fix(mobile): default h5 dev proxy to local backend on 8080

Bare npm run dev (including hosted preview sessions) has no portless
route, so the previous default target https://wygj-api.localhost was
unreachable and every API call failed with HTTP 500. scripts/dev.sh now
passes VITE_PROXY_TARGET explicitly, keeping the portless flow intact.

mobile-uni/vite.config.ts

@@ -4,7 +4,9 @@ import uniPlugin from '@dcloudio/vite-plugin-uni';
 const uni = typeof uniPlugin === 'function' ? uniPlugin : uniPlugin.default;
 const devPort = Number(process.env.PORT) || 5175;
 const devHost = process.env.HOST || '0.0.0.0';
-const proxyTarget = process.env.VITE_PROXY_TARGET || 'https://wygj-api.localhost';
+// 裸跑 npm run dev（如 Kimi Work 预览）时代理到本地 8080 后端；
+// 走 portless（scripts/dev.sh）时由 VITE_PROXY_TARGET 显式指向 https://wygj-api.localhost
+const proxyTarget = process.env.VITE_PROXY_TARGET || 'http://127.0.0.1:8080';
 // 代理到线上等已带 /dev-api 前缀的网关时，设 VITE_PROXY_KEEP_PREFIX=1 保留前缀
 const keepProxyPrefix = process.env.VITE_PROXY_KEEP_PREFIX === '1';
 

scripts/dev.sh

@@ -249,7 +249,7 @@ PIDS+=("$!")
 
 if using_portless_mobile; then
   portless alias --remove wygj-mobile-uni >/dev/null 2>&1 || true
-  portless run --name wygj-mobile-uni --force npm --prefix mobile-uni run dev &
+  VITE_PROXY_TARGET="${VITE_PROXY_TARGET:-https://wygj-api.localhost}" portless run --name wygj-mobile-uni --force npm --prefix mobile-uni run dev &
 else
   ./scripts/dev-mobile.sh &
 fi