Streamed responses no longer insert real newlines at terminal width —
logical lines are emitted whole and the terminal soft-wraps them, so
highlight-copy rejoins the full line (emulators only keep linebreaks
the app actually printed). This is the CLI equivalent of the TUI's
selection copy, which reads logical source lines from its screen
buffer. TTFT perception is preserved by mirroring the unfinished
line's tail into the spinner status text instead of chunk-printing.
/copy now prefers OSC 52 when running over SSH (SSH_CONNECTION /
SSH_TTY / SSH_CLIENT) — native tools there write the REMOTE clipboard,
which is never what the user wants. The CLI's OSC 52 writer also gains
tmux/screen DCS passthrough wrapping, mirroring the TUI's
wrapForMultiplexer. Fixes#31528 for the CLI surface.
Sabotage-verified: restoring the old chunk emitter fails 3 of the new
tests (hard-wrap detection, spinner mirror, unbreakable-run split).
Streamed response text carried a 4-space _STREAM_PAD indent and the
final-response Rich Panel used padding=(1, 4), so every line selected
out of the terminal came with leading whitespace. Both now render
flush-left (pad empty, panel padding=(1, 0)); the table-realignment
width budgets were widened to match.
/copy now writes the ORIGINAL message text through native clipboard
tools (pbcopy / PowerShell Set-Clipboard via base64 / wl-copy / xclip /
xsel — same fallback chain as the TUI's writeClipboardText), falling
back to OSC 52 only when no native backend succeeds. This is the
TUI-equivalent answer to soft-wrap mangling: the clipboard gets the raw
text, not the rendered layout.
