UI 代码纳入规范检查：大括号 K&R 化、strcpy 换 memcpy 等违规修复

- pre-commit 配置：移除 Drivers/BSP/UI/ 整目录排除，14 个 UI 源文件全部受 cppcheck + 规范检查
- ui_net_sink.c：11 处 Allman 大括号归并 K&R，i/c 声明改即用
- ui_port.c：7 处大括号归并
- ui_net_sink_backend_mcu.c：2 处大括号归并
- ui_menu_view.c：menu_frame_t 指针改 const
- ui_page_net_cfg.c：6 处 strcpy 改 memcpy

验证：pre-commit 全钩子通过、模拟器 0 警、菜单/内容页像素回归 PASS、Keil 0 错 0 警

Drivers/BSP/UI/ui_page_net_cfg.c

@@ -127,24 +127,30 @@ static void nc_refresh(uint16_t row, char *name, char *value) {
 
     switch (row) {
         case 0u:
-            (void)strcpy(name, "IP地址");
+            (void)memcpy(name, "IP地址", sizeof("IP地址"));
             net_cfg_fmt_ipv4(cfg->ip, value, NC_ROW_BUF_LEN);
             break;
         case 1u:
-            (void)strcpy(name, "子网掩码");
+            (void)memcpy(name, "子网掩码", sizeof("子网掩码"));
             net_cfg_fmt_ipv4(cfg->mask, value, NC_ROW_BUF_LEN);
             break;
         case 2u:
-            (void)strcpy(name, "默认网关");
+            (void)memcpy(name, "默认网关", sizeof("默认网关"));
             net_cfg_fmt_ipv4(cfg->gw, value, NC_ROW_BUF_LEN);
             break;
         case 3u:
-            (void)strcpy(name, "MAC地址");
+            (void)memcpy(name, "MAC地址", sizeof("MAC地址"));
             nc_fmt_value(row, value);
             break;
         case 4u:
-            (void)strcpy(name, "保存");
-            (void)strcpy(value, (s_saved == 0u) ? "ENTER" : ((s_saved == 1u) ? "OK" : "ERR"));
+            (void)memcpy(name, "保存", sizeof("保存"));
+            if (s_saved == 0u) {
+                (void)memcpy(value, "ENTER", sizeof("ENTER"));
+            } else if (s_saved == 1u) {
+                (void)memcpy(value, "OK", sizeof("OK"));
+            } else {
+                (void)memcpy(value, "ERR", sizeof("ERR"));
+            }
             break;
         default:
             break;