Feature Request: Pin and Favorite chat threads

Problem

Users currently lack a mechanism to easily save, organize, or access important conversations for quick retrieval.

Proposed Solution

• Introduce a "Pin" or "Favorite" feature for chat threads.
• Allow users to toggle the pinned status of a thread from the chat history list.
• Implement a dedicated "Pinned" section or filter in the UI for easy navigation.

This will improve user workflow by providing quick access to high-value or frequently referenced interaction threads.