GitHub Copilot CLI v1.0.21

2026-04-07 - Add copilot mcp command for managing MCP servers - Spinner no longer appears stuck when a long-running async shell command is active - Enterprise GitHub URL input in the login flow now...

2026-04-07 - Add copilot mcp command for managing MCP servers - Spinner no longer appears stuck when a long-running async shell command is active - Enterprise GitHub URL input in the login flow now accepts keyboard input and submits on Enter - Slash command picker no longer flickers or shifts the input while filtering - Timeline no longer goes blank when content shrinks (e.g., after cancelling or tool completion) - Plan mode timeline display shows user text without a redundant "Plan" prefix - Reduce memory usage by automatically shutting down shell sessions that are no longer needed - Hooks configured with PascalCase event names now receive VS Code-compatible snakecase payloads with hookeventname, sessionid, and ISO 8601 timestamps