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/executive-slate/waybar.css

@@ -22,7 +22,9 @@
 @define-color bad       #D06B71;
 
 * {
-  font-family: "Inter", "Symbols Nerd Font", "JetBrainsMono Nerd Font", sans-serif;
+  /* Mono Nerd face first for status glyphs: proportional "Symbols Nerd
+     Font" has tight right bearings that make icon+percentage collide. */
+  font-family: "Symbols Nerd Font Mono", "Inter", "JetBrainsMono Nerd Font", sans-serif;
   font-size: 13px;
   font-weight: 500;
   border: none;
@@ -114,10 +116,11 @@ window#waybar {
   border-bottom: 2px solid @bad;
 }
 
-/* ── Clock — time (center) and date (left) share the #clock id ───── */
+/* ── Clock — unified time · date in one module ───────────────────── */
 #clock {
   color: @text;
   font-weight: 600;
+  font-family: "Inter", "Symbols Nerd Font Mono", sans-serif;
 }
 
 /* ── Status cluster: neutral by default, semantic on state ───────── */

themes/executive-slate/waybar.jsonc

@@ -10,8 +10,7 @@
   "reload_style_on_change": true,
   "modules-left": [
     "custom/nomarchy",
-    "hyprland/workspaces",
-    "clock#date"
+    "hyprland/workspaces"
   ],
   "modules-center": [
     "clock"
@@ -45,14 +44,10 @@
     "on-scroll-down": "hyprctl dispatch workspace r-1"
   },
   "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>"
   },
   "custom/recording": {
     "return-type": "json",
@@ -87,21 +82,21 @@
   },
   "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",
@@ -120,15 +115,15 @@
       "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"