Add smart search integration and context-aware responses

- Expand the description of the smart search integration feature to highlight its capabilities, including personalized search results, code snippet previews, and integration with the full Code Search product
- Add details on the context-aware responses feature, including search result selection, context chips, and background searches for additional context from files, symbols, remote repos, and web pages

Author: jdorfman

docs/cody/chat/features.mdx

@@ -27,12 +27,29 @@ When a user submits a query in Chat, intent detection:
 
 ## Smart search integration
 
-Provides lightweight code search capabilities directly within the chat interface.
+Enhances Sourcegraph's Chat experience by providing lightweight code search capabilities directly within the chat interface. This feature simplifies developer workflows by offering quick access to code search without leaving the chat environment. The integration delivers personalized search results ranked by your contribution history, with frequently accessed repositories appearing higher in results. Users can view code snippets with relevant context and open files directly in their editor.
+
+Search results automatically become available as context for follow-up queries, with flexible controls for selecting which results to include. While optimized for keyword-style queries and searching across a few repositories, this integration complements rather than replaces the full [Code Search](/code-search) product, which remains the recommended tool for comprehensive enterprise-wide code search.
 
 ## Context-aware responses
 
 Search results can be automatically used as context for follow-up queries.
 
+### Search responses
+
+* Search results can be used directly as context for follow-up queries
+* Users can select which search results to include as context using checkboxes
+* By default, all search results are added as context
+* A context chip shows the number of search results being used (e.g., "10 code search results")
+* Users can remove the context chip if they don't want to use it for follow-ups
+
+### Chat responses
+
+* Performs background searches for context
+* Retrieves full context from files, symbols, remote repos,  web pages
+* Can execute terminal commands (with permission) for additional context
+* Creates personal notes usable across chat sessions
+* Pulls in [OpenCtx](/cody/capabilities/openctx) providers for additional context
 
 ## Default context