The PTY may deliver a long URL across multiple chunks with enough delay
that the debounce fires between them, emitting a truncated URL. Fixed by:
1. Stripping trailing empty strings from split (artifact of trailing \n)
2. Deferring emission when the URL reaches the end of the buffer — a
confirmation timer (500ms) waits for more data before emitting
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
PTY hard-wraps long URLs (e.g. OAuth) with \r\n at column width, breaking
xterm.js link detection. This adds a UrlDetector that reassembles wrapped
URLs from the output stream and shows a non-intrusive floating toast with
an "Open" button. Auto-dismisses after 30s, no terminal layout impact.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
