🎨 Palette: Add ARIA labels and semantic buttons

[google-labs-jules]

🎨 Palette: Accessibility Improvements

What:
Added aria-label attributes to multiple icon-only buttons throughout the UI (+, 📷, 🤖, ✕, etc). Converted unsemantic interactive <div> and <span> tags used for close and remove controls into standard <button> tags with inline CSS resets to prevent visual regressions.

Why:
To drastically improve keyboard navigation and screen reader accessibility, ensuring that vision-impaired or keyboard-reliant users can successfully discover and understand the purpose of these interactive controls.

Accessibility:

• Added missing aria-labels.
• Swapped span/div for button for inherent keyboard focusability and semantic correctness.

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PR created automatically by Jules for task 14180252909119904031 started by @dqikfox

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Project	Deployment	Actions	Updated (UTC)
vision	Ready	Preview, Comment	Jun 25, 2026 12:12am

[google-labs-jules]

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