diff --git a/frontend/e2e/workflows/2-scan-adjust.spec.ts b/frontend/e2e/workflows/2-scan-adjust.spec.ts
new file mode 100644
index 00000000..904b2d64
--- /dev/null
+++ b/frontend/e2e/workflows/2-scan-adjust.spec.ts
@@ -0,0 +1,257 @@
+import { test, expect } from '@playwright/test';
+import * as auth from '../fixtures/auth';
+import * as assertions from '../utils/assertions';
+import * as helpers from '../utils/helpers';
+import { LOCAL_USERS, TEST_ITEMS } from '../fixtures/test-data';
+
+test.describe('Scan and Adjust Workflow', () => {
+  const BASE_URL = process.env.BASE_URL || 'http://localhost:3000';
+
+  test.beforeEach(async ({ page }) => {
+    // Navigate to app and login
+    await page.goto(BASE_URL);
+    await auth.loginWithLocalUser(page, LOCAL_USERS.admin, BASE_URL);
+    await assertions.assertUserAuthenticated(page, BASE_URL);
+
+    // Navigate to scanner page
+    await page.goto(`${BASE_URL}/scanner`);
+    await assertions.assertScannerReady(page);
+  });
+
+  test('should display scanner interface with camera view', async ({ page }) => {
+    await assertions.assertScannerReady(page);
+
+    // Verify camera controls
+    const zoomButton = page.locator('[data-testid="zoom-control"]');
+    const cameraIndicator = page.locator('[data-testid="camera-indicator"]');
+
+    await expect(zoomButton).toBeVisible();
+    await expect(cameraIndicator).toBeVisible();
+  });
+
+  test('should display scan input field', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await expect(scanInput).toBeVisible();
+    await expect(scanInput).toBeFocused();
+  });
+
+  test('should handle barcode scan and match to inventory item', async ({ page }) => {
+    // Simulate barcode scan by entering barcode in input
+    const scanInput = page.locator('[data-testid="scan-input"]');
+
+    // Enter first test item's barcode
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    // Should show stock adjustment form
+    await assertions.assertStockAdjustmentVisible(page, TEST_ITEMS[0].name);
+
+    // Verify item details are shown
+    const itemName = page.locator('[data-testid="adjustment-item-name"]');
+    await expect(itemName).toContainText(TEST_ITEMS[0].name);
+  });
+
+  test('should default to check-in operation', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    // Check-in radio should be selected
+    const checkInRadio = page.locator('[data-testid="operation-checkin"]');
+    await expect(checkInRadio).toBeChecked();
+  });
+
+  test('should allow switching between check-in and check-out', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    // Switch to check-out
+    const checkOutRadio = page.locator('[data-testid="operation-checkout"]');
+    await checkOutRadio.click();
+    await expect(checkOutRadio).toBeChecked();
+
+    // Switch back to check-in
+    const checkInRadio = page.locator('[data-testid="operation-checkin"]');
+    await checkInRadio.click();
+    await expect(checkInRadio).toBeChecked();
+  });
+
+  test('should allow quantity adjustment', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    // Change quantity
+    const quantityInput = page.locator('[data-testid="adjustment-quantity-input"]');
+    await quantityInput.fill('10');
+
+    // Verify value changed
+    const value = await helpers.getInputValue(page, '[data-testid="adjustment-quantity-input"]');
+    expect(value).toBe('10');
+  });
+
+  test('should reject invalid quantities', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    // Try invalid quantity
+    const quantityInput = page.locator('[data-testid="adjustment-quantity-input"]');
+    await quantityInput.fill('-5');
+
+    // Submit should be disabled or show error
+    const submitButton = page.locator('[data-testid="adjustment-submit"]');
+    if (await submitButton.isEnabled()) {
+      await submitButton.click();
+      const errorToast = page.locator('[data-testid="toast-error"]');
+      await expect(errorToast).toBeVisible({ timeout: 3000 });
+    }
+  });
+
+  test('should submit stock adjustment successfully', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    // Set quantity
+    const quantityInput = page.locator('[data-testid="adjustment-quantity-input"]');
+    await quantityInput.fill('5');
+
+    // Submit
+    const submitButton = page.locator('[data-testid="adjustment-submit"]');
+    await submitButton.click();
+
+    // Should show success message
+    const successToast = page.locator('[data-testid="toast-success"]');
+    await expect(successToast).toBeVisible({ timeout: 5000 });
+  });
+
+  test('should close adjustment form after successful submission', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    const quantityInput = page.locator('[data-testid="adjustment-quantity-input"]');
+    await quantityInput.fill('5');
+
+    const submitButton = page.locator('[data-testid="adjustment-submit"]');
+    await submitButton.click();
+
+    // Wait for success and form to close
+    const adjustmentForm = page.locator('[data-testid="stock-adjustment-form"]');
+    await expect(adjustmentForm).not.toBeVisible({ timeout: 5000 });
+
+    // Scanner input should be focused again
+    const scanner = page.locator('[data-testid="scan-input"]');
+    await expect(scanner).toBeFocused();
+  });
+
+  test('should handle unknown barcode', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill('999999999');
+    await scanInput.press('Enter');
+
+    // Should show error or create new item dialog
+    const errorOrDialog = page.locator(
+      '[data-testid="toast-error"], [data-testid="new-item-dialog"]'
+    );
+    await expect(errorOrDialog).toBeVisible({ timeout: 3000 });
+  });
+
+  test('should support multiple consecutive scans', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+
+    // First scan
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+    let adjustmentForm = page.locator('[data-testid="stock-adjustment-form"]');
+    await expect(adjustmentForm).toBeVisible();
+
+    // Complete first adjustment
+    const quantityInput = page.locator('[data-testid="adjustment-quantity-input"]');
+    await quantityInput.fill('5');
+    const submitButton = page.locator('[data-testid="adjustment-submit"]');
+    await submitButton.click();
+
+    // Wait for form to close
+    await expect(adjustmentForm).not.toBeVisible({ timeout: 5000 });
+
+    // Second scan
+    await scanInput.fill(TEST_ITEMS[1].barcode);
+    await scanInput.press('Enter');
+
+    // Second adjustment form should appear
+    adjustmentForm = page.locator('[data-testid="stock-adjustment-form"]');
+    await expect(adjustmentForm).toBeVisible();
+  });
+
+  test('should display item quantity history', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    // Check if history is displayed
+    const historySection = page.locator('[data-testid="adjustment-history"]');
+    if (await historySection.isVisible()) {
+      const historyItems = page.locator('[data-testid="history-item"]');
+      expect(await historyItems.count()).toBeGreaterThan(0);
+    }
+  });
+
+  test('should allow canceling adjustment', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    // Click cancel button
+    const cancelButton = page.locator('[data-testid="adjustment-cancel"]');
+    if (await cancelButton.isVisible()) {
+      await cancelButton.click();
+
+      // Form should close
+      const adjustmentForm = page.locator('[data-testid="stock-adjustment-form"]');
+      await expect(adjustmentForm).not.toBeVisible();
+    }
+  });
+
+  test('should display current inventory count', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    // Current quantity should be displayed
+    const currentQuantity = page.locator('[data-testid="current-quantity"]');
+    await expect(currentQuantity).toBeVisible();
+
+    const quantityText = await currentQuantity.textContent();
+    expect(quantityText).toMatch(/\d+/);
+  });
+
+  test('should show category in item details', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    const categoryDisplay = page.locator('[data-testid="item-category"]');
+    if (await categoryDisplay.isVisible()) {
+      const categoryText = await categoryDisplay.textContent();
+      expect(categoryText).toContain(TEST_ITEMS[0].category);
+    }
+  });
+
+  test('should clear scan input after successful operation', async ({ page }) => {
+    const scanInput = page.locator('[data-testid="scan-input"]');
+    await scanInput.fill(TEST_ITEMS[0].barcode);
+    await scanInput.press('Enter');
+
+    const quantityInput = page.locator('[data-testid="adjustment-quantity-input"]');
+    await quantityInput.fill('5');
+
+    const submitButton = page.locator('[data-testid="adjustment-submit"]');
+    await submitButton.click();
+
+    // Wait for form to close and input to clear
+    await expect(scanInput).toHaveValue('', { timeout: 5000 });
+  });
+});