Implement upsert label flow and use-based mark gone handling

tests/features/labels/upsert-submit.test.js

@@ -0,0 +1,86 @@
+import { describe, expect, it, vi } from 'vitest';
+
+const applyItemUpsertMock = vi.fn();
+const previewItemUpsertMock = vi.fn();
+
+vi.mock('../../../src/api/stock.js', () => ({
+  applyItemUpsert: (...args) => applyItemUpsertMock(...args),
+  previewItemUpsert: (...args) => previewItemUpsertMock(...args),
+  searchItemDefinitions: vi.fn(async () => []),
+}));
+
+vi.mock('../../../src/api/labels.js', () => ({
+  previewLabel: vi.fn(async () => ({ objectUrl: 'blob:preview' })),
+}));
+
+vi.mock('../../../src/api/locations.js', () => ({
+  fetchLocations: vi.fn(async () => ({ flat: [], tree: [] })),
+}));
+
+const { labelCreatePageData } = await import('../../../src/features/labels/label-create-page.js');
+
+describe('label create upsert-first submit', () => {
+  it('builds upsert payload with selected template uuid', () => {
+    const store = {
+      isConnected: false,
+      activeKitchen: { id: 7 },
+      addAlert: vi.fn(),
+    };
+    const data = labelCreatePageData(store);
+    data.form = {
+      ...data.form,
+      itemUuidB64: 'uuid-template-1',
+      name: 'Beans',
+      description: 'Dry beans',
+      stockType: 'measured',
+      quantity: '2',
+      uom: 'kg',
+      level: '',
+      productionDate: '2026-04-10',
+      expirationDate: '2026-08-10',
+      locationId: '',
+      identifierCode: '12345',
+    };
+
+    const payload = data.buildUpsertPayload();
+
+    expect(payload.uuid_b64).toBe('uuid-template-1');
+    expect(payload.identifier_code).toBe('12345');
+    expect(payload.item.name).toBe('Beans');
+    expect(payload.item.quantity_initial).toBe(2);
+  });
+
+  it('create uses applyItemUpsert and sets operation-aware success message', async () => {
+    applyItemUpsertMock.mockResolvedValueOnce({
+      operation: 'update',
+      item: { name: 'Rice' },
+    });
+
+    const addAlert = vi.fn();
+    const store = {
+      isConnected: false,
+      activeKitchen: { id: 3 },
+      addAlert,
+    };
+    const data = labelCreatePageData(store);
+    data.validateBeforeSubmit = () => true;
+    data.form = {
+      ...data.form,
+      name: 'Rice',
+      stockType: 'binary',
+      locationId: '',
+      productionDate: '2026-04-10',
+      itemUuidB64: 'uuid-rice-1',
+    };
+
+    await data.create();
+
+    expect(applyItemUpsertMock).toHaveBeenCalledTimes(1);
+    expect(applyItemUpsertMock.mock.calls[0][1].uuid_b64).toBe('uuid-rice-1');
+    expect(data.successMessage).toBe('Rice was updated successfully.');
+    expect(addAlert).toHaveBeenCalledWith({
+      type: 'success',
+      message: 'Rice was updated successfully.',
+    });
+  });
+});