Add a /terminal command that will launch Claude's CLI but using Copilot endpoints

[TylerLeonhardt]

This way you can use your Copilot Subscription with the Claude Code CLI.

fixes microsoft/vscode#291384

[Copilot]

Pull request overview

This pull request adds a /terminal slash command to the Claude Agent that launches Claude's CLI configured to use GitHub Copilot endpoints. This allows users to leverage their Copilot subscription with the Claude Code CLI in a terminal environment.

Changes:

• Adds a new slash command (/terminal) that creates a terminal session with Claude CLI configured to proxy through Copilot Chat endpoints
• Extends the ClaudeLanguageModelServer to support both x-api-key and Authorization Bearer token authentication
• Updates documentation to reflect the new command

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 11 comments.

Show a summary per file

File	Description
src/extension/agents/claude/vscode-node/slashCommands/terminalCommand.ts	Implements the terminal slash command handler with CLI detection and server configuration
src/extension/agents/claude/vscode-node/slashCommands/test/terminalCommand.spec.ts	Comprehensive test suite for the terminal command covering CLI detection, terminal creation, and error handling
src/extension/agents/claude/vscode-node/slashCommands/index.ts	Registers the new terminal command in the slash commands index
src/extension/agents/claude/node/claudeLanguageModelServer.ts	Adds support for Authorization Bearer token authentication in addition to x-api-key
src/extension/agents/claude/AGENTS.md	Updates documentation to list the new /terminal command
package.json	Registers the command in VS Code contributions and chat session commands
package.nls.json	Adds localization string for the command title

Comments suppressed due to low confidence (1)

src/extension/agents/claude/vscode-node/slashCommands/test/terminalCommand.spec.ts:237

• There's no test coverage for error handling when the stream is undefined (Command Palette invocation). The implementation has a code path at lines 105-106 that uses vscode.window.showErrorMessage for errors when stream is undefined, but this scenario is not tested. Add a test to ensure error messages are shown correctly when invoked from the Command Palette and an error occurs.

		it('logs errors when terminal creation fails', async () => {
			// Make createTerminal throw an error
			testTerminalService.createTerminalSpy.mockImplementation(() => {
				throw new Error('Failed to create terminal');
			});

			const mockStream = new MockChatResponseStream();
			const errorSpy = vi.spyOn(mockLogService, 'error');

			await terminalCommand.handle('', mockStream, CancellationToken.None);

			expect(errorSpy).toHaveBeenCalled();
		});

[Copilot]

The TerminalSlashCommand creates a ClaudeLanguageModelServer instance that extends Disposable but never disposes of it. The server starts an HTTP server that should be properly disposed when no longer needed. Consider making TerminalSlashCommand extend Disposable and register the server for disposal, or dispose of it when appropriate (e.g., when the extension is deactivated).