Centralize retained document session dialog closing

docs/modernization/debt.md

@@ -534,6 +534,10 @@ agent or engineer to remove them without reconstructing context from chat.
 - 2026-06-12: DEBT-0063/DEBT-0058 were narrowed again. Open/Browse
   delete-confirmation message boxes and shared destroy-on-click bindings now
   use the retained dialog close helper in `src/legacy_ui_overlay_services.*`.
+- 2026-06-12: DEBT-0063/DEBT-0040/DEBT-0041/DEBT-0042 were narrowed again.
+  Document-session overwrite prompts, unsaved-close prompts, save-before-workflow
+  prompts, and accepted new/save document cleanup now route retained dialog
+  closing through `src/legacy_ui_overlay_services.*`.
 - 2026-06-05: DEBT-0011 was narrowed. The Windows app package smoke target now
   passes the configure-time CMake executable into `package-smoke.ps1`, so VS
   2026 generator validation does not depend on an older `cmake` on PATH, and

docs/modernization/roadmap.md

@@ -508,6 +508,9 @@ 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.
 Open/Browse delete-confirmation message boxes and shared destroy-on-click
 bindings now use that same retained dialog close helper.
+Document-session overwrite, unsaved-close, save-before-workflow, and accepted
+new/save document cleanup now route retained dialog closing through the same
+helpers.
 Raw popup callback captures and full close/capture ownership remain part of
 `DEBT-0063`.
 `pano_cli inspect-image` exposes PNG IHDR metadata as JSON,