chore: misc tweaks — nm-applet autostart, thunar, SUPER+Q close, monitor preset

- autostart nm-applet --indicator under uwsm-app
- install networkmanagerapplet system-wide
- swap Nautilus for Thunar in file-manager bindings
- close-window bound to SUPER+Q (was SUPER+W)
- switch the active monitor preset from retina/2x to 1x 1080p/1440p
- summer-night waybar: drop custom/battery + backlight from modules-right

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

core/home/config/nomarchy/default/hypr/autostart.conf

@@ -11,3 +11,6 @@ exec-once = nomarchy-on-boot
 # Slow app launch fix -- set systemd vars
 exec-once = systemctl --user import-environment $(env | cut -d'=' -f 1)
 exec-once = dbus-update-activation-environment --systemd --all
+
+# Network Manager
+exec-once = uwsm-app 'nm-applet --indicator'

core/home/config/nomarchy/default/hypr/bindings/tiling.conf

@@ -2,7 +2,7 @@
 # Do not make changes here, but bring them to tiling-v2.conf instead.
 
 # Close windows
-bindd = SUPER, W, Close window, killactive,
+bindd = SUPER, Q, Close window, killactive,
 bindd = CTRL ALT, DELETE, Close all windows, exec, nomarchy-hyprland-window-close-all
 
 # Control tiling

core/system/network.nix

@@ -25,4 +25,8 @@ in
       DNSOverTLS=opportunistic
     '';
   };
+
+  environment.systemPackages = [
+   pkgs.networkmanagerapplet
+  ];
 }