create shared niri config, refactor generic feature modules

modules/hosts/kitagawa/kitagawa.nix

@@ -30,6 +30,7 @@
 
       applications = {
         gui = {
+          nautilus.enable = true;
           kitty.enable = true;
           vscode.enable = true;
           equibop.enable = true;

modules/hosts/takamaki/takamaki.nix

@@ -31,8 +31,8 @@
     };
 
     components = {
-      windowManagers = "niri";
-      shells = "noctalia";
+      windowManagers = [ "biri" ];
+      shells = [ "noctalia" ];
     };
 
     features = {
@@ -67,15 +67,19 @@
               theme = "comfy";
             };
           };
+          thunderbird = {
+            enable = true;
+          };
         };
 
         extraPackages = with pkgs; [
           nix-init
           github-desktop
+          signal-desktop
         ];
 
         shellScripts = let 
-          mkBrightnessScript = direction: ''
+          mkBrightnessScript = direction: scriptName: ''
             LOOP_COUNTER=0
             DEVICE=$1
             PRETTY_NAME=$(sudo ddccontrol dev:$DEVICE 2>&1 >/dev/null | grep -oP "/usr/share/ddccontrol-db/monitor/\K.+\.xml" | sed 's/.xml//')
@@ -88,7 +92,7 @@
               LOOP_COUNTER=$(($LOOP_COUNTER + 1))
             done
 
-            noctalia msg notification-show "Set brightness to $WRITTEN for display $PRETTY_NAME"
+            notify-send -e -a "${scriptName}" "Set brightness to $WRITTEN for display $PRETTY_NAME"
           '';
         in {
           switch-os = ''
@@ -109,14 +113,16 @@
 
             if [ "$bypass_value" = "1" ]; then
               easyeffects -b 2
+              notify-send -e -a "toggle-easyeffects script" "Easy Effects enabled"
             else
               easyeffects -b 1
+              notify-send -e -a "toggle-easyeffects script" "Easy Effects disabled"
             fi
           '';
 
-          increase-brightness = mkBrightnessScript "+";
+          increase-brightness = mkBrightnessScript "+" "increase-brightness script";
 
-          decrease-brightness = mkBrightnessScript "-";
+          decrease-brightness = mkBrightnessScript "-" "decrease-brightness script";
         };
       };
     };