fix(frontend): use storage_provider_config instead of legacy storage_config

The backend introduced storage_provider_config as the authoritative
field in commit dbab7b0, but the frontend was never updated to use it.
This caused the UI to always display "local" regardless of the actual
storage provider, and saving KB settings could overwrite the correct
storage_provider_config with an incorrect value.

Changes:
- KnowledgeBaseEditorModal.vue: read from storage_provider_config with
  storage_config fallback, dual-write both fields on save
- KnowledgeBaseList.vue: update feature badge logic and add type def
  for storage_provider_config, exclude "local" from badge display
- api/knowledge-base/index.ts: add storage_provider_config to API type
- ko-KR.ts, ru-RU.ts: add missing i18n keys — multimodal section
  (sidebar.multimodal, multimodal.title/description), channel labels
  (channelLabel, channelWeb, channelApi, etc.), and agent.think

Author: ochanism

frontend/src/api/knowledge-base/index.ts

@@ -19,7 +19,8 @@ export function createKnowledgeBase(data: {
     enabled: boolean;
     model_id?: string;
   };
-  storage_config?: any;
+  storage_provider_config?: { provider: string };
+  storage_config?: any; // legacy, kept for backward compat (dual-write)
   extract_config?: any;
   faq_config?: { index_mode: string; question_index_mode?: string };
 }) {

frontend/src/i18n/locales/ko-KR.ts

@@ -129,6 +129,17 @@ export default {
     typeURL: "웹페이지",
     typeManual: "수동 생성",
     typeFile: "파일",
+    channelLabel: "출처 채널",
+    channelWeb: "웹",
+    channelApi: "API",
+    channelBrowserExtension: "브라우저 확장",
+    channelWechat: "WeChat",
+    channelWecom: "WeCom",
+    channelFeishu: "Feishu",
+    channelDingtalk: "DingTalk",
+    channelSlack: "Slack",
+    channelIm: "IM 채널",
+    channelUnknown: "알 수 없음",
     urlSource: "원본 URL",
     documentTitle: "문서 제목",
     webContent: "웹페이지 내용",
@@ -1016,6 +1027,7 @@ export default {
   },
   agent: {
     taskLabel: "작업:",
+    think: "사고",
     copy: "복사",
     addToKnowledgeBase: "지식베이스에 추가",
     updatePlan: "계획 업데이트",
@@ -1941,6 +1953,7 @@ export default {
       advanced: "고급 설정",
       faq: "FAQ 설정",
       graph: "지식 그래프",
+      multimodal: "멀티모달",
       share: "공유관리",
       storage: "스토리지 엔진",
       datasource: "데이터 소스",
@@ -2154,6 +2167,10 @@ export default {
       childChunkSizeLabel: "자식 청크 크기",
       childChunkSizeDescription: "임베딩 매칭에 사용되는 자식 청크의 문자 수 (64-1024)",
     },
+    multimodal: {
+      title: "멀티모달 설정",
+      description: "멀티모달 콘텐츠 이해 기능을 설정합니다. 활성화하면 이미지 등 텍스트가 아닌 콘텐츠의 파싱 및 검색을 지원합니다.",
+    },
     advanced: {
       title: "고급 설정",
       description: "질문 생성, 멀티모달 등 고급 기능 설정",

frontend/src/i18n/locales/ru-RU.ts

@@ -110,6 +110,17 @@ export default {
     typeURL: 'URL',
     typeManual: 'Вручную',
     typeFile: 'Файл',
+    channelLabel: 'Канал источника',
+    channelWeb: 'Веб',
+    channelApi: 'API',
+    channelBrowserExtension: 'Расширение браузера',
+    channelWechat: 'WeChat',
+    channelWecom: 'WeCom',
+    channelFeishu: 'Feishu',
+    channelDingtalk: 'DingTalk',
+    channelSlack: 'Slack',
+    channelIm: 'IM канал',
+    channelUnknown: 'Неизвестно',
     urlSource: 'Исходный URL',
     documentTitle: 'Название документа',
     webContent: 'Веб-содержимое',
@@ -272,6 +283,7 @@ export default {
   },
   agent: {
     taskLabel: 'Задача:',
+    think: 'Размышление',
     copy: 'Копировать',
     addToKnowledgeBase: 'Добавить в базу знаний',
     updatePlan: 'Обновить план',
@@ -1627,6 +1639,7 @@ export default {
       advanced: 'Дополнительные настройки',
       faq: 'FAQ настройки',
       graph: 'Граф знаний',
+      multimodal: 'Мультимодальность',
       storage: 'Storage Engine',
       datasource: 'Источники данных',
       share: 'Sharing'
@@ -1820,6 +1833,10 @@ export default {
       childChunkSizeLabel: 'Размер дочернего блока',
       childChunkSizeDescription: 'Размер дочерних блоков для поиска по эмбеддингам (64-1024)'
     },
+    multimodal: {
+      title: 'Мультимодальная конфигурация',
+      description: 'Настройка понимания мультимодального контента для парсинга и поиска нетекстового содержимого, такого как изображения',
+    },
     advanced: {
       title: 'Расширенные настройки',
       description: 'Настройте генерацию вопросов и мультимодальные возможности',

frontend/src/views/knowledge/KnowledgeBaseEditorModal.vue

@@ -438,7 +438,7 @@ const loadKBData = async () => {
         parentChunkSize: kb.chunking_config?.parent_chunk_size || 4096,
         childChunkSize: kb.chunking_config?.child_chunk_size || 384
       },
-      storageProvider: (kb.storage_config?.provider || 'local') as string,
+      storageProvider: (kb.storage_provider_config?.provider || kb.storage_config?.provider || 'local') as string,
       multimodalConfig: {
         enabled: !!kb.vlm_config?.enabled,
         vllmModelId: kb.vlm_config?.model_id || ''
@@ -594,6 +594,10 @@ const buildSubmitData = () => {
   }
 
   // 存储引擎：仅传 provider，参数从全局设置读取
+  // Write to storage_provider_config (authoritative) + storage_config (legacy dual-write)
+  data.storage_provider_config = {
+    provider: formData.value.storageProvider || 'local'
+  }
   data.storage_config = {
     provider: formData.value.storageProvider || 'local'
   }
@@ -713,7 +717,7 @@ const doSubmit = async () => {
         multimodal: {
           enabled: !!data.vlm_config?.enabled
         },
-        storageProvider: data.storage_config?.provider || 'local',
+        storageProvider: data.storage_provider_config?.provider || data.storage_config?.provider || 'local',
         nodeExtract: {
           enabled: data.extract_config?.enabled || false,
           text: data.extract_config?.text || '',

frontend/src/views/knowledge/KnowledgeBaseList.vue

@@ -219,7 +219,7 @@
                     <t-icon name="relation" size="14px" />
                   </div>
                 </t-tooltip>
-                <t-tooltip v-if="kb.vlm_config?.enabled || (kb.storage_config?.provider && kb.storage_config?.bucket_name)" :content="$t('knowledgeList.features.multimodal')" placement="top">
+                <t-tooltip v-if="kb.vlm_config?.enabled || (kb.storage_provider_config?.provider && kb.storage_provider_config.provider !== 'local')" :content="$t('knowledgeList.features.multimodal')" placement="top">
                   <div class="feature-badge multimodal">
                     <t-icon name="image" size="14px" />
                   </div>
@@ -324,7 +324,7 @@
                   <t-icon name="relation" size="14px" />
                 </div>
               </t-tooltip>
-              <t-tooltip v-if="kb.vlm_config?.enabled || (kb.storage_config?.provider && kb.storage_config?.bucket_name)" :content="$t('knowledgeList.features.multimodal')" placement="top">
+              <t-tooltip v-if="kb.vlm_config?.enabled || (kb.storage_provider_config?.provider && kb.storage_provider_config.provider !== 'local')" :content="$t('knowledgeList.features.multimodal')" placement="top">
                 <div class="feature-badge multimodal">
                   <t-icon name="image" size="14px" />
                 </div>
@@ -632,7 +632,8 @@ interface KB {
   showMore?: boolean;
   vlm_config?: { enabled?: boolean; model_id?: string };
   extract_config?: { enabled?: boolean };
-  storage_config?: { provider?: string; bucket_name?: string };
+  storage_provider_config?: { provider?: string };
+  storage_config?: { provider?: string; bucket_name?: string }; // legacy
   question_generation_config?: { enabled?: boolean; question_count?: number };
   knowledge_count?: number;
   chunk_count?: number;