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>

UAT_PLAYBOOK.md

@@ -195,6 +195,17 @@ export const { signIn, signOut, useSession, changePassword } = authClient;
 | TC-WEB-5.12.10 | RescheduleFlow error state | Mock API failure on availability fetch | "Failed to load time slots" error shown |
 | TC-WEB-5.12.11 | RescheduleFlow no slots | Select date with no availability | "No available slots on this date" shown |
 
+#### 5.12c Waitlist/Booking Status Badges (GRO-1795)
+
+| # | Scenario | Steps | Expected |
+|---|----------|-------|----------|
+| TC-WEB-5.12.12 | Confirmed badge | View appointment card with confirmed status | Green "Confirmed" badge displayed |
+| TC-WEB-5.12.13 | Pending badge | View appointment card with pending status | Amber "Pending" badge displayed |
+| TC-WEB-5.12.14 | Waitlisted badge | View appointment card with waitlisted status | Blue "Waitlisted" badge displayed |
+| TC-WEB-5.12.15 | Badge uses CSS classes | Inspect badge element | Badge uses CSS variable-based classes (e.g., bg-green-100, text-amber-600), not hardcoded colors |
+| TC-WEB-5.12.16 | Badge status from data | Compare badge label to appointment.status field | Badge label matches the API appointment status exactly |
+| TC-WEB-5.12.17 | Unknown status fallback | Render badge with unknown status value | Badge renders with the raw status string as label and fallback CSS class |
+
 ### 5.13 Reports UI
 
 | # | Scenario | Steps | Expected |