When the terminal shrinks, already-printed box-drawing rules (response,
reasoning, streaming TTS, background-task Panels) reflow into multiple
narrower rows — visible as duplicated horizontal separators / ghost
lines in scrollback. Similarly, prompt_toolkit redraws a fresh status
bar on SIGWINCH on top of one the terminal just reflowed, producing
double-bar artifacts on column shrink.
Two surgical changes:
1. Decorative scrollback boxes now use a new
`HermesCLI._scrollback_box_width()` helper that clamps to
`max(32, min(width, 56))`. The live TUI footer is unaffected and still
uses the full width. Covers: streaming response box (open + close),
reasoning box (open + close, both streaming and post-stream paths),
streaming-TTS box close, final-response Rich Panel, and the
background-task Rich Panel.
2. `_recover_after_resize()` now also sets a new
`_status_bar_suppressed_after_resize` flag so the dynamic status bar
and both input separator rules stay hidden until the next user input.
The flag is cleared in the process loop the moment the user submits
their next prompt, restoring chrome cleanly.
Tests:
- New `test_input_rules_hide_after_resize_until_next_input` covers the
flag's effect on rule heights.
- New `test_scrollback_box_width_caps_to_resize_safe_value` covers the
helper at floor / cap / mid-range / overflow.
- Existing resize-recovery test extended to assert the flag flips.
Refs: #18449#19280#22976
Salvage of #24403.
Co-authored-by: Szymonclawd <szymonclawd@mac.home>
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