fix: 移除所有硬编码的localhost:8080，使用相对路径

- 创建utils/config.ts集中管理API_BASE和文件URL
- 删除.env文件（VITE_SERVER_API_URL=http://localhost:8080）
- env.ts默认API前缀改为/api/v1匹配后端路由
- 替换16处硬编码的localhost:8080引用

frontend/src/pages/admin/agent-apps/[id]/card-types.vue

@@ -5,6 +5,7 @@ import { useRoute, useRouter } from 'vue-router'
 import { toast } from 'vue-sonner'
 
 import { BasicPage } from '@/components/global-layout'
+import { API_BASE } from '@/utils/config'
 
 interface CardType {
   id: number
@@ -23,7 +24,6 @@ interface CardTypePermission {
 
 const route = useRoute()
 const router = useRouter()
-const API_BASE = 'http://localhost:8080/api/v1'
 
 const loading = ref(true)
 const saving = ref(false)

frontend/src/pages/admin/agent-apps/[id]/edit.vue

@@ -7,10 +7,10 @@ import { toast } from 'vue-sonner'
 import type { AgentApp } from '@/pages/admin/agent-apps/data/schema'
 
 import { BasicPage } from '@/components/global-layout'
+import { API_BASE } from '@/utils/config'
 
 const route = useRoute()
 const router = useRouter()
-const API_BASE = 'http://localhost:8080/api/v1'
 
 const loading = ref(true)
 const saving = ref(false)

frontend/src/pages/admin/agent-apps/[id]/recharge.vue

@@ -5,10 +5,10 @@ import { useRoute, useRouter } from 'vue-router'
 import { toast } from 'vue-sonner'
 
 import { BasicPage } from '@/components/global-layout'
+import { API_BASE } from '@/utils/config'
 
 const route = useRoute()
 const router = useRouter()
-const API_BASE = 'http://localhost:8080/api/v1'
 
 const loading = ref(true)
 const saving = ref(false)

frontend/src/pages/admin/agent-apps/invite.vue

@@ -5,9 +5,9 @@ import { useRouter } from 'vue-router'
 import { toast } from 'vue-sonner'
 
 import { BasicPage } from '@/components/global-layout'
+import { API_BASE } from '@/utils/config'
 
 const router = useRouter()
-const API_BASE = 'http://localhost:8080/api/v1'
 
 const saving = ref(false)
 const applications = ref<Array<{ id: number, name: string }>>([])

frontend/src/pages/admin/agent-apps/request.vue

@@ -5,9 +5,9 @@ import { useRouter } from 'vue-router'
 import { toast } from 'vue-sonner'
 
 import { BasicPage } from '@/components/global-layout'
+import { API_BASE } from '@/utils/config'
 
 const router = useRouter()
-const API_BASE = 'http://localhost:8080/api/v1'
 
 const saving = ref(false)
 const applications = ref<Array<{ id: number, name: string }>>([])

frontend/src/pages/admin/applications/[id]/security.vue

@@ -5,11 +5,10 @@ import { useRoute } from 'vue-router'
 import { toast } from 'vue-sonner'
 
 import { BasicPage } from '@/components/global-layout'
+import { API_BASE } from '@/utils/config'
 
 const route = useRoute()
 
-const API_BASE = 'http://localhost:8080/api/v1'
-
 const loading = ref(false)
 const saving = ref(false)
 

frontend/src/pages/admin/applications/[id]/settings.vue

@@ -5,11 +5,10 @@ import { useRoute } from 'vue-router'
 import { toast } from 'vue-sonner'
 
 import { BasicPage } from '@/components/global-layout'
+import { API_BASE } from '@/utils/config'
 
 const route = useRoute()
 
-const API_BASE = 'http://localhost:8080/api/v1'
-
 const loading = ref(false)
 const saving = ref(false)
 

frontend/src/pages/admin/applications/components/app-card.vue

@@ -4,6 +4,8 @@ import { useRouter } from 'vue-router'
 
 import type { App } from '../data/schema'
 
+import { getFileUrl } from '@/utils/config'
+
 const props = defineProps<{
   app: App
 }>()
@@ -25,7 +27,7 @@ function formatDate(date: string | Date) {
       <div class="flex items-start justify-between">
         <div class="flex items-center gap-3">
           <div class="size-10 rounded-lg bg-primary/10 flex items-center justify-center">
-            <img v-if="props.app.icon_url" :src="props.app.icon_url.startsWith('http') ? props.app.icon_url : `http://localhost:8080${props.app.icon_url}`" class="size-6 object-cover rounded" alt="" />
+            <img v-if="props.app.icon_url" :src="getFileUrl(props.app.icon_url)" class="size-6 object-cover rounded" alt="" />
             <Box v-else class="size-6 text-primary" />
           </div>
           <div>

frontend/src/pages/admin/applications/components/columns.ts

@@ -22,6 +22,7 @@ import {
   DropdownMenuSeparator,
   DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu'
+import { getFileUrl } from '@/utils/config'
 
 export function getColumns(actions: {
   onGoToSettings: (app: App) => void
@@ -55,7 +56,7 @@ export function getColumns(actions: {
         h('div', { class: 'h-8 w-8 rounded bg-primary/10 flex items-center justify-center flex-shrink-0 overflow-hidden' }, [
           row.original.icon_url
             ? h('img', {
-                src: `http://localhost:8080${row.original.icon_url}`,
+                src: getFileUrl(row.original.icon_url),
                 alt: row.getValue('name') as string,
                 class: 'w-full h-full object-cover',
               })

frontend/src/pages/admin/applications/create.vue

@@ -5,10 +5,9 @@ import { useRouter } from 'vue-router'
 import { toast } from 'vue-sonner'
 
 import { BasicPage } from '@/components/global-layout'
+import { API_BASE } from '@/utils/config'
 
 const router = useRouter()
-
-const API_BASE = 'http://localhost:8080/api/v1'
 const loading = ref(false)
 const showSuccessDialog = ref(false)
 const createdAppId = ref<number | null>(null)

frontend/src/pages/admin/card-types/index.vue

@@ -11,11 +11,11 @@ import ConfirmDialog from '@/components/confirm-dialog.vue'
 import SingleFilter from '@/components/data-table/single-filter.vue'
 import { BasicPage } from '@/components/global-layout'
 import DataTable from '@/pages/admin/card-types/components/data-table.vue'
+import { API_BASE } from '@/utils/config'
 
 const { t } = useI18n()
 
 const router = useRouter()
-const API_BASE = 'http://localhost:8080/api/v1'
 
 interface Application {
   id: string

frontend/src/pages/admin/dynamic-code.vue

@@ -2,7 +2,7 @@
 import { Code, Eye, Loader2 } from 'lucide-vue-next'
 import { onMounted, ref } from 'vue'
 
-const API_BASE = 'http://localhost:8080/api/v1'
+import { API_BASE } from '@/utils/config'
 
 interface DynamicCode {
   id: string