fix(hyprland): show the mic level in the mute OSD

The wpctl-based mic toggle lost the volume bar the native swayosd input OSD
used to draw -- it only showed an icon + text. swayosd 0.3.x exposes
--custom-progress (0.0-1.0), so read the level back from wpctl after the
toggle and render icon + bar (muted/active glyph via --custom-icon),
matching the output-volume OSD. Parsing is pure bash builtins so the script
needs no PATH beyond the two pinned tools.

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

modules/home/hyprland.nix

@@ -8,22 +8,23 @@ let
   c = t.colors;
   inherit (config.nomarchy.lib) rgb rgba;
 
-  # swayosd 0.2.1's `--input-volume mute-toggle` draws the OSD but never
-  # flips the source mute (verified on hardware: wpctl toggles the state,
-  # swayosd's input-mute path is a no-op — unlike its working output-mute
-  # path). Do the real toggle with wpctl, then show an OSD reflecting the
-  # resulting state via swayosd's --custom-icon/--custom-message.
+  # swayosd's `--input-volume mute-toggle` draws the OSD but never flips the
+  # source mute (verified on hardware: wpctl toggles the state, swayosd's
+  # input-mute path is a no-op — unlike its working output-mute path). Do the
+  # real toggle with wpctl, then re-render the same icon + volume-bar OSD the
+  # native input path would, reading the resulting state back from wpctl:
+  # --custom-progress is the mic level (0.0-1.0), --custom-icon the
+  # muted/active glyph. Pure bash builtins for parsing so the script needs no
+  # PATH beyond the two pinned tools.
   micMute = pkgs.writeShellScript "nomarchy-mic-mute" ''
     ${pkgs.wireplumber}/bin/wpctl set-mute @DEFAULT_SOURCE@ toggle
-    if ${pkgs.wireplumber}/bin/wpctl get-volume @DEFAULT_SOURCE@ | grep -q MUTED; then
-      ${pkgs.swayosd}/bin/swayosd-client \
-        --custom-icon microphone-sensitivity-muted-symbolic \
-        --custom-message "Microphone muted"
-    else
-      ${pkgs.swayosd}/bin/swayosd-client \
-        --custom-icon microphone-sensitivity-high-symbolic \
-        --custom-message "Microphone unmuted"
-    fi
+    out=$(${pkgs.wireplumber}/bin/wpctl get-volume @DEFAULT_SOURCE@)
+    set -- $out            # "Volume: 0.85 [MUTED]" -> $2 is the level
+    case "$out" in
+      *MUTED*) icon=microphone-sensitivity-muted-symbolic ;;
+      *)       icon=microphone-sensitivity-high-symbolic ;;
+    esac
+    ${pkgs.swayosd}/bin/swayosd-client --custom-icon "$icon" --custom-progress "$2"
   '';
 
   # SUPER+1..9 / SUPER+SHIFT+1..9 workspace binds, generated.