feat(video): 集成可灵AI多图参考生视频生成服务

- 替换视频生成服务为可灵AI多图参考生视频API，支持1-4张多视角图片输入
- 调整图片拼接逻辑，生成横向长图传入即梦API备用
- 实现基于JWT认证的可灵API请求和轮询机制，支持高品质1:1正方形视频生成
- 在设计详情页新增视频展示区域及生成、重新生成和下载视频操作
- 更新后台系统配置，支持配置可灵AI Access Key和Secret Key
- 删除即梦视频相关配置及逻辑，所有视频生成功能切换到可灵AI实现
- 优化视频生成提示词，提升视频质感和展示效果
- 增加视频文件本地存储和路径管理，保证视频可访问和下载
- 前端增加视频生成状态管理和用户界面交互提示
- 后端添加PyJWT依赖，支持JWT认证流程

frontend/src/views/admin/ConfigManage.vue

@@ -97,45 +97,38 @@
       </el-form>
     </div>
 
-    <!-- 即梦视频生成配置卡片 -->
+    <!-- 可灵AI 视频生成配置卡片 -->
     <div class="section-card">
       <div class="card-header">
         <div class="card-title-row">
-          <h3 class="section-title">即梦 3.0 Pro 视频生成</h3>
-          <el-tag :type="volcVideoStatus" size="small">
-            {{ volcVideoStatusText }}
+          <h3 class="section-title">可灵 AI 视频生成</h3>
+          <el-tag :type="klingVideoStatus" size="small">
+            {{ klingVideoStatusText }}
           </el-tag>
         </div>
-        <p class="card-desc">火山引擎即梦 3.0 Pro 图生视频 API，将设计图生成 360 度旋转展示视频。需要火山引擎 Access Key 和 Secret Key（非 API Key）</p>
+        <p class="card-desc">可灵 AI 多图参考生视频 API，支持传入多张参考图（1-4张），AI 理解为同一物体多角度参考，生成单品 360 度旋转展示视频</p>
       </div>
       <el-form label-width="120px" class="config-form">
         <el-form-item label="Access Key">
           <el-input
-            v-model="volcAccessKey"
+            v-model="klingAccessKey"
             type="password"
             show-password
-            placeholder="请输入火山引擎 Access Key"
+            placeholder="请输入可灵 AI Access Key"
             clearable
           />
         </el-form-item>
         <el-form-item label="Secret Key">
           <el-input
-            v-model="volcSecretKey"
+            v-model="klingSecretKey"
             type="password"
             show-password
-            placeholder="请输入火山引擎 Secret Key"
+            placeholder="请输入可灵 AI Secret Key"
             clearable
           />
         </el-form-item>
         <el-form-item>
-          <span class="form-tip">获取方式：火山引擎控制台 → 右上角头像 → API访问密钥，或访问 https://console.volcengine.com/iam/keymanage/</span>
-        </el-form-item>
-        <el-form-item label="视频时长">
-          <el-select v-model="videoFrames" style="width: 200px">
-            <el-option label="2 秒（快速预览）" value="49" />
-            <el-option label="5 秒（完整展示）" value="121" />
-          </el-select>
-          <span class="form-tip">推荐 5 秒，足够展示完整 360 度旋转</span>
+          <span class="form-tip">获取方式：访问 <a href="https://klingai.com" target="_blank">可灵AI开放平台</a> → 注册/登录 → 控制台 → API密钥管理</span>
         </el-form-item>
         <el-form-item label="视频提示词">
           <el-input
@@ -144,7 +137,7 @@
             :rows="3"
             placeholder="玉雕作品在摄影棚内缓慢旋转360度展示全貌..."
           />
-          <span class="form-tip">用于控制视频生成效果，尽情描述旋转展示方式、灯光、背景等</span>
+          <span class="form-tip">用于控制视频生成效果，留空使用默认提示词</span>
         </el-form-item>
       </el-form>
     </div>
@@ -230,12 +223,11 @@ const siliconflowKey = ref('')
 const siliconflowUrl = ref('https://api.siliconflow.cn/v1')
 const volcengineKey = ref('')
 const volcengineUrl = ref('https://ark.cn-beijing.volces.com/api/v3')
-const volcAccessKey = ref('')
-const volcSecretKey = ref('')
+const klingAccessKey = ref('')
+const klingSecretKey = ref('')
 const tencentSecretId = ref('')
 const tencentSecretKey = ref('')
 const videoPrompt = ref('')
-const videoFrames = ref('121')
 const model3dPrompt = ref('')
 const imageSize = ref('1024')
 const saving = ref(false)
@@ -243,8 +235,8 @@ const saving = ref(false)
 // 后端是否已配置 API Key（脱敏值也算已配置）
 const siliconflowConfigured = ref(false)
 const volcengineConfigured = ref(false)
-const volcAccessKeyConfigured = ref(false)
-const volcSecretKeyConfigured = ref(false)
+const klingAccessKeyConfigured = ref(false)
+const klingSecretKeyConfigured = ref(false)
 const tencentSecretIdConfigured = ref(false)
 const tencentSecretKeyConfigured = ref(false)
 
@@ -259,8 +251,8 @@ const siliconflowStatus = computed(() => (siliconflowKey.value || siliconflowCon
 const siliconflowStatusText = computed(() => (siliconflowKey.value || siliconflowConfigured.value) ? '已配置' : '未配置')
 const volcengineStatus = computed(() => (volcengineKey.value || volcengineConfigured.value) ? 'success' : 'info')
 const volcengineStatusText = computed(() => (volcengineKey.value || volcengineConfigured.value) ? '已配置' : '未配置')
-const volcVideoStatus = computed(() => ((volcAccessKey.value || volcAccessKeyConfigured.value) && (volcSecretKey.value || volcSecretKeyConfigured.value)) ? 'success' : 'info')
-const volcVideoStatusText = computed(() => ((volcAccessKey.value || volcAccessKeyConfigured.value) && (volcSecretKey.value || volcSecretKeyConfigured.value)) ? '已配置' : '未配置')
+const klingVideoStatus = computed(() => ((klingAccessKey.value || klingAccessKeyConfigured.value) && (klingSecretKey.value || klingSecretKeyConfigured.value)) ? 'success' : 'info')
+const klingVideoStatusText = computed(() => ((klingAccessKey.value || klingAccessKeyConfigured.value) && (klingSecretKey.value || klingSecretKeyConfigured.value)) ? '已配置' : '未配置')
 const hunyuan3dStatus = computed(() => ((tencentSecretId.value || tencentSecretIdConfigured.value) && (tencentSecretKey.value || tencentSecretKeyConfigured.value)) ? 'success' : 'info')
 const hunyuan3dStatusText = computed(() => ((tencentSecretId.value || tencentSecretIdConfigured.value) && (tencentSecretKey.value || tencentSecretKeyConfigured.value)) ? '已配置' : '未配置')
 
@@ -288,14 +280,14 @@ const loadConfigs = async () => {
       volcengineKey.value = map['VOLCENGINE_API_KEY']
     }
     volcengineUrl.value = map['VOLCENGINE_BASE_URL'] || 'https://ark.cn-beijing.volces.com/api/v3'
-    // 即梦视频 Access Key / Secret Key
-    volcAccessKeyConfigured.value = !!map['VOLC_ACCESS_KEY']
-    volcSecretKeyConfigured.value = !!map['VOLC_SECRET_KEY']
-    if (map['VOLC_ACCESS_KEY'] && !map['VOLC_ACCESS_KEY'].includes('****')) {
-      volcAccessKey.value = map['VOLC_ACCESS_KEY']
+    // 可灵 AI Access Key / Secret Key
+    klingAccessKeyConfigured.value = !!map['KLING_ACCESS_KEY']
+    klingSecretKeyConfigured.value = !!map['KLING_SECRET_KEY']
+    if (map['KLING_ACCESS_KEY'] && !map['KLING_ACCESS_KEY'].includes('****')) {
+      klingAccessKey.value = map['KLING_ACCESS_KEY']
     }
-    if (map['VOLC_SECRET_KEY'] && !map['VOLC_SECRET_KEY'].includes('****')) {
-      volcSecretKey.value = map['VOLC_SECRET_KEY']
+    if (map['KLING_SECRET_KEY'] && !map['KLING_SECRET_KEY'].includes('****')) {
+      klingSecretKey.value = map['KLING_SECRET_KEY']
     }
     // 腾讯云 SecretId / SecretKey
     tencentSecretIdConfigured.value = !!map['TENCENT_SECRET_ID']
@@ -308,7 +300,6 @@ const loadConfigs = async () => {
     }
     // 提示词配置
     videoPrompt.value = map['VIDEO_PROMPT'] || ''
-    videoFrames.value = map['VIDEO_FRAMES'] || '121'
     model3dPrompt.value = map['MODEL3D_PROMPT'] || ''
     imageSize.value = map['AI_IMAGE_SIZE'] || '1024'
   } catch (e) {
@@ -338,11 +329,11 @@ const handleSave = async () => {
     if (volcengineKey.value) {
       configs['VOLCENGINE_API_KEY'] = volcengineKey.value
     }
-    if (volcAccessKey.value) {
-      configs['VOLC_ACCESS_KEY'] = volcAccessKey.value
+    if (klingAccessKey.value) {
+      configs['KLING_ACCESS_KEY'] = klingAccessKey.value
     }
-    if (volcSecretKey.value) {
-      configs['VOLC_SECRET_KEY'] = volcSecretKey.value
+    if (klingSecretKey.value) {
+      configs['KLING_SECRET_KEY'] = klingSecretKey.value
     }
     if (tencentSecretId.value) {
       configs['TENCENT_SECRET_ID'] = tencentSecretId.value
@@ -352,7 +343,6 @@ const handleSave = async () => {
     }
     // 提示词始终提交（包括空值，允许清空）
     configs['VIDEO_PROMPT'] = videoPrompt.value
-    configs['VIDEO_FRAMES'] = videoFrames.value
     configs['MODEL3D_PROMPT'] = model3dPrompt.value
     await updateConfigsBatch(configs)
     ElMessage.success('配置已保存')