feat: Add DeepResearchAgentConfig fields

PiperOrigin-RevId: 897373849

Author: Annhiluc

src/interactions/resources/interactions.ts

@@ -762,10 +762,23 @@ export interface ContentStop {
 export interface DeepResearchAgentConfig {
   type: 'deep-research';
 
+  /**
+   * Enables human-in-the-loop planning for the Deep Research agent. If set to true,
+   * the Deep Research agent will provide a research plan in its response. The agent
+   * will then proceed only if the user confirms the plan in the next turn. Relevant
+   * issue: b/482352502.
+   */
+  collaborative_planning?: boolean;
+
   /**
    * Whether to include thought summaries in the response.
    */
   thinking_summaries?: 'auto' | 'none';
+
+  /**
+   * Whether to include visualizations in the response.
+   */
+  visualization?: 'off' | 'auto';
 }
 
 /**