Feedback UI fixes and settings improvements

This release fixes several issues with the feedback UI and improves the settings page experience.

Feedback UI improvements #1774 - Set showFeedback default to true to match documentation, improved dark mode styling for feedback buttons, and updated the system prompt to prevent multiple generative UI widgets per response. (Author: @adaam2)
Settings page with tabs routing #1747 - Improved the settings page with tabbed routing and logging API integration. (Author: @adaam2)