[FEATURE] Add a command to display ONLY user prompts

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

When a task is extremely long and contains numerous AI actions, I want to find ONLY my prompts, which is nearly impossible. Not because of the requested highlighting: https://github.com/anthropics/claude-code/issues/4385 and https://github.com/anthropics/claude-code/issues/6882, but because of the large conversation, which is difficult to scroll through.
I'd like to have some sort of filtering to display only my messages. Or have a list of messages by only first lines of them and jump like anchors in a web.

Proposed Solution

I'd like to have a command like /filter or /jump that displays a numbered list of the first lines of each message, with User/AI highlighted. I can press enter, and chat will take me to the top of that message.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

CLI commands and flags

Use Case Example

I'm working on an UX/UI feature. Initial implementation is straightforward. However, many test cases exist for various devices. As a result, writing e2e cases requires a significant amount of time and context. Frequently, the results are subpar. AI occasionally experiences hallucinations. I once wrote all test cases, but AI ignored them. I'd rather not write them again. I just want to go back to my message and manually copy it to resend. But I can't find it any more.

Additional Context

_No response_