[FEATURE] Configurable number of visible lines before output collapse

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Currently, Claude Code's terminal output collapses to ~3 lines by default, with Ctrl+O toggling full verbose mode. There's no way to customize this so the information is hidden outside of verbose mode.

Proposed Solution

A configurable setting (e.g., maxCollapsedLines) would let users control how many lines are visible before collapsing, giving a useful preview without needing to toggle verbose mode.

A setting in ~/.claude/settings.json like:

{
"maxCollapsedLines": 8
}

Or similar, controlling the number of lines shown before the collapse/expand threshold kicks in.

Alternative Solutions

Can see most expanded information by toggling or setting verbose mode. But often overkill.

Priority

Low - Nice to have

Feature Category

Configuration and settings

Use Case Example

When a user is often interacting with API's that provide the same or similar outputs on the first few lines, this allows extending the window to see some useful information without have to use verbose mode.

Additional Context

_No response_