chore: update noctalia and wallpaper config

Add wallpaper options (setWallpaperOnAllMonitors, linkLightAndDarkWallpapers,
fillMode=crop). Set specific wallpaper file path instead of directory.
Fix noctalia.nix indentation.

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

modules/home/noctalia.nix

@@ -1,5 +1,8 @@
-{ pkgs, inputs, ... }:
 {
+  pkgs,
+  inputs,
+  ...
+}: {
   # import the home manager module
   imports = [
     inputs.noctalia.homeModules.default
@@ -94,6 +97,9 @@
       wallpaper = {
         enabled = true;
         directory = "~/.wallpapers/";
+        setWallpaperOnAllMonitors = true;
+        linkLightAndDarkWallpapers = true;
+        fillMode = "crop";
         randomEnabled = true;
         randomIntervalSec = 60;
         transitionDuration = 1500;
@@ -159,3 +165,4 @@
     # but in this case must include *all* settings.
   };
 }
+

modules/home/wallpaper.nix

@@ -17,9 +17,9 @@ in {
 
   home.file.".cache/noctalia/wallpapers.json" = {
     text = builtins.toJSON {
-      defaultWallpaper = "~/.wallpapers/";
+      defaultWallpaper = "~/.wallpapers/1.jpg";
       wallpapers = {
-        "DP-1" = "~/.wallpapers/";
+        "DP-1" = "~/.wallpapers/1.jpg";
       };
     };
   };