[FEATURE] Clearly show what changes were made to a plan between iterations

Preflight Checklist

• [ ] 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

When in plan mode, Claude often comes up with a quite comprehensive plan and asks for comments. After submitting comments, Claude presents its updated plan, which oftern 80-90% identical to the previous one, but with some changes to accommodate the request.

It would be nice if it was clearly indicated what was removed, changed, added (similar to a code diff) to the plan since the previous version.

Proposed Solution

Either an inline indication or a side by side diff like view

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Interactive mode (TUI)

Use Case Example

Im planning a new feature, but dont want to read through the entire plan top-bottom when just minor changes has been made

Additional Context

_No response_