🎨 Palette: Improve accessibility in visualizer annotation tools

[sheepdestroyer]

💡 What: Replaced <a href="#"> with a native <button type="button"> for clearing annotations, added aria-label to the note input, and ensured the save button has type="button".
🎯 Why: Using # links for JS actions causes the page to jump to the top when clicked, disrupting the user's flow. Buttons are semantically correct for actions. Added ARIA labels improve screen reader support.
📸 Before/After: Visuals remain identical as the button was styled with inline resets to look like a link.
♿ Accessibility: Screen readers will now announce the inputs properly, and keyboard navigation behaves semantically correctly without scrolling the page.

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PR created automatically by Jules for task 1456950515525397045 started by @sheepdestroyer

Summary by Sourcery

Improve visualizer annotation controls for accessible, predictable keyboard and screen-reader interaction.

Bug Fixes:

• Prevent annotation clearing from jumping the visualizer to the top by using a semantic button instead of an empty anchor.

Enhancements:

• Improve annotation tool accessibility with semantic controls, descriptive labels, and explicit non-submit button types while preserving the existing visual appearance.

Chores:

• Document the accessibility guidance for replacing empty anchors used for JavaScript actions.

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

The annotation UI now uses semantically appropriate, explicitly non-submitting buttons for JavaScript actions, adds an accessible name for the note input, and preserves the existing visual styling while preventing hash-link page jumps.

File-Level Changes

Change	Details	Files
Correct interactive control semantics and keyboard behavior for annotation actions.	Replaced the hash link used to clear annotations with a native button that invokes the existing handler without causing page navigation. Applied inline button resets and link-like styling to preserve the existing visual presentation.	router/static/visualizer.html
Improve accessible naming and explicit button behavior in the annotation form.	Added an accessible label to the review-note text input. Declared the save control as a non-submitting button.	router/static/visualizer.html
Document the accessibility lesson behind the implementation.	Recorded guidance to prefer native buttons for JavaScript actions and preserve appearance with CSS resets.	.Jules/palette.md

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Sourcery assessment

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