[Feature]: Tappable and copyable URLs in the mobile terminal #26347

Problem: In the iOS app's terminal, URLs printed by CLI tools are neither tappable nor selectable. Login flows that print a URL and then wait for a code in the terminal (e.g. gcloud auth login --no-launch-browser, ~700 characters wrapped over ~16 lines) cannot be completed from the phone.

Expected: URLs in terminal output are detected, including across soft-wrapped lines, and open in the browser on tap. Alternatively, a long-press copies the URL or the selected text.

Workaround today: The agent writes the URL to a file and posts it as a link in the chat.

Environment: T3 Code iOS app, remote host on an Ubuntu VPS, terminal opened from a project thread.