Centralize retained dialog destroy callbacks

docs/modernization/roadmap.md

@@ -504,6 +504,8 @@ Document open/save/new/browse/resize, layer-rename, cloud-browse, and PPBR
 export dialog cancel buttons now use those same retained close helpers.
 App-level new-document, save, and layer-rename cancel callbacks now share the
 retained dialog close plus virtual-keyboard hide helper.
+Browse accept, resize accept/failure, and what's-new read-later/close callbacks
+now use a named retained dialog close helper instead of direct `destroy()` calls.
 Raw popup callback captures and full close/capture ownership remain part of
 `DEBT-0063`.
 `pano_cli inspect-image` exposes PNG IHDR metadata as JSON,