test: cover image upload guidance

apps/web/src/components/organisms/AdminImageManager.stories.js

@@ -24,6 +24,16 @@ export const Processing = { args: { images: processingImages } };
 export const Failed = { args: { images: failedImages } };
 export const Saving = { args: { images, isSaving: true } };
 
+export const UploadGuidance = {
+  args: { images: [] },
+  play: async ({ canvasElement }) => {
+    const canvas = within(canvasElement);
+    const input = canvas.getByLabelText('Add images');
+    await expect(input).toHaveAttribute('aria-describedby', 'admin-image-upload-help');
+    await expect(canvas.getByText(/JPEG, PNG, or WebP images are accepted/)).toBeVisible();
+  },
+};
+
 export const EditAltTextWithKeyboard = {
   args: { images },
   play: async ({ canvasElement }) => {

docs/IMPLEMENTATION-STATUS.md

@@ -284,6 +284,7 @@ Remaining roadmap areas are approved external provider credentials/adapters, bro
 - Product identity and physical-copy selectors now include associated guidance describing the catalog and copy-level choices.
 - Review/list controls now explain active-copy requirements, cents units, and publication prerequisites through associated help text.
 - Image upload controls now expose accepted formats and the configured per-item limit through associated help text.
+- Image upload constraint guidance now has Storybook interaction coverage.
 
 ## Local Commands