fix: use app icon precedence for individual app categories

Not only is precedence used to choose which window is used to represent
the workspace, it is also now used to choose which category of each
window is used to represent the app itself.

util/Icons.qml

@@ -127,6 +127,31 @@ Singleton {
         Office: "content_paste"
     })
 
+    // App icon precedence
+    // Used to preferentially pick app icon for display
+    readonly property var appIconPrec: ({
+        sports_esports: 10,
+        code: 9,
+        music_note: 9,
+        content_paste: 9,
+        graphic_eq: 8,
+        tv: 8,
+        edit_note: 6,
+        language: 5,
+        business_messages: 5,
+        files: 4,
+        mic: 4,
+        construction: 4,
+        terminal: 3,
+        monitor_heart: 3,
+        security: 3,
+        photo_library: 3,
+        archive: 2,
+        settings: 2,
+        build: 1,
+        host: 0
+    })
+
     function getDesktopEntry(name: string): DesktopEntry {
         name = name.toLowerCase().replace(/ /g, "-");
 
@@ -146,37 +171,18 @@ Singleton {
     function getAppCategoryIcon(name: string, fallback: string): string {
         const categories = getDesktopEntry(name)?.categories;
 
+        let values = [];
         if (categories)
             for (const [key, value] of Object.entries(categoryIcons))
-                if (categories.includes(key))
-                    return value;
-        return fallback;
-    }
+                if (categories.includes(key) && value in appIconPrec)
+                    values.push(value);
 
-    // App icon precedence
-    // Used to preferentially display apps in a workspace
-    readonly property var appIconPrec: ({
-        sports_esports: 10,
-        code: 9,
-        music_note: 9,
-        content_paste: 9,
-        graphic_eq: 8,
-        tv: 8,
-        edit_note: 6,
-        language: 5,
-        business_messages: 5,
-        files: 4,
-        host: 4,
-        mic: 4,
-        construction: 4,
-        monitor_heart: 3,
-        security: 3,
-        archive: 3,
-        settings: 2,
-        build: 2,
-        photo_library: 1,
-        terminal: 1
-    })
+        if (values.length !== 0) {
+            return values.reduce((a, b) => appIconPrec[a] > appIconPrec[b] ? a : b);
+        } else {
+            return fallback;
+        }
+    }
 
     function getWorkspaceIcon(workspace: HyprlandWorkspace): string {
         if (!workspace || workspace.toplevels.values.length === 0) return "add";