Plan document export success messages

docs/modernization/build-inventory.md

@@ -649,6 +649,10 @@ Known local toolchain state:
   for image file exports, layer/frame collection directories, picked-directory
   stems, and MP4 suggested names as JSON and is covered for file, collection,
   and suggested-name states.
+- `pano_cli plan-export-message` exposes `pp_app_core` export completion
+  dialog metadata for equirectangular image, layer/frame collection,
+  depth/cube, animation MP4, and timelapse success paths as JSON, including
+  platform-style destinations and suppressed/no-message paths.
 - `pano_cli plan-export-start` exposes `pp_app_core` export availability
   planning for license-gated, demo-blocked, and missing-canvas states as JSON;
   the live image, layer, animation-frame, depth, and cube-face export dialogs

docs/modernization/roadmap.md

@@ -519,6 +519,10 @@ stems, and MP4 suggested names used by the live export dialogs.
 used by live image, layer, animation-frame, depth, and cube-face export dialogs
 plus MP4 animation and timelapse export dialogs before they call legacy
 canvas/recording export execution.
+`pano_cli plan-export-message` exposes the app-core export completion dialog
+metadata now consumed by the live legacy export bridge for equirectangular,
+layer/frame, depth/cube, animation MP4, and timelapse success reporting,
+including platform-style destinations and no-message/suppressed branches.
 `pano_cli plan-recording-session` exposes the app-core recording start, stop,
 clear, platform recorded-file cleanup, frame reset, and export progress-total
 decisions used by the live recording controls. Recording lifecycle and MP4
@@ -655,6 +659,9 @@ choices, including image, layer, cube-face, depth, animation-frame, MP4, and
 timelapse dialog routing plus license/canvas gating. Export menu commands now
 dispatch through `DocumentExportMenuServices` in the shared app-shell bridge
 before legacy export dialogs and renderer/video execution continue.
+Export success-message metadata now also comes from `pp_app_core` through
+`pano_cli plan-export-message` and the legacy document-export bridge, reducing
+the bridge to export execution, platform handoff, and retained threading.
 `pano_cli plan-grid-operation` exposes app-core planning for grid heightmap
 pick/load/reload/clear, lightmap render capability/limit checks, and heightmap
 commit used by the live grid panel. Grid execution now dispatches through