The stdin loop's scratchpad-input branch ran before the palette branch
and silently dropped every byte except a handful of app-level chords,
so palette typing and Esc never reached the palette while a pad was
focused. Skip the pad-input branch whenever st.palette != nil.
closePalette also called repaintFocused() on cancel / no-op action
paths, which paints the empty focused-child slot (focusedID == "" while
a pad is focused) and leaves the palette's top border drawn over the
pad. Route those branches through a restoreView helper that picks
repaintFocusedPad when a pad is focused.
Switching from a pad to a child via the palette now clears the pad
focus and wipes the viewport, matching focusProcess's pad-exit path.
Adds a harness scenario (palette_over_scratchpad) that opens a pad,
opens the palette, types a query, and verifies that Esc leaves the
pad correctly repainted with no palette chrome lingering.
Harry Bayliss
81a8ac2ba0