TUI text garbles when backspacing back to agents view; maximizing window forces redraw

Bug

When navigating from a subagent view back to the agents list via backspace, rendered text becomes garbled / overlapping. Workaround: maximize the terminal window — triggers a resize event that forces a full repaint and clears the corruption.

Repro

1. Open Claude Code, dispatch a subagent (Agent tool or /agents).
2. Navigate into the agent's view.
3. Press backspace to return to the agents list.
4. Observe stale / overlapping characters on screen.
5. Maximize the terminal window → screen redraws cleanly.

Expected

View transition should issue a full screen clear + repaint, not leave stale cells behind.

Environment

• Claude Code: 2.1.142
• OS: Windows 11 Pro 10.0.26200
• Shell: bash (Git Bash / MSYS)

Notes

Suggests the agents-view back-navigation path skips the full-redraw step that other view transitions do. Ctrl+L does not always clear it; only a true terminal resize event reliably forces the repaint.