Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.changeset/fair-falcons-search.md:
- Line 5: Update the changeset description string that currently reads "Improved
**ix-menu** accessibility by implementing the w3c menubar pattern, adding better
keyboard navigation and screenreader suppport." — fix the typo "suppport" →
"support" and capitalize the acronym "w3c" → "W3C" so the sentence becomes
"Improved **ix-menu** accessibility by implementing the W3C menubar pattern,
adding better keyboard navigation and screenreader support." Reference the same
changeset entry text in .changeset/fair-falcons-search.md to make the edits.
- Around line 1-5: The changeset for ix-menu is marked as patch but the
component adds new public API (new `@Prop/`@Event/@Method and exported interfaces
under packages/core/src/components/menu/*), so update
.changeset/fair-falcons-search.md to change the release type from patch to minor
and clearly list the `@siemens/ix` package; only add a "Fixes `#4304`" footer if the
PR/commit is actually linked to issue `#4304` (confirm the PR/issue connection
before adding that line).

In `@packages/core/src/components/menu-category/menu-category.tsx`:
- Around line 34-38: The helper createSequentialId currently increments its
parameter (sequenceId++) and callers also pass a post-incremented variable,
causing a redundant mutation; change createSequentialId to not mutate its input
(return `${prefix}-${sequenceId}`) and leave call-sites such as the usage with
categorySequenceId in menu-category.tsx and similar in menu-item.tsx using
sequenceId++ intact so the increment only happens at the call site; update the
createSequentialId implementation (and any docs/tests) to reflect the
non-mutating behavior.

In `@packages/core/src/components/menu-item/menu-item.tsx`:
- Around line 130-134: The new public API surface includes setTabIndex() (the
async method decorated with `@Method`() that sets hostTabIndex) but lacks
JSDoc/@since; either make it intentionally public by adding a JSDoc block above
setTabIndex() that documents the method and includes a `@since` tag with the
correct version, description and intended usage, or if it is internal plumbing
for roving tabindex, remove the `@Method`() decorator (and keep the method private
or rename to _setTabIndex) so it does not appear on the Stencil public surface;
update references to setTabIndex accordingly.
- Around line 218-233: getAriaLabel can produce "undefined …" when neither label
nor menuCategoryLabel is set; update getAriaLabel to compute a safe baseLabel
(e.g., const baseLabel = this.label ?? this.menuCategoryLabel ??
this.hostElement.textContent?.trim()) and use that instead of this.label when
building the distinct-tooltip branch; if baseLabel is falsy, return just
this.tooltipText (or undefined if tooltipText is also falsy) so you never
concatenate "undefined" with the tooltipText. Ensure changes are made inside the
getAriaLabel method and reference inheritAriaAttributes, tooltipText, label,
menuCategoryLabel, and hostElement.textContent.

In `@packages/core/src/components/menu/menu.tsx`:
- Around line 639-666: Fix the spelling typo in the comment above
updateMenuItemPositionMetadata: change "sepparated" to "separated" to improve
readability; locate the comment that reads "// item positions and menu size has
to be set manually because slotted items and utility controls are sepparated
into two groups" and update it accordingly (function:
updateMenuItemPositionMetadata, variable: allMenuItems).
- Around line 753-756: The switch branch handling 'End' indexes the last element
with items[items.length - 1]; change it to use the modern .at(-1) accessor for
clarity and safety: update the call to this.updateRovingTabIndex(items,
items.at(-1) ? items.length - 1 : items.length - 1) (or keep the index logic but
use items.at(-1) for retrieving the element to focus) and replace
items[items.length - 1].focus() with const last = items.at(-1); if (last) {
this.updateRovingTabIndex(items, items.length - 1); last.focus(); } to avoid
manual length arithmetic and null access in the case handlers.

---

Outside diff comments:
In `@packages/core/src/components.d.ts`:
- Around line 2595-2690: The generated typings are missing `@since` tags for newly
added public API; add JSDoc `@since` entries to the source declarations for the
methods/props named setTabIndex and menuCategoryLabel so the generator emits the
version metadata. Locate the component/source declaration files that define the
IxMenuCategory/IxMenuItem APIs (the functions/properties setTabIndex and
menuCategoryLabel) and prepend appropriate /** `@since` x.y.z */ JSDoc to each
symbol (method signature for setTabIndex and the menuCategoryLabel prop
declaration) using the correct release version.

In `@packages/core/src/components/menu-category/test/menu-category.ct.ts`:
- Line 9: Add a new regressionTest named "accessibility" to menu-category.ct.ts
that uses makeAxeBuilder to scan the mounted component; specifically, mount the
same markup used by the existing "renders" test (an ix-application with ix-menu
and ix-menu-category containing two ix-menu-item children), await the component
to hydrate via page.locator('ix-menu-category'), run makeAxeBuilder({ page
}).analyze(), and assert that results.violations has length 0 using expect;
ensure you import makeAxeBuilder from '`@utils/test`' and keep the test signature
consistent with the existing regressionTest(async ({ mount, page }) => { ... }).

In `@packages/core/src/components/toast/tests/toast.ct.ts`:
- Around line 19-171: Add a new regressionTest named 'accessibility' that mounts
the component (reuse the same mount pattern used in the 'renders' test), uses
makeAxeBuilder(page) to run an axe scan (include the toast element/selector),
stores the result in accessibilityScanResults, and assert
accessibilityScanResults.violations is an empty array; reference the existing
regressionTest helper and makeAxeBuilder, and place the test alongside the other
tests in this file so the repo's a11y gate is satisfied.
- Around line 71-72: The tests currently use page.waitForTimeout(...) (e.g., the
fixed 500ms sleeps) which makes them timing-sensitive; replace each sleep with
state-based waits that observe the component: use Playwright's auto-retry
assertions like await expect(menuLocator).toBeVisible() / toBeHidden() or await
expect(toastLocator).toHaveAttribute(...) for attribute changes, and use
expect.poll() for the pause/resume API checks instead of fixed timeouts; update
the places calling page.waitForTimeout to wait on the toast/menu locators or the
pause/resume observable state (referencing the existing page.waitForTimeout
calls, the toast/menu locators, and the pause/resume checks) so tests wait on
component state not the clock.