Add category management: list API, UI integration, and search updates

tests/features/stock/stock-list-page-grouped.test.js

@@ -7,6 +7,7 @@ const getStockEntryMock = vi.fn();
 const updateStockItemMock = vi.fn();
 const useStockItemMock = vi.fn();
 const fetchLocationsMock = vi.fn();
+const listCategoriesMock = vi.fn();
 
 vi.mock('../../../src/api/stock.js', () => ({
   listStockEntries: (...args) => listStockEntriesMock(...args),
@@ -21,6 +22,10 @@ vi.mock('../../../src/api/locations.js', () => ({
   fetchLocations: (...args) => fetchLocationsMock(...args),
 }));
 
+vi.mock('../../../src/api/categories.js', () => ({
+  listCategories: (...args) => listCategoriesMock(...args),
+}));
+
 const { stockListPageData } = await import('../../../src/features/stock/stock-list-page.js');
 
 function createGroupedSummary() {
@@ -112,6 +117,8 @@ describe('stock list grouped-first behavior', () => {
     updateStockItemMock.mockReset();
     useStockItemMock.mockReset();
     fetchLocationsMock.mockReset();
+    listCategoriesMock.mockReset();
+    listCategoriesMock.mockResolvedValue([]);
 
     globalThis.window = createWindowMock();
     globalThis.requestAnimationFrame = (callback) => callback();
@@ -133,6 +140,7 @@ describe('stock list grouped-first behavior', () => {
     listStockEntriesMock.mockResolvedValueOnce([]);
     listKitchenChangesMock.mockResolvedValue({ since: null, nextCursor: null, changes: [] });
     fetchLocationsMock.mockResolvedValue({ flat: [], tree: [] });
+    listCategoriesMock.mockResolvedValue([]);
 
     const store = { isConnected: true, addAlert: vi.fn() };
     const data = stockListPageData(store);
@@ -357,8 +365,10 @@ describe('stock list grouped-first behavior', () => {
     await Promise.resolve();
     await Promise.resolve();
 
-    expect(listGroupedStockEntriesMock).not.toHaveBeenCalled();
-    expect(listStockEntriesMock).not.toHaveBeenCalled();
+    expect(listGroupedStockEntriesMock).toHaveBeenNthCalledWith(1, store, { expanded: false });
+    expect(listGroupedStockEntriesMock).toHaveBeenNthCalledWith(2, store, { expanded: true });
+    expect(listStockEntriesMock).toHaveBeenCalledTimes(1);
+    expect(listStockEntriesMock).toHaveBeenCalledWith(store);
     expect(fetchLocationsMock).not.toHaveBeenCalled();
     expect(getStockEntryMock).toHaveBeenCalledWith(store, 'item-100');
     expect(returnVisit.entries[0].quantity).toBe(2);