feat(client): 入库/出库加搜索框，入库/出库/库存加刷新按钮

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YZ4DskSRKsSiheQonFtQvx

client/lib/screens/inventory/inventory_list_screen.dart

@@ -677,6 +677,13 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
                                 ColumnPrefs.save(_screenId, v);
                               },
                             ),
+                            IconButton(
+                              tooltip: '刷新',
+                              icon: const Icon(Icons.refresh, size: 20),
+                              onPressed: () => ref
+                                  .read(inventoryListProvider.notifier)
+                                  .reload(),
+                            ),
                           ],
                         ),
                       ],
@@ -712,6 +719,13 @@ class _InventoryListScreenState extends ConsumerState<InventoryListScreen> {
                           ColumnPrefs.save(_screenId, v);
                         },
                       ),
+                      const SizedBox(width: 8),
+                      OutlinedButton.icon(
+                        onPressed: () =>
+                            ref.read(inventoryListProvider.notifier).reload(),
+                        icon: const Icon(Icons.refresh, size: 16),
+                        label: const Text('刷新'),
+                      ),
                       const Spacer(),
                     ],
                   );