Fix Rich help terminal width

[AIlord1501]

Pull Request

Discussion: #1944

Description

Problem

When Typer renders help using Rich, CliRunner(..., terminal_width=...) was not respected.

The requested terminal width is stored in the Click context as ctx.terminal_width, but the Rich console was using MAX_WIDTH instead. This caused Rich-formatted help output to exceed the terminal width requested by CliRunner.

Fix

Pass ctx.terminal_width to Typer's Rich console when formatting help.

The existing MAX_WIDTH behavior remains the fallback when no explicit width is provided.

Tests

Added a regression test verifying that Rich-formatted help respects the terminal width supplied through CliRunner.

Full test suite:

• 1384 passed
• 18 skipped
• 2 xfailed

AI Disclaimer

This pull request was developed with assistance from an AI coding assistant (GPT-5.6 Luna).

AI transcript

Checklist

• This PR links to a GitHub Discussion for the proposed code change.
• I added tests for the change.
• The new or updated tests fail on the main branch and pass on this PR.
• Coverage stays at 100%.
• The documentation explains the change if needed.