빌드 시 FW Version 포함 release hex 자동 복사 추가

- 일반 빌드 시 build/merged.hex를 release/VesiScan-Basic_<FIRMWARE_VERSION>.hex 형식으로 자동 복사하도록 추가
- 생산용 HEX 파일을 펌웨어 버전별로 관리할 수 있게 함

sysbuild.cmake

@@ -75,3 +75,32 @@ if(EXISTS "${APP_PRJ_CONF}")
     )
   endif()
 endif()
+
+# Production HEX file name based on src/main.h FIRMWARE_VERSION.
+set(APP_MAIN_H "${APP_DIR}/src/main.h")
+if(EXISTS "${APP_MAIN_H}")
+  set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${APP_MAIN_H}")
+  file(READ "${APP_MAIN_H}" APP_MAIN_H_TEXT)
+
+  if(APP_MAIN_H_TEXT MATCHES "#define[ \t]+FIRMWARE_VERSION[ \t]+\"([^\"]+)\"")
+    set(FW_HEX_VERSION "${CMAKE_MATCH_1}")
+    string(REGEX REPLACE "[^A-Za-z0-9_.+-]" "_" FW_HEX_VERSION "${FW_HEX_VERSION}")
+
+    set(FW_HEX_SOURCE "${CMAKE_BINARY_DIR}/merged.hex")
+    set(FW_HEX_RELEASE_DIR "${APP_DIR}/release")
+    set(FW_HEX_VERSIONED "${FW_HEX_RELEASE_DIR}/VesiScan-Basic_${FW_HEX_VERSION}.hex")
+
+    add_custom_command(
+      OUTPUT "${FW_HEX_VERSIONED}"
+      COMMAND ${CMAKE_COMMAND} -E make_directory "${FW_HEX_RELEASE_DIR}"
+      COMMAND ${CMAKE_COMMAND} -E copy_if_different "${FW_HEX_SOURCE}" "${FW_HEX_VERSIONED}"
+      DEPENDS "${FW_HEX_SOURCE}"
+      COMMENT "Generating firmware-versioned HEX ${FW_HEX_VERSIONED}"
+      VERBATIM
+    )
+
+    add_custom_target(firmware_versioned_hex ALL
+      DEPENDS "${FW_HEX_VERSIONED}"
+    )
+  endif()
+endif()