[FEATURE] Allow readline / emacs style shortcuts consistently

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

It would be great if common emacs bindings （^B, esc-b, etc.) would work in Claude Code. When editing prompts, it's often difficult to navigate around. Some things (like ^A) seem to work fine, but many do not.

Creating this to replace #29931, which got auto-closed.

Proposed Solution

I'd like to be able to use esc-b, esc-f, etc. to navigate forward and backwards when writing / editing prompts.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Interactive mode (TUI)

Use Case Example

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Additional Context

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