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/device/usart0.cpp

@@ -11,7 +11,6 @@
 uint8_t           Usart0::s_txBuf[Usart0::kTxBufSize];
 volatile uint16_t Usart0::s_txHead = 0U;
 volatile uint16_t Usart0::s_txTail = 0U;
-volatile uint32_t Usart0::s_dropCount = 0U;
 
 /**
  * @brief 计算发送环形缓冲区中的下一个索引。
@@ -24,17 +23,6 @@ uint16_t Usart0::nextIndex(uint16_t idx)
     return (idx + 1U) % kTxBufSize;
 }
 
-/**
- * @brief 判断 USART0 发送缓冲区是否已满。
- * @param[in]  无。
- * @param[out] 无。
- * @retval bool true 表示发送缓冲区已满，false 表示仍有可写空间。
- */
-bool Usart0::isBufferFull()
-{
-    return nextIndex(s_txHead) == s_txTail;
-}
-
 /**
  * @brief 判断 USART0 发送缓冲区是否为空。
  * @param[in]  无。
@@ -59,7 +47,6 @@ bool Usart0::putCharNonBlocking(int ch)
     const uint16_t next = nextIndex(s_txHead);
     if(next == s_txTail) {
         RT_CRITICAL_RESTORE(save);
-        s_dropCount++;
         return false;
     }