More welcome view states in the Chat Sessions view (#7772)

Fixes #259285

Author: alexr00

package.json

@@ -1885,6 +1885,21 @@
 				"when": "ReposManagerStateContext == RepositoriesLoaded && github:notificationCount == -1",
 				"contents": "%welcome.github.notifications.contents%"
 			},
+			{
+				"view": "workbench.view.chat.sessions.copilot-swe-agent",
+				"when": "workspaceFolderCount == 0",
+				"contents": "%welcome.pr.github.noFolder.contents%"
+			},
+			{
+				"view": "workbench.view.chat.sessions.copilot-swe-agent",
+				"when": "git.state == initialized && gitOpenRepositoryCount == 0 && workspaceFolderCount > 0 && git.parentRepositoryCount == 0",
+				"contents": "%welcome.pr.github.noRepo.contents%"
+			},
+			{
+				"view": "workbench.view.chat.sessions.copilot-swe-agent",
+				"when": "git.state == initialized && workspaceFolderCount > 0 && (git.parentRepositoryCount > 0 || gitOpenRepositoryCount > 0) && !github:hasGitHubRemotes",
+				"contents": "%welcome.chat.sessions.copilot-swe-agent.noGitHub.contents%"
+			},
 			{
 				"view": "workbench.view.chat.sessions.copilot-swe-agent",
 				"when": "ReposManagerStateContext == NeedsAuthentication && github:hasGitHubRemotes",

package.nls.json

@@ -397,6 +397,7 @@
 			"{Locked='](command:workbench.action.chat.open?%7B%22query%22%3A%22%23copilotCodingAgent%20%22%2C%22isPartialQuery%22%3Atrue%7D)'}"
 		]
 	},
+	"welcome.chat.sessions.copilot-swe-agent.noGitHub.contents": "Clone or open a GitHub repository to get started",
 	"languageModelTools.github-pull-request_issue_fetch.displayName": "Get a GitHub Issue or pull request",
 	"languageModelTools.github-pull-request_issue_summarize.displayName": "Summarize a GitHub Issue or pull request",
 	"languageModelTools.github-pull-request_notification_fetch.displayName": "Get a GitHub Notification",