Refactor insurance share calculation logic in PatientService

- Consolidated the calculation of patient and insurance shares into a single method using BillingCalculator.
- Introduced new fields in PatientSession to store breakdown of insurance shares and patient share.
- Updated the API responses to include the new fields for consistency across payment, invoice, and claims dashboard.
- Added migration to backfill existing sessions with appropriate values for the new fields.
- Implemented tests to ensure the correctness of the new logic and verify that the breakdown sums to the gross total.
- Redesigned the claims dashboard to provide a more user-friendly overview of patient claims and their statuses.

assets/admin/components/SessionServiceCard.tsx

@@ -24,6 +24,12 @@ export interface SessionCardData {
   supplementary_discount_percent?: number;
   doctor_name?: string | null;
   final_price_rials?: number;
+  // تفکیک بیمه — سرور محاسبه می‌کند (PatientSession::applyShares)
+  gross_total_rials?: number;
+  base_insurance_rials?: number;
+  supplementary_insurance_rials?: number;
+  patient_share_rials?: number;
+  remaining_rials?: number;
   patient_debt_rials?: number;
   is_paid?: boolean;
   invoice_uuid?: string | null;