refactor: 完成R8裸机lwIP移植并更新文档

App/config.h

@@ -144,13 +144,6 @@ device_config_t *config_get_mutable(void);
  */
 at_result_t config_process_at_cmd(const char *cmd, char *response, uint16_t max_len);
 
-/**
- * @brief Configuration task (for FreeRTOS)
- * Handles UART1 reception and AT command processing
- * @param argument Task argument (unused)
- */
-void config_task(void *argument);
-
 /**
  * @brief UART1 IDLE interrupt handler for config module
  */
@@ -161,6 +154,21 @@ void config_uart_idle_handler(void);
  */
 void config_start_reception(void);
 
+/**
+ * @brief Poll configuration UART and process pending AT commands
+ */
+void config_poll(void);
+
+/**
+ * @brief Check whether AT+RESET requested a system reset
+ */
+bool config_is_reset_requested(void);
+
+/**
+ * @brief Clear the pending reset request flag
+ */
+void config_clear_reset_requested(void);
+
 /**
  * @brief Format IP address to string
  * @param ip IP address bytes