hermes - 💡(How to fix) Fix persistent_output replay strips ANSI/Rich formatting after terminal resize

Summary

When display.persistent_output: true is set, terminal resize triggers _recover_after_resize → erase_screen() + _replay_output_history(). The replayed content is plain text only — all Rich Markdown rendering (tables, code blocks, bold, panels) is lost.

Root Cause

_record_output_history strips all ANSI escape codes before storing (cli.py ~line 1416):

clean = _ANSI_CONTROL_RE.sub("", str(text)).replace("\r", "").rstrip("\n")

So the history buffer only contains raw text. When replayed, Rich-rendered output (tables, borders, colors) is gone.

Additionally, _recover_after_resize sends \x1b[3J (erase saved lines), which wipes the terminal's native scrollback buffer (including iTerm2), leaving no fallback for the user to scroll up and see prior output.

Affected Config

display:
  final_response_markdown: render   # Rich Markdown enabled
  streaming: false                  # Rich Panel used for final response
  persistent_output: true

Expected Behavior

After resize, replayed history should preserve the same Rich formatting that was originally rendered — or at minimum, not erase the terminal's native scrollback (\x1b[3J) so the terminal's own scrollback buffer (iTerm2, Warp, etc.) acts as a fallback.

Suggested Fix

Store rendered ANSI output in _OUTPUT_HISTORY (before stripping), and replay with _pt_print(_PT_ANSI(entry)) instead of plain text. Alternatively, skip \x1b[3J so the terminal's native scrollback (iTerm2, Warp, etc.) acts as a fallback.

Environment

• Hermes Agent v0.13.0 (2026.5.7)
• macOS / iTerm2
• Python 3.11