feat: give yolo a distinct amber cursor

yolo's desktop is only ever seen through a Moonlight window, so its cursor
needs to be tellable apart from the client's at a glance. Bibata-Modern-Amber
differs in both colour and silhouette from Nordzy.

Threads the theme through an option rather than setting it in one place: it
was hardcoded in cursor.nix, in hl.env, in the setcursor autostart, and twice
more in darkman's mode scripts, which re-set it on every light/dark switch and
would have reverted the override.

Also drops a stale hl.env pointing HYPRCURSOR_THEME at rose-pine-hyprcursor,
which no host installs.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

home/yolo/default.nix

@@ -31,6 +31,15 @@ in
 
   custom.hyprland.cursorSize = 32;
 
+  # Amber, and a different silhouette to Nordzy — this desktop is only ever seen
+  # inside a Moonlight window, so the cursor has to be tellable at a glance from
+  # the client's own. Same theme in both modes; darkman would otherwise swap it.
+  custom.hyprland.cursorPackage = pkgs.bibata-cursors;
+  custom.hyprland.cursorTheme = {
+    dark = "Bibata-Modern-Amber";
+    light = "Bibata-Modern-Amber";
+  };
+
   home = {
     # Headless browser driver the agent tooling shells out to. Was a global npm
     # install on the ubuntu box.