- Apply dark blue color scheme (#0f172a, #1e293b, #334155) throughout UI
- Update header with blue gradient and Obsidian branding
- Add missing toolbar buttons: Auto-refresh, Seed Data, Search filter
- Implement action buttons (Download, Delete) in artifacts table
- Add client-side search/filtering functionality
- Update app to support sim_source_id field in database
- Move quickstart scripts to repository root for easier access
- Apply dark theme to tables, tabs, and all Material components
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Co-Authored-By: Claude <noreply@anthropic.com>
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