🎨 Palette: Accessible Anchor Buttons

[0m364]

💡 What: Added semantic roles and keyboard behavior to anchor tags (<a href="#">) being used as buttons for opening the OSINT modal.

🎯 Why: Screen readers previously announced these buttons as generic "links", causing confusion. Furthermore, keyboard-only users expect buttons to activate with the Spacebar, but default links only trigger on Enter. Pressing Spacebar previously caused unwanted page scrolling.

📸 Before/After: No visual changes. Behavior and semantics updated.

♿ Accessibility:

• Added role="button" and aria-haspopup="dialog" to the #sitrep-btn anchors to correctly identify them as dialog triggers.
• Mapped the Spacebar key to trigger the openModal action while preventing default scroll behavior, matching native <button> functionality.

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PR created automatically by Jules for task 2790979982845554396 started by @0m364

[google-labs-jules]

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