feat(ui): Redesign blueprint browser cards #11534

[BikashAgarwala]

Implements a new, modern card design for the blueprints browser page, aligning it with the project's current UI standards. This change improves the visual hierarchy, layout, and user experience of browsing blueprints.

Closes #11534

Key Changes

• Replaced the previous list-style layout with a responsive CSS Grid for a multi-column view.
• Redesigned the internal card structure using Flexbox for a clean, modern layout with distinct sections for tags, title, and actions.
• Improved typography to create a clear visual hierarchy.
• Added a subtle hover effect for better user feedback.

Screenshots

Before (Old Design)

After (New Design - Light Mode)

After (New Design - Dark Mode)