Centralize legacy new document bridge

docs/modernization/build-inventory.md

@@ -586,9 +586,9 @@ Known local toolchain state:
   document-open action planning and executor dispatch/rejection, save-request,
   close-request executor dispatch/no-op preservation, document-save executor
   dispatch/no-op preservation, save-before-workflow executor dispatch,
-  new-document target/resolution/overwrite planning, document file target,
-  combined save-file overwrite planning, and save-version target decisions
-  without requiring a window, canvas, or message box.
+  new-document target/resolution/overwrite planning and executor dispatch,
+  document file target, combined save-file overwrite planning, and save-version
+  target decisions without requiring a window, canvas, or message box.
 - `src/legacy_document_open_services.*` is the current app-shell bridge between
   `pp_app_core` document-open plans and live ABR/PPBR import prompts,
   unsaved-project discard prompts, project opening, layer UI refresh, title
@@ -597,8 +597,10 @@ Known local toolchain state:
 - `src/legacy_document_session_services.*` is the current app-shell bridge
   between `pp_app_core` document-session decisions and live close prompts,
   save dialogs, save-version routing, existing-project saves, and
-  save-before-workflow prompts; retained legacy UI/canvas execution remains
-  tracked by `DEBT-0040`.
+  save-before-workflow prompts. It also bridges accepted new-document plans to
+  legacy canvas resize/layer setup, overwrite prompts, title updates, and
+  keyboard/dialog cleanup. Retained legacy UI/canvas execution remains tracked
+  by `DEBT-0040` and `DEBT-0041`.
 - `src/legacy_history_services.*` is the current app-shell bridge between
   `pp_app_core` history plans and legacy `ActionManager`; toolbar and
   `NodeCanvas` hotkeys share it while document-history extraction remains