🔍 feat: Web Search via OpenAI Responses API (#8186)

* 🔍 feat: Introduce Web Search Functionality for OpenAI API

- Added a new web_search parameter to enable web search capabilities in the OpenAI configuration.
- Updated the DynamicSlider component for improved styling.
- Enhanced the useSetIndexOptions hook to auto-enable the Responses API when web search is activated.
- Modified relevant schemas, types, and translation files to support the new web search feature.

* chore: remove comments

* refactor: tool handling in initializeAgent for better clarity and functionality and reflection of openai features

---------

Co-authored-by: Danny Avila <danny@librechat.ai>

api/server/services/Endpoints/agents/agent.js

@@ -85,7 +85,7 @@ const initializeAgent = async ({
   });
 
   const provider = agent.provider;
-  const { tools, toolContextMap } =
+  const { tools: structuredTools, toolContextMap } =
     (await loadTools?.({
       req,
       res,
@@ -140,12 +140,20 @@ const initializeAgent = async ({
     agent.provider = options.provider;
   }
 
+  /** @type {import('@librechat/agents').GenericTool[]} */
+  let tools = options.tools ?? structuredTools;
   if (
     (agent.provider === Providers.GOOGLE || agent.provider === Providers.VERTEXAI) &&
-    options?.tools?.length &&
-    tools?.length
+    options.tools?.length &&
+    structuredTools?.length
   ) {
     throw new Error(`{ "type": "${ErrorTypes.GOOGLE_TOOL_CONFLICT}"}`);
+  } else if (
+    (agent.provider === Providers.OPENAI || agent.provider === Providers.AZURE) &&
+    options.tools?.length &&
+    structuredTools?.length
+  ) {
+    tools = structuredTools.concat(options.tools);
   }
 
   /** @type {import('@librechat/agents').ClientOptions} */
@@ -173,7 +181,7 @@ const initializeAgent = async ({
     attachments,
     resendFiles,
     toolContextMap,
-    tools: options.tools ?? tools,
+    tools,
     maxContextTokens: (agentMaxContextTokens - maxTokens) * 0.9,
   };
 };