chore: update niri, wallpaper, and power configs

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

modules/core/power.nix

@@ -7,7 +7,5 @@
     enable = true;
     powertop.enable = true;
   };
-
-  services.power-profiles-daemon.enable = true;
 }
 

modules/home/niri/default.nix

@@ -19,7 +19,7 @@ in {
     };
 
     spawn-at-startup = [
-      {command = ["qs -c noctalia-shell"];}
+      {command = ["noctalia-shell"];}
     ];
 
     outputs."eDP-1".scale = 1;

modules/home/wallpaper.nix

@@ -14,4 +14,13 @@ in {
     source = walls;
     recursive = true;
   };
+
+  home.file.".cache/noctalia/wallpapers.json" = {
+    text = builtins.toJSON {
+      defaultWallpaper = "~/.wallpapers/";
+      wallpapers = {
+        "DP-1" = "~/.wallpapers/";
+      };
+    };
+  };
 }