feat: add SYS_FUTEX_WAIT and SYS_FUTEX_WAKE syscalls; revamp desktop application categories

programs/src/desktop/panel.cpp

@@ -271,13 +271,13 @@ void desktop_draw_app_menu(DesktopState* ds) {
     int mx = ds->mouse.x;
     int my = ds->mouse.y;
     int iy = menu_y + 5;
-    int cur_cat = -1;
+    bool cat_expanded = true;
 
     for (int i = 0; i < menu_row_count; i++) {
         const MenuRow& row = menu_rows[i];
 
-        if (row.is_category) cur_cat++;
-        if (!menu_row_visible(i)) continue;
+        if (row.is_category) cat_expanded = row.expanded;
+        else if (!cat_expanded) continue;
 
         int row_h = menu_row_height(row);
 
@@ -297,7 +297,7 @@ void desktop_draw_app_menu(DesktopState* ds) {
                                       Color::from_rgb(0xE8, 0xE8, 0xE8));
 
                 // Arrow indicator: > for collapsed, v for expanded
-                bool expanded = (cur_cat >= 0 && cur_cat < MENU_NUM_CATS) && menu_cat_expanded[cur_cat];
+                bool expanded = row.expanded;
                 int ax = menu_x + 10;
                 int ay = iy + row_h / 2;
                 Color arrow_color = Color::from_rgb(0x88, 0x88, 0x88);