyworkhorse.net:51820";
+          persistentKeepalive = 25;
+        }
+      ];
+    };
  };

  # Set your time zone.
@@ -309,10 +321,40 @@
  environment.etc."ssh/ssh_host_ed25519_key.pub".text =
    "${keys.hosts.lazyworkhorse.main}";

+  # ── Boot sentinel: auto-rollback on critical service failure ───────────────
+  services.rollbackSentinel.enable = true;
+  # Tier-1: failure triggers rollback
+  services.rollbackSentinel.tier1Services = [
+    "sshd" "docker" "traefik" "authelia"
+  ];
+  # Tier-2: warn only
+  services.rollbackSentinel.tier2Services = [
+    "gitea" "hermes" "ollama" "synapse" "nextcloud"
+    "vaultwarden" "wireguard" "homeassistant" "fail2ban"
+  ];
+  # Wait 2 minutes after boot before checking (lets services initialize)
+  services.rollbackSentinel.bootDelay = "120";
+  # Change boot default only (not --rollback-now) for safety
+  services.rollbackSentinel.rollbackMode = "set-default";
+
  services.fstrim.enable = true;

  services.zfs.autoSnapshot.enable = true;
  services.zfs.autoScrub.enable = true;
+
+  # Ensure com.sun:auto-snapshot is set on ZFS datasets so auto-snapshots actually run
+  systemd.services."zfs-set-auto-snapshot" = {
+    description = "Set com.sun:auto-snapshot=true on ZFS datasets";
+    after = [ "zfs-import.target" ];
+    wants = [ "zfs-import.target" ];
+    wantedBy = [ "multi-user.target" ];
+    path = with pkgs; [ zfs ];
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+      ExecStart = "${pkgs.zfs}/bin/zfs set -r com.sun:auto-snapshot=true rpool";
+    };
+  };
  
  # Mi50 config
  hardware.graphics = {
--- a/hosts/uConsole/configuration.nix
+++ b/hosts/uConsole/configuration.nix
@@ -0,0 +1,167 @@
+{ config, lib, pkgs, paths, self, ... }:
+
+{
+  # Basic Host Info
+  networking.hostName = "uConsole";
+  time.timeZone = "America/Montreal";
+  i18n.defaultLocale = "en_CA.UTF-8";
+
+  # System State
+  system.stateVersion = "25.05";
+
+  # Boot & Hardware (uconsole-cm5 module handles boot.loader)
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+
+  # Networking
+  networking.networkmanager.enable = true;
+  services.openssh = {
+    enable = true;
+    settings.PermitRootLogin = "prohibit-password";
+    settings.PasswordAuthentication = 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";
+    after = [ "network-online.target" ];
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      User = "gortium";
+      Group = "gortium";
+      ExecStart = "${pkgs.reticulumStack}/bin/rnsd";
+      Restart = "always";
+      RestartSec = "10s";
+      LimitNOFILE = 65536;
+    };
+  };
+
+  # ============================================================
+  # Kismet Service (Wi-Fi monitoring / mesh node)
+  # ============================================================
+  systemd.services.kismet = {
+    description = "Kismet Wi-Fi Monitor & IDS";
+    after = [ "network-online.target" ];
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      User = "gortium";
+      Group = "kismet";
+      ExecStart = "${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.
+}
--- a/hosts/uconsole-cm5/hardware-configuration.nix
+++ b/hosts/uconsole-cm5/hardware-configuration.nix
@@ -1,27 +1,23 @@
 { config, lib, pkgs, modulesPath, ... }:

 {
-  imports = [
-    (modulesPath + "/installer/scan/not-detected.nix")
-  ];
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];

  boot.initrd.availableKernelModules = [ "xhci_pci" "usbhid" "usb_storage" "sdhci_pci" "nvme" ];
  boot.initrd.kernelModules = [ ];
  boot.extraModulePackages = [ ];

-  # SD card partitions (nixos-uconsole layout)
-  fileSystems."/" = {
-    device = "/dev/disk/by-label/NIXOS_SD";
+  # 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" ];
  };

-  fileSystems."/boot/firmware" = {
-    device = "/dev/disk/by-label/FIRMWARE";
-    fsType = "vfat";
-    options = [ "fmask=0022" "dmask=0022" ];
-  };
-
  swapDevices = [ ];

  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
--- a/hosts/uconsole-cm5/configuration.nix
+++ b/hosts/uconsole-cm5/configuration.nix
@@ -1,58 +0,0 @@
-{ config, lib, pkgs, keys, ... }:
-
-{
-  networking.hostName = "uConsole";
-  time.timeZone = "America/Montreal";
-  i18n.defaultLocale = "en_CA.UTF-8";
-  system.stateVersion = "25.11";
-
-  # SSH — root access avec clés gortium + ai-worker
-  services.openssh = {
-    enable = true;
-    settings = {
-      PermitRootLogin = lib.mkForce "prohibit-password";
-      PasswordAuthentication = lib.mkForce false;
-    };
-  };
-
-  users.users.root.openssh.authorizedKeys.keys = with keys; [
-    users.gortium.main
-    users.ai-worker.main
-  ];
-
-  # AI worker user (Hermes SSH access)
-
-  # Age secret for gortium password (file created by user)
-  age.secrets.gortium_password = {
-    file = ../../secrets/gortium_password.age;
-  };
-
-  # Password file for gortium (merges with users/gortium/default.nix)
-
-  # WiFi via NetworkManager + secret agenix
-  networking.networkmanager.enable = true;
-
-  # Firmware
-  hardware.enableRedistributableFirmware = true;
-
-  # Hyprland Wayland compositor (manual start — no SDDM)
-  programs.hyprland = {
-    enable = true;
-    xwayland.enable = true;
-  };
-  # HackerGadgets AIO v2 board
-  hardware.uconsole-cm5-aio-v2 = {
-    enable = true;
-
-    # Rails actifs au boot
-    bootRails = {
-      GPS  = false;
-      LORA = false;
-      SDR  = false;
-      USB  = false;
-    };
-
-    enableGPS = false;
-  };
-
-}
--- a/modules/nixos/hardware/uconsole-cm5-aio-v2.nix
+++ b/modules/nixos/hardware/uconsole-cm5-aio-v2.nix
@@ -1,169 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
-let
-  cfg = config.hardware.uconsole-cm5-aio-v2;
-
-  # GPIO pin map matching the AIO v2 board hardware
-  #   SDR  (RTL-SDR):  GPIO 7
-  #   LoRa (SX1262) :  GPIO 16
-  #   USB Hub Interne: GPIO 23
-  #   GPS (GNSS)    :  GPIO 27
-  gpioMap = {
-    GPS  = 27;
-    LORA = 16;
-    SDR  = 7;
-    USB  = 23;
-  };
-
-  # Generate a script that applies boot rail states via pinctrl
-  applyRailsScript = pkgs.writeShellScript "apply-aio-v2-rails" (
-    ''
-      set -e
-      PINCTRL=${pkgs.libraspberrypi}/bin/pinctrl
-    ''
-    + concatStringsSep "" (mapAttrsToList (name: pin: ''
-      if [ "${if cfg.bootRails.${name} then "1" else "0"}" = "1" ]; then
-        echo "AIO v2: ${name} (GPIO${toString pin}) -> ON"
-        $PINCTRL set ${toString pin} op dh
-      else
-        echo "AIO v2: ${name} (GPIO${toString pin}) -> OFF"
-        $PINCTRL set ${toString pin} op dl
-      fi
-    '') gpioMap)
-  );
-
-  # aiov2_ctl CLI tool -- fetched from GitHub, available as `aiov2_ctl`
-  aiov2CtlPkg = pkgs.stdenv.mkDerivation rec {
-    pname = "aiov2_ctl";
-    version = "0-unstable-2026-06-16";
-
-    src = pkgs.fetchFromGitHub {
-      owner = "hackergadgets";
-      repo = "aiov2_ctl";
-      rev = "main";
-      hash = "sha256-hqOvS1K5pDVXAroUE50i5R9YqRgC2U3fzby6uuB67K0=";
-    };
-
-    dontUnpack = true;
-
-    installPhase = ''
-      mkdir -p $out/bin $out/share/aiov2_ctl/img
-      cp $src/aiov2_ctl.py $out/bin/aiov2_ctl
-      chmod +x $out/bin/aiov2_ctl
-      patchShebangs $out/bin/aiov2_ctl
-      substituteInPlace $out/bin/aiov2_ctl \
-        --replace-fail '"/usr/local/share/aiov2_ctl/img/' '"'$out'/share/aiov2_ctl/img/'
-      cp -r $src/img/* $out/share/aiov2_ctl/img/
-    '';
-
-    meta = {
-      description = "HackerGadgets uConsole AIO v2 GPIO control and telemetry tool";
-      homepage = "https://github.com/hackergadgets/aiov2_ctl";
-      license = lib.licenses.mit;
-      maintainers = with lib.maintainers; [ ];
-      platforms = [ "aarch64-linux" ];
-    };
-  };
-in {
-  options.hardware.uconsole-cm5-aio-v2 = {
-    enable = mkEnableOption "HackerGadgets uConsole AIO v2 board support";
-
-    bootRails = {
-      GPS = mkOption {
-        type = types.bool;
-        default = false;
-        description = "Enable GPS module at boot (GPIO 27)";
-      };
-      LORA = mkOption {
-        type = types.bool;
-        default = false;
-        description = "Enable LoRa module at boot (GPIO 16)";
-      };
-      SDR = mkOption {
-        type = types.bool;
-        default = false;
-        description = "Enable SDR module at boot (GPIO 7)";
-      };
-      USB = mkOption {
-        type = types.bool;
-        default = false;
-        description = "Enable internal USB hub at boot (GPIO 23)";
-      };
-    };
-
-    package = mkOption {
-      type = types.package;
-      default = aiov2CtlPkg;
-      defaultText = literalExpression "aiov2CtlPkg";
-      description = "aiov2_ctl package to use";
-    };
-
-    enableGPS = mkOption {
-      type = types.bool;
-      default = false;
-      description = ''
-        Enable GPS UART (/dev/ttyAMA0 at 9600 baud).
-        Requires enabling UART on the CM5 via boot.kernelParams.
-      '';
-    };
-
-    enableGUI = mkOption {
-      type = types.bool;
-      default = false;
-      description = ''
-        Enable the system tray GUI for aiov2_ctl.
-        Requires a desktop environment with system tray support.
-      '';
-    };
-  };
-
-  config = mkIf cfg.enable {
-    # Package the aiov2_ctl tool + pinctrl
-    environment.systemPackages = with pkgs; [
-      cfg.package
-      libraspberrypi      # provides pinctrl
-    ];
-
-    # Boot rail systemd oneshot service
-    systemd.services.aiov2-rails-boot = {
-      description = "Apply AIO v2 GPIO rail boot states";
-      after = [ "local-fs.target" ];
-      wants = [ "local-fs.target" ];
-      before = [ "multi-user.target" ];
-      wantedBy = [ "multi-user.target" ];
-      serviceConfig = {
-        Type = "oneshot";
-        ExecStart = "${applyRailsScript}";
-        RemainAfterExit = true;
-      };
-    };
-
-    # GPS configuration
-    boot.kernelParams = mkIf cfg.enableGPS [ "uart0=on" ];
-
-    users.users = mkIf cfg.enableGPS {
-      gortium = {
-        extraGroups = [ "dialout" ];
-      };
-    };
-
-    # GUI autostart (XDG)
-    systemd.user.services.aiov2-ctl-gui = mkIf cfg.enableGUI {
-      description = "AIO v2 System Tray Controller";
-      after = [ "graphical-session.target" ];
-      wants = [ "graphical-session.target" ];
-      wantedBy = [ "graphical-session.target" ];
-      serviceConfig = {
-        Type = "simple";
-        ExecStart = "${cfg.package}/bin/aiov2_ctl --gui";
-        Restart = "on-failure";
-        RestartSec = 5;
-      };
-      environment = {
-        AIOV2_CTL_DEBUG = "0";
-      };
-    };
-  };
-}
--- a/modules/nixos/services/default.nix
+++ b/modules/nixos/services/default.nix
@@ -1,5 +0,0 @@
-{
-  imports = [
-    ./systemd
-  ];
-}
--- a/modules/nixos/services/nixos-rollback.sh
+++ b/modules/nixos/services/nixos-rollback.sh
@@ -0,0 +1,400 @@
+#!/usr/bin/env bash
+# =============================================================================
+# nixos-rollback.sh — NixOS systemd-boot Rollback Script
+#
+# Detects a failed NixOS generation (critical services not starting) and sets
+# the previous generation as the default boot option for systemd-boot.
+# Logs all actions to syslog/journald and a local logfile. Fails safely when
+# no previous generation exists or required files are missing.
+#
+# Integration with the boot sentinel:
+#   sentinel-check.sh  →  detects Tier-1 service failures (sshd, docker,
+#                          traefik, authelia) after a boot
+#   nixos-rollback.sh  ←  called when sentinel exits nonzero; sets previous
+#                          generation as default for next boot
+#
+# Usage:
+#   nixos-rollback.sh                        # auto-detect & set previous gen
+#   nixos-rollback.sh --dry-run              # show what would be done
+#   nixos-rollback.sh --rollback-now         # also run nixos-rebuild switch
+#                                            #   --rollback for immediate fix
+#   nixos-rollback.sh --help                 # full help text
+#
+# Exit codes:
+#   0 — rollback applied (or dry-run would apply)
+#   1 — preflight failure (missing files, permissions)
+#   2 — no previous generation available
+#   3 — nixos-rebuild --rollback failed (only with --rollback-now)
+#
+# Installation on NixOS:
+#   Place in /usr/local/bin/nixos-rollback.sh and make executable.
+#   Add a systemd oneshot service to run it after sentinel-check detects
+#   failures, or invoke directly from a sentinel timer.
+# =============================================================================
+
+set -euo pipefail
+
+# ── Configuration ────────────────────────────────────────────────────────────
+# These can be overridden via environment variables for testing.
+LOADER_CONF="${NIXOS_ROLLBACK_LOADER_CONF:-/boot/loader/loader.conf}"
+ENTRIES_DIR="${NIXOS_ROLLBACK_ENTRIES_DIR:-/boot/loader/entries}"
+LOGFILE="${NIXOS_ROLLBACK_LOGFILE:-/var/log/nixos-rollback.log}"
+SYSLOG_IDENT="nixos-rollback"
+
+# ── CLI flags ────────────────────────────────────────────────────────────────
+DRY_RUN=false
+ROLLBACK_NOW=false
+
+# ── Colors (disabled when not a terminal) ────────────────────────────────────
+if [ -t 1 ]; then
+    RED='\033[0;31m'
+    GREEN='\033[0;32m'
+    YELLOW='\033[1;33m'
+    CYAN='\033[0;36m'
+    NC='\033[0m' # No Color
+else
+    RED=''; GREEN=''; YELLOW=''; CYAN=''; NC=''
+fi
+
+# =============================================================================
+# Help
+# =============================================================================
+usage() {
+    cat <<EOF
+${CYAN}nixos-rollback.sh${NC} — Set the previous NixOS generation as systemd-boot default
+
+${CYAN}USAGE${NC}
+    nixos-rollback.sh [OPTIONS]
+
+${CYAN}OPTIONS${NC}
+    --dry-run           Show what would be done without making changes
+    --rollback-now      Also run 'nixos-rebuild switch --rollback' for
+                        immediate fix of the running system (requires
+                        nixos-rebuild on PATH)
+    -h, --help          Show this help text
+
+${CYAN}DESCRIPTION${NC}
+    Reads the current default boot entry from ${LOADER_CONF},
+    determines the previous generation number, and writes it as the
+    new default.  The script only modifies systemd-boot config —
+    it does NOT touch the Nix store or system profile unless
+    --rollback-now is passed.
+
+    Designed as the rollback half of a boot sentinel:
+      1. System boots into generation N
+      2. sentinel-check.sh detects Tier-1 service failures
+      3. nixos-rollback.sh sets default to generation N-1
+      4. Next reboot uses the working generation
+
+${CYAN}EXIT CODES${NC}
+    0   Rollback applied (or dry-run would apply)
+    1   Preflight failure (missing files, permissions)
+    2   No previous generation available (only one generation)
+    3   nixos-rebuild --rollback failed (with --rollback-now)
+
+${CYAN}FILES${NC}
+    ${LOADER_CONF}      systemd-boot loader configuration
+    ${ENTRIES_DIR}/     generation entry .conf files
+    ${LOGFILE}          action log (append-only)
+EOF
+}
+
+# =============================================================================
+# Logging
+# =============================================================================
+log() {
+    local level="$1"; shift
+    local msg="$*"
+    local timestamp
+    timestamp="$(date '+%Y-%m-%d %H:%M:%S')"
+    echo "${timestamp} [${level}] ${msg}" >> "${LOGFILE}"
+    logger -t "${SYSLOG_IDENT}" -p "user.${level}" "${msg}"
+
+    # Also print to stderr for ERROR/WARN, stdout for INFO
+    case "${level}" in
+        ERROR) echo >&2 "${RED}[ERROR]${NC} ${msg}" ;;
+        WARN)  echo >&2 "${YELLOW}[WARN]${NC}  ${msg}" ;;
+        INFO)  echo " ${GREEN}[INFO]${NC}  ${msg}" ;;
+    esac
+}
+
+info()  { log "INFO" "$@"; }
+warn()  { log "WARN" "$@"; }
+error() { log "ERROR" "$@"; }
+
+# =============================================================================
+# Preflight checks
+# =============================================================================
+preflight() {
+    # Must run as root (need to write to /boot), unless overridden for testing
+    if [ -z "${NIXOS_ROLLBACK_SKIP_ROOT_CHECK:-}" ] && [ "$(id -u)" -ne 0 ]; then
+        error "This script must be run as root (needs write access to /boot/loader)"
+        error "Set NIXOS_ROLLBACK_SKIP_ROOT_CHECK=1 for testing against mock paths."
+        exit 1
+    fi
+
+    # Directories and files
+    if [ ! -d "${ENTRIES_DIR}" ]; then
+        error "Boot entries directory not found: ${ENTRIES_DIR}"
+        exit 1
+    fi
+
+    if [ ! -f "${LOADER_CONF}" ]; then
+        error "Loader config not found: ${LOADER_CONF}"
+        exit 1
+    fi
+
+    if [ ! -r "${LOADER_CONF}" ]; then
+        error "Cannot read loader config: ${LOADER_CONF}"
+        exit 1
+    fi
+
+    # Check write access to /boot/loader (parent of loader.conf)
+    local loader_dir
+    loader_dir="$(dirname "${LOADER_CONF}")"
+    if [ ! -w "${loader_dir}" ]; then
+        error "Cannot write to ${loader_dir} (insufficient permissions)"
+        exit 1
+    fi
+
+    # Logfile directory must exist
+    local log_dir
+    log_dir="$(dirname "${LOGFILE}")"
+    if [ ! -d "${log_dir}" ]; then
+        warn "Log directory ${log_dir} does not exist, creating it"
+        mkdir -p "${log_dir}" 2>/dev/null || {
+            error "Cannot create log directory ${log_dir}"
+            exit 1
+        }
+    fi
+
+    # Check --rollback-now dependencies
+    if [ "${ROLLBACK_NOW}" = true ]; then
+        if ! command -v nixos-rebuild &>/dev/null; then
+            error "nixos-rebuild not found on PATH (required for --rollback-now)"
+            exit 1
+        fi
+    fi
+}
+
+# =============================================================================
+# Generation helpers
+# =============================================================================
+
+# get_current_default: reads the current default entry from loader.conf
+# Returns: "nixos-generation-N.conf" or empty string
+get_current_default() {
+    grep -E '^default\s+' "${LOADER_CONF}" 2>/dev/null \
+        | awk '{print $2}' \
+        || true
+}
+
+# extract_gen_number: extracts the numeric generation from a conf filename
+# Input:  "nixos-generation-367.conf"
+# Output: 367
+extract_gen_number() {
+    echo "$1" | sed 's/nixos-generation-//;s/\.conf//'
+}
+
+# get_all_gen_numbers: returns sorted list of generation numbers from entries dir
+get_all_gen_numbers() {
+    local -a gens=()
+    local f n
+    for f in "${ENTRIES_DIR}"/nixos-generation-*.conf; do
+        [ -f "${f}" ] || continue
+        n="$(basename "${f}" | sed 's/nixos-generation-//;s/\.conf//')"
+        gens+=("${n}")
+    done
+
+    if [ "${#gens[@]}" -eq 0 ]; then
+        return 1
+    fi
+
+    # Sort numerically and output
+    printf '%s\n' "${gens[@]}" | sort -n
+}
+
+# get_previous_gen: given current generation number, find the previous one
+# from the list of all available generations
+get_previous_gen() {
+    local current="$1"
+    shift
+    local -a gens=("$@")
+
+    local prev=""
+    local g
+    for g in "${gens[@]}"; do
+        if [ "${g}" -lt "${current}" ]; then
+            prev="${g}"
+        fi
+    done
+
+    if [ -z "${prev}" ]; then
+        return 1
+    fi
+    echo "${prev}"
+}
+
+# =============================================================================
+# Main rollback logic
+# =============================================================================
+do_rollback() {
+    # Step 1: Read current default
+    local current_entry
+    current_entry="$(get_current_default)"
+
+    if [ -z "${current_entry}" ]; then
+        error "No 'default' entry found in ${LOADER_CONF}"
+        error "Cannot determine current generation — aborting"
+        exit 1
+    fi
+
+    info "Current default boot entry: ${current_entry}"
+
+    # Step 2: Build sorted list of all available generations
+    local -a all_gens=()
+    local line
+    while IFS= read -r line; do
+        all_gens+=("${line}")
+    done < <(get_all_gen_numbers || true)
+
+    if [ "${#all_gens[@]}" -eq 0 ]; then
+        error "No NixOS generation .conf files found in ${ENTRIES_DIR}"
+        exit 1
+    fi
+
+    info "Available generations: ${all_gens[*]}"
+
+    # Step 3: Find current generation number
+    local current_gen
+    current_gen="$(extract_gen_number "${current_entry}")"
+
+    # Verify current_gen is a valid number
+    if ! [[ "${current_gen}" =~ ^[0-9]+$ ]]; then
+        error "Could not parse generation number from '${current_entry}'"
+        exit 1
+    fi
+
+    # Step 4: Find the previous generation
+    local prev_gen
+    prev_gen="$(get_previous_gen "${current_gen}" "${all_gens[@]}")" || {
+        error "No previous generation found before generation ${current_gen}"
+        error "This is the oldest available generation — cannot roll back further"
+        exit 2
+    }
+
+    local prev_entry="nixos-generation-${prev_gen}.conf"
+    local prev_conf_path="${ENTRIES_DIR}/${prev_entry}"
+
+    if [ ! -f "${prev_conf_path}" ]; then
+        error "Previous generation entry not found: ${prev_conf_path}"
+        error "The .conf file for generation ${prev_gen} is missing — cannot roll back"
+        exit 1
+    fi
+
+    info "Target rollback generation: ${prev_gen} → ${prev_entry}"
+
+    # Step 5: Apply the rollback
+    if [ "${DRY_RUN}" = true ]; then
+        echo ""
+        echo " ${CYAN}[DRY RUN]${NC} Would change ${LOADER_CONF}:"
+        echo "   ${YELLOW}-${NC} default ${current_entry}"
+        echo "   ${GREEN}+${NC} default ${prev_entry}"
+        echo ""
+        info "DRY RUN — no changes made"
+        exit 0
+    fi
+
+    # Write new default
+    # Use sed with a backup (.bak)
+    sed -i.bak "s/^default\s\+${current_entry}/default ${prev_entry}/" "${LOADER_CONF}"
+
+    # Verify the change was applied
+    local new_default
+    new_default="$(get_current_default)"
+    if [ "${new_default}" != "${prev_entry}" ]; then
+        error "Failed to set default boot entry to ${prev_entry}"
+        error "Current default is still: ${new_default}"
+        # Attempt to restore backup
+        if [ -f "${LOADER_CONF}.bak" ]; then
+            cp "${LOADER_CONF}.bak" "${LOADER_CONF}"
+            info "Restored backup from ${LOADER_CONF}.bak"
+        fi
+        exit 1
+    fi
+
+    info "Successfully set default boot entry to ${prev_entry} (generation ${prev_gen})"
+    info "Backup of previous config saved to ${LOADER_CONF}.bak"
+
+    # Step 6: Optionally run nixos-rebuild switch --rollback
+    if [ "${ROLLBACK_NOW}" = true ]; then
+        echo ""
+        info "Running nixos-rebuild switch --rollback for immediate effect..."
+        if nixos-rebuild switch --rollback 2>&1 | while IFS= read -r line; do
+            logger -t "${SYSLOG_IDENT}" "nixos-rebuild: ${line}"
+            echo "    ${line}"
+        done; then
+            info "nixos-rebuild switch --rollback completed successfully"
+        else
+            local rc=$?
+            error "nixos-rebuild switch --rollback failed with exit code ${rc}"
+            error "The boot default has been changed but the current system was NOT rolled back"
+            error "Reboot to apply the rollback"
+            exit 3
+        fi
+    fi
+
+    info "Rollback complete. Next boot will use generation ${prev_gen}."
+    if [ "${ROLLBACK_NOW}" = false ]; then
+        echo ""
+        echo " ${YELLOW}NOTE:${NC} The current running system is unchanged."
+        echo "       Reboot to boot into generation ${prev_gen}."
+        echo "       Or re-run with --rollback-now for immediate effect."
+    fi
+}
+
+# =============================================================================
+# Main
+# =============================================================================
+main() {
+    # Parse arguments
+    while [ $# -gt 0 ]; do
+        case "$1" in
+            --dry-run)
+                DRY_RUN=true
+                shift
+                ;;
+            --rollback-now)
+                ROLLBACK_NOW=true
+                shift
+                ;;
+            -h|--help)
+                usage
+                exit 0
+                ;;
+            *)
+                echo >&2 "Unknown option: $1"
+                echo >&2 "Use --help for usage information."
+                exit 1
+                ;;
+        esac
+    done
+
+    echo ""
+    echo " ${CYAN}═══ NixOS systemd-boot Rollback ═══${NC}"
+    echo ""
+
+    preflight
+
+    if [ "${DRY_RUN}" = true ]; then
+        info "DRY RUN mode — no changes will be made"
+    fi
+    if [ "${ROLLBACK_NOW}" = true ]; then
+        info "ROLLBACK NOW mode — will also run nixos-rebuild switch --rollback"
+    fi
+
+    echo ""
+    do_rollback
+}
+
+main "$@"
--- a/modules/nixos/services/rollback-sentinel.nix
+++ b/modules/nixos/services/rollback-sentinel.nix
@@ -0,0 +1,184 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+let
+  cfg = config.services.rollbackSentinel;
+
+  # ── Scripts ────────────────────────────────────────────────────────────────
+
+  # Sentinel check — verifies Tier-1 services are active after boot.
+  # Exits nonzero when any Tier-1 service is down, which triggers the rollback.
+  sentinelCheck = pkgs.writeShellScriptBin "sentinel-check.sh" ''
+    #!/usr/bin/env bash
+    set -euo pipefail
+
+    SYSLOG_IDENT="nixos-sentinel"
+    LOGFILE="/var/log/nixos-sentinel.log"
+
+    echo "=== NixOS Sentinel Check ==="
+    echo "Tier-1 services: ${builtins.toString cfg.tier1Services}"
+    echo "Tier-2 services: ${builtins.toString cfg.tier2Services}"
+
+    FAILED=0
+
+    # Check Tier-1 services — any failure means rollback
+    for svc in ${builtins.toString cfg.tier1Services}; do
+      if systemctl is-active --quiet "$svc" 2>/dev/null; then
+        echo "  [OK]  Tier-1: $svc"
+      else
+        echo "  [FAIL] Tier-1: $svc is NOT active"
+        logger -t "$SYSLOG_IDENT" -p user.err "Tier-1 FAILURE: $svc is not active"
+        FAILED=1
+      fi
+    done
+
+    # Check Tier-2 services — warn only
+    for svc in ${builtins.toString cfg.tier2Services}; do
+      if systemctl is-active --quiet "$svc" 2>/dev/null; then
+        echo "  [OK]  Tier-2: $svc"
+      else
+        echo "  [WARN] Tier-2: $svc is NOT active"
+        logger -t "$SYSLOG_IDENT" -p user.warn "Tier-2 WARNING: $svc is not active"
+      fi
+    done
+
+    echo "=== Sentinel result: $([ "$FAILED" -eq 0 ] && echo 'PASS' || echo 'FAIL') ==="
+    echo "$(date '+%Y-%m-%d %H:%M:%S') [INFO] sentinel $([ "$FAILED" -eq 0 ] && echo 'PASS' || echo 'FAIL')" >> "$LOGFILE"
+    exit $FAILED
+  '';
+
+  # Rollback script — package the companion shell script from this directory.
+  # Uses builtins.readFile to embed the content at evaluation time.
+  rollbackScript = pkgs.writeShellScriptBin "nixos-rollback.sh" (builtins.readFile ./nixos-rollback.sh);
+
+  # Resolve rollback flags from config
+  rollbackFlags =
+    if cfg.rollbackMode == "dry-run" then "--dry-run"
+    else if cfg.rollbackMode == "rollback-now" then "--rollback-now"
+    else "";
+
+in {
+  options.services.rollbackSentinel = {
+    enable = mkEnableOption "NixOS Rollback Sentinel — auto-rollback on critical service failure";
+
+    tier1Services = mkOption {
+      type = types.listOf types.str;
+      default = [ "sshd" "docker" "traefik" "authelia" ];
+      description = ''
+        Tier-1 services whose failure triggers an automatic systemd-boot rollback.
+        On boot, the sentinel waits ${cfg.bootDelay} seconds, then checks each
+        service. If ANY service in this list is inactive, it runs the rollback
+        script which sets the previous NixOS generation as the default boot entry.
+      '';
+    };
+
+    tier2Services = mkOption {
+      type = types.listOf types.str;
+      default = [
+        "gitea" "hermes" "ollama" "synapse" "nextcloud"
+        "vaultwarden" "wireguard" "homeassistant" "fail2ban"
+      ];
+      description = ''
+        Tier-2 services whose failure is logged as a warning but does NOT trigger
+        an automatic rollback. Useful for detecting non-critical service issues.
+      '';
+    };
+
+    tier3InfoServices = mkOption {
+      type = types.listOf types.str;
+      default = [
+        "act_runner" "syncthing" "restic" "fava"
+        "homer" "cups" "fstrim"
+      ];
+      description = ''
+        Tier-3 informational checks (log-only, no warning). These are services
+        that the sentinel will note the status of for diagnostics.
+      '';
+    };
+
+    bootDelay = mkOption {
+      type = types.str;
+      default = "120";
+      description = ''
+        Seconds to wait after multi-user.target before running the boot-time
+        sentinel check. This gives Tier-1 services time to start before
+        the sentinel decides they've failed.
+      '';
+    };
+
+    rollbackMode = mkOption {
+      type = types.enum [ "set-default" "rollback-now" "dry-run" ];
+      default = "set-default";
+      description = ''
+        Rollback strategy when Tier-1 failures are detected:
+        - set-default: Write the previous generation to loader.conf (next reboot).
+        - rollback-now: Also run nixos-rebuild switch --rollback for immediate fix.
+        - dry-run: Log what would happen but take no action (testing).
+      '';
+    };
+
+    enablePostRebuild = mkOption {
+      type = types.bool;
+      default = true;
+      description = ''
+        When enabled, the sentinel check runs after every nixos-rebuild switch
+        activation. If a newly deployed generation has Tier-1 failures, it
+        triggers rollback immediately.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    # ── Deploy scripts to PATH ───────────────────────────────────────────────
+    environment.systemPackages = [ sentinelCheck rollbackScript ];
+
+    # Ensure log directory exists
+    systemd.tmpfiles.rules = [
+      "d /var/log/nixos-sentinel 0755 root root -"
+    ];
+
+    # ── Boot-time sentinel service ───────────────────────────────────────────
+    # Runs after multi-user.target with a configurable delay, checks Tier-1
+    # services, and triggers rollback if any are down.
+    systemd.services.nixos-sentinel = {
+      description = "NixOS Boot Sentinel — check critical services, roll back on failure";
+      after = [ "network.target" "multi-user.target" ];
+      wants = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+
+      path = with pkgs; [ coreutils gawk gnused systemd ];
+
+      serviceConfig = {
+        Type = "oneshot";
+        RemainAfterExit = true;
+        ExecStartPre = "${pkgs.coreutils}/bin/sleep ${cfg.bootDelay}";
+        ExecStart = "${sentinelCheck}/bin/sentinel-check.sh";
+        ExecStartPost = "${rollbackScript}/bin/nixos-rollback.sh ${rollbackFlags}";
+      };
+    };
+
+    # ── Post-rebuild sentinel service (triggered by activation script) ──────
+    systemd.services.nixos-sentinel-rebuild = mkIf cfg.enablePostRebuild {
+      description = "NixOS Post-Rebuild Sentinel — check services after nixos-rebuild";
+      after = [ "network.target" ];
+
+      path = with pkgs; [ coreutils gawk gnused systemd ];
+
+      serviceConfig = {
+        Type = "oneshot";
+        ExecStart = "${sentinelCheck}/bin/sentinel-check.sh";
+        ExecStartPost = "${rollbackScript}/bin/nixos-rollback.sh ${rollbackFlags}";
+      };
+    };
+
+    # Activation script — fires after every nixos-rebuild switch
+    system.activationScripts.rollback-sentinel = mkIf cfg.enablePostRebuild ''
+      # Start the post-rebuild sentinel in the background.
+      # This runs on every activation (boot + nixos-rebuild). On boot the
+      # boot-time service handles it, so this is primarily for nixos-rebuild,
+      # but running twice is safe (idempotent rollback).
+      systemctl start nixos-sentinel-rebuild.service --no-block 2>/dev/null || true
+    '';
+  };
+}
--- a/modules/nixos/services/staging-vm.nix.bak
+++ b/modules/nixos/services/staging-vm.nix.bak
@@ -1,275 +0,0 @@
-{ config, pkgs, lib, ... }:
-
-with lib;
-
-let
-  cfg = config.services.stagingVm;
-in
-{
-  options.services.stagingVm = {
-    enable = mkOption {
-      type = types.bool;
-      default = false;
-      description = "Enable KVM/libvirt staging VM for compose PR testing";
-    };
-
-    vmName = mkOption {
-      type = types.str;
-      default = "compose-test-vm";
-      description = "Name of the staging VM";
-    };
-
-    memory = mkOption {
-      type = types.str;
-      default = "4096";
-      description = "RAM allocated to the staging VM (MB)";
-    };
-
-    vcpus = mkOption {
-      type = types.int;
-      default = 2;
-      description = "Number of vCPUs for the staging VM";
-    };
-
-    storagePath = mkOption {
-      type = types.str;
-      default = "/var/lib/libvirt/images";
-      description = "Path for libvirt storage pool";
-    };
-
-    dataPath = mkOption {
-      type = types.str;
-      default = "/var/lib/staging-vm";
-      description = "Path for compose test data (PR checkouts, test results)";
-    };
-  };
-
-  config = mkIf cfg.enable {
-    # Enable libvirt daemon
-    virtualisation.libvirtd = {
-      enable = true;
-      qemu = {
-        package = pkgs.qemu_kvm;
-        runAsRoot = true;
-        swtpm.enable = true;
-        ovmf = {
-          enable = true;
-          packages = [ pkgs.OVMFFull.fd ];
-        };
-      };
-    };
-
-    # Kernel modules + groups already handled in configuration.nix
-
-    # libvirt NAT network (192.168.122.0/24)
-    environment.etc."libvirt/qemu/networks/default.xml" = {
-      text = ''
-        <network>
-          <name>default</name>
-          <uuid>2b8f7a3c-9e5d-4a1f-bc3d-6e7a8f9b0c1d</uuid>
-          <forward mode='nat'>
-            <nat>
-              <port start='1024' end='65535'/>
-            </nat>
-          </forward>
-          <bridge name='virbr0' stp='on' delay='0'/>
-          <mac address='52:54:00:12:34:56'/>
-          <ip address='192.168.122.1' netmask='255.255.255.0'>
-            <dhcp>
-              <range start='192.168.122.2' end='192.168.122.254'/>
-            </dhcp>
-          </ip>
-        </network>
-      '';
-      # Autostart the network so it comes up on boot
-      mode = "0644";
-    };
-
-    # Ensure the default network is defined and autostarted
-    systemd.services.libvirtd = {
-      postStart = ''
-        ${pkgs.libvirt}/bin/virsh net-define /etc/libvirt/qemu/networks/default.xml 2>/dev/null || true
-        ${pkgs.libvirt}/bin/virsh net-autostart default 2>/dev/null || true
-        ${pkgs.libvirt}/bin/virsh net-start default 2>/dev/null || true
-      '';
-    };
-
-    # Storage directory for VM images
-    systemd.tmpfiles.rules = [
-      "d ${cfg.storagePath} 0755 root root -"
-      "d ${cfg.dataPath} 0755 root root -"
-    ];
-
-    # Ensure storage pool exists in libvirt
-    systemd.services.libvirtd.postStart = mkAfter ''
-      ${pkgs.libvirt}/bin/virsh pool-define-as default dir --target "${cfg.storagePath}" 2>/dev/null || true
-      ${pkgs.libvirt}/bin/virsh pool-autostart default 2>/dev/null || true
-      ${pkgs.libvirt}/bin/virsh pool-start default 2>/dev/null || true
-    '';
-
-    # Firewall: allow traffic from virbr0 to host and outbound NAT
-    networking.firewall = {
-      extraCommands = ''
-        # Allow inbound DHCP/DNS from libvirt guests
-        iptables -I INPUT -i virbr0 -p udp --dport 67:68 -j ACCEPT
-        iptables -I INPUT -i virbr0 -p tcp --dport 53 -j ACCEPT
-        iptables -I INPUT -i virbr0 -p udp --dport 53 -j ACCEPT
-        
-        # Allow established/related traffic back to guests
-        iptables -I FORWARD -i virbr0 -o virbr0 -j ACCEPT
-        iptables -I FORWARD -o virbr0 -j ACCEPT
-        iptables -I FORWARD -i virbr0 -j ACCEPT
-      '';
-    };
-
-    # Packages needed for VM management
-    environment.systemPackages = with pkgs; [
-      libvirt
-      qemu_kvm
-      virt-manager  # optional GUI for manual management
-      OVMFFull
-      swtpm
-    ];
-
-    # Enable docker in the host (already enabled, but ensure for compose testing)
-    virtualisation.docker.enable = true;
-
-    # Helper script: pr-test-vm
-    # Usage:
-    #   pr-test-vm build    — build the staging VM derivation
-    #   pr-test-vm start    — boot the VM with a compose PR branch
-    #   pr-test-vm stop     — graceful shutdown
-    #   pr-test-vm destroy  — force stop + delete VM
-    #   pr-test-vm ssh      — SSH into the running VM
-    systemd.tmpfiles.rules = mkAfter [
-      "d ${cfg.dataPath}/scripts 0755 root root -"
-    ];
-
-    environment.systemPackages = [ (pkgs.writeShellScriptBin "pr-test-vm" ''
-      set -euo pipefail
-
-      DATA="${cfg.dataPath}"
-      VM_NAME="${cfg.vmName}"
-      VM_IMAGE="''${DATA}/''${VM_NAME}.qcow2"
-      VM_PORT=2223
-
-      build_vm() {
-        echo "==> Building NixOS staging VM for compose testing..."
-        # Build the VM config inline — a minimal NixOS with Docker + SSH
-        cat > /tmp/staging-vm-config.nix << 'NIXEOF'
-          { config, pkgs, lib, ... }: {
-            boot.loader.grub.devices = [ "/dev/vda" ];
-            boot.loader.timeout = 0;
-
-            # Minimal kernel
-            boot.kernelParams = [ "console=ttyS0" ];
-            boot.initrd.kernelModules = [ "virtio_blk" "virtio_net" "virtio_pci" ];
-
-            # SSH access
-            services.openssh = {
-              enable = true;
-              settings.PasswordAuthentication = false;
-              settings.PermitRootLogin = "prohibit-password";
-            };
-
-            # Docker for compose testing
-            virtualisation.docker.enable = true;
-
-            # Network (DHCP via virbr0)
-            networking.useDHCP = true;
-            networking.firewall.enable = false;
-
-            # Users
-            users.users.root.openssh.authorizedKeys.keys = [
-              "$(cat /root/.ssh/authorized_keys 2>/dev/null || echo 'ssh-ed25519 AAAAC3... placeholder')"
-            ];
-            users.users.testrunner = {
-              isNormalUser = true;
-              extraGroups = [ "docker" ];
-              openssh.authorizedKeys.keys = [
-                "$(cat /root/.ssh/authorized_keys 2>/dev/null || echo 'ssh-ed25519 AAAAC3... placeholder')"
-              ];
-            };
-
-            # Git + compose tools
-            environment.systemPackages = with pkgs; [ git docker-compose curl ];
-
-            system.stateVersion = "24.11";
-          }
-        NIXEOF
-
-        nixos-rebuild build-vm -I nixpkgs=channel:nixos-unstable \
-          --arg configuration 'import /tmp/staging-vm-config.nix' \
-          --out-link "''${DATA}/vm-result"
-        echo "==> VM built. Run 'pr-test-vm start' to boot."
-      }
-
-      start_vm() {
-        if [ -f "''${VM_IMAGE}" ]; then
-          echo "==> Booting existing VM..."
-        else
-          echo "==> Creating VM image..."
-          ${pkgs.qemu_kvm}/bin/qemu-img create -f qcow2 "''${VM_IMAGE}" 20G
-        fi
-
-        # Check if already running
-        if ${pkgs.libvirt}/bin/virsh list --name 2>/dev/null | grep -q "''${VM_NAME}"; then
-          echo "==> VM already running."
-          exit 0
-        fi
-
-        ${pkgs.qemu_kvm}/bin/qemu-system-x86_64 \
-          -name "''${VM_NAME}" \
-          -machine q35,accel=kvm \
-          -cpu host \
-          -smp ${toString cfg.vcpus} \
-          -m ${cfg.memory} \
-          -drive file="''${VM_IMAGE}",if=virtio,format=qcow2 \
-          -netdev user,id=net0,hostfwd=tcp::''${VM_PORT}-:22 \
-          -device virtio-net-pci,netdev=net0 \
-          -nographic \
-          -serial mon:stdio \
-          -pidfile "''${DATA}/''${VM_NAME}.pid" \
-          -daemonize
-
-        echo "==> VM booting... SSH on port ''${VM_PORT}"
-        echo "==> Wait for it: ssh -p ''${VM_PORT} testrunner@localhost"
-      }
-
-      stop_vm() {
-        PIDFILE="''${DATA}/''${VM_NAME}.pid"
-        if [ -f "''${PIDFILE}" ]; then
-          PID=$(cat "''${PIDFILE}")
-          kill "''${PID}" 2>/dev/null || true
-          rm -f "''${PIDFILE}"
-          echo "==> VM stopped."
-        else
-          ${pkgs.libvirt}/bin/virsh destroy "''${VM_NAME}" 2>/dev/null || true
-          echo "==> VM destroyed."
-        fi
-      }
-
-      ssh_vm() {
-        exec ssh -p "''${VM_PORT}" -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null "testrunner@localhost" "$@"
-      }
-
-      # Main dispatch
-      case "''${1:-help}" in
-        build)   build_vm ;;
-        start)   start_vm ;;
-        stop)    stop_vm ;;
-        destroy) stop_vm; rm -f "''${VM_IMAGE}"; echo "==> VM deleted." ;;
-        ssh)     shift; ssh_vm "$@" ;;
-        *)
-          echo "Usage: pr-test-vm {build|start|stop|destroy|ssh}"
-          echo ""
-          echo "  build    — build the NixOS VM derivation"
-          echo "  start    — boot the VM (create image if needed)"
-          echo "  stop     — graceful VM shutdown"
-          echo "  destroy  — stop + delete VM image"
-          echo "  ssh      — SSH into the running VM"
-          ;;
-      esac
-    '') ];
-  };
-}
--- a/modules/nixos/services/wireguard-client.nix
+++ b/modules/nixos/services/wireguard-client.nix
@@ -1,54 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-
-let
-  cfg = config.gortium.wireguard-client;
-in
-{
-  ##### Options #####
-  options.gortium.wireguard-client = {
-    enable = mkEnableOption "WireGuard VPN client to lazyworkhorse VPN server";
-
-    vpnIp = mkOption {
-      type = types.str;
-      description = "Assigned VPN IP with CIDR, e.g. \"10.8.0.4/24\"";
-      example = "10.8.0.4/24";
-    };
-
-    privateKeyFile = mkOption {
-      type = types.path;
-      description = "Path to the WireGuard private key (age-encrypted, via agenix)";
-    };
-
-    presharedKeyFile = mkOption {
-      type = types.nullOr types.path;
-      default = null;
-      description = "Path to the WireGuard preshared key (optional, age-encrypted)";
-    };
-  };
-
-  ##### Config #####
-  config = mkIf cfg.enable {
-    networking.wireguard.interfaces = {
-      wg0 = {
-        ips = [ cfg.vpnIp ];
-        privateKeyFile = cfg.privateKeyFile;
-
-        peers = [
-          {
-            # Server public key (lazyworkhorse wg-easy)
-            publicKey = "rY9zII3AOm8rog2rv02PyA3Bq7zdvTOGkZapfCV1DkE=";
-            presharedKeyFile = cfg.presharedKeyFile;
-            # Split-tunnel: only route the VPN subnet
-            allowedIPs = [ "10.8.0.0/24" ];
-            endpoint = "vpn.lazyworkhorse.net:51820";
-            persistentKeepalive = 25;
-          }
-        ];
-      };
-    };
-
-    environment.systemPackages = with pkgs; [ wireguard-tools ];
-  };
-}
--- a/overlays/reticulum.nix
+++ b/overlays/reticulum.nix
@@ -0,0 +1,77 @@
+final: prev: let
+  python3 = final.python3;
+  pyPkgs = python3.pkgs;
+in {
+  reticulumStack = python3.pkgs.buildPythonApplication rec {
+    pname = "reticulum";
+    version = "1.2.9";
+    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";
+    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";
+    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";
+    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;
+    };
+  };
+}
--- a/patches/0008-panel-cwu50-fix-init-seq1.patch
+++ b/patches/0008-panel-cwu50-fix-init-seq1.patch
@@ -1,19 +0,0 @@
--- a/drivers/gpu/drm/panel/panel-cwu50.c
-+++ b/drivers/gpu/drm/panel/panel-cwu50.c
-@@ -58,5 +58,8 @@
- 	dcs_write_seq(0x72,0x06);
- 	dcs_write_seq(0x75,0x03);
-+	/* DSI_INIT0: set 4 lanes (bits[1:0]=11) */
-+	dcs_write_seq(0x80,0x03);
- 	dcs_write_seq(0xE0,0x01);
-+
- 	dcs_write_seq(0x00,0x00);
- 	dcs_write_seq(0x01,0x47);//VCOM0x47
-@@ -721,6 +723,6 @@
- 	dsi->lanes = 4;
- 	dsi->format = MIPI_DSI_FMT_RGB888;
-	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
-+	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
- 
- 	ctx->id_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_IN);
- 	if (IS_ERR(ctx->id_gpio)) {
--- a/1
+++ b/1
@@ -1 +0,0 @@
-/nix/store/z86r4awsbrc5q9qhwwi757wxixcqgn31-nixos-system-uConsole-25.11.20260608.e820eb4
--- a/1
+++ b/1
@@ -1 +0,0 @@
-/nix/store/7y7rfksqcf5smz59jjixyl56bxq50j9g-nixos-system-uConsole-25.11.20260608.e820eb4
--- a/secrets/gortium_password.age
+++ b/secrets/gortium_password.age
@@ -1,10 +0,0 @@
-----BEGIN AGE ENCRYPTED FILE-----
-YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IHNzaC1lZDI1NTE5IEdoTUQ4QSA4MlFz
-SHFjYjJMVHRlTWNGVGI2bHQxc0xRd2tlaExlM0NFMWhlbkR2bVg0CkxxenVTaXkr
-eWxybDdCeUM0ejRvZWI4cFZCWm5VczRvZkNnT0d5Y1oyYmsKLT4gK1NmRzVtLWdy
-ZWFzZSB3UDI6TyNaCnF4Ylk0QWduaXZxRFBFbDBOZ0dxeGxiWTVCYjRtZTJBRkFC
-YU5qaytYWWI4OWl1K1FSdXNlY2JXZjkzak9tTHkKVFlCRlRqY1FVSzFmNS9yZmxF
-aEUxelUwNEpKN3VXYi9KUWN4bXFscm5oUEFOajhRZDlERWVYcFgvQQotLS0gK1JI
-VERTQjB6d1k3NDQwbjNveXBqcFk1WE96cHlaTTVkTWRMZENPamFJZwpcT1CP/KvU
-CsunvfX9RBlSSKuw4eem9N9s3JqJNj4FRQizNx6QzlE1vSME
-----END AGE ENCRYPTED FILE-----
--- a/secrets/home_wifi.age
+++ b/secrets/home_wifi.age
@@ -1,10 +0,0 @@
-----BEGIN AGE ENCRYPTED FILE-----
-YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IHNzaC1lZDI1NTE5IEdoTUQ4QSAycE1Y
-YmMvUWZpK2VKQVlqaHFtaERBRGROcFIyL0d6dEVRQmFxLzlqdFZNCkYxWkNIUXRZ
-V0dQOG4zY3U3Nk1JelBtY0cwUGdxaEI3dmZaVTZId04rVTQKLT4geV1cZC4wMnst
-Z3JlYXNlIDYgOG1IME1xCkQ0RGN1NU1FUWk0Y1RmamNEY0tJWmFQNGdoMkROcGVy
-aU5UYVFobVRLMVVUQ1JicUM2c0tSVzRQdEZ0VE5YamQKZUxPeVpLWDZJR0hqemdD
-cmkyUUdFZEZKZjBDNGhmNFR6bVUKLS0tIDRQUGR5RGI5UEhGNk5EQWw4dFk0R01k
-TUJWOFpleXBUajFPckFmem52cGsKHzn+QnuYLI2NEh5WWZQHrNuvVzYk+kVjsAsn
-KNS2dHjvadAopVY2Gypldf1p2RRtmgZkDHaPlNzv5Hk=
-----END AGE ENCRYPTED FILE-----
--- a/secrets/secrets.nix
+++ b/secrets/secrets.nix
@@ -8,8 +8,6 @@ let
 in
 {
  "containers.env.age".publicKeys = authorizedKeys;
-  "gortium_password.age".publicKeys = authorizedKeys;
-  "home_wifi.age".publicKeys = authorizedKeys;
  "lazyworkhorse_host_ssh_key.age".publicKeys = authorizedKeys;
  "n8n_ssh_key.age".publicKeys = authorizedKeys;
  "openclaw_gateway_token.age".publicKeys = authorizedKeys;
--- a/users/ai-worker/ai-worker.nix
+++ b/users/ai-worker/ai-worker.nix
@@ -22,6 +22,7 @@
  #   - 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 = [
--- a/users/gortium/gortium.nix
+++ b/users/gortium/gortium.nix
@@ -1,6 +1,4 @@
 { pkgs, inputs, config, keys, ... }: {
-  home-manager.extraSpecialArgs = { inherit (config.networking) hostName; dotfiles = ../../assets/dotfiles; };
-  home-manager.users.gortium = import ./home.nix;
  users.users.gortium = {
    isNormalUser = true;
    extraGroups = [ "wheel" "docker" "video" "render"];
@@ -8,10 +6,9 @@
    packages = with pkgs; [
      tree
      btop
+      nh
    ];
    shell = pkgs.zsh;
-    passwordFile = config.age.secrets.gortium_password.path;
-    ignoreShellProgramCheck = true;
    openssh.authorizedKeys.keys = [
      keys.users.gortium.main
    ];
--- a/users/gortium/home.nix
+++ b/users/gortium/home.nix
@@ -1,65 +0,0 @@
-{ pkgs, lib, config, inputs, hostName, ... }:
-
-let
-  dotfiles = ../../assets/dotfiles;
-  isUconsole = hostName == "uConsole";
-in {
-  home.username = "gortium";
-  home.homeDirectory = "/home/gortium";
-  home.stateVersion = "23.11";
-  programs.home-manager.enable = true;
-
-  home.file = {
-    # tmux
-    ".tmux.conf".source = "${dotfiles}/tmux/.tmux.conf";
-
-    # kitty
-    ".config/kitty/kitty.conf".source = "${dotfiles}/kitty/.config/kitty/kitty.conf";
-
-    # nvim
-    ".config/nvim/init.lua".source = "${dotfiles}/nvim/.config/nvim/init.lua";
-
-    # starship
-    ".config/starship.toml".source = "${dotfiles}/starship/.config/starship.toml";
-
-    # btop
-    ".config/btop/btop.conf".source = "${dotfiles}/btop/.config/btop/btop.conf";
-
-    # waybar
-    ".config/waybar/style.css".source = "${dotfiles}/waybar/.config/waybar/style.css";
-    ".config/waybar/config.jsonc".source = "${dotfiles}/waybar/.config/waybar/config.jsonc";
-
-    # wofi
-    ".config/wofi/style.css".source = "${dotfiles}/wofi/.config/wofi/style.css";
-    ".config/wofi/config".source = "${dotfiles}/wofi/.config/wofi/config";
-
-    # yazi
-    ".config/yazi/yazi.toml".source = "${dotfiles}/yazi/.config/yazi/yazi.toml";
-
-    # hyprland — common config
-    ".config/hypr/hyprland.conf".source = "${dotfiles}/hypr/.config/hypr/hyprland.conf";
-    ".config/hypr/hypridle.conf".source = "${dotfiles}/hypr/.config/hypr/hypridle.conf";
-    ".config/hypr/hyprlock.conf".source = "${dotfiles}/hypr/.config/hypr/hyprlock.conf";
-    ".config/hypr/hyprpaper.conf".source = "${dotfiles}/hypr/.config/hypr/hyprpaper.conf";
-    ".config/hypr/mocha.conf".source = "${dotfiles}/hypr/.config/hypr/mocha.conf";
-
-    # hyprland — host-specific monitor config
-    ".config/hypr/host/monitors.conf".source =
-      if isUconsole
-      then "${dotfiles}/hypr/.config/hypr/hosts/uconsole.conf"
-      else "${dotfiles}/hypr/.config/hypr/hosts/laptop.conf";
-  };
-
-  home.packages = with pkgs; [
-    git zsh tmux starship
-    neovim kitty
-    btop yazi ripgrep fd fzf
-  ] ++ lib.optionals (!isUconsole) [
-    waybar wofi swww hyprshot
-  ] ++ lib.optionals isUconsole [
-    brightnessctl
-  ];
-
-  programs.zsh.enable = true;
-  programs.starship.enable = true;
-}
Author	SHA1	Message	Date
Hermes	15f70019d5	feat: integrate rollback sentinel as NixOS module Add rollback-sentinel NixOS module that: - Deploys sentinel-check.sh (inline) and nixos-rollback.sh (from file) as system packages - Runs a boot-time systemd oneshot service after multi-user.target with configurable delay — checks Tier-1 services, triggers rollback on failure - Runs a post-rebuild service via activation script after every nixos-rebuild switch - Exposes options for tier1Services, tier2Services, tier3InfoServices, bootDelay, rollbackMode (set-default/rollback-now/dry-run), and enablePostRebuild Module wired into flake.nix for lazyworkhorse and enabled in configuration.nix with standard Tier-1/2 service lists and 120s delay.	2026-05-25 00:08:39 -04:00
Hermes	e216c8edac	fix: update compose submodule - honcho embedding config fix + deriver in CMD	2026-05-23 18:54:54 -04:00
Hermes	2b4b2e2216	fix: update compose submodule - honcho config fixes	2026-05-23 16:51:24 -04:00
Hermes	6be4076372	fix: update compose submodule to fix honcho config corrupted values	2026-05-23 16:43:22 -04:00
Hermes	690873d0e4	fix: update compose submodule for honcho auth + LLM config	2026-05-23 08:34:46 -04:00
Hermes	cd817c7fd2	chore: update compose submodule (fix nginx permissions - run as root)	2026-05-23 01:21:31 -04:00
Hermes	33d1d860fb	chore: update compose submodule (fix nginx permissions)	2026-05-23 00:31:46 -04:00
Hermes	8d7afecb6e	chore: update compose submodule (merge Honcho+OpenConcho into single container)	2026-05-23 00:00:27 -04:00
Hermes	6f18071198	chore: update compose submodule (expose Honcho via Traefik + fix VECTOR_STORE_DIMENSIONS)	2026-05-22 23:54:35 -04:00
Hermes	b43c6794b3	chore: update compose submodule (fix VECTOR_STORE_DIMENSIONS empty value)	2026-05-22 23:52:24 -04:00
Hermes	8b9a144254	fix: update compose submodule for Matrix bridge deps + persistent venv Updates assets/compose submodule to 8adbbf0 (compose fix/matrix-bridge-deps). Compose commit adds: - uv pip install openai mautrix[encryption] to hermes entrypoint - Persistent venv volume at /opt/hermes/.venv - Empty-volume first-boot handling (venv recreation) This ensures Matrix bridge dependencies survive container recreation.	2026-05-20 14:36:42 -04:00
Hermes	db2bd1d157	feat: add uConsole CM5 host configuration with Reticulum mesh stack - New NixOS host 'uConsole' for ClockworkPi CM5 portable terminal - flake.nix: add nixos-uconsole and nixos-raspberrypi inputs - Imports: nixos-uconsole.nixosModules.uconsole-cm5, nixos-raspberrypi.nixosModules.raspberry-pi-5.base - Full package list: base tools, HAM radio, SDR/RF, mesh/LoRa, security tools, GPS/maps - Reticulum stack (rns 1.2.9, lxmf 0.9.8, nomadnet 1.1.1) built from PyPI via overlays/reticulum.nix - systemd services: rnsd (Reticulum daemon), kismet (Wi-Fi IDS) - Kernel modules for SDR (rtl-sdr, dvb) and USB WiFi - Follows existing host config conventions (cyt-pi as template)	2026-05-20 14:34:15 -04:00
				`@@ -1 +0,0 @@`
				`/nix/store/z86r4awsbrc5q9qhwwi757wxixcqgn31-nixos-system-uConsole-25.11.20260608.e820eb4`
				`@@ -1 +0,0 @@`
				`/nix/store/7y7rfksqcf5smz59jjixyl56bxq50j9g-nixos-system-uConsole-25.11.20260608.e820eb4`