optimize navbar space utilization for agent and model display

[ulivz]

Summary

The navbar should better utilize available space when displaying Agent Name and Model Name, only showing ellipsis (...) when space is truly insufficient.

Current Behavior

• Agent Name and Model Name badges are displayed with fixed max-width
• Text truncation happens prematurely even when navbar has available space
• Space utilization is not optimized for different screen sizes

Expected Behavior

• Dynamically adjust badge widths based on available navbar space
• Only truncate with ellipsis when absolutely necessary
• Prioritize full display when space allows
• Responsive behavior that adapts to container width

Suggested Implementation

• Use CSS flexbox with dynamic sizing
• Implement JavaScript-based width calculation
• Show full text when space permits
• Graceful degradation with ellipsis only when required

Code Location

tarko/agent-web-ui/src/standalone/navbar/Navbar.tsx lines 93-126