Extract downloaded project reconcile helper

docs/modernization/debt.md

@@ -18,6 +18,13 @@ agent or engineer to remove them without reconstructing context from chat.
 
 ## Recent Reductions
 
+- 2026-06-15: `DEBT-0038` was narrowed again. The retained cloud downloaded-
+  project open, layer refresh, and action-history reset in
+  `execute_legacy_downloaded_project_open()` now route through a focused
+  helper in `src/legacy_document_open_services.cpp` instead of living inline
+  in the document-open bridge; the remaining cloud bridge debt stays
+  concentrated in retained prompt/progress lifetime, OpenGL context guarding,
+  and the still-retained transfer-thread execution model.
 - 2026-06-15: `DEBT-0038` was narrowed again. The retained cloud publish
   prompt setup in `show_cloud_publish_prompt()` now routes through a focused
   helper in `src/legacy_cloud_services.cpp` instead of living inline in the

docs/modernization/roadmap.md

@@ -104,6 +104,11 @@ Retained save-before-upload execution now also routes through
 directly, so the remaining cloud debt is further concentrated on
 prompt/progress lifetime, OpenGL context guarding, downloaded-project open,
 layer refresh, and action-history reset.
+Retained cloud downloaded-project open, layer refresh, and action-history
+reset in `execute_legacy_downloaded_project_open()` now also route through a
+focused helper in `src/legacy_document_open_services.*`, so the remaining
+cloud bridge debt is further concentrated on prompt/progress lifetime, OpenGL
+context guarding, and the still-retained transfer-thread execution model.
 Retained cloud downloaded-project post-open reconciliation now also routes
 through `src/legacy_document_open_services.*` instead of living inline in
 `src/legacy_cloud_services.cpp`, so the remaining cloud bridge debt is further