Add file menu service boundary

docs/modernization/roadmap.md

@@ -522,8 +522,9 @@ legacy `Canvas::import_equirectangular` or import transform-mode execution
 continues.
 `pano_cli plan-file-menu` exposes app-core planning for the top-level File menu
 commands, including new/open/import, save/save-as/save-version, share, resize,
-cloud upload/browse, JPEG export, and export-submenu routing before legacy
-dialogs, pickers, platform services, cloud code, and canvas workflows continue.
+cloud upload/browse, JPEG export, and export-submenu routing. Direct File menu
+commands now dispatch through `FileMenuServices` before legacy dialogs, pickers,
+platform services, cloud code, and canvas workflows continue.
 `pano_cli plan-export-menu` exposes app-core planning for File menu export
 choices, including image, layer, cube-face, depth, animation-frame, MP4, and
 timelapse dialog routing plus license/canvas gating before legacy export dialogs
@@ -1245,7 +1246,8 @@ Results:
   > Import route planning as JSON automation.
 - `pp_app_core_file_menu_tests` passed, covering top-level File menu routing for
   creation/open/import, save intents, export/submenu/cloud actions, and unknown
-  command rejection.
+  command rejection, plus executor dispatch for dialog, picker, save, export,
+  share, resize, and cloud actions.
 - `pano_cli_plan_file_menu_import_smoke`,
   `pano_cli_plan_file_menu_save_as_smoke`,
   `pano_cli_plan_file_menu_export_smoke`,