Extract platform policy catalog

docs/modernization/build-inventory.md

@@ -739,6 +739,14 @@ powershell -ExecutionPolicy Bypass -File scripts\automation\apple-remote-build.p
   and cloud browse-dialog curl sites now consume the same default platform TLS
   policy helper in `pp_platform_api` instead of spelling Android branches
   locally;
+  retained platform-family decisions for exported-image publishing,
+  persistent-storage flushing, document browse roots, working-directory picker
+  availability, prepared-file target planning, work-directory collection export
+  policy, PPBR data-directory override policy, SonarPen availability, live
+  asset reload policy, recording cleanup policy, default canvas resolution, and
+  canvas tip visibility now live in the tested `platform_policy` catalog and
+  are consumed by both `WindowsPlatformServices` and the retained non-Windows
+  fallback;
   Windows
   live app execution now uses injected
   `WindowsPlatformServices` from
@@ -908,7 +916,8 @@ powershell -ExecutionPolicy Bypass -File scripts\automation\apple-remote-build.p
 - `pp_platform_api_tests` covers service dispatch for clipboard read/write,
   empty clipboard writes, cursor visibility, virtual-keyboard visibility,
   external file display, file sharing, VR lifecycle, layout/asset file load
-  policy, and picker callbacks without platform SDK headers or a window.
+  policy, platform-family export/storage/browse/prepared-file/canvas policies,
+  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
@@ -1025,8 +1034,9 @@ Known warnings after the current CMake app build:
   should shrink as app painting and document behavior consume `pp_paint` and
   `pp_document` directly. Shared `canvas.h` no longer owns the platform
   `CANVAS_RES` macro; default canvas allocation now asks `PlatformServices`,
-  preserving the WebGL 512 default in the legacy fallback while DEBT-0057
-  tracks moving that policy into an injected Web platform service.
+  preserving the WebGL 512 default through the tested `pp_platform_api`
+  platform policy while DEBT-0057 tracks moving that policy into an injected
+  Web platform service.
 - `pp_legacy_engine` intentionally contains retained legacy runtime shell
   sources for now, so it concentrates existing legacy tablet, video, HMD, log,
   and low-level utility warnings until those paths move to cleaner component