Extract app dialog and binding service seams

docs/modernization/debt.md

@@ -791,6 +791,27 @@ agent or engineer to remove them without reconstructing context from chat.
   no longer self-destroy their cancel/OK buttons through
   `bind_legacy_click_destroys_node(...)`; menu/layout-owned popup families still
   remain on separate retained cleanup paths.
+- 2026-06-17: `DEBT-0058`/`DEBT-0063` were narrowed again. The retained
+  usermanual, changelog, and about openers in `src/app_dialogs_info_openers.cpp`
+  now delegate retained dialog construction and overlay close wiring through
+  `src/legacy_info_dialog_services.*` with explicit `App&` plus overlay-anchor
+  dependencies, so the app dialog shell no longer owns that info-dialog family
+  inline while `open_whatsnew_dialog()` still owns the retained whats-new flow
+  inline.
+- 2026-06-17: `DEBT-0058`/`DEBT-0063` were narrowed again. The retained New
+  Document and Save dialog openers in `src/app_dialogs_workflow.cpp` now
+  delegate retained dialog construction and button wiring through
+  `src/legacy_document_session_services.*` with explicit `App&` ownership, so
+  the app dialog shell no longer owns that document-session dialog family
+  inline while browse, open, and resize flows still remain there.
+- 2026-06-17: `DEBT-0035` was narrowed again. `App::title_update()` and the
+  draw-toolbar/stroke-popup binding families now delegate through
+  `src/legacy_app_status_services.*`,
+  `src/legacy_draw_toolbar_binding_services.*`, and
+  `src/legacy_sidebar_stroke_popup_services.*`, so
+  `src/app_layout.cpp`, `src/app_layout_draw_toolbar.cpp`, and part of
+  `src/app_layout_sidebar.cpp` are thinner adapters while retained app-shell
+  execution and remaining popup families still stay open under the same debt.
 - 2026-06-15: `DEBT-0036` was narrowed again. `NodeStrokePreview` now drops the
   retained pass-sequence, mix-execution, final-composite-request, background
   capture, and preview-copy wrapper structs/functions in favor of direct