feat(portal): add StatusBadge to appointment cards

Add a StatusBadge component that renders human-readable labels
(Confirmed, Pending, Waitlisted, etc.) with semantic color classes
for appointment cards in the portal. Replaces raw status strings.

- Added STATUS_LABELS map for human-readable status labels
- Updated STATUS_COLORS to use accessible amber/blue tones
- Exported StatusBadge for testing
- Added unit tests for all 7 badge states plus fallback
- Updated UAT_PLAYBOOK.md §5.12c with status badge test cases

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/portal/sections/Appointments.tsx

@@ -82,14 +82,34 @@ export function isUpcoming(appt: Appointment): boolean {
 
 const STATUS_COLORS: Record<string, string> = {
   confirmed: 'bg-green-100 text-green-700',
-  pending: 'bg-amber-100 text-amber-700',
-  waitlisted: 'bg-blue-100 text-blue-700',
+  pending: 'bg-amber-100 text-amber-600',
+  waitlisted: 'bg-blue-100 text-blue-600',
   completed: 'bg-stone-100 text-stone-600',
   cancelled: 'bg-red-100 text-red-600',
   'no-show': 'bg-yellow-100 text-yellow-700',
-  scheduled: 'bg-blue-100 text-blue-700',
+  scheduled: 'bg-blue-100 text-blue-600',
 };
 
+const STATUS_LABELS: Record<string, string> = {
+  confirmed: 'Confirmed',
+  pending: 'Pending',
+  waitlisted: 'Waitlisted',
+  completed: 'Completed',
+  cancelled: 'Cancelled',
+  'no-show': 'No-show',
+  scheduled: 'Scheduled',
+};
+
+export function StatusBadge({ status }: { status: string }) {
+  const label = STATUS_LABELS[status] ?? status;
+  const colorClass = STATUS_COLORS[status] ?? 'bg-stone-100 text-stone-600';
+  return (
+    <span className={`px-2 py-0.5 rounded-full text-xs font-medium ${colorClass}`}>
+      {label}
+    </span>
+  );
+}
+
 const CONFIRMATION_STATUS_COLORS: Record<string, string> = {
   confirmed: 'bg-green-100 text-green-700',
   pending: 'bg-amber-100 text-amber-700',
@@ -297,13 +317,7 @@ function AppointmentCard({
             <span>with {appt.groomerName || 'First Available'}</span>
           </div>
         </div>
-        <span
-          className={`px-2 py-0.5 rounded-full text-xs font-medium ${
-            STATUS_COLORS[appt.status] || ''
-          }`}
-        >
-          {appt.status}
-        </span>
+        <StatusBadge status={appt.status} />
         {expanded ? (
           <ChevronDown size={16} className="text-stone-400" />
         ) : (