feat(Proxy): Implement proxy management system

- Add ProxyManager service to handle system, custom, and no proxy configurations
- Integrate proxy support for Gemini, Knowledge, and WebDav services
- Add fetch-socks and undici for advanced proxy handling
- Enhance proxy configuration with environment variable and session management

src/main/services/KnowledgeService.ts

@@ -23,6 +23,7 @@ import { SitemapLoader } from '@llm-tools/embedjs-loader-sitemap'
 import { WebLoader } from '@llm-tools/embedjs-loader-web'
 import { AzureOpenAiEmbeddings, OpenAiEmbeddings } from '@llm-tools/embedjs-openai'
 import { addFileLoader } from '@main/loader'
+import { proxyManager } from '@main/services/ProxyManager'
 import { windowService } from '@main/services/WindowService'
 import { getInstanceName } from '@main/utils'
 import { getAllFiles } from '@main/utils/file'
@@ -123,13 +124,14 @@ class KnowledgeService {
               azureOpenAIApiVersion: apiVersion,
               azureOpenAIApiDeploymentName: model,
               azureOpenAIApiInstanceName: getInstanceName(baseURL),
+              configuration: { httpAgent: proxyManager.getProxyAgent() },
               dimensions,
               batchSize
             })
           : new OpenAiEmbeddings({
               model,
               apiKey,
-              configuration: { baseURL },
+              configuration: { baseURL, httpAgent: proxyManager.getProxyAgent() },
               dimensions,
               batchSize
             })
@@ -424,6 +426,7 @@ class KnowledgeService {
   }
 
   public add = (_: Electron.IpcMainInvokeEvent, options: KnowledgeBaseAddItemOptions): Promise<LoaderReturn> => {
+    proxyManager.setGlobalProxy()
     return new Promise((resolve) => {
       const { base, item, forceReload = false } = options
       const optionsNonNullableAttribute = { base, item, forceReload }