feature(noctalia): take argon's gui overrides into the config

- idle: 300s screen-off, 600s lock, 5s fade, and explicit actions (without them the behaviours do nothing once settings.toml is gone)
- font without Mono, launcher without categories or global emoji, control-center logo from syncthing
- drop shell.ui_scale and shell.panel.launcher_compact, which v5 ignores

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

modules/home-manager/noctalia.nix

@@ -24,15 +24,18 @@
 
       # general
       shell = {
-        font_family = "0xProto Nerd Font Mono";
-        ui_scale = 1.2;
+        font_family = "0xProto Nerd Font";
         avatar_path = "/home/aaron/syncthing/pictures/Logo-Aaron-Totenkopf-rund-schwarz.png";
         telemetry_enabled = false;
         clipboard_enabled = true;
         password_style = "random";
 
+        launcher = {
+          categories = false;
+          providers.emoji.global = false;
+        };
+
         panel = {
-          launcher_compact = true;
           open_near_click_control_center = true;
           open_near_click_session = true;
           open_near_click_wallpaper = true;
@@ -97,7 +100,7 @@
         bluetooth.capsule = true;
         control-center = {
           capsule_radius = 8;
-          custom_image = "/home/aaron/Pictures/nix_flake_logo.png";
+          custom_image = "/home/aaron/syncthing/pictures/nix_flake_logo.png";
           scale = 1.4;
         };
         cpu.capsule = true;
@@ -116,6 +119,7 @@
 
       # idle behavior
       idle = {
+        pre_action_fade_seconds = 5;
         behavior_order = [
           "screen-off"
           "lock"
@@ -123,14 +127,17 @@
         ];
         behavior = {
           "screen-off" = {
+            action = "screen_off";
+            enabled = true;
+            timeout = 300;
+          };
+          "lock" = {
+            action = "lock";
             enabled = true;
             timeout = 600;
           };
-          "lock" = {
-            enabled = true;
-            timeout = 660;
-          };
           "lock-and-suspend" = {
+            action = "lock_and_suspend";
             enabled = true;
             timeout = 1800;
           };