feat(config): 添加 hci_ipc 网络核配置，优化 DLE 和 ACL 缓冲区设置

src/ble_transport.c

@@ -62,6 +62,7 @@ static void disconnected(struct bt_conn *conn, uint8_t reason) {
 /** @brief NUS 通知使能状态回调。 */
 static void nus_send_enabled(enum bt_nus_send_status status) {
     nus_notification_enabled = (status == BT_NUS_SEND_STATUS_ENABLED);
+    LOG_INF("NUS send_enabled: status=%d, enabled=%d", status, nus_notification_enabled);
 }
 
 /**
@@ -106,10 +107,19 @@ void ble_transport_adv_start(void) {
 }
 
 void ble_transport_send(const uint8_t *data, uint16_t len) {
+    static bool first_send_logged = false;
+
     if (!nus_notification_enabled || !current_conn) return;
 
     for (int i = 0; i < 3; i++) {
-        if (bt_nus_send(current_conn, data, len) == 0) return;
+        int err = bt_nus_send(current_conn, data, len);
+        if (err == 0) {
+            if (!first_send_logged) {
+                LOG_INF("First NUS send OK (len=%u)", len);
+                first_send_logged = true;
+            }
+            return;
+        }
         k_usleep(500);
     }
     LOG_WRN("NUS send failed after retries (len=%u)", len);