Prepare renderer snapshots before legacy exports

docs/modernization/build-inventory.md

@@ -275,6 +275,11 @@ powershell -ExecutionPolicy Bypass -File scripts\automation\apple-remote-build.p
   in `rendererUpload` JSON. It is covered by
   `pano_cli_plan_canvas_document_snapshot_smoke` plus the payload-bearing
   snapshot smoke.
+- Live equirectangular, layer, animation-frame, and cube-face export adapters
+  now prepare and log the same payload-bearing canvas document snapshot plus
+  renderer-neutral active-frame upload report before delegating to retained
+  `Canvas` export execution. Depth and video export remain on the older retained
+  path.
 - `pano_cli save-document-project` writes that pure document export to a PPI
   file and is covered by `pano_cli_save_document_project_roundtrip_smoke`,
   which inspects and loads the generated file.
@@ -1110,7 +1115,10 @@ powershell -ExecutionPolicy Bypass -File scripts\automation\apple-remote-build.p
   layers, animation-frame, depth, and cube-face export calls. It preserves
   platform-specific export messages, directory creation, picker-selected stem
   exports, Web prepared-file handoff, and legacy `Canvas` export execution while
-  retained renderer/document/platform ownership is tracked by `DEBT-0043`. It
+  retained renderer/document/platform ownership is tracked by `DEBT-0043`.
+  Equirectangular, layer, animation-frame, and cube-face execution now prepare
+  the document snapshot plus renderer-upload readiness report before those
+  retained calls; depth export remains on the older retained path. It
   also bridges timelapse and animation MP4 export picker-selected paths while
   preserving desktop worker-thread timelapse behavior, mobile/Web save
   callbacks, `App::rec_export`, animation `Canvas::export_anim_mp4`, and