* feat: add clickable terminal links with configurable open behavior
Add @xterm/addon-web-links to both passthrough and shell terminals,
enabling Cmd+Click on URLs. Users can configure whether links open
in a new browser tab (default) or the built-in browser panel via a
new setting in the Settings page.
* style: fix prettier formatting
* fix: address CodeRabbit review comments
- Extract applyTerminalLinkBehavior helper to reduce complexity
- Set default terminalLinkBehavior for first-time users in empty settings path
- Use storeApi.getState() for optimistic rollback to avoid stale closures
- Add beforeEach settings reset in E2E tests
- Use 4xx range assertion instead of hardcoded 500
* fix: return 400 for user settings validation errors
Add ErrValidation sentinel to user service and wrap validation errors
from apply* functions. Handler now returns 400 Bad Request instead of
500 Internal Server Error for invalid input. Update E2E test assertion
to enforce client error status (< 500).
* fix: remove cmd+click mention from terminal links description
* fix: mirror validation error handling in WS update path
* style: fix prettier formatting
José Almeida
06e5114174