Add professor share & financial reports UI, expense management page

Adds payout configuration fields (percentage/hourly + per-session
expense allowance) with a live payout preview to the class form,
a new Financial Reports page (per-class and date-range/monthly tabs,
per-session drill-down dialog) with reusable stat cards, and an
Institutional Expenses management page. Registers routes, sidebar
navigation, and permission constants for the new financial_reports
and expenses permissions.

src/router/routes.js

@@ -162,6 +162,20 @@ export const routes = [
         component: () => import('@/views/payments/PaymentDetailView.vue')
       },
 
+      // Financial reports & institutional expenses
+      {
+        path: 'financial-reports',
+        name: 'FinancialReports',
+        component: () => import('@/views/financialReports/FinancialReportsView.vue'),
+        meta: { title: 'گزارش‌های مالی', permission: 'financial_reports:read' }
+      },
+      {
+        path: 'expenses',
+        name: 'ExpenseList',
+        component: () => import('@/views/expenses/ExpenseListView.vue'),
+        meta: { title: 'هزینه‌های موسسه', permission: 'expenses:read' }
+      },
+
       // Roles
       {
         path: 'roles',