fix(a11y): Q.DEFER.004 sub-A — DealsTable show-select bulk-checkbox aria-label

VDataTable show-select prop генерировал unlabeled checkbox per row + select-all
header — axe-core критичная label violation (6 nodes на demo seed).

Override через Vuetify 3.12 typed slots:
- header.data-table-select → aria-label='Выбрать все сделки'
- item.data-table-select → aria-label='Выбрать сделку «{{name}}»' (per row)

Test coverage: tests/Frontend/DealsTable.spec.ts (2 specs).

app/resources/js/components/deals/DealsTable.vue

@@ -122,6 +122,23 @@ function formatCost(cost: number): string {
             <template #[`item.receivedMinutesAgo`]="{ item }: { item: MockDeal }">
                 <span class="num ld-mono-s text-medium-emphasis">{{ formatRelative(item.receivedMinutesAgo) }}</span>
             </template>
+
+            <template #[`header.data-table-select`]="{ allSelected, selectAll, someSelected }">
+                <v-checkbox-btn
+                    :model-value="allSelected"
+                    :indeterminate="someSelected && !allSelected"
+                    aria-label="Выбрать все сделки"
+                    @update:model-value="selectAll"
+                />
+            </template>
+
+            <template #[`item.data-table-select`]="{ isSelected, toggleSelect, internalItem, item }">
+                <v-checkbox-btn
+                    :model-value="isSelected(internalItem)"
+                    :aria-label="`Выбрать сделку «${(item as MockDeal).name}»`"
+                    @update:model-value="(v: boolean | null) => toggleSelect(internalItem)"
+                />
+            </template>
         </v-data-table>
 
         <div v-if="deals.length === 0" class="empty-state pa-8 text-center text-medium-emphasis">

app/tests/Frontend/DealsTable.spec.ts

@@ -0,0 +1,59 @@
+import { describe, it, expect } from 'vitest';
+import { mount } from '@vue/test-utils';
+import { createVuetify } from 'vuetify';
+
+import DealsTable from '../../resources/js/components/deals/DealsTable.vue';
+import type { MockDeal } from '../../resources/js/composables/mockDeals';
+
+const vuetify = createVuetify();
+
+const sampleDeals: MockDeal[] = [
+    {
+        id: 1,
+        name: 'Иванов И.',
+        phone: '+7 (916) 100-00-01',
+        statusSlug: 'new',
+        project: 'B1 site',
+        manager: { initials: 'AD', name: 'Admin' },
+        cost: 1000,
+        receivedMinutesAgo: 5,
+    },
+    {
+        id: 2,
+        name: 'Петров П.',
+        phone: '+7 (916) 100-00-02',
+        statusSlug: 'new',
+        project: 'B1 call',
+        manager: { initials: 'AD', name: 'Admin' },
+        cost: 1500,
+        receivedMinutesAgo: 30,
+    },
+];
+
+describe('DealsTable a11y (Q.DEFER.004 sub-A)', () => {
+    it('select-all header checkbox has aria-label', () => {
+        const wrapper = mount(DealsTable, {
+            props: { deals: sampleDeals, selectedIds: [], statusBySlug: new Map() },
+            global: { plugins: [vuetify] },
+        });
+        const headerCheckbox = wrapper.find(
+            'th .v-selection-control input[type="checkbox"][aria-label="Выбрать все сделки"]',
+        );
+        expect(headerCheckbox.exists()).toBe(true);
+    });
+
+    it('each row checkbox has aria-label referencing deal name', () => {
+        const wrapper = mount(DealsTable, {
+            props: { deals: sampleDeals, selectedIds: [], statusBySlug: new Map() },
+            global: { plugins: [vuetify] },
+        });
+        const rowCheckbox1 = wrapper.find(
+            'tbody tr:nth-of-type(1) input[type="checkbox"][aria-label="Выбрать сделку «Иванов И.»"]',
+        );
+        const rowCheckbox2 = wrapper.find(
+            'tbody tr:nth-of-type(2) input[type="checkbox"][aria-label="Выбрать сделку «Петров П.»"]',
+        );
+        expect(rowCheckbox1.exists()).toBe(true);
+        expect(rowCheckbox2.exists()).toBe(true);
+    });
+});