The MESHTERM_FULL_WIDTH reclaim reported the terminal one column wider than
probed, to draw a final column some terminals under-report. With the emoji
width now aligned to the terminal, that extra column pushes the frame past the
real screen edge and tears the layout. Remove it: the size probe is used as-is
again (_WidthExtendedOutput, _RECLAIM_LAST_COLUMN, _resolve_output, and the
MESHTERM_FULL_WIDTH gate all gone), and the app renders to prompt_toolkit's
default output. Drops tests/test_session_width.py with the feature.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Jean-Pierre MartineauandClaude Opus 4.8
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