Enable chat "move" commands on empty sessions (microsoft#183895)

* Enable chat "move" commands on empty sessions
and also imported sessions

* Fix command name

Author: roblourens

src/vs/workbench/contrib/chat/browser/actions/chatImportExport.ts

@@ -73,7 +73,7 @@ export function registerChatExportActions() {
 				id: 'workbench.action.chat.import',
 				title: {
 					value: localize('chat.import.label', "Import Session") + '...',
-					original: 'Export Session...'
+					original: 'Import Session...'
 				},
 				category: CHAT_CATEGORY,
 				precondition: CONTEXT_PROVIDER_EXISTS,

src/vs/workbench/contrib/chat/common/chatServiceImpl.ts

@@ -218,11 +218,13 @@ export class ChatService extends Disposable implements IChatService {
 	}
 
 	getHistory(): IChatDetail[] {
-		const sessions = Object.values(this._persistedSessions);
+		const sessions = Object.values(this._persistedSessions)
+			.filter(session => session.requests.length > 0);
 		sessions.sort((a, b) => (b.creationDate ?? 0) - (a.creationDate ?? 0));
 
 		return sessions
 			.filter(session => !this._sessionModels.has(session.sessionId))
+			.filter(session => !session.isImported)
 			.map(item => {
 				return <IChatDetail>{
 					sessionId: item.sessionId,
@@ -547,9 +549,7 @@ export class ChatService extends Disposable implements IChatService {
 			throw new Error(`Unknown session: ${sessionId}`);
 		}
 
-		if (model.getRequests().length && !model.isImported) {
-			this._persistedSessions[sessionId] = model.toJSON();
-		}
+		this._persistedSessions[sessionId] = model.toJSON();
 
 		model.dispose();
 		this._sessionModels.delete(sessionId);