[FEATURE] Terminal-aware prompt character or a configuration option for it

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

I was using Claude Code on the Linux Console to help debug various TERM related issues with my shell configuration. I was very pleasantly surprised at how well CC's TUI worked in such a graphically constrained environment, but noticed an issue: CC's prompt character rendered as a small solid rectangle rather than the usual ❯ because that character isn't available in the default bitmap font which used by the console.

Proposed Solution

Most other characters I could see gracefully degraded to a more common ASCII character (eg. ● to *), and it would be great if the prompt could degrade to, eg. >.

Failing that, it would be helpful to have a configuration option to set the prompt character to use.

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

Interactive mode (TUI)

Use Case Example

Using Claude Code's TUI on the Linux Console.

Additional Context

_No response_