chore(hyprland): delete orphan config files + share-picker dir

Six unreferenced files surfaced under features/desktop/hyprland/config/
during the Pillar 8 sweep:

- `looknfeel.conf` and `autostart.conf` were deployed to ~/.config/hypr/
  but never sourced by nomarchy.conf. The substantive versions live in
  core/home/config/nomarchy/default/hypr/ and are sourced from there.
  Removed the deployment lines in features/desktop/hyprland/default.nix
  alongside the file deletes.
- `hyprlock.conf`, `hyprsunset.conf`, `xdph.conf` weren't deployed at
  all and weren't referenced anywhere. Pure leftovers.

The entire `features/desktop/hyprland-preview-share-picker/` directory
was also orphan: no `default.nix`, no Nix module imports the
`config.yaml`. Only mention was inside the (now-deleted) `xdph.conf`.
Deleted the directory.

No behavioral change — these files weren't being used. Just removes
dead surface that confuses contributors looking for the "real" config
location.

features/desktop/hyprland/default.nix

@@ -48,13 +48,14 @@ in
     '';
   };
 
-  # Deploy Hyprland configuration files
+  # Deploy Hyprland configuration files. Only the files that nomarchy.conf
+  # actually sources are deployed here — looknfeel.conf and autostart.conf
+  # live under ~/.config/nomarchy/default/hypr/ and are deployed by the
+  # core/home bulk-nomarchy dir, so duplicating them here was dead surface.
   xdg.configFile."hypr/nomarchy.conf".source = ./config/nomarchy.conf;
   xdg.configFile."hypr/monitors.conf".source = lib.mkDefault ./config/monitors.conf;
   xdg.configFile."hypr/input.conf".source = lib.mkDefault ./config/input.conf;
   xdg.configFile."hypr/bindings.conf".source = lib.mkDefault ./config/bindings.conf;
-  xdg.configFile."hypr/looknfeel.conf".source = lib.mkDefault ./config/looknfeel.conf;
-  xdg.configFile."hypr/autostart.conf".source = lib.mkDefault ./config/autostart.conf;
 
   # Run swaybg as a proper systemd user service rather than a Hyprland exec-once.
   # exec-once fails silently (black screen with no visible error) when timing