style(themes): brand the launcher mark and rework waybar icon sizing

- Pin `font-family: Nomarchy` on #custom-nomarchy (boreal, executive-slate)
  so the branded mark at U+F000 wins over the Nerd Font's glass glyph at
  the same codepoint (summer bars already pinned it).
- Enlarge the icons on icon+text modules via a Pango span, with a gap so
  the glyph no longer crowds the value. The volume module gets a wider
  gap: its level glyph is unusually wide and overlapped the % otherwise.
- Bump icon-only status modules (caffeine, speedometer, …) to match, so
  they don't read smaller than their neighbours. The generated bar sizes
  everything relative to fonts.size (+2/+3pt) so it scales per theme.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

themes/boreal/waybar.jsonc

@@ -87,7 +87,7 @@
     "on-click": "nomarchy-nightlight toggle"
   },
   "hyprland/language": {
-    "format": "󰌌 {short}",
+    "format": "<span size='13pt'>󰌌</span> {short}",
     "tooltip": false
   },
   "custom/vpn": {
@@ -98,10 +98,10 @@
   },
   "pulseaudio": {
     "scroll-step": 5,
-    "format": "{icon} {volume}%",
-    "format-bluetooth": "{icon} {volume}%",
+    "format": "<span size='13pt'>{icon}</span>  {volume}%",
+    "format-bluetooth": "<span size='13pt'>{icon}</span>  {volume}%",
     "format-bluetooth-muted": " {icon}",
-    "format-muted": "  muted",
+    "format-muted": "<span size='13pt'></span> muted",
     "format-icons": {
       "headphone": "",
       "hands-free": "",
@@ -124,9 +124,9 @@
       "warning": 25,
       "critical": 10
     },
-    "format": "{icon} {capacity}%",
-    "format-charging": " {capacity}%",
-    "format-plugged": " {capacity}%",
+    "format": "<span size='13pt'>{icon}</span> {capacity}%",
+    "format-charging": "<span size='13pt'></span> {capacity}%",
+    "format-plugged": "<span size='13pt'></span> {capacity}%",
     "format-icons": [
       "",
       "",