fix(desktop): hardware findings — charge limit, polkit ws, bar deps

Latitude 5310 QA:
- Clock tooltip: drop empty {calendar} popup; plain date+zone
- Charge limit: restart oneshot via polkit + dual write/delay for
  Dell unplug race; toast verifies sysfs; looser menu match
- pwvucontrol ships with waybar (right-click volume)
- Print/region→clipboard toasts success
- Polkit (and pinentry) open on current workspace + stayfocused

V0: flake check --no-build green. V3: retest A3/A4/B1/tooltip/polkit.

modules/home/hyprland.nix

@@ -493,10 +493,17 @@ in
 
         # Polkit auth (hyprpolkitagent — app id / binary name in the package)
         # and pinentry-qt (keys.nix default; org.gnupg.pinentry-qt desktop).
+        # workspace current: agent was started on ws1 at login; without this
+        # the dialog opens on that workspace and the current one looks dead
+        # (hardware: Snapshots menu from ws≠1). stayfocused so it grabs
+        # attention when it lands.
         "float 1, match:class (?i)^(hyprpolkitagent|\\.hyprpolkitagent-wrapped)$"
         "center 1, match:class (?i)^(hyprpolkitagent|\\.hyprpolkitagent-wrapped)$"
+        "workspace current, match:class (?i)^(hyprpolkitagent|\\.hyprpolkitagent-wrapped)$"
+        "stayfocused 1, match:class (?i)^(hyprpolkitagent|\\.hyprpolkitagent-wrapped)$"
         "float 1, match:class (?i)^(pinentry(-qt)?|org\\.gnupg\\.pinentry-qt)$"
         "center 1, match:class (?i)^(pinentry(-qt)?|org\\.gnupg\\.pinentry-qt)$"
+        "workspace current, match:class (?i)^(pinentry(-qt)?|org\\.gnupg\\.pinentry-qt)$"
       ];
 
       # Rendered from ./keybinds.nix (the cheatsheet reads the same list),