Use process.stdout dimensions for terminal-aware prompt#10
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evantahler merged 1 commit intomainfrom Feb 18, 2026
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Replace unreliable Bun.env.COLUMNS/LINES with process.stdout.columns/rows to detect actual terminal size at runtime. Add fallback defaults (80x24) for non-TTY environments. Improve prompt to instruct agent to keep Markdown output within terminal width to avoid wrapping. Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
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Summary
Updates the system prompt to use reliable terminal dimensions (
process.stdout.columnsandprocess.stdout.rows) instead of environment variables. Adds fallback defaults for non-TTY environments and improves the instruction to ensure Markdown output fits within the terminal width.Changes
Bun.env.COLUMNS/LINESwithprocess.stdout.columns/rowsTesting
Existing tests pass (pre-existing failures in CLI test unrelated to this change).
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