Update logos and add Cua Bot branding

[essi-304]

Summary

• Update Cua, Cua Bench, and Lume logos with fixed aspect ratios
• Add Cua Bot card to README "Choose Your Path" section
• Add Cua Bot logo files for docs site
• Update dropdown menu to use dedicated Cua Bot logo
• Increase dropdown icon sizes for better visibility

Changes

• img/ - Updated main logo SVGs
• docs/src/assets/ - Updated all product logo SVGs, added Cua Bot logos
• docs/public/img/ - Updated public icon SVGs, added Cua Bot icons
• docs/src/components/custom-header.tsx - Use Cua Bot logo in dropdown, increased icon sizes
• README.md - Added Cua Bot card below Cua, Cua Bench, and Lume cards

Test plan

• Verify logos display correctly in light mode
• Verify logos display correctly in dark mode
• Verify dropdown menu shows correct icons for all products
• Verify README renders correctly on GitHub

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Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview, Comment	Feb 12, 2026 11:49am

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