When Bun runs under AI agent environments (Claude Code, Cursor, Replit,
etc.), the elide-lines feature can confuse the assistant by hiding output.
This change automatically disables elide-lines when AI agents are detected.
The implementation uses the existing `Output.isAIAgent()` function which
checks for:
- AGENT=1 environment variable
- CLAUDECODE environment variable (Claude Code)
- REPL_ID environment variable (Replit)
Users can still manually override this behavior by explicitly setting
--elide-lines with any value.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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