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).

agent/HARDWARE-QUEUE.md

@@ -8,6 +8,16 @@ the failure as a NOW bug in BACKLOG.md. Machines: the **AMD dev box**
 QA machine), the **T14s** (webcam case).
 
 ## Any machine (dev box is fine)
+- [ ] **Unfree CLI default (2026-07-10)** — after `sys-rebuild` + new
+      shell/login: `echo $NIXPKGS_ALLOW_UNFREE` → `1`; `nix-shell -p
+      vscode --run 'code --version'` (or another unfree pkg) succeeds
+      without a manual export; `cat ~/.config/nixpkgs/config.nix` has
+      `allowUnfree = true`. (Flake-pure `nix shell nixpkgs#…` still may
+      need `--impure` — that is expected.)
+- [ ] **Waybar icon+percentage spacing (2026-07-10)** — switch to
+      executive-slate (and spot-check boreal/summer): battery glyph and
+      capacity% do not collide; volume glyph and volume% do not collide.
+      Unified clock reads as one module (`HH:MM · Day DD Mon`).
 - [ ] **Charge-limit live apply (2026-07-10)** — on a laptop with
       `charge_control_end_threshold`: System › Battery limit → 80%;
       confirm `cat …/charge_control_end_threshold` is 80 without rebuild;
@@ -331,16 +341,16 @@ QA machine), the **T14s** (webcam case).
       night, executive-slate, boreal) behave the same and their shutdown
       power-button (if present) still opens the lock/logout menu.
 
-- [ ] **Calendar on the clock click** (iteration #68, item 42) — after
-      `home-update` + relogin: left-click the Waybar date/clock → calcurse
-      opens in a **floating, centered** ghostty window (~60×65% of screen),
-      showing the month calendar; closing calcurse (`q`) closes the window.
-      The `--class=com.nomarchy.calendar` must match the windowrule (if it
+- [ ] **Calendar on the unified clock click** (iteration #68 + 2026-07-10
+      bar polish) — after `home-update` + relogin: the bar shows **one**
+      clock module (`HH:MM · Day DD Mon`, not separate date/time modules);
+      left-click it → calcurse opens in a **floating, centered** ghostty
+      window (~60×65% of screen); closing calcurse (`q`) closes the window.
+      calcurse is a bar package (no template line required). The
+      `--class=com.nomarchy.calendar` must match the windowrule (if it
       tiles, run `hyprctl clients` while open and check the real app-id).
       Hover the clock → tooltip shows the long date + zone + month grid.
-      Same on a whole-swap bar (summer/boreal/executive-slate). If calcurse
-      was removed from home.packages, the click toasts "calcurse isn't
-      installed" instead of doing nothing.
+      Same on a whole-swap bar (summer/boreal/executive-slate).
 - [ ] **Screenshot annotation (satty)** (iteration #73) — after `home-update`:
       hit SUPER+SHIFT+Print (or Tools ▸ Capture ▸ Annotate region) → a region
       select (slurp) appears, then the `satty` UI opens in fullscreen with the