Stale characters from a previous view sometimes linger on screen.
Mitigated in Session 244: `terminal.clear()` on resize events and on popup dismiss (picker/folder picker transition to hidden).
Root cause: ratatui's incremental diff can miss cells when the physical terminal state diverges from its buffer tracking.
Workaround: Ctrl+L forces a full screen redraw.
Key files: `src/tui_main/mod.rs` — event loop, `src/tui_main/render_impl.rs` — draw_frame
Stale characters from a previous view sometimes linger on screen.
Mitigated in Session 244: `terminal.clear()` on resize events and on popup dismiss (picker/folder picker transition to hidden).
Root cause: ratatui's incremental diff can miss cells when the physical terminal state diverges from its buffer tracking.
Workaround: Ctrl+L forces a full screen redraw.
Key files: `src/tui_main/mod.rs` — event loop, `src/tui_main/render_impl.rs` — draw_frame