- Fix value editor not scrollable when content exceeds container
(overflow-hidden -> overflow-auto)
- Extract vscodeSelectionLayer from QueryEditor into shared module
and apply to value editor for consistent selection highlighting
Move search/replace panel from QueryEditor into EditorSearchPanel.vue,
and use it in both QueryEditor and cell detail editor via programmatic
mounting. Removes dependency on CodeMirror's built-in search panel in
the cell detail editor, giving it the same custom search UI.
