[Bccorb]

Summary

The mouse wheel now scrolls, behaving exactly like the up and down arrow keys.

• Arrow keys and the wheel share App::scroll_line_up / scroll_line_down, so the wheel scrolls whatever has focus: the help screen, an open overlay (describe, command confirm, profile picker), or the active view's selection. A list behind an open overlay or help does not move.
• Mouse capture is enabled with the alternate screen, released while a CLI command runs (ui::terminal::suspend_tui) so the shell does not receive mouse escape sequences, restored on resume, and disabled on exit.
• Other mouse events (clicks, drags) are ignored.

Tradeoff

Capturing the mouse means plain click-and-drag no longer selects terminal text while the app runs. Most terminals bypass capture with a modifier held while dragging (Shift in most Linux terminals, Option in iTerm2, Fn in macOS Terminal). The README notes this under the controls.

Validation

• cargo fmt --all --check
• cargo clippy --all-targets -- -D warnings
• cargo test --all (230 passed), including new tests that a line of scroll moves the list selection within bounds and goes to help or an open overlay instead of the list behind it
• Not yet exercised by hand in a terminal