refactor: 确定路径A架构(NO_SYS=0+netconn+多TCP任务)，精确化任务设计与内存预算

- FreeRTOSConfig.h: 堆8->10KB, 优先级56->7, 添加lwIP sys_arch宏和任务优先级/栈大小定义
- lwipopts.h: LWIP_SOCKET=0节省RAM, LWIP_TCPIP_CORE_LOCKING=1, MEM_SIZE 8KB,
  PBUF_POOL 10, MEMP_NUM_NETCONN 8, TCP_SND_BUF/WND 8xMSS, 关闭DHCP/UDP,
  TCPIP_THREAD_STACKSIZE/PRIO明确指定
- 项目技术实现: 9+1任务架构, netconn阻塞模式每连接独立任务, 零拷贝route_msg_t,
  内存精确估算49KB(RCT6超1KB需优化或换RDT6), 模块重写/复用清单
- 项目需求说明: 明确netconn API路线, 添加RDT6备选, 更新任务列表9个任务

Core/Inc/FreeRTOSConfig.h

@@ -59,13 +59,13 @@
 #define configUSE_PREEMPTION                     1
 #define configSUPPORT_STATIC_ALLOCATION          1
 #define configSUPPORT_DYNAMIC_ALLOCATION         1
-#define configUSE_IDLE_HOOK                      0
+#define configUSE_IDLE_HOOK                      1
 #define configUSE_TICK_HOOK                      0
 #define configCPU_CLOCK_HZ                       ( SystemCoreClock )
 #define configTICK_RATE_HZ                       ((TickType_t)1000)
-#define configMAX_PRIORITIES                     ( 56 )
+#define configMAX_PRIORITIES                     ( 7 )
 #define configMINIMAL_STACK_SIZE                 ((uint16_t)128)
-#define configTOTAL_HEAP_SIZE                    ((size_t)8192)   /* Fit R8 RAM budget with dynamic tasks */
+#define configTOTAL_HEAP_SIZE                    ((size_t)10240)
 #define configMAX_TASK_NAME_LEN                  ( 16 )
 #define configUSE_TRACE_FACILITY                 1
 #define configUSE_16_BIT_TICKS                   0
@@ -151,6 +151,41 @@ standard names. */
 
 /* USER CODE BEGIN Defines */
 /* Section where parameter definitions can be added (for instance, to override default ones in FreeRTOS.h) */
+
+/* lwIP sys_arch compatibility macros */
+#define sys_arch_protect()                    vPortEnterCritical()
+#define sys_arch_unprotect(x)                 vPortExitCritical()
+#define sys_now()                             ((uint32_t)xTaskGetTickCount())
+#define SYS_ARCH_DECL_PROTECT(lev)            uint32_t lev
+#define SYS_ARCH_PROTECT(lev)                 (lev) = vPortEnterCritical()
+#define SYS_ARCH_UNPROTECT(lev)               vPortExitCritical()
+
+/* Application task priorities (higher number = higher priority) */
+#define TASK_PRIORITY_TCPIP                   6
+#define TASK_PRIORITY_NET_POLL                5
+#define TASK_PRIORITY_TCP_SERVER              4
+#define TASK_PRIORITY_TCP_CLIENT              4
+#define TASK_PRIORITY_UART_RX                 4
+#define TASK_PRIORITY_ROUTE                   3
+#define TASK_PRIORITY_CONFIG                  2
+#define TASK_PRIORITY_DEFAULT                 1
+
+/* Application task stack sizes (in words) */
+#define TASK_STACK_TCPIP                      512
+#define TASK_STACK_NET_POLL                   384
+#define TASK_STACK_TCP_SERVER                 384
+#define TASK_STACK_TCP_CLIENT                 256
+#define TASK_STACK_UART_RX                    384
+#define TASK_STACK_ROUTE                      512
+#define TASK_STACK_CONFIG                     256
+#define TASK_STACK_DEFAULT                    128
+
+/* Route message pool for zero-copy inter-task communication */
+#define ROUTE_MSG_POOL_SIZE                    8
+#define ROUTE_MSG_MAX_PAYLOAD                  512
+
+/* lwIP thread name for tcpip_thread */
+#define TCPIP_THREAD_NAME                     "tcpip"
 /* USER CODE END Defines */
 
 #endif /* FREERTOS_CONFIG_H */