🎨 Palette: [UX improvement] Replace clear annotation link with button

[sheepdestroyer]

💡 What: Replaced the non-semantic <a href="#"> element with a native <button type="button"> element for the "clear" annotation action in the dataset visualizer.
🎯 Why: Using <a href="#"> causes the browser to unintentionally scroll to the top of the page when clicked. Using a semantic <button> prevents this unexpected jump, maintaining the user's context in the long list, while retaining the exact same visual appearance through inline CSS resets.
📸 Before/After: Visual appearance is unchanged (inline styles replicate the link appearance).
♿ Accessibility: Improves semantics for screen readers by identifying an interactive action as a button rather than a navigation link.

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PR created automatically by Jules for task 9579450888416798936 started by @sheepdestroyer

Summary by Sourcery

Replace the annotation clear link with a semantically appropriate button to preserve user context and improve accessibility.

Bug Fixes:

• Prevent the annotation clear action from unexpectedly scrolling the visualizer to the top of the page.

Enhancements:

• Use a semantic button for clearing annotations while preserving the existing visual appearance and improving accessibility.

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Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

The dataset visualizer now uses a native button for clearing annotations, eliminating the link’s unintended page-top navigation while preserving its appearance and improving action semantics for accessibility.

Sequence diagram for clearing a dataset annotation

sequenceDiagram
participant User
participant Visualizer
participant Browser
participant clearAnnotation
User->>Visualizer: Click clear button
Visualizer->>clearAnnotation: clearAnnotation(idx)
clearAnnotation-->>Visualizer: Annotation cleared
Note over Browser,Visualizer: No href navigation or page-top scroll

Loading

File-Level Changes

Change	Details	Files
Replace the clear-annotation navigation link with a semantic button while preserving its existing visual presentation.	Change the generated clear control from <a href="#"> to <button type="button">. Retain link-like styling through inline CSS resets, including transparent background, border removal, inherited typography, cursor, and underline. Keep the existing clearAnnotation(${idx}) click handler and annotation display flow unchanged.	router/static/visualizer.html

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Hey - I've reviewed your changes and they look great!

Sourcery assessment

Approved.

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