Refine sidebar project suggestion and picker styling

[Jay1]

Summary

• Updated project suggestion list container in Sidebar to use a more elevated, glass-like card style with rounded corners, border, and soft shadow for better visual separation.
• Restyled project suggestion buttons with a tighter icon treatment, bordered icon chip, improved spacing, tracking, and hover/focus states for clearer hierarchy and interaction feedback.
• Removed dashed empty-state box style from suggestions panel and kept a cleaner inline empty/loading text layout.
• Unified “Pick folder” and “Add custom path” action buttons with matching border, translucent elevated background, and subtle inset shadow for a consistent visual language.
• Kept behavior unchanged: suggestions remain click-to-add and empty/error/loading states still render with the same conditional logic.

Testing

• Not run (no commands/tests executed in this request).

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 6f420e74-0df4-4a55-bf45-3656f694b5fa

📥 Commits

Reviewing files that changed from the base of the PR and between 2053d0f and 97c3d5e.

📒 Files selected for processing (1)

• apps/web/src/components/Sidebar.tsx

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch jcode/sleek-suggestion-box

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