diff --git a/CMakeLists.txt b/CMakeLists.txt
index febf00f..5fee0d8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,7 @@ endif()
 include(PanoPainterWarnings)
 include(PanoPainterSources)
 include(PanoPainterVersion)
+include(PanoPainterRuntime)
 
 if(PP_ENABLE_CLANG_TIDY)
     find_program(PP_CLANG_TIDY_EXE NAMES clang-tidy)
@@ -305,26 +306,7 @@ if(PP_BUILD_APP)
 
         pp_add_version_generation(PanoPainter "$<IF:$<CONFIG:Debug>,debug,release>")
 
-        add_custom_command(TARGET PanoPainter POST_BUILD
-            COMMAND "${CMAKE_COMMAND}" -E copy_directory
-                "${CMAKE_CURRENT_SOURCE_DIR}/data"
-                "$<TARGET_FILE_DIR:PanoPainter>/data"
-            COMMAND "${CMAKE_COMMAND}" -E copy_if_different
-                "${CMAKE_CURRENT_SOURCE_DIR}/libs/bugtrap-client/lib/BugTrapU-x64.dll"
-                "$<TARGET_FILE_DIR:PanoPainter>/BugTrapU-x64.dll"
-            COMMAND "${CMAKE_COMMAND}" -E copy_if_different
-                "$<$<CONFIG:Debug>:${CMAKE_CURRENT_SOURCE_DIR}/libs/curl-win/lib/dll-debug-x64/libcurl_debug.dll>$<$<NOT:$<CONFIG:Debug>>:${CMAKE_CURRENT_SOURCE_DIR}/libs/curl-win/lib/dll-release-x64/libcurl.dll>"
-                "$<TARGET_FILE_DIR:PanoPainter>/"
-            COMMAND "${CMAKE_COMMAND}" -E copy_if_different
-                "${CMAKE_CURRENT_SOURCE_DIR}/libs/libyuv/lib/win/libyuv.dll"
-                "$<TARGET_FILE_DIR:PanoPainter>/libyuv.dll"
-            COMMAND "${CMAKE_COMMAND}" -E copy_if_different
-                "${CMAKE_CURRENT_SOURCE_DIR}/libs/mp4v2/lib/win/libmp4v2.dll"
-                "$<TARGET_FILE_DIR:PanoPainter>/libmp4v2.dll"
-            COMMAND "${CMAKE_COMMAND}" -E copy_if_different
-                "${CMAKE_CURRENT_SOURCE_DIR}/libs/openh264/lib/openh264-2.0.0-win64.dll"
-                "$<TARGET_FILE_DIR:PanoPainter>/openh264-2.0.0-win64.dll"
-            VERBATIM)
+        pp_configure_windows_runtime_payloads(PanoPainter)
     else()
         message(WARNING "PP_BUILD_APP is enabled, but the root CMake app target is currently Windows-only. Platform alignment is tracked in Phase 6.")
     endif()
diff --git a/cmake/PanoPainterRuntime.cmake b/cmake/PanoPainterRuntime.cmake
new file mode 100644
index 0000000..fcdc5e4
--- /dev/null
+++ b/cmake/PanoPainterRuntime.cmake
@@ -0,0 +1,26 @@
+function(pp_configure_windows_runtime_payloads target_name)
+    if(NOT TARGET "${target_name}")
+        message(FATAL_ERROR "pp_configure_windows_runtime_payloads target does not exist: ${target_name}")
+    endif()
+
+    add_custom_command(TARGET "${target_name}" POST_BUILD
+        COMMAND "${CMAKE_COMMAND}" -E copy_directory
+            "${CMAKE_CURRENT_SOURCE_DIR}/data"
+            "$<TARGET_FILE_DIR:${target_name}>/data"
+        COMMAND "${CMAKE_COMMAND}" -E copy_if_different
+            "${CMAKE_CURRENT_SOURCE_DIR}/libs/bugtrap-client/lib/BugTrapU-x64.dll"
+            "$<TARGET_FILE_DIR:${target_name}>/BugTrapU-x64.dll"
+        COMMAND "${CMAKE_COMMAND}" -E copy_if_different
+            "$<$<CONFIG:Debug>:${CMAKE_CURRENT_SOURCE_DIR}/libs/curl-win/lib/dll-debug-x64/libcurl_debug.dll>$<$<NOT:$<CONFIG:Debug>>:${CMAKE_CURRENT_SOURCE_DIR}/libs/curl-win/lib/dll-release-x64/libcurl.dll>"
+            "$<TARGET_FILE_DIR:${target_name}>/"
+        COMMAND "${CMAKE_COMMAND}" -E copy_if_different
+            "${CMAKE_CURRENT_SOURCE_DIR}/libs/libyuv/lib/win/libyuv.dll"
+            "$<TARGET_FILE_DIR:${target_name}>/libyuv.dll"
+        COMMAND "${CMAKE_COMMAND}" -E copy_if_different
+            "${CMAKE_CURRENT_SOURCE_DIR}/libs/mp4v2/lib/win/libmp4v2.dll"
+            "$<TARGET_FILE_DIR:${target_name}>/libmp4v2.dll"
+        COMMAND "${CMAKE_COMMAND}" -E copy_if_different
+            "${CMAKE_CURRENT_SOURCE_DIR}/libs/openh264/lib/openh264-2.0.0-win64.dll"
+            "$<TARGET_FILE_DIR:${target_name}>/openh264-2.0.0-win64.dll"
+        VERBATIM)
+endfunction()
diff --git a/docs/modernization/build-inventory.md b/docs/modernization/build-inventory.md
index 4d2e408..0812546 100644
--- a/docs/modernization/build-inventory.md
+++ b/docs/modernization/build-inventory.md
@@ -10,7 +10,7 @@ Keep it updated as platform paths move to shared CMake targets.
 
 | Platform/Target | Current Entrypoint | Notes |
 | --- | --- | --- |
-| Windows desktop | Root `CMakeLists.txt`, preset `windows-msvc-default`; target preset `windows-vs2026-x64` retained for VS 2026 | Raw `.sln/.vcxproj` files removed on 2026-05-31; local machine currently uses Visual Studio 17 2022; `PanoPainter` now links through `pp_platform_windows` and `panopainter_app`, with Windows/vendor link dependencies owned by the platform shell |
+| Windows desktop | Root `CMakeLists.txt`, preset `windows-msvc-default`; target preset `windows-vs2026-x64` retained for VS 2026 | Raw `.sln/.vcxproj` files removed on 2026-05-31; local machine currently uses Visual Studio 17 2022; `PanoPainter` now links through `pp_platform_windows` and `panopainter_app`, with Windows/vendor link dependencies owned by the platform shell and runtime payload deployment in `cmake/PanoPainterRuntime.cmake` |
 | Windows AppX | `PanoPainterPackage/Package.appxmanifest`, `.wapproj` referenced by solution | Distribution packaging |
 | macOS | `PanoPainter-OSX/` project files and `Info.plist` | Uses `NSOpenGLView` today |
 | iOS | `PanoPainter/Info.plist`, related Apple sources | Uses OpenGL ES today |
diff --git a/docs/modernization/roadmap.md b/docs/modernization/roadmap.md
index fac7bbb..2723270 100644
--- a/docs/modernization/roadmap.md
+++ b/docs/modernization/roadmap.md
@@ -145,8 +145,9 @@ option targets exist. The Windows desktop app builds through CMake as
 2026-05-31 by user decision. The root CMake Windows app graph now includes a
 `panopainter_app` composition target and `pp_platform_windows` shell target so
 `PanoPainter` is only the executable/resource wrapper; Windows and vendor link
-dependencies now belong to the platform shell target. Android arm64 now
-configures and builds headless foundation/tool targets through the root
+dependencies now belong to the platform shell target, and Windows runtime
+payload deployment lives behind `cmake/PanoPainterRuntime.cmake`. Android arm64
+now configures and builds headless foundation/tool targets through the root
 CMake/NDK path. Non-Windows platform app/package files remain during Phase 6
 alignment.