adopt chatSessionOptions when clause (depends on microsoft/vscode#286814) (#2773)

Author: joshspicer

src/extension/chatSessions/vscode-node/copilotCloudSessionsProvider.ts

@@ -398,6 +398,7 @@ export class CopilotCloudSessionsProvider extends Disposable implements vscode.C
 					name: vscode.l10n.t('Custom Agents'),
 					description: vscode.l10n.t('Select which custom agent to use'),
 					items: agentItems,
+					when: `chatSessionOption.partnerAgents == ${DEFAULT_PARTNER_AGENT_ID}`
 				});
 			}
 
@@ -414,6 +415,7 @@ export class CopilotCloudSessionsProvider extends Disposable implements vscode.C
 					name: vscode.l10n.t('Model'),
 					description: vscode.l10n.t('Select which model to use'),
 					items: modelItems,
+					when: `chatSessionOption.partnerAgents == ${DEFAULT_PARTNER_AGENT_ID}`
 				});
 			}
 

src/extension/vscode.proposed.chatSessionsProvider.d.ts

@@ -49,26 +49,6 @@ declare module 'vscode' {
 		 */
 		readonly onDidCommitChatSessionItem: Event<{ original: ChatSessionItem /** untitled */; modified: ChatSessionItem /** newly created */ }>;
 
-		/**
-		 * DEPRECATED: Will be removed!
-		 * Creates a new chat session.
-		 *
-		 * @param options Options for the new session including an optional initial prompt and history
-		 * @param token A cancellation token
-		 * @returns Metadata for the chat session
-		 */
-		provideNewChatSessionItem?(options: {
-			/**
-			 * The chat request that initiated the session creation
-			 */
-			readonly request: ChatRequest;
-
-			/**
-			 * Additional metadata to use for session creation
-			 */
-			metadata?: any;
-		}, token: CancellationToken): ProviderResult<ChatSessionItem>;
-
 		// #endregion
 	}
 
@@ -382,6 +362,16 @@ declare module 'vscode' {
 		 * The selectable items within this option group.
 		 */
 		readonly items: ChatSessionProviderOptionItem[];
+
+		/**
+		 * A context key expression that controls when this option group picker is visible.
+		 * When specified, the picker is only shown when the expression evaluates to true.
+		 * The expression can reference other option group values via `chatSessionOption.<groupId>`.
+		 *
+		 * Example: `"chatSessionOption.models == 'gpt-4'"` - only show this picker when
+		 * the 'models' option group has 'gpt-4' selected.
+		 */
+		readonly when?: string;
 	}
 
 	export interface ChatSessionProviderOptions {