diff --git a/.gitignore b/.gitignore
index 55f65c2..55a9817 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-result*
+result
 .stfolder
 flake.lock
 
diff --git a/flake.nix b/flake.nix
index 5d1fcde..69aedf5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -31,6 +31,7 @@
     ...
   }:
     let
+      system = "x86_64-linux";
       repoLocalPath =
         let
           fromEnv = builtins.getEnv "NIXOS_CONFIG_ROOT";
@@ -41,21 +42,26 @@
         inputs.nur.overlays.default
       ];
 
-      mkPkgs = system: import nixpkgs {
+      pkgs = import nixpkgs {
         inherit system;
         config.allowUnfree = true;
         flake.setFlakeRegistry = true;
         inherit overlays;
       };
 
-      mkPkgsUnstable = system: import nixpkgs-unstable {
+      pkgs-unstable = import nixpkgs-unstable {
         inherit system;
         config.allowUnfree = true;
         flake.setFlakeRegistry = true;
         inherit overlays;
       };
 
-      mkSharedModules = pkgs: pkgs-unstable: [
+      sharedSpecialArgs = {
+        inherit repoLocalPath pkgs-unstable;
+        repoRoot = self;
+      };
+
+      sharedModules = [
         ./nixos/modules/base.nix
         inputs.home-manager.nixosModules.home-manager
         ({ ... }: {
@@ -71,32 +77,24 @@
 
       mkHost = {
         hostName,
-        system,
         nixosModules ? [ ],
         hmModules ? [ ],
         extraModules ? [ ],
       }:
-        let
-          pkgs = mkPkgs system;
-          pkgs-unstable = mkPkgsUnstable system;
-        in
         nixpkgs.lib.nixosSystem {
           inherit system pkgs;
-          specialArgs = {
-            inherit repoLocalPath pkgs-unstable;
-            repoRoot = self;
-          };
+          specialArgs = sharedSpecialArgs;
           modules =
-            (mkSharedModules pkgs pkgs-unstable)
+            sharedModules
             ++ [ (./nixos/hosts + "/${hostName}/configuration.nix") ]
             ++ nixosModules
             ++ extraModules
             ++ [
               {
                 home-manager.users.alisceon.imports =
-                  [
+                  [ 
                     inputs.noctalia.homeModules.default
-                    ./home/profiles/base.nix
+                    ./home/profiles/base.nix 
                   ]
                   ++ hmModules;
                 home-manager.users.root.imports = [
@@ -127,7 +125,6 @@
       nixosConfigurations = {
         electra = mkHost {
           hostName = "electra";
-          system = "x86_64-linux";
           nixosModules = workstationModules;
           hmModules = workstationHomeModules ++ [
             ./home/hosts/alisceon/electra.nix
@@ -136,7 +133,6 @@
 
         tower = mkHost {
           hostName = "tower";
-          system = "x86_64-linux";
           nixosModules = workstationModules;
           hmModules = workstationHomeModules ++ [
             ./home/hosts/alisceon/tower.nix
@@ -145,7 +141,6 @@
 
         tesla-nixos = mkHost {
           hostName = "tesla-nixos";
-          system = "x86_64-linux";
           nixosModules = serverModules;
           hmModules = serverHomeModules;
           extraModules = [
@@ -156,14 +151,6 @@
 
         nuc = mkHost {
           hostName = "nuc";
-          system = "x86_64-linux";
-          nixosModules = serverModules;
-          hmModules = serverHomeModules;
-        };
-
-        alisceon-core = mkHost {
-          hostName = "alisceon-core";
-          system = "aarch64-linux";
           nixosModules = serverModules;
           hmModules = serverHomeModules;
         };
diff --git a/home/modules/programs/ssh.nix b/home/modules/programs/ssh.nix
index 79db2a9..0f44954 100644
--- a/home/modules/programs/ssh.nix
+++ b/home/modules/programs/ssh.nix
@@ -18,7 +18,7 @@
       };
       "alisceon-core" = {
         hostname = "core.alisceon.com";
-        user = "alisceon";
+        user = "opc";
       };
       "blogbox-2" = {
         hostname = "10.1.0.11";
diff --git a/lib/commands.nix b/lib/commands.nix
index 476b304..7e766f4 100644
--- a/lib/commands.nix
+++ b/lib/commands.nix
@@ -1,15 +1,6 @@
 { pkgs }:
 let
   swaymsg = "${pkgs.sway}/bin/swaymsg";
-  systemNotify = pkgs.writeShellApplication {
-    name = "system-notify";
-    runtimeInputs = [
-      pkgs.coreutils
-      pkgs.libnotify
-      pkgs.util-linux
-    ];
-    text = builtins.readFile ../util/system_notify.sh;
-  };
 in
 {
   uwsm = "${pkgs.uwsm}/bin/uwsm-app --";
@@ -18,7 +9,6 @@ in
   lock = "${pkgs.swaylock}/bin/swaylock --daemonize";
   term = "${pkgs.foot}/bin/footclient";
   notify = "${pkgs.libnotify}/bin/notify-send";
-  "system-notify" = "${systemNotify}/bin/system-notify";
   nag = "${pkgs.sway}/bin/swaynag --edge bottom";
   dmenu = "${pkgs.rofi-unwrapped}/bin/rofi";
   espanso = "${pkgs.espanso-wayland}/bin/espanso cmd";
diff --git a/nixos/hosts/alisceon-core/configuration.nix b/nixos/hosts/alisceon-core/configuration.nix
deleted file mode 100644
index 8468905..0000000
--- a/nixos/hosts/alisceon-core/configuration.nix
+++ /dev/null
@@ -1,297 +0,0 @@
-{ lib, pkgs, modulesPath, ... }:
-let
-  forgejoDomain = "git.alisceon.com";
-  forgejoRunnerTokenFile = "/var/lib/forgejo/runner_token";
-
-  fetchOciAuthorizedKeys = pkgs.writeShellApplication {
-    name = "fetch-oci-authorized-keys";
-    runtimeInputs = [
-      pkgs.coreutils
-      pkgs.curl
-    ];
-    text = ''
-      install -d -m 0700 -o alisceon -g users /home/alisceon/.ssh
-
-      if [ -s /home/alisceon/.ssh/authorized_keys ]; then
-        echo "OCI authorized_keys already present for alisceon"
-        exit 0
-      fi
-
-      curl --fail --silent --show-error --location \
-        --header "Authorization: Bearer Oracle" \
-        --output /home/alisceon/.ssh/authorized_keys \
-        http://169.254.169.254/opc/v2/instance/metadata/ssh_authorized_keys
-
-      chown alisceon:users /home/alisceon/.ssh/authorized_keys
-      chmod 0600 /home/alisceon/.ssh/authorized_keys
-    '';
-  };
-
-  generateForgejoRunnerToken = pkgs.writeShellApplication {
-    name = "generate-forgejo-runner-token";
-    runtimeInputs = [
-      pkgs.coreutils
-      pkgs.util-linux
-    ];
-    text = ''
-      token_file=${lib.escapeShellArg forgejoRunnerTokenFile}
-
-      if [ -s "$token_file" ]; then
-        chmod 0600 "$token_file"
-        chown root:root "$token_file"
-        exit 0
-      fi
-
-      install -d -m 0750 -o forgejo -g forgejo /var/lib/forgejo
-      token="$(runuser -u forgejo -- env \
-        FORGEJO_WORK_DIR=/var/lib/forgejo \
-        FORGEJO_CUSTOM=/var/lib/forgejo/custom \
-        ${lib.getExe pkgs.forgejo-lts} actions generate-runner-token)"
-
-      umask 0077
-      printf 'TOKEN=%s\n' "$token" > "$token_file"
-      chown root:root "$token_file"
-      chmod 0600 "$token_file"
-    '';
-  };
-in
-{
-  imports = [
-    "${modulesPath}/virtualisation/oci-image.nix"
-  ];
-
-  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
-
-  networking = {
-    hostName = "alisceon-core";
-    networkmanager.enable = lib.mkForce false;
-    firewall.allowedTCPPorts = [
-      22
-      80
-      443
-      24601
-    ];
-  };
-
-  boot = {
-    initrd.availableKernelModules = [
-      "virtio_pci"
-      "virtio_blk"
-      "virtio_scsi"
-      "virtio_net"
-      "xhci_pci"
-    ];
-    loader.systemd-boot.configurationLimit = lib.mkForce 3;
-  };
-
-  nix = {
-    settings = {
-      min-free = lib.mkForce (512 * 1024 * 1024);
-      max-free = lib.mkForce (2 * 1024 * 1024 * 1024);
-    };
-    gc = {
-      dates = lib.mkForce "daily";
-      options = lib.mkForce "--delete-older-than 3d";
-    };
-  };
-
-  virtualisation = {
-    docker.enable = lib.mkForce false;
-    podman = {
-      enable = true;
-      dockerSocket.enable = true;
-      autoPrune = {
-        enable = true;
-        dates = "daily";
-        flags = [ "--all" ];
-      };
-    };
-  };
-
-  users.users.alisceon.extraGroups = [ "systemd-journal" ];
-
-  security = {
-    acme = {
-      acceptTerms = true;
-      defaults.email = "acme@alisceon.com";
-    };
-    sudo-rs.wheelNeedsPassword = false;
-  };
-
-  services.openssh.settings = {
-    PasswordAuthentication = false;
-    PermitRootLogin = lib.mkForce "prohibit-password";
-  };
-
-  services.forgejo = {
-    enable = true;
-    package = pkgs.forgejo-lts;
-    database.type = "sqlite3";
-    lfs.enable = true;
-    settings = {
-      server = {
-        DOMAIN = forgejoDomain;
-        ROOT_URL = "https://${forgejoDomain}/";
-        HTTP_ADDR = "127.0.0.1";
-        HTTP_PORT = 3000;
-        SSH_DOMAIN = forgejoDomain;
-        SSH_PORT = 22;
-        DISABLE_SSH = false;
-      };
-      session.COOKIE_SECURE = true;
-      service = {
-        DISABLE_REGISTRATION = true;
-        REQUIRE_SIGNIN_VIEW = false;
-      };
-      actions.ENABLED = true;
-      repository = {
-        DEFAULT_PRIVATE = "private";
-        DISABLE_HTTP_GIT = false;
-      };
-      "cron.archive_cleanup" = {
-        ENABLED = true;
-        RUN_AT_START = true;
-        SCHEDULE = "@every 24h";
-        OLDER_THAN = "72h";
-      };
-      log.LEVEL = "Warn";
-    };
-  };
-
-  services.gitea-actions-runner = {
-    package = pkgs.forgejo-runner;
-    instances.alisceon-core-podman = {
-      enable = true;
-      name = "alisceon-core-podman";
-      url = "https://${forgejoDomain}";
-      tokenFile = forgejoRunnerTokenFile;
-      labels = [
-        "ubuntu-latest:docker://node:22-bookworm"
-        "debian-latest:docker://node:22-bookworm"
-      ];
-      settings = {
-        container = {
-          network = "host";
-          privileged = false;
-          valid_volumes = [ ];
-        };
-        cache.enabled = false;
-      };
-    };
-  };
-
-  services.nginx = {
-    enable = true;
-    recommendedGzipSettings = true;
-    recommendedOptimisation = true;
-    recommendedProxySettings = true;
-    recommendedTlsSettings = true;
-    virtualHosts = {
-      "_" = {
-        default = true;
-        rejectSSL = true;
-        extraConfig = ''
-          return 421;
-        '';
-      };
-      ${forgejoDomain} = {
-        serverName = forgejoDomain;
-        forceSSL = true;
-        enableACME = true;
-        locations."/" = {
-          proxyPass = "http://127.0.0.1:3000";
-          recommendedProxySettings = true;
-        };
-      };
-    };
-  };
-
-  services.tor = {
-    enable = true;
-    client.enable = false;
-    relay = {
-      enable = true;
-      role = "relay";
-    };
-    settings = {
-      Nickname = "alisceondotcom";
-      ORPort = 24601;
-      DataDirectory = "/var/lib/tor";
-      ExitRelay = false;
-      ExitPolicy = [ "reject *:*" ];
-      RelayBandwidthRate = "25 MBytes";
-      RelayBandwidthBurst = "25 MBytes";
-      BandwidthRate = "25 MBytes";
-      BandwidthBurst = "25 MBytes";
-      AccountingStart = "month 1 00:00";
-      AccountingMax = "8500 GBytes";
-      DirCache = true;
-      AvoidDiskWrites = 1;
-      Sandbox = false;
-    };
-  };
-
-  services.cloud-init = {
-    enable = true;
-    network.enable = true;
-    settings = {
-      datasource_list = [ "Oracle" "ConfigDrive" "NoCloud" ];
-      users = [ "default" ];
-      system_info.default_user = {
-        name = "alisceon";
-        gecos = "Alisceon";
-        groups = [ "wheel" "systemd-journal" ];
-        shell = "/run/current-system/sw/bin/xonsh";
-        lock_passwd = true;
-      };
-    };
-  };
-
-  systemd.services.fetch-oci-authorized-keys = {
-    description = "Fetch OCI metadata authorized_keys for alisceon";
-    wantedBy = [ "sshd.service" ];
-    before = [ "sshd.service" ];
-    after = [ "network-online.target" ];
-    wants = [ "network-online.target" ];
-    serviceConfig = {
-      Type = "oneshot";
-      RemainAfterExit = true;
-      StandardError = "journal+console";
-      StandardOutput = "journal+console";
-    };
-    script = lib.getExe fetchOciAuthorizedKeys;
-  };
-
-  systemd.services.fetch-ssh-keys.enable = false;
-
-  systemd.services.forgejo-runner-token = {
-    description = "Generate Forgejo runner registration token";
-    wantedBy = [ "multi-user.target" ];
-    after = [ "forgejo.service" ];
-    requires = [ "forgejo.service" ];
-    serviceConfig = {
-      Type = "oneshot";
-      RemainAfterExit = true;
-      StandardError = "journal+console";
-      StandardOutput = "journal+console";
-    };
-    script = lib.getExe generateForgejoRunnerToken;
-  };
-
-  systemd.services."gitea-runner-alisceon\\x2dcore\\x2dpodman" = {
-    after = [ "forgejo-runner-token.service" ];
-    requires = [ "forgejo-runner-token.service" ];
-  };
-
-  environment.systemPackages = with pkgs; [
-    curl
-    forgejo-lts
-    git
-    htop
-    jq
-    vim
-    wget
-  ];
-
-  system.stateVersion = lib.mkForce "25.11";
-}
diff --git a/nixos/modules/base.nix b/nixos/modules/base.nix
index c4ec01f..4abe5fe 100644
--- a/nixos/modules/base.nix
+++ b/nixos/modules/base.nix
@@ -2,15 +2,6 @@
 let
   autoUpgradeUser = "alisceon";
   flakeRef = "path:${repoLocalPath}";
-  devFlakeGarbageCollect = pkgs.writeShellApplication {
-    name = "dev-flake-garbage-collect";
-    runtimeInputs = [
-      pkgs.coreutils
-      pkgs.findutils
-      pkgs.gnugrep
-    ];
-    text = builtins.readFile ../../util/dev_flake_gc.sh;
-  };
 in
 {
   boot = {
@@ -43,34 +34,9 @@ in
     runGarbageCollection = true;
   };
 
-  systemd = {
-    services = {
-      nixos-upgrade.preStart = ''
-        ${pkgs.util-linux}/bin/runuser -u ${autoUpgradeUser} -- ${lib.getExe config.nix.package} flake update --flake ${lib.escapeShellArg flakeRef}
-      '';
-
-      dev-flake-garbage-collect = {
-        description = "Remove stale development flake caches and build symlinks";
-        wants = [ "nix-gc.service" ];
-        before = [ "nix-gc.service" ];
-        serviceConfig = {
-          Type = "oneshot";
-          ExecStart = lib.getExe devFlakeGarbageCollect;
-          Nice = 10;
-          IOSchedulingClass = "idle";
-        };
-      };
-    };
-
-    timers.dev-flake-garbage-collect = {
-      wantedBy = [ "timers.target" ];
-      timerConfig = {
-        OnCalendar = "weekly";
-        Persistent = true;
-        RandomizedDelaySec = "3h";
-      };
-    };
-  };
+  systemd.services.nixos-upgrade.preStart = ''
+    ${pkgs.util-linux}/bin/runuser -u ${autoUpgradeUser} -- ${lib.getExe config.nix.package} flake update --flake ${lib.escapeShellArg flakeRef}
+  '';
 
   nix = {
     settings = {
diff --git a/nixos/modules/profiles/workstation.nix b/nixos/modules/profiles/workstation.nix
index d39d714..c8ed2d6 100644
--- a/nixos/modules/profiles/workstation.nix
+++ b/nixos/modules/profiles/workstation.nix
@@ -1,12 +1,4 @@
-{ pkgs, pkgs-unstable, lib, ... }:
-let
-  commands = import ../../../lib/commands.nix { inherit pkgs; };
-  systemNotify = commands."system-notify";
-  notify = urgency: title: body:
-    "${systemNotify} ${lib.escapeShellArgs [ urgency title body ]}";
-  notifyFailure = title: service:
-    "${systemNotify} ${lib.escapeShellArgs [ "critical" title ]} \"${service} ended with: $SERVICE_RESULT\"";
-in
+{ pkgs, pkgs-unstable, ... }:
 {
   boot = {
     plymouth = {
@@ -19,7 +11,6 @@ in
       "udev.log_level=3"
       "systemd.show_status=auto"
     ];
-    binfmt.emulatedSystems = [ "aarch64-linux" ];
   };
 
   security.sudo.wheelNeedsPassword = false;
@@ -62,34 +53,6 @@ in
     8888
   ];
 
-  systemd.services = {
-    nixos-upgrade = {
-      preStart = lib.mkBefore ''
-        ${notify "normal" "System update started" "Updating flake inputs and preparing the NixOS switch."}
-      '';
-      postStop = ''
-        if [ "$SERVICE_RESULT" = "success" ]; then
-          ${notify "normal" "System update finished" "The automated NixOS update completed successfully."}
-        else
-          ${notifyFailure "System update failed" "nixos-upgrade.service"}
-        fi
-      '';
-    };
-
-    nix-gc = {
-      preStart = ''
-        ${notify "normal" "Garbage collection started" "Cleaning old Nix generations and unreferenced store paths."}
-      '';
-      postStop = ''
-        if [ "$SERVICE_RESULT" = "success" ]; then
-          ${notify "normal" "Garbage collection finished" "Nix store garbage collection completed successfully."}
-        else
-          ${notifyFailure "Garbage collection failed" "nix-gc.service"}
-        fi
-      '';
-    };
-  };
-
   environment = {
     systemPackages = [
       pkgs-unstable.discord
diff --git a/util/dev_flake_gc.sh b/util/dev_flake_gc.sh
deleted file mode 100644
index 5942fe1..0000000
--- a/util/dev_flake_gc.sh
+++ /dev/null
@@ -1,101 +0,0 @@
-set -o pipefail
-
-retention_days="30"
-scan_roots=(
-  /
-  /home
-  /root
-  /srv
-  /opt
-  /tmp
-  /var/tmp
-  /var/lib
-)
-
-root_seen() {
-  local candidate="$1"
-  local seen
-
-  for seen in "${seen_roots[@]}"; do
-    [ "$candidate" = "$seen" ] && return 0
-  done
-
-  return 1
-}
-
-has_recent_activity() {
-  local path="$1"
-
-  find "$path" \
-    -xdev \
-    \( -name .git -o -name .hg -o -name .svn -o -name node_modules -o -name target \) -prune \
-    -o -mindepth 1 -mtime "-$retention_days" -print -quit 2>/dev/null \
-    | grep -q .
-}
-
-is_nix_store_symlink() {
-  local link="$1"
-  local target
-
-  target="$(readlink "$link" 2>/dev/null || true)"
-  case "$target" in
-    /nix/store/*) return 0 ;;
-    *) return 1 ;;
-  esac
-}
-
-cleanup_direnv() {
-  local direnv_dir="$1"
-  local project_dir
-
-  project_dir="$(dirname "$direnv_dir")"
-
-  if [ ! -e "$project_dir/flake.nix" ] \
-    && [ ! -e "$direnv_dir/flake-profile" ] \
-    && [ ! -e "$direnv_dir/gcroots" ]; then
-    return
-  fi
-
-  if has_recent_activity "$project_dir"; then
-    return
-  fi
-
-  echo "Removing stale nix-direnv cache: $direnv_dir"
-  rm -rf --one-file-system "$direnv_dir"
-}
-
-cleanup_result_link() {
-  local link="$1"
-
-  if ! is_nix_store_symlink "$link"; then
-    return
-  fi
-
-  echo "Removing stale Nix build result symlink: $link"
-  rm -f "$link"
-}
-
-seen_roots=()
-
-for root in "${scan_roots[@]}"; do
-  [ -d "$root" ] || continue
-  root="$(readlink -f "$root")"
-  root_seen "$root" && continue
-  seen_roots+=("$root")
-
-  find "$root" \
-    -xdev \
-    \( -path /nix -o -path /proc -o -path /sys -o -path /dev -o -path /run -o -path /boot \) -prune \
-    -o -type d -name .direnv -mtime "+$retention_days" -print0 2>/dev/null \
-    | while IFS= read -r -d "" direnv_dir; do
-      cleanup_direnv "$direnv_dir"
-    done
-
-  find "$root" \
-    -xdev \
-    \( -path /nix -o -path /proc -o -path /sys -o -path /dev -o -path /run -o -path /boot \) -prune \
-    -o -type l \( -name result -o -name "result-*" \) -mtime "+$retention_days" -print0 2>/dev/null \
-    | while IFS= read -r -d "" link; do
-      cleanup_result_link "$link"
-    done
-done
diff --git a/util/system_notify.sh b/util/system_notify.sh
deleted file mode 100644
index 2c307f4..0000000
--- a/util/system_notify.sh
+++ /dev/null
@@ -1,23 +0,0 @@
-set -o pipefail
-
-target_user="${SYSTEM_NOTIFY_USER:-alisceon}"
-urgency="${1:-normal}"
-title="${2:-System task}"
-body="${3:-}"
-
-uid="$(id -u "$target_user" 2>/dev/null || true)"
-[ -n "$uid" ] || exit 0
-
-runtime_dir="/run/user/$uid"
-bus="$runtime_dir/bus"
-[ -S "$bus" ] || exit 0
-
-runuser -u "$target_user" -- env \
-  XDG_RUNTIME_DIR="$runtime_dir" \
-  DBUS_SESSION_BUS_ADDRESS="unix:path=$bus" \
-  notify-send \
-    --app-name="NixOS maintenance" \
-    --urgency="$urgency" \
-    "$title" \
-    "$body" \
-  || exit 0