diff --git a/config/claude/notify.sh b/config/claude/notify.sh
index 15415d5fe..70a4f41b1 100644
--- a/config/claude/notify.sh
+++ b/config/claude/notify.sh
@@ -1,8 +1,7 @@
 #!/usr/bin/env bash
 
-# Claude Code Local Notification Script
-# Sends macOS notifications via osascript
-# Skips if Pushover is configured (to avoid duplicate notifications)
+# Claude Code local notification script.
+# Uses the shared local notifier and skips local popups when Pushover is configured.
 
 # Source credentials to check if Pushover is configured
 if [ -z "$PUSHOVER_API_TOKEN" ] || [ -z "$PUSHOVER_USER_KEY" ]; then
@@ -22,14 +21,22 @@ fi
 # Read JSON input from stdin
 input=$(cat)
 
-# Function to send local macOS notification
+# Function to send a local notification on the active platform
 notify() {
   local message="$1"
   local sound="${2:-Sonar}"
+  local notifier
 
   [ -z "$message" ] && return
 
-  osascript -e "display notification \"${message}\" with title \"Claude Code\" sound name \"${sound}\"" 2>/dev/null
+  notifier="$(command -v notify-local 2>/dev/null || true)"
+  if [ -z "$notifier" ] && [ -x "$HOME/.local/scripts/notify-local" ]; then
+    notifier="$HOME/.local/scripts/notify-local"
+  fi
+
+  if [ -n "$notifier" ]; then
+    "$notifier" "Claude Code" "$message" "$sound"
+  fi
 }
 
 # Handle Notification hook
diff --git a/config/codex/config.toml b/config/codex/config.toml
index 3cd761845..318b6e5da 100644
--- a/config/codex/config.toml
+++ b/config/codex/config.toml
@@ -1,7 +1,7 @@
 notify = [
   "bash",
   "-lc",
-  "JSON=\"$1\"; LAST_MESSAGE=$(echo \"$JSON\" | jq -r '.\"last-assistant-message\" // \"Codex task completed\"'); osascript -e \"display notification \\\"$LAST_MESSAGE\\\" with title \\\"Codex\\\"\"",
+  "JSON=\"$1\"; LAST_MESSAGE=$(echo \"$JSON\" | jq -r '.\"last-assistant-message\" // \"Codex task completed\"'); \"$HOME/.local/scripts/notify-local\" \"Codex\" \"$LAST_MESSAGE\"",
   "notify",
 ]
 
diff --git a/config/codex/config.tpl.toml b/config/codex/config.tpl.toml
index ff5f83b0a..386866760 100644
--- a/config/codex/config.tpl.toml
+++ b/config/codex/config.tpl.toml
@@ -1,7 +1,7 @@
 notify = [
   "bash",
   "-lc",
-  "JSON=\"$1\"; LAST_MESSAGE=$(echo \"$JSON\" | jq -r '.\"last-assistant-message\" // \"Codex task completed\"'); osascript -e \"display notification \\\"$LAST_MESSAGE\\\" with title \\\"Codex\\\"\"",
+  "JSON=\"$1\"; LAST_MESSAGE=$(echo \"$JSON\" | jq -r '.\"last-assistant-message\" // \"Codex task completed\"'); \"$HOME/.local/scripts/notify-local\" \"Codex\" \"$LAST_MESSAGE\"",
   "notify",
 ]
 
diff --git a/config/ghostty/config b/config/ghostty/config
index e2c0c1e30..a74eb29b4 100644
--- a/config/ghostty/config
+++ b/config/ghostty/config
@@ -3,8 +3,7 @@
 #
 
 auto-update-channel = tip
-# theme = dark:Dracula,light:Catppuccin Latte
-theme = Dracula
+theme = dark:Dracula Custom,light:Catppuccin Latte Custom
 background-opacity = 0.8
 confirm-close-surface = true
 macos-option-as-alt = true
@@ -47,9 +46,5 @@ keybind = ctrl+shift+z=toggle_split_zoom
 keybind = ctrl+shift+e=equalize_splits
 keybind = ctrl+shift+w=close_surface
 
-# Split border styling
-split-divider-color = #88c0d0
-
 # Active panel highlighting (dim unfocused splits)
 unfocused-split-opacity = 0.7
-unfocused-split-fill = #1e1e2e
diff --git a/config/ghostty/default.nix b/config/ghostty/default.nix
index b8d9bb528..56498a512 100644
--- a/config/ghostty/default.nix
+++ b/config/ghostty/default.nix
@@ -8,4 +8,10 @@ in
   xdg.configFile."ghostty/config" = {
     text = configText;
   };
+  xdg.configFile."ghostty/themes/Dracula Custom" = {
+    source = ./themes + "/Dracula Custom";
+  };
+  xdg.configFile."ghostty/themes/Catppuccin Latte Custom" = {
+    source = ./themes + "/Catppuccin Latte Custom";
+  };
 }
diff --git a/config/ghostty/themes/Catppuccin Latte Custom b/config/ghostty/themes/Catppuccin Latte Custom
new file mode 100644
index 000000000..ee523dff0
--- /dev/null
+++ b/config/ghostty/themes/Catppuccin Latte Custom	
@@ -0,0 +1,24 @@
+palette = 0=#5c5f77
+palette = 1=#d20f39
+palette = 2=#40a02b
+palette = 3=#df8e1d
+palette = 4=#1e66f5
+palette = 5=#ea76cb
+palette = 6=#179299
+palette = 7=#acb0be
+palette = 8=#6c6f85
+palette = 9=#de293e
+palette = 10=#49af3d
+palette = 11=#eea02d
+palette = 12=#456eff
+palette = 13=#fe85d8
+palette = 14=#2d9fa8
+palette = 15=#bcc0cc
+background = #eff1f5
+foreground = #4c4f69
+cursor-color = #dc8a78
+cursor-text = #eff1f5
+selection-background = #acb0be
+selection-foreground = #4c4f69
+unfocused-split-fill = #dce0e8
+split-divider-color = #7287fd
diff --git a/config/ghostty/themes/Dracula Custom b/config/ghostty/themes/Dracula Custom
new file mode 100644
index 000000000..0e059b26d
--- /dev/null
+++ b/config/ghostty/themes/Dracula Custom	
@@ -0,0 +1,24 @@
+palette = 0=#21222c
+palette = 1=#ff5555
+palette = 2=#50fa7b
+palette = 3=#f1fa8c
+palette = 4=#bd93f9
+palette = 5=#ff79c6
+palette = 6=#8be9fd
+palette = 7=#f8f8f2
+palette = 8=#6272a4
+palette = 9=#ff6e6e
+palette = 10=#69ff94
+palette = 11=#ffffa5
+palette = 12=#d6acff
+palette = 13=#ff92df
+palette = 14=#a4ffff
+palette = 15=#ffffff
+background = #282a36
+foreground = #f8f8f2
+cursor-color = #f8f8f2
+cursor-text = #282a36
+selection-background = #44475a
+selection-foreground = #ffffff
+unfocused-split-fill = #1e1e2e
+split-divider-color = #88c0d0
diff --git a/config/gtk/default.nix b/config/gtk/default.nix
index e0aac758a..0f25b8e6c 100644
--- a/config/gtk/default.nix
+++ b/config/gtk/default.nix
@@ -8,7 +8,7 @@
   gtk = lib.mkIf pkgs.stdenv.isLinux {
     enable = true;
     theme = {
-      name = "Adwaita-dark";
+      name = "Adwaita";
       package = pkgs.gnome-themes-extra;
     };
     iconTheme = {
@@ -19,17 +19,5 @@
       name = "Adwaita";
       size = 24;
     };
-    gtk3.extraConfig = {
-      gtk-application-prefer-dark-theme = 1;
-    };
-    gtk4.extraConfig = {
-      gtk-application-prefer-dark-theme = 1;
-    };
-  };
-
-  dconf.settings = lib.mkIf pkgs.stdenv.isLinux {
-    "org/gnome/desktop/interface" = {
-      color-scheme = "prefer-dark";
-    };
   };
 }
diff --git a/config/hyprland/hyprland.conf b/config/hyprland/hyprland.conf
index f97b22f23..8fe606529 100644
--- a/config/hyprland/hyprland.conf
+++ b/config/hyprland/hyprland.conf
@@ -25,7 +25,6 @@ env = XCURSOR_THEME,Adwaita
 env = XCURSOR_SIZE,24
 env = HYPRCURSOR_SIZE,24
 env = HYPRCURSOR_THEME,Adwaita
-env = GTK_THEME,Adwaita:dark
 env = GDK_SCALE,1.5
 env = QT_AUTO_SCREEN_SCALE_FACTOR,1
 env = QT_QPA_PLATFORM,wayland
diff --git a/home-manager/modules/default.nix b/home-manager/modules/default.nix
index f80fe58a4..9ee58df2e 100644
--- a/home-manager/modules/default.nix
+++ b/home-manager/modules/default.nix
@@ -3,6 +3,7 @@
   ./cargo-globals
   ./openclaw
   ./local-binaries
+  ./local-scripts
   ./npm-globals
   ./tailscale
   ./uv-globals
diff --git a/home-manager/modules/local-scripts/clipboard-copy.sh b/home-manager/modules/local-scripts/clipboard-copy.sh
new file mode 100755
index 000000000..bf230b52a
--- /dev/null
+++ b/home-manager/modules/local-scripts/clipboard-copy.sh
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+if command -v pbcopy >/dev/null 2>&1; then
+  exec pbcopy
+fi
+
+if [[ -n ${WAYLAND_DISPLAY:-} ]] && command -v wl-copy >/dev/null 2>&1; then
+  exec wl-copy
+fi
+
+if command -v xclip >/dev/null 2>&1; then
+  exec xclip -selection clipboard
+fi
+
+if command -v xsel >/dev/null 2>&1; then
+  exec xsel --clipboard --input
+fi
+
+printf 'No clipboard backend available\n' >&2
+exit 1
diff --git a/home-manager/modules/local-scripts/default.nix b/home-manager/modules/local-scripts/default.nix
new file mode 100644
index 000000000..59b621648
--- /dev/null
+++ b/home-manager/modules/local-scripts/default.nix
@@ -0,0 +1,13 @@
+{ ... }:
+{
+  home.file.".local/scripts/clipboard-copy" = {
+    executable = true;
+    force = true;
+    source = ./clipboard-copy.sh;
+  };
+  home.file.".local/scripts/notify-local" = {
+    executable = true;
+    force = true;
+    source = ./notify-local.sh;
+  };
+}
diff --git a/home-manager/modules/local-scripts/notify-local.sh b/home-manager/modules/local-scripts/notify-local.sh
new file mode 100755
index 000000000..babc65053
--- /dev/null
+++ b/home-manager/modules/local-scripts/notify-local.sh
@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+title="${1:-Notification}"
+message="${2:-}"
+sound="${3:-}"
+
+if [[ -z $message ]]; then
+  exit 0
+fi
+
+title="${title//$'\n'/ }"
+message="${message//$'\n'/ }"
+sound="${sound//$'\n'/ }"
+
+escape_applescript() {
+  local value="$1"
+
+  value="${value//\\/\\\\}"
+  value="${value//\"/\\\"}"
+
+  printf '%s' "$value"
+}
+
+if command -v osascript >/dev/null 2>&1; then
+  escaped_title="$(escape_applescript "$title")"
+  escaped_message="$(escape_applescript "$message")"
+
+  if [[ -n $sound ]]; then
+    escaped_sound="$(escape_applescript "$sound")"
+    osascript -e "display notification \"$escaped_message\" with title \"$escaped_title\" sound name \"$escaped_sound\"" >/dev/null 2>&1 || true
+  else
+    osascript -e "display notification \"$escaped_message\" with title \"$escaped_title\"" >/dev/null 2>&1 || true
+  fi
+
+  exit 0
+fi
+
+if command -v notify-send >/dev/null 2>&1; then
+  notify-send "$title" "$message" >/dev/null 2>&1 || true
+  exit 0
+fi
+
+if command -v terminal-notifier >/dev/null 2>&1; then
+  terminal-notifier -title "$title" -message "$message" >/dev/null 2>&1 || true
+  exit 0
+fi
+
+exit 0
diff --git a/home-manager/programs/bash/default.nix b/home-manager/programs/bash/default.nix
index 8c9dbf240..29ece8299 100644
--- a/home-manager/programs/bash/default.nix
+++ b/home-manager/programs/bash/default.nix
@@ -63,6 +63,7 @@
       export PATH="$HOME/.nix-profile/bin:$PATH"
       export PATH="$HOME/.cargo/bin:$PATH"
       export PATH="$HOME/.local/bin:$PATH"
+      export PATH="$HOME/.local/scripts:$PATH"
       export PATH="$HOME/.bun/bin:$PATH"
       export PATH="/opt/homebrew/opt/postgresql@18/bin:$PATH"
       export PATH="/opt/homebrew/bin:$PATH"
diff --git a/home-manager/programs/fish/default.nix b/home-manager/programs/fish/default.nix
index f9037a491..966588760 100644
--- a/home-manager/programs/fish/default.nix
+++ b/home-manager/programs/fish/default.nix
@@ -39,6 +39,7 @@
       fish_add_path -p -m ~/go/bin
       fish_add_path -p -m ~/.cargo/bin
       fish_add_path -p -m ~/.local/bin
+      fish_add_path -p -m ~/.local/scripts
       fish_add_path -p -m ~/.bun/bin
       fish_add_path -p -m /opt/homebrew/opt/postgresql@18/bin
       fish_add_path -p -m /opt/homebrew/bin
@@ -60,6 +61,7 @@
       fish_add_path -p -m ~/go/bin
       fish_add_path -p -m ~/.cargo/bin
       fish_add_path -p -m ~/.local/bin
+      fish_add_path -p -m ~/.local/scripts
       fish_add_path -p -m ~/.bun/bin
       fish_add_path -p -m /opt/homebrew/opt/postgresql@18/bin
       fish_add_path -p -m /opt/homebrew/bin
diff --git a/home-manager/programs/tmux/tmux.conf b/home-manager/programs/tmux/tmux.conf
index ce9cdbb11..0afbac186 100644
--- a/home-manager/programs/tmux/tmux.conf
+++ b/home-manager/programs/tmux/tmux.conf
@@ -37,7 +37,7 @@ set-option -g repeat-time 1000
 
 # Clipboard
 set -g set-clipboard on
-set -g @clipboard_cmd "command -v pbcopy >/dev/null 2>&1 && pbcopy || { [ -n \"$WAYLAND_DISPLAY\" ] && wl-copy || xclip -selection clipboard; }"
+set -g @clipboard_cmd "~/.local/scripts/clipboard-copy"
 
 # Status bar
 set -g status "on"
diff --git a/home-manager/programs/zsh/default.nix b/home-manager/programs/zsh/default.nix
index 9ad99ea8a..d72458685 100644
--- a/home-manager/programs/zsh/default.nix
+++ b/home-manager/programs/zsh/default.nix
@@ -56,6 +56,7 @@
       export PATH="$HOME/.nix-profile/bin:$PATH"
       export PATH="$HOME/.cargo/bin:$PATH"
       export PATH="$HOME/.local/bin:$PATH"
+      export PATH="$HOME/.local/scripts:$PATH"
       export PATH="$HOME/.bun/bin:$PATH"
       export PATH="/opt/homebrew/opt/postgresql@18/bin:$PATH"
       export PATH="/opt/homebrew/bin:$PATH"
diff --git a/home-manager/services/darkman/dark-mode.sh b/home-manager/services/darkman/dark-mode.sh
new file mode 100644
index 000000000..dc7ccbb08
--- /dev/null
+++ b/home-manager/services/darkman/dark-mode.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+@dconf@ write /org/gnome/desktop/interface/color-scheme "'prefer-dark'"
+@dconf@ write /org/gnome/desktop/interface/gtk-theme "'Adwaita-dark'"
diff --git a/home-manager/services/darkman/default.nix b/home-manager/services/darkman/default.nix
new file mode 100644
index 000000000..9aa401d6e
--- /dev/null
+++ b/home-manager/services/darkman/default.nix
@@ -0,0 +1,20 @@
+{ pkgs, ... }:
+let
+  inherit (pkgs) lib;
+  dconf = "${pkgs.dconf}/bin/dconf";
+  readScript = file: builtins.replaceStrings [ "@dconf@" ] [ dconf ] (builtins.readFile file);
+in
+{
+  services.darkman = lib.mkIf pkgs.stdenv.isLinux {
+    enable = true;
+    settings = {
+      usegeoclue = true;
+    };
+    darkModeScripts = {
+      gtk-theme = readScript ./dark-mode.sh;
+    };
+    lightModeScripts = {
+      gtk-theme = readScript ./light-mode.sh;
+    };
+  };
+}
diff --git a/home-manager/services/darkman/light-mode.sh b/home-manager/services/darkman/light-mode.sh
new file mode 100644
index 000000000..5f4ce7f1e
--- /dev/null
+++ b/home-manager/services/darkman/light-mode.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+@dconf@ write /org/gnome/desktop/interface/color-scheme "'prefer-light'"
+@dconf@ write /org/gnome/desktop/interface/gtk-theme "'Adwaita'"
diff --git a/home-manager/services/default.nix b/home-manager/services/default.nix
index d86314376..e6b6d7223 100644
--- a/home-manager/services/default.nix
+++ b/home-manager/services/default.nix
@@ -8,6 +8,7 @@ let
   brewUpgrader = import ./brew-upgrader { inherit pkgs; };
   cliproxyapi = import ./cliproxyapi;
   codeSyncer = import ./code-syncer { inherit pkgs; };
+  darkman = import ./darkman { inherit pkgs; };
   docker = import ./docker { inherit lib pkgs; };
   dockerPostgres = import ./docker-postgres { inherit pkgs; };
   dotfilesUpdater = import ./dotfiles-updater { inherit pkgs; };
@@ -23,6 +24,7 @@ in
   brewUpgrader
   cliproxyapi
   codeSyncer
+  darkman
   docker
   dockerPostgres
   dotfilesUpdater
diff --git a/named-hosts/matic/default.nix b/named-hosts/matic/default.nix
index 00eec5d90..9e3f3fdf1 100644
--- a/named-hosts/matic/default.nix
+++ b/named-hosts/matic/default.nix
@@ -315,7 +315,10 @@ inputs.nixpkgs.lib.nixosSystem {
                 "hyprland"
                 "gtk"
               ];
-              "org.freedesktop.impl.portal.Settings" = [ "gtk" ];
+              "org.freedesktop.impl.portal.Settings" = [
+                "darkman"
+                "gtk"
+              ];
             };
           };
         };
diff --git a/spec/clipboard_copy_spec.sh b/spec/clipboard_copy_spec.sh
new file mode 100644
index 000000000..1f010415d
--- /dev/null
+++ b/spec/clipboard_copy_spec.sh
@@ -0,0 +1,97 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2329,SC2016
+
+Describe 'clipboard-copy.sh'
+SCRIPT="$PWD/home-manager/modules/local-scripts/clipboard-copy.sh"
+
+Describe 'when pbcopy is available'
+setup() {
+  mock_bin_setup pbcopy
+}
+cleanup() {
+  mock_bin_cleanup
+}
+Before 'setup'
+After 'cleanup'
+
+It 'uses pbcopy'
+When run bash "$SCRIPT" </dev/null
+The status should be success
+End
+End
+
+Describe 'when wl-copy is available on Wayland'
+setup() {
+  mock_bin_setup wl-copy
+  export WAYLAND_DISPLAY=wayland-0
+}
+cleanup() {
+  mock_bin_cleanup
+  unset WAYLAND_DISPLAY
+}
+Before 'setup'
+After 'cleanup'
+
+It 'uses wl-copy'
+When run bash "$SCRIPT" </dev/null
+The status should be success
+End
+End
+
+Describe 'when xclip is available'
+setup() {
+  mock_bin_setup xclip
+}
+cleanup() {
+  mock_bin_cleanup
+}
+Before 'setup'
+After 'cleanup'
+
+It 'uses xclip'
+When run bash "$SCRIPT" </dev/null
+The status should be success
+End
+End
+
+Describe 'when xsel is available'
+setup() {
+  mock_bin_setup xsel
+}
+cleanup() {
+  mock_bin_cleanup
+}
+Before 'setup'
+After 'cleanup'
+
+It 'uses xsel'
+When run bash "$SCRIPT" </dev/null
+The status should be success
+End
+End
+
+Describe 'when no clipboard backend is available'
+setup() {
+  MOCK_BIN="$(mktemp -d)"
+  MOCK_ORIGINAL_PATH="${PATH:-}"
+  # Keep bash on PATH but nothing else
+  local bash_dir
+  bash_dir="$(dirname "$(command -v bash)")"
+  export PATH="$MOCK_BIN:$bash_dir"
+  export MOCK_BIN MOCK_ORIGINAL_PATH
+}
+cleanup() {
+  export PATH="$MOCK_ORIGINAL_PATH"
+  rm -rf "$MOCK_BIN"
+  unset MOCK_BIN MOCK_ORIGINAL_PATH
+}
+Before 'setup'
+After 'cleanup'
+
+It 'exits with error'
+When run bash "$SCRIPT" </dev/null
+The status should be failure
+The stderr should include 'No clipboard backend available'
+End
+End
+End
diff --git a/spec/coverage_spec.sh b/spec/coverage_spec.sh
index 85a9a14f1..080c41aea 100644
--- a/spec/coverage_spec.sh
+++ b/spec/coverage_spec.sh
@@ -180,6 +180,14 @@ It 'has spec file for nix-darwin/services/pmset-battery-policy/power-policy.sh'
 The path "spec/pmset_battery_policy_spec.sh" should be exist
 End
 
+It 'has spec file for home-manager/services/darkman/dark-mode.sh'
+The path "spec/darkman_spec.sh" should be exist
+End
+
+It 'has spec file for home-manager/services/darkman/light-mode.sh'
+The path "spec/darkman_spec.sh" should be exist
+End
+
 End
 
 Describe 'fish shortcut declarations'
@@ -229,6 +237,8 @@ config/hyprland/scripts/toggle-terminal.sh
 config/openclaw/hydrate.sh
 home-manager/modules/cargo-globals/install-cargo-globals.sh
 home-manager/modules/local-binaries/sync-local-binaries.sh
+home-manager/modules/local-scripts/clipboard-copy.sh
+home-manager/modules/local-scripts/notify-local.sh
 home-manager/modules/npm-globals/install-npm-globals.sh
 home-manager/modules/uv-globals/install-uv-globals.sh
 home-manager/modules/yek/install-yek-shim.sh
@@ -245,6 +255,8 @@ home-manager/services/cliproxyapi/scripts/hydrate.sh
 home-manager/services/cliproxyapi/scripts/start.sh
 home-manager/services/cliproxyapi/scripts/wrapper.sh
 home-manager/services/code-syncer/sync.sh
+home-manager/services/darkman/dark-mode.sh
+home-manager/services/darkman/light-mode.sh
 home-manager/services/docker-postgres/start-postgres-wrapper.sh
 home-manager/services/docker-postgres/start-postgres.sh
 home-manager/services/docker/docker-setup.sh
diff --git a/spec/darkman_spec.sh b/spec/darkman_spec.sh
new file mode 100644
index 000000000..4fd9bc8c0
--- /dev/null
+++ b/spec/darkman_spec.sh
@@ -0,0 +1,83 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2329
+
+Describe 'darkman scripts'
+
+Describe 'dark-mode.sh'
+DARK_SCRIPT="$PWD/home-manager/services/darkman/dark-mode.sh"
+
+It 'has a bash shebang'
+When run bash -c "head -1 '$DARK_SCRIPT'"
+The output should include '#!/usr/bin/env bash'
+End
+
+It 'uses strict mode'
+When run bash -c "grep 'set -euo pipefail' '$DARK_SCRIPT'"
+The output should include 'set -euo pipefail'
+End
+
+It 'sets color-scheme to prefer-dark'
+When run bash -c "cat '$DARK_SCRIPT'"
+The output should include "prefer-dark"
+End
+
+It 'sets gtk-theme to Adwaita-dark'
+When run bash -c "cat '$DARK_SCRIPT'"
+The output should include "Adwaita-dark"
+End
+
+It 'uses @dconf@ placeholder for Nix substitution'
+When run bash -c "grep -c '@dconf@ write' '$DARK_SCRIPT'"
+The output should eq '2'
+End
+End
+
+Describe 'light-mode.sh'
+LIGHT_SCRIPT="$PWD/home-manager/services/darkman/light-mode.sh"
+
+It 'has a bash shebang'
+When run bash -c "head -1 '$LIGHT_SCRIPT'"
+The output should include '#!/usr/bin/env bash'
+End
+
+It 'uses strict mode'
+When run bash -c "grep 'set -euo pipefail' '$LIGHT_SCRIPT'"
+The output should include 'set -euo pipefail'
+End
+
+It 'sets color-scheme to prefer-light'
+When run bash -c "cat '$LIGHT_SCRIPT'"
+The output should include "prefer-light"
+End
+
+It 'sets gtk-theme to Adwaita'
+When run bash -c "cat '$LIGHT_SCRIPT'"
+The output should include "Adwaita"
+End
+
+It 'uses @dconf@ placeholder for Nix substitution'
+When run bash -c "grep -c '@dconf@ write' '$LIGHT_SCRIPT'"
+The output should eq '2'
+End
+End
+
+Describe 'default.nix'
+NIX_FILE="$PWD/home-manager/services/darkman/default.nix"
+
+It 'substitutes @dconf@ with pkgs.dconf path'
+When run bash -c "cat '$NIX_FILE'"
+The output should include 'replaceStrings [ "@dconf@" ] [ dconf ]'
+End
+
+It 'references dark-mode.sh'
+When run bash -c "cat '$NIX_FILE'"
+The output should include './dark-mode.sh'
+End
+
+It 'references light-mode.sh'
+When run bash -c "cat '$NIX_FILE'"
+The output should include './light-mode.sh'
+End
+End
+
+End
diff --git a/spec/notify_local_spec.sh b/spec/notify_local_spec.sh
new file mode 100644
index 000000000..9da4c3bae
--- /dev/null
+++ b/spec/notify_local_spec.sh
@@ -0,0 +1,128 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2329,SC2016
+
+Describe 'notify-local.sh'
+SCRIPT="$PWD/home-manager/modules/local-scripts/notify-local.sh"
+
+Describe 'when message is empty'
+It 'exits 0 without sending notification'
+When run bash "$SCRIPT" "Title"
+The status should be success
+End
+
+It 'exits 0 with no arguments'
+When run bash "$SCRIPT"
+The status should be success
+End
+End
+
+Describe 'with osascript available'
+setup() {
+  mock_bin_setup osascript
+}
+cleanup() {
+  mock_bin_cleanup
+}
+Before 'setup'
+After 'cleanup'
+
+It 'sends notification with title and message'
+When run bash -c 'bash '"$SCRIPT"' "My Title" "Hello world"; cat "$MOCK_LOG"'
+The status should be success
+The output should include 'display notification'
+The output should include 'My Title'
+The output should include 'Hello world'
+End
+
+It 'sends notification with sound'
+When run bash -c 'bash '"$SCRIPT"' "Alert" "Something happened" "Basso"; cat "$MOCK_LOG"'
+The status should be success
+The output should include 'display notification'
+The output should include 'sound name "Basso"'
+End
+
+It 'sends notification without sound when not specified'
+When run bash -c 'bash '"$SCRIPT"' "Alert" "Something happened"; cat "$MOCK_LOG"'
+The status should be success
+The output should include 'display notification'
+The output should not include 'sound name'
+End
+End
+
+Describe 'with notify-send available (no osascript)'
+setup() {
+  mock_bin_setup notify-send
+  # Hide osascript so notify-send path is taken
+  if command -v osascript >/dev/null 2>&1; then
+    local bash_dir cat_dir printf_dir
+    bash_dir="$(dirname "$(command -v bash)")"
+    cat_dir="$(dirname "$(command -v cat)")"
+    printf_dir="$(dirname "$(command -v printf)")"
+    export PATH="$MOCK_BIN:$bash_dir:$cat_dir:$printf_dir"
+  fi
+}
+cleanup() {
+  mock_bin_cleanup
+}
+Before 'setup'
+After 'cleanup'
+
+It 'uses notify-send'
+When run bash -c 'bash '"$SCRIPT"' "Title" "Message"; cat "$MOCK_LOG"'
+The status should be success
+The output should include 'notify-send'
+The output should include 'Title'
+The output should include 'Message'
+End
+End
+
+Describe 'with terminal-notifier available (no osascript or notify-send)'
+setup() {
+  mock_bin_setup terminal-notifier
+  # Hide osascript so terminal-notifier path is taken
+  if command -v osascript >/dev/null 2>&1; then
+    local bash_dir cat_dir printf_dir
+    bash_dir="$(dirname "$(command -v bash)")"
+    cat_dir="$(dirname "$(command -v cat)")"
+    printf_dir="$(dirname "$(command -v printf)")"
+    export PATH="$MOCK_BIN:$bash_dir:$cat_dir:$printf_dir"
+  fi
+}
+cleanup() {
+  mock_bin_cleanup
+}
+Before 'setup'
+After 'cleanup'
+
+It 'uses terminal-notifier'
+When run bash -c 'bash '"$SCRIPT"' "Title" "Message"; cat "$MOCK_LOG"'
+The status should be success
+The output should include 'terminal-notifier'
+The output should include 'Title'
+The output should include 'Message'
+End
+End
+
+Describe 'with no notification backend'
+setup() {
+  MOCK_BIN="$(mktemp -d)"
+  MOCK_ORIGINAL_PATH="${PATH:-}"
+  local bash_dir
+  bash_dir="$(dirname "$(command -v bash)")"
+  export PATH="$MOCK_BIN:$bash_dir"
+  export MOCK_BIN MOCK_ORIGINAL_PATH
+}
+cleanup() {
+  export PATH="$MOCK_ORIGINAL_PATH"
+  rm -rf "$MOCK_BIN"
+  unset MOCK_BIN MOCK_ORIGINAL_PATH
+}
+Before 'setup'
+After 'cleanup'
+
+It 'exits 0 silently'
+When run bash "$SCRIPT" "Title" "Message"
+The status should be success
+End
+End
+End
diff --git a/spec/notify_spec.sh b/spec/notify_spec.sh
index bb3a66e96..c773edd22 100644
--- a/spec/notify_spec.sh
+++ b/spec/notify_spec.sh
@@ -20,7 +20,7 @@ End
 
 Describe 'Pushover configured with .env present'
 setup() {
-  mock_bin_setup osascript
+  mock_bin_setup notify-local
   TEMP_HOME=$(mktemp -d)
   mkdir -p "$TEMP_HOME/dotfiles"
   cat >"$TEMP_HOME/dotfiles/.env" <<'ENV'
@@ -45,7 +45,7 @@ End
 
 Describe 'Notification hook (no Pushover)'
 setup() {
-  mock_bin_setup osascript
+  mock_bin_setup notify-local
 
   # Unset Pushover credentials to ensure clean test environment
   unset PUSHOVER_API_TOKEN
@@ -73,13 +73,13 @@ It 'sends Basso notification for permission request'
 When run bash -c 'echo "{\"message\": \"Claude needs your permission to use Bash\"}" | env HOME=/nonexistent bash '"$SCRIPT"'; cat "$MOCK_LOG"'
 The status should be success
 The output should include 'Bash permission required'
-The output should include 'sound name "Basso"'
+The output should include 'Basso'
 End
 End
 
 Describe 'when credentials come from HOME/dotfiles/.env'
 setup() {
-  mock_bin_setup osascript
+  mock_bin_setup notify-local
   TEMP_HOME=$(mktemp -d)
   mkdir -p "$TEMP_HOME/dotfiles"
   cat >"$TEMP_HOME/dotfiles/.env" <<'ENV'
@@ -106,7 +106,7 @@ End
 
 Describe 'credential sourcing edge cases'
 setup() {
-  mock_bin_setup osascript
+  mock_bin_setup notify-local
   TEMP_HOME=$(mktemp -d)
   mkdir -p "$TEMP_HOME/dotfiles"
 
@@ -135,7 +135,8 @@ PUSHOVER_API_TOKEN=only_token
 ENV
 When run bash -c 'echo "{\"message\": \"Hello\"}" | env HOME="'"$TEMP_HOME"'" bash '"$SCRIPT"'; cat "$MOCK_LOG"'
 The status should be success
-The output should include 'display notification'
+The output should include 'Claude Code'
+The output should include 'Hello'
 End
 
 It 'ignores .env stderr and still sends local notification on source error'
@@ -144,13 +145,14 @@ this is not valid bash
 ENV
 When run bash -c 'echo "{\"message\": \"Hello\"}" | env HOME="'"$TEMP_HOME"'" bash '"$SCRIPT"'; cat "$MOCK_LOG"'
 The status should be success
-The output should include 'display notification'
+The output should include 'Claude Code'
+The output should include 'Hello'
 End
 End
 
 Describe 'SessionEnd hook (no Pushover)'
 setup() {
-  mock_bin_setup osascript
+  mock_bin_setup notify-local
 
   # Unset Pushover credentials to ensure clean test environment
   unset PUSHOVER_API_TOKEN
@@ -171,7 +173,7 @@ End
 
 Describe 'other hooks (no Pushover)'
 setup() {
-  mock_bin_setup osascript
+  mock_bin_setup notify-local
   TEMP_HOME=$(mktemp -d)
 
   unset PUSHOVER_API_TOKEN
@@ -206,7 +208,7 @@ It 'warns on risky PreToolUse Bash command'
 When run bash -c 'echo "{\"tool\": {\"name\": \"Bash\", \"input\": \"rm -rf /\"}}" | env HOME=/nonexistent bash '"$SCRIPT"'; cat "$MOCK_LOG"'
 The status should be success
 The output should include 'Risky: rm -rf /'
-The output should include 'sound name "Basso"'
+The output should include 'Basso'
 End
 
 It 'does not warn on PreToolUse non-Bash tool'