## Description After an invalid submission, the form shows a general error message and moves focus to the first invalid field. When several fields are invalid, users must move through the form to find the remaining errors. Add an error summary with links to the invalid fields. ## Tasks - List each invalid field and its error in the summary. - Link each summary item to its field. - Preserve the current field-level error messages and focus behavior. - Ensure the summary works with a keyboard and screen reader. ## Done when After an invalid submission, users can review all errors and jump directly to each affected field.