! shell escape commands report COLUMNS=80 regardless of actual terminal width

! shell escape commands report COLUMNS=80 regardless of actual terminal width

When running ! tput cols or checking $COLUMNS via the ! shell escape in Claude Code, the reported terminal width is always 80 regardless of the actual PTY dimensions.

Observed behavior

• ! tput cols → always returns 80
• ! echo $COLUMNS → always returns 80
• process.stdout.columns (via Bash tool) → undefined or 80
• This happens at any zoom level or terminal width

Expected behavior

The ! shell escape should inherit the PTY dimensions from the parent process. The PTY correctly reports its dimensions via TIOCGWINSZ — tput cols in a plain shell (outside CC) returns the correct value and updates on resize.

Impact

• The HUD/status line in CC cannot adapt to different terminal widths
• Any ! command that relies on terminal width for formatting produces wrong output
• Third-party tools launched via ! cannot detect available width

Environment

• macOS (Darwin 25.4.0, arm64)
• Claude Code v2.1.89
• Tested in: iTerm2, xterm.js (via Tauri/TUICommander)
• PTY resize signals (SIGWINCH) are correctly delivered — verified via tput cols in a plain shell within the same PTY before launching CC