fix(desktop): unfree CLI default, bar icon spacing, unified clock

Hardware findings on Latitude: nix-shell blocked unfree; whole-swap
bars collided icon+percentage; clock needed calcurse + one module.

- Export NIXPKGS_ALLOW_UNFREE=1 + ~/.config/nixpkgs/config.nix
- Mono Nerd face + trailing spaces on battery/volume icons (all bars)
- Single clock `HH:MM · Day DD Mon`; calcurse ships with waybar
- V3 queue entries for laptop re-check

Verification: V0 — nix flake check --no-build green; V2/V3 pending on
session (user-visible bar + CLI unfree).

themes/boreal/waybar.jsonc

@@ -10,8 +10,7 @@
   "reload_style_on_change": true,
   "modules-left": [
     "custom/nomarchy",
-    "clock",
-    "clock#date"
+    "clock"
   ],
   "modules-center": [
     "hyprland/workspaces"
@@ -38,14 +37,10 @@
     "tooltip-format": "Nomarchy menu"
   },
   "clock": {
-    "format": "{:%H:%M}",
+    "format": "{:%H:%M  ·  %a %d %b}",
     "on-click": "nomarchy-calendar",
     "tooltip": true,
-    "tooltip-format": "{:%Z (UTC%z)}\n<tt><small>{calendar}</small></tt>"
-  },
-  "clock#date": {
-    "format": "{:%a %d %b}",
-    "tooltip": false
+    "tooltip-format": "{:%A %d %B %Y}\n{:%Z (UTC%z)}\n<tt><small>{calendar}</small></tt>"
   },
   "hyprland/workspaces": {
     "disable-scroll": true,
@@ -101,21 +96,21 @@
   },
   "pulseaudio": {
     "scroll-step": 5,
-    "format": "<span size='13pt'>{icon}</span>  {volume}%",
-    "format-bluetooth": "<span size='13pt'>{icon}</span>  {volume}%",
+    "format": "<span size='13pt'>{icon}</span>{volume}%",
+    "format-bluetooth": "<span size='13pt'>{icon} </span>{volume}%",
     "format-bluetooth-muted": " {icon}",
-    "format-muted": "<span size='13pt'></span> muted",
+    "format-muted": "<span size='13pt'> </span>muted",
     "format-icons": {
-      "headphone": "",
-      "hands-free": "",
-      "headset": "",
-      "phone": "",
-      "portable": "",
-      "car": "",
+      "headphone": " ",
+      "hands-free": " ",
+      "headset": " ",
+      "phone": " ",
+      "portable": " ",
+      "car": " ",
       "default": [
-        "",
-        "",
-        ""
+        " ",
+        " ",
+        " "
       ]
     },
     "on-click": "wpctl set-mute @DEFAULT_AUDIO_SINK@ toggle",
@@ -128,15 +123,15 @@
       "warning": 25,
       "critical": 10
     },
-    "format": "<span size='13pt'>{icon}</span>  {capacity}%",
-    "format-charging": "<span size='13pt'></span> {capacity}%",
-    "format-plugged": "<span size='13pt'></span> {capacity}%",
+    "format": "<span size='13pt'>{icon}</span>{capacity}%",
+    "format-charging": "<span size='13pt'> </span>{capacity}%",
+    "format-plugged": "<span size='13pt'> </span>{capacity}%",
     "format-icons": [
-      "",
-      "",
-      "",
-      "",
-      ""
+      " ",
+      " ",
+      " ",
+      " ",
+      " "
     ],
     "on-click": "nomarchy-menu powermgmt",
     "tooltip-format": "Battery status"