Feature Request: Keep plan visible in the UI after approval

Title: Feature Request: Keep plan visible in the UI after approval

Is this a BUG REPORT or FEATURE REQUEST?: Feature Request

Description

Right now, if you use plan mode (Shift+Tab) and approve a plan that Claude presents, the plan itself disappears from the UI. This makes it difficult to reference the plan's steps while Claude is executing them.

The behavior is also inconsistent. If you reject the plan by selecting "no", the plan remains visible in the conversation history, which is the desired behavior. The same should happen when a plan is approved.

Steps to Reproduce

1. Launch claude in your terminal.
2. Enter plan mode by pressing Shift+Tab.
3. Give Claude a prompt that generates a plan (e.g., Create a hello world app and run it).
4. Claude will present the plan and ask Would you like to proceed? (yes/no).
5. Select yes and press Enter.
6. Notice that the plan text is no longer on the screen or in your scrollback history.

Expected Behavior

When I select "yes" to approve a plan, the plan should remain on screen (in the terminal's scrollback buffer). This would allow me to reference the steps as Claude is working on them.

Current Behavior

The plan disappears from the UI as soon as it is approved, leaving me to remember the steps from memory. However, if I select "no", the plan correctly remains visible in the history.