feat(ui): support batch endpoint creation with multiple API formats (#76)

Replace single API format selector with multi-select checkbox interface in endpoint creation dialog. Users can now select multiple API formats to create multiple endpoints simultaneously with shared configuration (URL, path, timeout, etc.).

- Change API format selection from dropdown to checkbox grid layout
- Add selectedFormats array to track multiple format selections
- Implement batch creation logic with individual error handling
- Update submit button to show endpoint count being created
- Adjust form layout to improve visual hierarchy
- Display appropriate success/failure messages for batch operations
- Reset selectedFormats on form reset

frontend/src/features/providers/components/EndpointFormDialog.vue

@@ -20,44 +20,45 @@
           API 配置
         </h3>
 
-        <div class="grid grid-cols-2 gap-4">
-          <!-- API 格式 -->
-          <div class="space-y-2">
-            <Label for="api_format">API 格式 *</Label>
-            <template v-if="isEditMode">
-              <Input
-                id="api_format"
-                v-model="form.api_format"
-                disabled
-                class="bg-muted"
-              />
-              <p class="text-xs text-muted-foreground">
-                API 格式创建后不可修改
-              </p>
-            </template>
-            <template v-else>
-              <Select
-                v-model="form.api_format"
-                v-model:open="selectOpen"
-                required
+        <!-- API 格式 -->
+        <div class="space-y-2">
+          <Label for="api_format">API 格式 *</Label>
+          <template v-if="isEditMode">
+            <Input
+              id="api_format"
+              v-model="form.api_format"
+              disabled
+              class="bg-muted"
+            />
+            <p class="text-xs text-muted-foreground">
+              API 格式创建后不可修改
+            </p>
+          </template>
+          <template v-else>
+            <div class="grid grid-cols-2 gap-3">
+              <label
+                v-for="format in apiFormats"
+                :key="format.value"
+                class="flex items-center gap-3 rounded-lg border p-4 cursor-pointer transition-colors hover:bg-accent"
+                :class="selectedFormats.includes(format.value) ? 'border-primary bg-accent' : 'border-border'"
               >
-                <SelectTrigger>
-                  <SelectValue placeholder="请选择 API 格式" />
-                </SelectTrigger>
-                <SelectContent>
-                  <SelectItem
-                    v-for="format in apiFormats"
-                    :key="format.value"
-                    :value="format.value"
-                  >
-                    {{ format.label }}
-                  </SelectItem>
-                </SelectContent>
-              </Select>
-            </template>
-          </div>
+                <input
+                  type="checkbox"
+                  :value="format.value"
+                  v-model="selectedFormats"
+                  class="h-4 w-4 text-primary focus:ring-2 focus:ring-primary rounded"
+                />
+                <span class="text-sm font-medium">{{ format.label }}</span>
+              </label>
+            </div>
+            <p class="text-xs text-muted-foreground">
+              选择一个或多个 API 格式，将为每个格式创建独立的端点
+            </p>
+          </template>
+        </div>
 
-          <!-- API URL -->
+        <!-- API URL 和自定义路径 -->
+        <div class="grid grid-cols-2 gap-4">
           <div class="space-y-2">
             <Label for="base_url">API URL *</Label>
             <Input
@@ -67,16 +68,18 @@
               required
             />
           </div>
-        </div>
 
-        <!-- 自定义路径 -->
-        <div class="space-y-2">
-          <Label for="custom_path">自定义请求路径（可选）</Label>
-          <Input
-            id="custom_path"
-            v-model="form.custom_path"
-            :placeholder="defaultPathPlaceholder"
-          />
+          <div class="space-y-2">
+            <Label for="custom_path">自定义请求路径（可选）</Label>
+            <Input
+              id="custom_path"
+              v-model="form.custom_path"
+              :placeholder="isEditMode ? defaultPathPlaceholder : '留空使用各格式的默认路径'"
+            />
+            <p v-if="!isEditMode && selectedFormats.length > 0" class="text-xs text-muted-foreground">
+              将为所有选中的格式使用相同的 URL 和路径配置
+            </p>
+          </div>
         </div>
       </div>
 
@@ -217,10 +220,10 @@
         取消
       </Button>
       <Button
-        :disabled="loading || !form.base_url || (!isEditMode && !form.api_format)"
+        :disabled="loading || !form.base_url || (!isEditMode && selectedFormats.length === 0)"
         @click="handleSubmit()"
       >
-        {{ loading ? (isEditMode ? '保存中...' : '创建中...') : (isEditMode ? '保存修改' : '创建') }}
+        {{ loading ? (isEditMode ? '保存中...' : '创建中...') : (isEditMode ? '保存修改' : `创建 ${selectedFormats.length} 个端点`) }}
       </Button>
     </template>
   </Dialog>
@@ -306,6 +309,9 @@ const form = ref({
   proxy_password: '',
 })
 
+// 选中的 API 格式（多选）
+const selectedFormats = ref<string[]>([])
+
 // API 格式列表
 const apiFormats = ref<Array<{ value: string; label: string; default_path: string; aliases: string[] }>>([])
 
@@ -400,6 +406,7 @@ function resetForm() {
     proxy_username: '',
     proxy_password: '',
   }
+  selectedFormats.value = []
   proxyEnabled.value = false
 }
 
@@ -479,6 +486,8 @@ const handleSubmit = async (skipCredentialCheck = false) => {
   }
 
   loading.value = true
+  let successCount = 0
+  
   try {
     const proxyConfig = buildProxyConfig()
 
@@ -497,27 +506,52 @@ const handleSubmit = async (skipCredentialCheck = false) => {
 
       success('端点已更新', '保存成功')
       emit('endpointUpdated')
+      emit('update:modelValue', false)
     } else if (props.provider) {
-      // 创建端点
-      await createEndpoint(props.provider.id, {
-        provider_id: props.provider.id,
-        api_format: form.value.api_format,
-        base_url: form.value.base_url,
-        custom_path: form.value.custom_path || undefined,
-        timeout: form.value.timeout,
-        max_retries: form.value.max_retries,
-        max_concurrent: form.value.max_concurrent,
-        rate_limit: form.value.rate_limit,
-        is_active: form.value.is_active,
-        proxy: proxyConfig,
-      })
+      // 批量创建端点
+      let failCount = 0
+      const errors: string[] = []
 
-      success('端点创建成功', '成功')
-      emit('endpointCreated')
-      resetForm()
+      for (const apiFormat of selectedFormats.value) {
+        try {
+          await createEndpoint(props.provider.id, {
+            provider_id: props.provider.id,
+            api_format: apiFormat,
+            base_url: form.value.base_url,
+            custom_path: form.value.custom_path || undefined,
+            timeout: form.value.timeout,
+            max_retries: form.value.max_retries,
+            max_concurrent: form.value.max_concurrent,
+            rate_limit: form.value.rate_limit,
+            is_active: form.value.is_active,
+            proxy: proxyConfig,
+          })
+          successCount++
+        } catch (error: any) {
+          failCount++
+          const formatLabel = apiFormats.value.find((f: any) => f.value === apiFormat)?.label || apiFormat
+          errors.push(`${formatLabel}: ${error.response?.data?.detail || '创建失败'}`)
+        }
+      }
+
+      // 显示结果
+      if (successCount > 0 && failCount === 0) {
+        success(`成功创建 ${successCount} 个端点`, '创建成功')
+      } else if (successCount > 0 && failCount > 0) {
+        success(`成功创建 ${successCount} 个端点，${failCount} 个失败`, '部分成功')
+        if (errors.length > 0) {
+          log.error('创建端点失败:', errors)
+        }
+      } else {
+        showError(errors.join('\n') || '创建端点失败', '创建失败')
+      }
+
+      if (successCount > 0) {
+        emit('endpointCreated')
+        resetForm()
+        emit('update:modelValue', false)
+      }
     }
-
-    emit('update:modelValue', false)
   } catch (error: any) {
     const action = isEditMode.value ? '更新' : '创建'
     showError(error.response?.data?.detail || `${action}端点失败`, '错误')