🔍 feat: Anthropic Web Search (#8281)

* chore: bump @librechat/agents to ^2.4.54 for anthropic web search support

* WIP: hardcoded web search tool usage

* feat: Implement web search functionality in Anthropic integration

- Updated parameters panel to include web search for anthropic models.
- Updated necessary schemas to accomodate toggle functionality

* chore: Set default web search option to false in anthropicSettings

* refactor: Rename webSearch to web_search for consistency across settings and schemas

* chore: bump @librechat/agents to v2.4.55

---------

Co-authored-by: Dustin Healy <dustinhealy1@gmail.com>

api/server/services/Endpoints/anthropic/llm.js

@@ -78,7 +78,17 @@ function getLLMConfig(apiKey, options = {}) {
     requestOptions.anthropicApiUrl = options.reverseProxyUrl;
   }
 
+  const tools = [];
+
+  if (mergedOptions.web_search) {
+    tools.push({
+      type: 'web_search_20250305',
+      name: 'web_search',
+    });
+  }
+
   return {
+    tools,
     /** @type {AnthropicClientOptions} */
     llmConfig: removeNullishValues(requestOptions),
   };