Phase7: Void/Refund logic

src/components/billing/customer-invoice-list.tsx

@@ -12,6 +12,13 @@ const statusColors: Record<string, string> = {
   paid: "text-success bg-success/10",
   overdue: "text-error bg-error/10",
   void: "text-text-muted bg-surface-3 line-through",
+  // Phase 7: refund states. Red tinting matches the credit-note
+  // PDF accent so customers reading the table get a visual cue
+  // that something was credited back. partially_refunded reads
+  // as a partial state (mixed colour), fully_refunded reads as
+  // closed (line-through like void).
+  partially_refunded: "text-error bg-error/10",
+  fully_refunded: "text-text-muted bg-error/10 line-through",
 };
 
 /**