[Feature Request] Add configurable tool output fold threshold in interactive TUI

Bug Description
Feature request: setting to control tool-output fold threshold in interactive TUI.

Current behavior (v2.1.147): Bash/tool output is folded after ~3 lines, requiring ctrl+o to expand. There's no setting, env var, or slash command to default-expand.

Use case: startup banners, status dashboards, ASCII art, formatted reports, anything where the user wants to see the full output inline without an extra keypress every time. The 3-line limit forces these to either be trivially short or be hidden behind a fold.

Proposal: settings.json key like toolOutputExpandLevel (number of lines before folding) or expandToolOutput: true (always expand). User-configurable, defaults to current behavior so it's non-breaking.

Bonus: ANSI escape codes already render correctly inside expanded tool output, so this would also unblock truecolor banners/themes without forcing /dev/tty workarounds.

Environment Info

• Platform: darwin
• Terminal: WarpTerminal
• Version: 2.1.146
• Feedback ID: 92a2f656-da90-4f91-af01-7ad9b4063af6

Errors

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