Give prompts their own line to type into instead of the tag's tail

A search, pipe or Save prompt wrote its marker and answer onto the end of
the tag, so the tag's cursor, its selection, its 9P writes and a prompt
abandoned by a click all shared one buffer: the abandoned text stayed in
the tag and a 9P write landed inside the prompt. The answer is now its own
Text on the pane, typed in insert mode and shown on the notice band where
it was already drawn, and the tag never holds any of it.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 2 insertions, 1 deletions

diff --git a/test/snapshots/find.snap b/test/snapshots/find.snap
index fbd585f7..fe1ecad3 100644
--- a/test/snapshots/find.snap
+++ b/test/snapshots/find.snap
@@ -64,7 +64,8 @@ key enter
 stable 700 15000
 snap back
 # executing the WORD Find (middle-click in a body) arms the same input — the
-# enum IS the dispatch — and Esc abandons it, restoring the tag tail
+# enum IS the dispatch — and Esc abandons it. The input is its own line, so an
+# abandoned one leaves nothing behind in the tag
 press middle 8 4
 release middle 8 4
 stable 700 10000