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/types/index.ts

@@ -539,7 +539,6 @@ export interface ServiceItem {
     staff_members?: { uuid: string; full_name: string }[];
     active: boolean;
     insurance_covered?: boolean;
-    insurance_price_rials?: number | null;
     duration_minutes?: number | null;
     bookable?: boolean;
 }
@@ -670,7 +669,14 @@ export interface PatientSession {
     base_insurance_discount_percent: string;
     supplementary_discount_percent: string;
     services_total_rials: number;
+    /** تفکیک بیمه — سرور محاسبه می‌کند؛ کلاینت هرگز خودش نسازد */
+    gross_total_rials?: number;
+    base_insurance_rials?: number;
+    supplementary_insurance_rials?: number;
+    patient_share_rials?: number;
     final_price_rials: number;
+    remaining_rials?: number;
+    paid_total_rials?: number;
     payment_method: string;
     is_paid?: boolean;
     services?: SessionServiceLine[];