feat: add 410 error handling, progress messages, touch targets, and tests (refs #145)

- Handle poll errors including 410 Gone in useManualExtraction hook
- Add specific progress stage messages (Preparing/Processing/Mapping/Complete)
- Enforce 44px minimum touch targets on all interactive elements
- Add tests for inline editing, mobile fullscreen, and desktop modal layouts

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

frontend/src/features/maintenance/components/MaintenanceScheduleReviewScreen.test.tsx

@@ -7,6 +7,23 @@ import { render, screen, fireEvent } from '@testing-library/react';
 import { MaintenanceScheduleReviewScreen } from './MaintenanceScheduleReviewScreen';
 import type { MaintenanceScheduleItem } from '../../documents/hooks/useManualExtraction';
 
+// Mock matchMedia for responsive tests
+function mockMatchMedia(matches: boolean) {
+  Object.defineProperty(window, 'matchMedia', {
+    writable: true,
+    value: jest.fn().mockImplementation((query: string) => ({
+      matches,
+      media: query,
+      onchange: null,
+      addListener: jest.fn(),
+      removeListener: jest.fn(),
+      addEventListener: jest.fn(),
+      removeEventListener: jest.fn(),
+      dispatchEvent: jest.fn(),
+    })),
+  });
+}
+
 // Mock the create hook
 const mockMutateAsync = jest.fn();
 jest.mock('../hooks/useCreateSchedulesFromExtraction', () => ({
@@ -222,4 +239,70 @@ describe('MaintenanceScheduleReviewScreen', () => {
       await screen.findByText('Network error');
     });
   });
+
+  describe('Editing', () => {
+    it('should update item data via inline editing', async () => {
+      mockMutateAsync.mockResolvedValue([{ id: '1' }]);
+
+      render(<MaintenanceScheduleReviewScreen {...defaultProps} />);
+
+      // Click on the Months field of the third item (unique value: 12 mo)
+      const monthsField = screen.getByText('12 mo');
+      fireEvent.click(monthsField);
+
+      // Find the input that appeared and change its value
+      const monthsInput = screen.getByDisplayValue('12');
+      fireEvent.change(monthsInput, { target: { value: '24' } });
+      fireEvent.keyDown(monthsInput, { key: 'Enter' });
+
+      // Deselect items 1 and 2 to only create the edited item
+      const checkboxes = screen.getAllByRole('checkbox');
+      fireEvent.click(checkboxes[0]);
+      fireEvent.click(checkboxes[1]);
+
+      // Create the schedule and verify updated value is used
+      fireEvent.click(screen.getByRole('button', { name: /create 1 schedule$/i }));
+
+      expect(mockMutateAsync).toHaveBeenCalledWith({
+        vehicleId: 'vehicle-123',
+        items: [expect.objectContaining({
+          service: 'Cabin Air Filter Replacement',
+          intervalMonths: 24,
+        })],
+      });
+    });
+  });
+
+  describe('Responsive layout', () => {
+    afterEach(() => {
+      // Reset matchMedia after each test
+      mockMatchMedia(false);
+    });
+
+    it('should render in fullscreen mode on mobile viewports', () => {
+      // Simulate mobile: breakpoints.down('sm') returns true
+      mockMatchMedia(true);
+
+      render(<MaintenanceScheduleReviewScreen {...defaultProps} />);
+
+      // On mobile, dialog renders with fullScreen prop - check that the MuiDialog-paperFullScreen
+      // class is applied. MUI renders the dialog in a portal, so query from document.
+      const paper = document.querySelector('.MuiDialog-paperFullScreen');
+      expect(paper).not.toBeNull();
+    });
+
+    it('should render as modal dialog on desktop viewports', () => {
+      // Simulate desktop: breakpoints.down('sm') returns false
+      mockMatchMedia(false);
+
+      render(<MaintenanceScheduleReviewScreen {...defaultProps} />);
+
+      // On desktop, dialog should NOT have fullScreen class
+      const fullScreenPaper = document.querySelector('.MuiDialog-paperFullScreen');
+      expect(fullScreenPaper).toBeNull();
+
+      // But the dialog should still render
+      expect(screen.getByText('Extracted Maintenance Schedules')).toBeInTheDocument();
+    });
+  });
 });

frontend/src/features/maintenance/components/MaintenanceScheduleReviewScreen.tsx

@@ -117,10 +117,10 @@ const InlineField: React.FC<InlineFieldProps> = ({ label, value, type = 'text',
             if (e.key === 'Escape') handleCancel();
           }}
         />
-        <IconButton size="small" onClick={handleSave} color="primary">
+        <IconButton size="small" onClick={handleSave} color="primary" sx={{ minWidth: 44, minHeight: 44 }}>
           <CheckIcon sx={{ fontSize: 16 }} />
         </IconButton>
-        <IconButton size="small" onClick={handleCancel}>
+        <IconButton size="small" onClick={handleCancel} sx={{ minWidth: 44, minHeight: 44 }}>
           <CloseIcon sx={{ fontSize: 16 }} />
         </IconButton>
       </Box>
@@ -134,6 +134,7 @@ const InlineField: React.FC<InlineFieldProps> = ({ label, value, type = 'text',
         alignItems: 'center',
         gap: 0.5,
         cursor: 'pointer',
+        minHeight: 44,
         '&:hover .edit-icon': { opacity: 1 },
       }}
       onClick={() => setIsEditing(true)}
@@ -293,7 +294,7 @@ export const MaintenanceScheduleReviewScreen: React.FC<MaintenanceScheduleReview
                   <Checkbox
                     checked={item.selected}
                     onChange={() => handleToggle(index)}
-                    sx={{ mt: -0.5, mr: 1 }}
+                    sx={{ mt: -0.5, mr: 1, '& .MuiSvgIcon-root': { fontSize: 24 }, minWidth: 44, minHeight: 44 }}
                     inputProps={{ 'aria-label': `Select ${item.service}` }}
                   />
                   <Box sx={{ flex: 1, minWidth: 0 }}>
@@ -379,7 +380,7 @@ export const MaintenanceScheduleReviewScreen: React.FC<MaintenanceScheduleReview
               onClick={handleCreate}
               disabled={selectedCount === 0 || createMutation.isPending}
               startIcon={createMutation.isPending ? <CircularProgress size={16} /> : <CheckIcon />}
-              sx={{ order: isMobile ? 1 : 2, width: isMobile ? '100%' : 'auto' }}
+              sx={{ minHeight: 44, order: isMobile ? 1 : 2, width: isMobile ? '100%' : 'auto' }}
             >
               {createMutation.isPending
                 ? 'Creating...'