feat(assets): embed LCD and audio resources in OTA app

components/platform/CMakeLists.txt

@@ -16,6 +16,7 @@ set(platform_srcs
         "src/platform_io_effects.c"
         "src/lcd_direct.c"
         "src/lcd_direct_assets.c"
+        "src/platform_asset_bundle.c"
         "third_party/lodepng/lodepng.cpp"
         "third_party/lodepng/lodepng_esp_alloc.cpp"
         "third_party/lodepng/lodepng_esp_bridge.cpp"
@@ -54,7 +55,6 @@ set(platform_priv_requires
         esp_wifi
         esp_websocket_client
         json
-        littlefs
         log
         espressif__mdns
         mbedtls
@@ -90,6 +90,8 @@ set(platform_lcd_asset_manifest "${platform_lcd_asset_src_dir}/manifest.json")
 set(platform_lcd_asset_optimizer "${CMAKE_CURRENT_SOURCE_DIR}/../../tools/optimize_lcd_assets.py")
 set(platform_asset_image_dir "${CMAKE_CURRENT_BINARY_DIR}/asset_image")
 set(platform_asset_stage_stamp "${CMAKE_CURRENT_BINARY_DIR}/asset_image.stamp")
+set(platform_asset_pack "${CMAKE_CURRENT_BINARY_DIR}/platform_assets.pack")
+set(platform_asset_packer "${CMAKE_CURRENT_SOURCE_DIR}/../../tools/pack_embedded_assets.py")
 file(GLOB_RECURSE platform_audio_prompt_files CONFIGURE_DEPENDS
     "${platform_audio_prompt_src_dir}/*.opus"
 )
@@ -199,6 +201,7 @@ foreach(lcd_png_asset IN LISTS platform_lcd_png_assets)
     )
 endforeach()
 
+# 先校验并暂存实际引用的 PNG/Opus，再由打包脚本生成应用内只读资源包。
 add_custom_command(
     OUTPUT "${platform_asset_stage_stamp}"
     COMMAND ${PYTHON} "${platform_lcd_asset_optimizer}" check-current
@@ -214,9 +217,14 @@ add_custom_command(
         "${platform_lcd_asset_optimizer}"
 )
 
-littlefs_create_partition_image(
-    gifpack
-    "${platform_asset_image_dir}"
-    FLASH_IN_PROJECT
-    DEPENDS "${platform_asset_stage_stamp}"
+# 素材或打包脚本变化时重新生成包，并通过二进制链接目标纳入 OTA 应用镜像。
+add_custom_command(
+    OUTPUT "${platform_asset_pack}"
+    COMMAND ${PYTHON} "${platform_asset_packer}"
+        "${platform_asset_image_dir}" "${platform_asset_pack}"
+    DEPENDS "${platform_asset_stage_stamp}" "${platform_asset_packer}"
+    VERBATIM
 )
+
+target_add_binary_data(${COMPONENT_LIB} "${platform_asset_pack}" BINARY
+    RENAME_TO platform_assets_pack)