fix: Resolve vllm bad request caused by always sending dimensions in embedding requests (#7525)

fix(知识库): 将dimensions字段改为可选并修复相关逻辑

src/renderer/src/pages/knowledge/components/AddKnowledgePopup.tsx

@@ -112,7 +112,7 @@ const PopupContainer: React.FC<Props> = ({ title, resolve }) => {
           return
         }
 
-        if (autoDims || typeof values.dimensions === 'undefined') {
+        if (autoDims || values.dimensions === undefined) {
           try {
             const aiProvider = new AiProvider(provider)
             values.dimensions = await aiProvider.getEmbeddingDimensions(selectedEmbeddingModel)
@@ -132,7 +132,7 @@ const PopupContainer: React.FC<Props> = ({ title, resolve }) => {
           name: values.name,
           model: selectedEmbeddingModel,
           rerankModel: selectedRerankModel,
-          dimensions: values.dimensions,
+          dimensions: autoDims ? undefined : values.dimensions,
           documentCount: values.documentCount || DEFAULT_KNOWLEDGE_DOCUMENT_COUNT,
           items: [],
           created_at: Date.now(),

src/renderer/src/types/index.ts

@@ -423,7 +423,7 @@ export interface KnowledgeBase {
   id: string
   name: string
   model: Model
-  dimensions: number
+  dimensions?: number
   description?: string
   items: KnowledgeItem[]
   created_at: number