diff --git a/frontend/src/composables/useChat.js b/frontend/src/composables/useChat.js
index 4f0e1ce..a0de07e 100644
--- a/frontend/src/composables/useChat.js
+++ b/frontend/src/composables/useChat.js
@@ -92,8 +92,9 @@ export function useChat() {
       data_url: a.data_url,
     }))
     messages.value.push({ role: 'user', text: trimmed, attachments: localAttachments, created_at: now })
-    const assistant = { role: 'assistant', text: '', references: [], created_at: now }
-    messages.value.push(assistant)
+    messages.value.push({ role: 'assistant', text: '', references: [], created_at: now })
+    // 拿数组里的响应式代理，直接改原始对象绕过代理不会触发更新，SSE delta 会一直不动
+    const assistant = messages.value[messages.value.length - 1]
 
     streaming.value = true
     try {
diff --git a/frontend/src/stores/app.js b/frontend/src/stores/app.js
index d8fdf60..61dab0d 100644
--- a/frontend/src/stores/app.js
+++ b/frontend/src/stores/app.js
@@ -3,8 +3,13 @@ import { computed, ref } from 'vue'
 import { notify } from '@/utils/notify'
 
 export const useAppStore = defineStore('app', () => {
-  const defaultApiBase = import.meta.env.DEV ? 'http://127.0.0.1:8775' : window.location.origin
-  const apiBase = ref(localStorage.getItem('financeAiApiBase') || defaultApiBase)
+  const defaultApiBase = import.meta.env.DEV ? '' : window.location.origin
+  const storedApiBase = localStorage.getItem('financeAiApiBase')
+  const legacyDevBases = new Set(['http://127.0.0.1:8775', 'https://127.0.0.1:8775'])
+  const initialApiBase = import.meta.env.DEV && legacyDevBases.has(storedApiBase)
+    ? defaultApiBase
+    : (storedApiBase ?? defaultApiBase)
+  const apiBase = ref(initialApiBase)
   const token = ref(localStorage.getItem('financeAiToken') || '')
   const currentUser = ref(null)
   const healthy = ref(false)
diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index 8fedb6b..2ceea40 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -14,9 +14,14 @@ export default defineConfig({
     port: 5173,
     proxy: {
       '/api': {
-        target: 'http://127.0.0.1:8775',
+        target: 'https://127.0.0.1:8775',
         changeOrigin: true,
-        rewrite: (path) => path.replace(/^\/api/, ''),
+        secure: false,
+      },
+      '/health': {
+        target: 'https://127.0.0.1:8775',
+        changeOrigin: true,
+        secure: false,
       },
     },
   },