[FEATURE] Add setting to disable input autocomplete/predictive suggestions

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

Claude Code displays a predictive suggestion in the terminal input field based on conversation context. While useful in general, this feature is disruptive in educational or quiz scenarios where the suggestion reveals the expected answer before the user has a chance to respond.

Proposed Solution

Add setting to disable input autocomplete/predictive suggestions

Alternative Solutions

None currently available. Starting to type before the suggestion renders partially mitigates it but does not prevent it.

Priority

Medium - Would be very helpful

Feature Category

Configuration and settings

Use Case Example

A user is working through an accessibility engineering curriculum built on Claude Code. The instructor asks:

▎ "Who are the three audiences for an accessibility audit report?"

Before the user types a single character, the input field suggests:

▎ engineers, product managers, legal/compliance

The user sees the answer, types it, and moves on — having learned nothing. The comprehension check that was designed to surface knowledge gaps is bypassed entirely.

This same failure mode applies to any quiz, interview prep tool, flashcard system, or Socratic teaching workflow built on Claude Code.

Additional Context

<img width="622" height="154" alt="Image" src="https://github.com/user-attachments/assets/0fa395b4-8b78-4d7c-a42b-cf3009683260" />