Bug (TUI): Titles persist in terminal after completing agentcore add

### Description

After completing `agentcore add x` flow (or CTRL + C to quit early), the title rendered by interactive experience persists in the terminal.

### Steps to Reproduce

1. run `agentcore add evaluator` (or any other valid option for agentcore add)
2. complete the TUI flow OR CTRL+C/ESC out of the experience
3. Title will remain in terminal screen

### Expected Behavior

Title disappears along with rest of rendered content after completion

### Actual Behavior

Title remains, while rest of content disappears

### CLI Version

_No response_

### Operating System

macOS

### Additional Context

_No response_