[FEATURE] Add option to disable auto-scroll after responses

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

In sessions with many prompts and responses, the current auto-scroll behavior makes it difficult to:

1. Review previous prompts and responses while Claude is generating new output
2. Compare current output with earlier responses in the conversation
3. Locate and reference the most recent prompt after a response completes

The forced scroll-to-bottom after each response interrupts workflow when trying to review conversation history.

Proposed Solution

Add a toggle setting (e.g., in preferences or a toolbar button) to disable auto-scroll. When disabled:

• User maintains their current scroll position during and after Claude's responses
• User can manually scroll to latest output when ready
• Setting persists across sessions

Alternative Solutions

A "scroll lock" toggle button that temporarily prevents auto-scroll during active review.

Priority

High - Significant impact on productivity

Feature Category

CLI commands and flags

Use Case Example

As an engineering manager reviewing deployment configurations, I often need to:

1. Ask Claude to generate/modify multiple config files
2. Compare new outputs with previous versions earlier in the conversation
3. Reference specific prompts I made 5-10 exchanges ago

Currently, I have to fight the auto-scroll to stay positioned at earlier parts of the conversation.

Additional Context

_No response_