feat(giving): keyboard-first Sunday offering batch entry page + routes

- Add MemberQuickAddDialogComponent for fast in-session member creation
- Add OfferingSessionPageComponent: client-side buffer, reconcile totals, date-conflict check, submit to API
- Wire finance/giving-categories, finance/givings, finance/offering-session routes (RoleGuard: finance + super_admin)
- Fix givings-page: replace [total] + data[] with GridDataResult for Kendo v20 server-side paging

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

APP/src/app/features/giving/pages/givings-page/givings-page.component.html

@@ -12,9 +12,9 @@
     <button kendoButton (click)="onSearch()">Search</button>
   </div>
 
-  <kendo-grid [data]="data" [loading]="isLoading"
+  <kendo-grid [data]="gridData" [loading]="isLoading"
       [pageable]="true" [skip]="(page-1)*pageSize" [pageSize]="pageSize"
-      [total]="totalCount" (pageChange)="onPageChange($event)">
+      (pageChange)="onPageChange($event)">
     <kendo-grid-column field="givingDate" title="Date" [width]="110"></kendo-grid-column>
     <kendo-grid-column title="Giver">
       <ng-template kendoGridCellTemplate let-g>{{ g.isAnonymous ? '(Anonymous)' : g.memberName }}</ng-template>

APP/src/app/features/giving/pages/givings-page/givings-page.component.ts

@@ -1,7 +1,7 @@
 import { Component, OnInit } from '@angular/core';
 import { CommonModule } from '@angular/common';
 import { FormsModule } from '@angular/forms';
-import { GridModule, PageChangeEvent } from '@progress/kendo-angular-grid';
+import { GridModule, GridDataResult, PageChangeEvent } from '@progress/kendo-angular-grid';
 import { InputsModule } from '@progress/kendo-angular-inputs';
 import { ButtonsModule } from '@progress/kendo-angular-buttons';
 import { DropDownsModule } from '@progress/kendo-angular-dropdowns';
@@ -32,8 +32,7 @@ interface MemberOption {
   styleUrls: ['./givings-page.component.scss'],
 })
 export class GivingsPageComponent implements OnInit {
-  data: GivingListItemDto[] = [];
-  totalCount = 0;
+  gridData: GridDataResult = { data: [], total: 0 };
   page = 1;
   pageSize = 20;
   isLoading = false;
@@ -73,7 +72,7 @@ export class GivingsPageComponent implements OnInit {
       categoryId: this.filterCategoryId ?? undefined,
     }).subscribe({
       next: (r: PagedResult<GivingListItemDto>) => {
-        this.data = r.items; this.totalCount = r.totalCount; this.isLoading = false;
+        this.gridData = { data: r.items, total: r.totalCount }; this.isLoading = false;
       },
       error: () => { this.isLoading = false; },
     });