Include model info in chat input aria label (microsoft#273160)

Author: Copilot

src/vs/workbench/contrib/chat/browser/chatInputPart.ts

@@ -520,6 +520,7 @@ export class ChatInputPart extends Disposable implements IHistoryNavigationWidge
 			if (this._currentLanguageModel?.metadata.name) {
 				this.accessibilityService.alert(this._currentLanguageModel.metadata.name);
 			}
+			this._inputEditor?.updateOptions({ ariaLabel: this._getAriaLabel() });
 		}));
 		this._register(this.chatModeService.onDidChangeChatModes(() => this.validateCurrentChatMode()));
 		this._register(autorun(r => {
@@ -797,6 +798,11 @@ export class ChatInputPart extends Disposable implements IHistoryNavigationWidge
 		if (verbose) {
 			kbLabel = this.keybindingService.lookupKeybinding(AccessibilityCommandId.OpenAccessibilityHelp)?.getLabel();
 		}
+
+		// Include model information if available
+		const modelName = this._currentLanguageModel?.metadata.name;
+		const modelInfo = modelName ? localize('chatInput.model', ", {0}. ", modelName) : '';
+
 		let modeLabel = '';
 		switch (this.currentModeKind) {
 			case ChatModeKind.Agent:
@@ -812,10 +818,10 @@ export class ChatInputPart extends Disposable implements IHistoryNavigationWidge
 		}
 		if (verbose) {
 			return kbLabel
-				? localize('actions.chat.accessibiltyHelp', "Chat Input {0} Press Enter to send out the request. Use {1} for Chat Accessibility Help.", modeLabel, kbLabel)
-				: localize('chatInput.accessibilityHelpNoKb', "Chat Input {0} Press Enter to send out the request. Use the Chat Accessibility Help command for more information.", modeLabel);
+				? localize('actions.chat.accessibiltyHelp', "Chat Input {0}{1} Press Enter to send out the request. Use {2} for Chat Accessibility Help.", modelInfo, modeLabel, kbLabel)
+				: localize('chatInput.accessibilityHelpNoKb', "Chat Input {0}{1} Press Enter to send out the request. Use the Chat Accessibility Help command for more information.", modelInfo, modeLabel);
 		} else {
-			return localize('chatInput.accessibilityHelp', "Chat Input {0}.", modeLabel);
+			return localize('chatInput.accessibilityHelp', "Chat Input {0}{1}.", modelInfo, modeLabel);
 		}
 	}