quickshell: use Rubik for panel text

settings/quickshell.nix

@@ -13,11 +13,12 @@ in
       qt6.qt5compat # Qt5Compat.GraphicalEffects in Bar.qml
     ];
 
-    # Icon font for the shell (ligature-based: text "volume_up" renders the
-    # icon) — same font caelestia uses; nerd-font glyphs stay for terminals.
-    fonts.packages = [ pkgs.material-symbols ];
+    # Shell fonts, matching caelestia: Rubik for all UI text, Material Symbols
+    # Rounded for icons (ligature-based: text "volume_up" renders the icon).
+    # Scoped to the bar only — terminals/GTK still follow stylix.
+    fonts.packages = [ pkgs.material-symbols pkgs.rubik ];
 
-    home-manager.users.fred = { config, lib, pkgs, osConfig, ... }:
+    home-manager.users.fred = { config, lib, pkgs, ... }:
     let
       c = config.lib.stylix.colors;
     in {
@@ -50,8 +51,6 @@ in
           [ -n "$pw" ] && ${pkgs.networkmanager}/bin/nmcli device wifi connect "$ssid" password "$pw"
         '';
         nmcli = "${pkgs.networkmanager}/bin/nmcli";
-        # Follow stylix's monospace choice so a font swap propagates to the bar
-        monoFont = osConfig.stylix.fonts.monospace.name;
         # Shell chrome fragment shader: the bar, screen frame, dropdown panel
         # and toast are one signed-distance field merged with a circular
         # smooth-min (caelestia-style liquid junctions); the 2px border is the
@@ -218,7 +217,7 @@ in
                 // colour animation stays in-hue instead of dipping through
                 // transparent *black* (which reads as an extra flash colour).
                 readonly property color base02t: "#00${c.base02}"
-                readonly property string fontFamily: "${monoFont}"
+                readonly property string fontFamily: "Rubik"
                 // Ligature-based icon font: text "volume_up" renders the icon
                 readonly property string iconFont: "Material Symbols Rounded"
                 // Matches hyprland general.border_size (col.inactive_border = base03)