feat(app): give composer track pills a segment per state

A mixed fan-out used to collapse the pill to its single most urgent
state, so a red dot beside "1 failed" over a child that was still
working read as the whole fan-out having stopped. Every state present
now gets its own mark and count, in the sidebar's status-group order.

packages/app/src/i18n/resources/ar.ts

@@ -1664,7 +1664,7 @@ export const ar: TranslationResources = {
     title: "الوكلاء الفرعيون",
     pillLabelOne: "وكيل فرعي واحد",
     pillLabelMany: "{{count}} وكلاء فرعيين",
-    pillLabelRunning: "{{count}} قيد التشغيل",
+    pillLabelWorking: "{{count}} قيد التشغيل",
     pillLabelFailed: "{{count}} فشلت",
     pillLabelNeedsInputOne: "واحد يحتاج إدخالاً",
     pillLabelNeedsInputMany: "{{count}} تحتاج إدخالاً",