config: 通道配置 + 模块启停配置

- channel_cfg.json: 新增 tcp_ftu 网口通道 (127.0.0.1:54321 TCP 客户端)
- app_config.json: 启用 plc 模块

config/CHANNEL/channel_cfg.json

@@ -1,15 +1,5 @@
 {
     "channels": [
-        {
-            "key":       "serial_ftu",
-            "type":      "uart",
-            "device":    "/dev/ttyS1",
-            "baudrate":  115200,
-            "data_bits": 8,
-            "stop_bits": 1,
-            "parity":    "N",
-            "desc":      "FTU串口 — 帧内容分路 (ICP67 dev=0/IEC→转发源, dev=1→self_ptl)"
-        },
         {
             "key":        "tcp_master",
             "type":       "tcp_server",
@@ -17,6 +7,13 @@
             "local_port": 2404,
             "bind_app":   "iec",
             "desc":       "IEC-104主站通道 (:2404) — com_router直接投递给libiec"
+        },
+        {
+            "key":         "tcp_ftu",
+            "type":        "tcp_client",
+            "remote_ip":   "127.0.0.1",
+            "remote_port": 54321,
+            "desc":        "FTU网口通道 — TCP客户端连接PC上FTU数据转发 (127.0.0.1:54321)"
         }
     ],
     "forward_rules": [

config/SYSTEM/app_config.json

@@ -1,7 +1,9 @@
 {
     "apps": [
-        {"name": "app_modbus_m", "enable": true},
+        {"name": "app_web_server", "enable": true},
+        {"name": "app_com_router", "enable": true},
         {"name": "app_self_ptl", "enable": true},
-        {"name": "app_com_router", "enable": true}
+        {"name": "app_iec", "enable": true},
+        {"name": "app_plc", "enable": true}
     ]
 }