fix(hyprland): mic mute via wpctl -- swayosd 0.2.1 input-mute is a no-op

swayosd-client --input-volume mute-toggle draws the OSD but never flips the
default source's mute (its output-mute path works; input does not). Confirmed
on hardware: wpctl set-mute @DEFAULT_SOURCE@ toggle flips the state, swayosd
does not. Do the real toggle with wpctl and keep an OSD via swayosd's
--custom-icon/--custom-message.

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

modules/home/hyprland.nix

@@ -1,13 +1,31 @@
 # Hyprland — fully driven by config.nomarchy.theme (theme-state.json).
 # Gaps, borders and colors are baked from the JSON at eval time; theme
 # changes arrive via `home-manager switch`.
-{ config, lib, ... }:
+{ config, lib, pkgs, ... }:
 
 let
   t = config.nomarchy.theme;
   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.
+  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
+  '';
+
   # SUPER+1..9 / SUPER+SHIFT+1..9 workspace binds, generated.
   workspaceBinds = builtins.concatLists (builtins.genList
     (i:
@@ -150,7 +168,8 @@ in
 
       bindl = [
         ", XF86AudioMute, exec, swayosd-client --output-volume mute-toggle"
-        ", XF86AudioMicMute, exec, swayosd-client --input-volume mute-toggle"
+        # swayosd's input mute-toggle is broken on 0.2.1 (see micMute above).
+        ", XF86AudioMicMute, exec, ${micMute}"
         ", XF86AudioPlay, exec, playerctl play-pause"
         ", XF86AudioPause, exec, playerctl play-pause"
         ", XF86AudioNext, exec, playerctl next"