feat(com_router): bind_app 协议绑定路由 — 端口→规约直投

## 设计
通道配置新增 bind_app 字段:
- bind_app="" (空)  → 现有帧内容分路 (FTU串口)
- bind_app="iec"    → 整帧直投 libiec (TCP :2404 主站)
- bind_app="self_ptl" → 整帧直投 self_ptl (备用)

新增 com_router_register_dispatch(bind_app, cb):
- 协议模块在 app_wiring() 注册回调
- recv_cb 发现通道 bind_app 匹配, 直接调用 dispatch
- 不需要帧解析 — 协议模块自行解码

## 路由优先级
1. forward_rule → 维护透传
2. bind_app 非空 → dispatch 投递
3. bind_app 空 → 帧内容分路 (ICP67 dev=0/IEC/ICP67 dev≠0)

## 配置示例
channel_cfg.json: tcp_master(:2404) bind_app="iec"
  → 外部主站连接 :2404 → com_router → libiec 回调

config/CHANNEL/channel_cfg.json

@@ -15,7 +15,8 @@
             "type":       "tcp_server",
             "local_ip":   "0.0.0.0",
             "local_port": 2404,
-            "desc":       "主站通道 (libiec直管, 不走com_router路由)"
+            "bind_app":   "iec",
+            "desc":       "IEC-104主站通道 (:2404) — com_router直接投递给libiec"
         }
     ],
     "forward_rules": [

src/system/libcom_router/inc/com_router.h

@@ -21,6 +21,18 @@
 extern "C" {
 #endif
 
+/* =========================== 协议分发回调 =========================== */
+
+#define MAX_DISPATCH_APPS 8
+
+/**
+ * @brief 协议模块数据接收回调 — 通道绑定 bind_app 后, 整帧投递
+ * @param interface  通道标识 (ch_id<<16)|fd
+ * @param data       原始数据 (整帧, 不解包)
+ * @param len        数据长度
+ */
+typedef void (*com_router_dispatch_cb)(uint32_t interface, const unsigned char *data, int len);
+
 /* =========================== 通道配置结构 =========================== */
 
 /**
@@ -76,6 +88,18 @@ uint32_t  com_router_interface_get(const char *key);
 int       com_router_fd_get(const char *key);
 int       com_router_id_get_by_bind(const char *bind_app);
 
+/**
+ * @brief 协议模块注册分发回调 — 通道 bind_app 匹配时直接投递
+ * @param bind_app 协议标识 (如 "iec", "self_ptl", "iec61850")
+ * @param cb       数据接收回调, 通道收到数据时调用
+ * @return 0 成功, -1 失败 (表满)
+ *
+ * @note 调用时机: app_wiring() 中, 在 app_com_router_init1 之后
+ *       若通道配置中 bind_app 非空, 该通道的原始数据直接投递给注册的回调
+ *       不再经过帧内容分路逻辑 (帧解析由协议模块自行完成)
+ */
+int com_router_register_dispatch(const char *bind_app, com_router_dispatch_cb cb);
+
 /* =========================== 应用线程入口 =========================== */
 
 int   app_com_router_init1(void *arg);

src/system/libcom_router/src/com_router.cpp

@@ -29,6 +29,53 @@ int                 g_forward_count = 0;
 
 static int          g_config_loaded = 0;
 
+/* =========================== 协议分发注册表 =========================== */
+
+typedef struct
+{
+	char                     bind_app[16];
+	com_router_dispatch_cb   cb;
+} dispatch_entry_t;
+
+static dispatch_entry_t g_dispatch_table[MAX_DISPATCH_APPS];
+static int              g_dispatch_count = 0;
+
+int com_router_register_dispatch(const char *bind_app, com_router_dispatch_cb cb)
+{
+	if(NULL == bind_app || NULL == cb || g_dispatch_count >= MAX_DISPATCH_APPS)
+	{
+		return -1;
+	}
+
+	strncpy(g_dispatch_table[g_dispatch_count].bind_app, bind_app, 15);
+	g_dispatch_table[g_dispatch_count].cb = cb;
+	g_dispatch_count++;
+
+	LOG_I("com_router: registered dispatch for [%s]", bind_app);
+	return 0;
+}
+
+/* 内部查找: 按 bind_app 取回调, 未找到返回 NULL */
+com_router_dispatch_cb com_router_dispatch_find(const char *bind_app)
+{
+	int i;
+
+	if(NULL == bind_app || '\0' == bind_app[0])
+	{
+		return NULL;
+	}
+
+	for(i = 0; i < g_dispatch_count; i++)
+	{
+		if(0 == strcmp(g_dispatch_table[i].bind_app, bind_app))
+		{
+			return g_dispatch_table[i].cb;
+		}
+	}
+
+	return NULL;
+}
+
 /* =========================== 前向声明 =========================== */
 
 extern void com_router_recv_cb(int id, int fd, const unsigned char *data, int len);
@@ -59,11 +106,14 @@ static int com_router_parse_channels(cJSON *arr)
 
 		cJSON *key  = cJSON_GetObjectItem(item, "key");
 		cJSON *type = cJSON_GetObjectItem(item, "type");
+		cJSON *bind = cJSON_GetObjectItem(item, "bind_app");
 		cJSON *desc = cJSON_GetObjectItem(item, "desc");
 
 		if(NULL == key || NULL == type) continue;
 
 		strncpy(ch->key, key->valuestring, 31);
+		if(NULL != bind) { strncpy(ch->bind_app, bind->valuestring, 15); }
+		else             { ch->bind_app[0] = '\0'; }
 
 		if(0 == strcmp(type->valuestring, "uart"))
 		{

src/system/libcom_router/src/com_router_dispatch.cpp

@@ -11,6 +11,11 @@
 
 #include <string.h>
 
+/* =========================== 前向声明 =========================== */
+
+/* 来自 com_router.cpp 的内部函数 */
+extern com_router_dispatch_cb com_router_dispatch_find(const char *bind_app);
+
 /* =========================== 全局变量引用 =========================== */
 
 extern com_channel_t        g_channels[];
@@ -119,6 +124,13 @@ static int com_router_fwd_send_back(int serial_ch_id,
 
 /* =========================== 核心: 数据接收回调 =========================== */
 
+/*
+ * 路由优先级:
+ *   1. 匹配 forward_rule.sock_fd  → 透传到目标通道 (维护透传)
+ *   2. 通道 bind_app 非空         → 整帧投递给注册的协议模块回调
+ *   3. bind_app 为空 (FTU 串口)   → 按帧内容分路 (ICP67/IEC 帧识别)
+ */
+
 void com_router_recv_cb(int id, int fd, const unsigned char *p_rx, int rx_len)
 {
 	com_channel_t *ch = NULL;
@@ -155,7 +167,24 @@ void com_router_recv_cb(int id, int fd, const unsigned char *p_rx, int rx_len)
 		return;
 	}
 
-	/* Step 2: FTU 串口接收 → 按帧分路 */
+	/* Step 2: bind_app 协议绑定 → 直接投递给注册的协议模块 */
+	if('\0' != ch->bind_app[0])
+	{
+		com_router_dispatch_cb dispatch = com_router_dispatch_find(ch->bind_app);
+
+		if(NULL != dispatch)
+		{
+			uint32_t interface = ((uint32_t)id << 16) | (uint32_t)fd;
+
+			dispatch(interface, p_rx, rx_len);
+			return;
+		}
+
+		LOG_E("com_router: bind_app [%s] has no dispatch registered", ch->bind_app);
+		return;
+	}
+
+	/* Step 3: bind_app 为空 → FTU 串口按帧内容分路 */
 
 	/* a) ICP67 维护软件回复 (dev_addr=0) */
 	if(rx_len >= (int)sizeof(stru_head)