Route VR lifecycle through platform services

docs/modernization/build-inventory.md

@@ -197,8 +197,10 @@ Known local toolchain state:
   options-menu preference execution. It keeps UI scale, viewport scale, RTL,
   VR mode, VR-controller, auto-timelapse, and canvas cursor-mode callbacks on
   the `pp_app_core` `AppPreferenceServices` contract while retained settings
-  persistence, VR start/stop, recording lifecycle, and legacy canvas/UI
-  execution remain tracked by `DEBT-0045`.
+  persistence, recording lifecycle, and legacy canvas/UI execution remain
+  tracked by `DEBT-0045`; the VR mode callbacks now call `App` wrappers that
+  dispatch through `PlatformServices` before reaching the retained platform VR
+  bridge.
 - `src/legacy_app_startup_services.*` is the current app-shell bridge for
   startup preference/runtime execution. It keeps run-counter persistence,
   startup preference save, auto-timelapse startup, stored VR-controller state,
@@ -387,7 +389,8 @@ Known local toolchain state:
   context.
   Desktop VR drawing also consumes backend-owned scissor/depth/blend state,
   depth clear masks, active texture units, and fallback 2D texture unbind
-  targets while retaining the existing VR SDK/platform bridge shape.
+  targets; VR SDK start/stop now dispatches through `PlatformServices` while
+  retaining the existing Windows OpenVR bridge shape.
   Canvas mode overlay, mask, and transform paths also consume backend-owned
   blend/depth state, active texture units, 2D texture copy targets, and RGBA8
   readback format tokens.
@@ -559,7 +562,8 @@ Known local toolchain state:
   display-path formatting, canvas input tip visibility and pressure remapping,
   native UI/window state saving, live asset/layout reload policy, diagnostic
   stacktrace/crash hooks,
-  SonarPen availability/startup, PPBR export data-directory policy,
+  SonarPen availability/startup, VR mode lifecycle,
+  PPBR export data-directory policy,
   prepared-file writable target selection, network TLS verification policy, and
   prepared-file save/download handoff; PPBR
   and MP4 export dialogs consume
@@ -656,8 +660,8 @@ Known local toolchain state:
   split persistence/runtime dispatch, and malformed startup-plan rejection.
 - `pp_platform_api_tests` covers service dispatch for clipboard read/write,
   empty clipboard writes, cursor visibility, virtual-keyboard visibility,
-  external file display, file sharing, and picker callbacks without platform
-  SDK headers or a window.
+  external file display, file sharing, VR lifecycle, and picker callbacks
+  without platform SDK headers or a window.
 - `pp_app_core_document_cloud_tests` covers cloud upload no-canvas,
   new-document warning, clean publish prompt, and dirty save-before-upload
   decisions, plus cloud browse no-canvas/show-browser and selected-download