feat(waybar): add systemd warnings

stow/waybar/.config/waybar/config.jsonc

@@ -45,9 +45,7 @@
             "mpris"
         ],
         "modules-right": [
-            "keyboard-state#numlock",
-            "keyboard-state#capslock",
-            "privacy",
+            "group/badges",
             "tray",
             "group/control-center",
             "group/display",

stow/waybar/.config/waybar/modules.json

@@ -196,6 +196,16 @@
         "tooltip": true
     },
 
+    "group/badges": {
+        "orientation": "inherit",
+        "modules": [
+            "keyboard-state#numlock",
+            "keyboard-state#capslock",
+            "systemd-failed-units",
+            "privacy"
+        ]
+    },
+
     "group/control-center": {
         "orientation": "inherit",
         "modules": [
@@ -449,6 +459,11 @@
         }
     },
 
+    "systemd-failed-units": {
+        "hide-on-ok": true,
+        "format": "\uf071 {nr_failed}", /*   */
+    },
+
     "tray": {
         "icon-size": 16,
         "show-passive-items": true,

stow/waybar/.config/waybar/style.css

@@ -99,6 +99,12 @@ window#waybar {
     background-color: @warning;
 }
 
+#systemd-failed-units.ok {
+    padding: 0;
+    margin: 0;
+    opacity: 0;
+}
+
 #temperature.critical {
     background-color: @warning;
 }