Base UI's Menu uses focus-follows-cursor — hovering a sibling row drags
DOM focus to that row, which made the rename input's onBlur=save fire
just from moving the mouse. The result: clicking the pencil and then
nudging the cursor would silently commit a half-typed title.
Replace the blur handler with a document-level pointerdown listener
(capture phase, so it runs before Base UI's outside-click close handler
unmounts the input). The listener only commits when the user actually
clicks somewhere outside the input. Enter still commits, Escape still
cancels, mouse hover is now a no-op.
MUL-2110
Co-authored-by: multica-agent <github@multica.ai>
e2802a5407