Expose platform checks as CMake targets

docs/modernization/roadmap.md

@@ -1383,7 +1383,13 @@ keeps the PowerShell and shell wrapper defaults aligned with every current
 CMake test executable plus required component targets, and now verifies the
 default Android preset set covers standard arm64/x64, Quest arm64, and
 Focus/Wave arm64. The shell wrapper now mirrors the PowerShell wrapper's
-multi-preset behavior and reports one structured result array.
+multi-preset behavior and reports one structured result array. Root CMake now
+also exposes non-default platform validation targets:
+`panopainter_platform_build_headless`,
+`panopainter_platform_build_android_assets`, and
+`panopainter_platform_build_apple_remote`; the platform-build self-test guards
+those target names and the wrapper matrix now includes
+`pp_app_core_app_dialog_tests` with the rest of the CMake test executables.
 `package-smoke` now emits a structured package readiness matrix for Windows
 AppX, Android standard/Quest/Focus APKs, Apple bundles, and WebGL output, with
 blocked prerequisites tied to DEBT-0011. It also has a readiness-only mode for
@@ -2393,6 +2399,13 @@ Results:
   `cmake --build --preset windows-msvc-default --config Debug --target
   panopainter_android_native_package_smoke` validates the latest SDK-managed
   NDK/CMake pair and reports the still-blocked APK package state.
+- Root CMake now exposes platform validation targets for the default headless
+  platform-build sweep, the Android standard/Quest/Focus root CMake asset
+  component sweep, and the remote Apple compile gate. `cmake --build --preset
+  windows-msvc-default --config Debug --target
+  panopainter_platform_build_android_assets` validated `pp_assets` across
+  Android arm64, Android x64, Quest arm64, and Focus/Wave arm64 with the latest
+  SDK-managed NDK/CMake pair.
 - Desktop VR drawing now routes generic OpenGL scissor/depth/blend state,
   blend/depth state snapshots and restores, depth clears, active texture units,
   and fallback 2D texture unbinds through tested renderer GL backend dispatch;