Refactor and clean up codebase

- Removed unused constants and type aliases in app_spi_command_defs.h and temp_sensor.h.
- Simplified ISpiCommandHandler destructor to default.
- Eliminated redundant methods and comments in temp_sensor and usart0 files.
- Consolidated writeU32Le function to app_spi_command_defs.h for reuse.
- Updated comments for clarity and accuracy in task_manager.h and task_runner.cpp.
- Removed hardfault.h as it contained no declarations.
- Cleaned up CANFD and watchdog implementations by removing dead code and unnecessary comments.
- Updated version numbers in config.h to reflect recent changes.
- Enhanced error handling and diagnostics in hardfault handling.

GD32E508_DCU_APP/sys/config.h

@@ -1,4 +1,4 @@
-/**
+/**
  * @file config.h
  * @brief 应用级集中配置项定义。
  * @note 用于统一管理当前项目中可调的外设、时序、通信与算法常量。
@@ -16,9 +16,9 @@ constexpr const char *APP_BANNER_TEXT = "GD32E508 DCU task scheduler start";
  * APP 固件版本号
  * ============================================================ */
 constexpr uint32_t APP_FW_VERSION_MAJOR = 1U;
-constexpr uint32_t APP_FW_VERSION_MINOR = 2U;
-constexpr uint32_t APP_FW_VERSION_PATCH = 3U;
-constexpr uint32_t APP_FW_VERSION_BUILD = 2U;
+constexpr uint32_t APP_FW_VERSION_MINOR = 3U;
+constexpr uint32_t APP_FW_VERSION_PATCH = 0U;
+constexpr uint32_t APP_FW_VERSION_BUILD = 0U;
 
 
 /** @brief USART0 默认波特率。 */