don't block chat when collecting instructions fail (#306161)

Author: aeschli

src/vs/workbench/contrib/chat/browser/widget/chatWidget.ts

@@ -2819,13 +2819,16 @@ export class ChatWidget extends Disposable implements IChatWidget {
 			this.logService.debug(`ChatWidget#_autoAttachInstructions: skipped, autoAttachReferences is disabled`);
 			return;
 		}
-
-		this.logService.debug(`ChatWidget#_autoAttachInstructions: prompt files are enabled`);
-		const enabledTools = this.input.currentModeKind === ChatModeKind.Agent ? this.input.selectedToolsModel.userSelectedTools.get() : undefined;
-		const enabledSubAgents = this.input.currentModeKind === ChatModeKind.Agent ? this.input.currentModeObs.get().agents?.get() : undefined;
-		const sessionResource = this._viewModel?.model.sessionResource;
-		const computer = this.instantiationService.createInstance(ComputeAutomaticInstructions, this.input.currentModeKind, enabledTools, enabledSubAgents, sessionResource);
-		await computer.collect(attachedContext, CancellationToken.None);
+		try {
+			this.logService.debug(`ChatWidget#_autoAttachInstructions: prompt files are enabled`);
+			const enabledTools = this.input.currentModeKind === ChatModeKind.Agent ? this.input.selectedToolsModel.userSelectedTools.get() : undefined;
+			const enabledSubAgents = this.input.currentModeKind === ChatModeKind.Agent ? this.input.currentModeObs.get().agents?.get() : undefined;
+			const sessionResource = this._viewModel?.model.sessionResource;
+			const computer = this.instantiationService.createInstance(ComputeAutomaticInstructions, this.input.currentModeKind, enabledTools, enabledSubAgents, sessionResource);
+			await computer.collect(attachedContext, CancellationToken.None);
+		} catch (err) {
+			this.logService.error(`ChatWidget#_autoAttachInstructions: failed to compute automatic instructions`, err);
+		}
 	}
 
 	delegateScrollFromMouseWheelEvent(browserEvent: IMouseWheelEvent): void {