🆕 feat: Enhanced Title Generation Config Options (#8580)

* 🏗️ refactor: Extract reasoning key logic into separate function

* refactor: Ensure `overrideProvider` is always defined in `getProviderConfig` result, and only used in `initializeAgent` if different from `agent.provider`

* feat: new title configuration options across services

- titlePrompt
- titleEndpoint
- titlePromptTemplate
- new "completion" titleMethod (new default)

* chore: update @librechat/agents and conform openai version to prevent SDK errors

* chore: add form-data package as a dependency and override to v4.0.4 to address CVE-2025-7783

* feat: add support for 'all' endpoint configuration in AppService and corresponding tests

* refactor: replace HttpsProxyAgent with ProxyAgent from undici for improved proxy handling in assistant initialization

* chore: update frontend review workflow to limit package paths to data-provider

* chore: update backend review workflow to include all package paths

api/server/controllers/agents/client.js

@@ -15,6 +15,7 @@ const {
   Callback,
   Providers,
   GraphEvents,
+  TitleMethod,
   formatMessage,
   formatAgentMessages,
   getTokenCountForMessage,
@@ -1009,7 +1010,7 @@ class AgentClient extends BaseClient {
     }
     const { handleLLMEnd, collected: collectedMetadata } = createMetadataAggregator();
     const { req, res, agent } = this.options;
-    const endpoint = agent.endpoint;
+    let endpoint = agent.endpoint;
 
     /** @type {import('@librechat/agents').ClientOptions} */
     let clientOptions = {
@@ -1017,17 +1018,32 @@ class AgentClient extends BaseClient {
       model: agent.model_parameters.model,
     };
 
-    const { getOptions, overrideProvider, customEndpointConfig } =
-      await getProviderConfig(endpoint);
+    let titleProviderConfig = await getProviderConfig(endpoint);
 
     /** @type {TEndpoint | undefined} */
-    const endpointConfig = req.app.locals[endpoint] ?? customEndpointConfig;
+    const endpointConfig =
+      req.app.locals.all ?? req.app.locals[endpoint] ?? titleProviderConfig.customEndpointConfig;
     if (!endpointConfig) {
       logger.warn(
         '[api/server/controllers/agents/client.js #titleConvo] Error getting endpoint config',
       );
     }
 
+    if (endpointConfig?.titleEndpoint && endpointConfig.titleEndpoint !== endpoint) {
+      try {
+        titleProviderConfig = await getProviderConfig(endpointConfig.titleEndpoint);
+        endpoint = endpointConfig.titleEndpoint;
+      } catch (error) {
+        logger.warn(
+          `[api/server/controllers/agents/client.js #titleConvo] Error getting title endpoint config for ${endpointConfig.titleEndpoint}, falling back to default`,
+          error,
+        );
+        // Fall back to original provider config
+        endpoint = agent.endpoint;
+        titleProviderConfig = await getProviderConfig(endpoint);
+      }
+    }
+
     if (
       endpointConfig &&
       endpointConfig.titleModel &&
@@ -1036,7 +1052,7 @@ class AgentClient extends BaseClient {
       clientOptions.model = endpointConfig.titleModel;
     }
 
-    const options = await getOptions({
+    const options = await titleProviderConfig.getOptions({
       req,
       res,
       optionsOnly: true,
@@ -1045,7 +1061,7 @@ class AgentClient extends BaseClient {
       endpointOption: { model_parameters: clientOptions },
     });
 
-    let provider = options.provider ?? overrideProvider ?? agent.provider;
+    let provider = options.provider ?? titleProviderConfig.overrideProvider ?? agent.provider;
     if (
       endpoint === EModelEndpoint.azureOpenAI &&
       options.llmConfig?.azureOpenAIApiInstanceName == null
@@ -1078,16 +1094,23 @@ class AgentClient extends BaseClient {
       ),
     );
 
-    if (provider === Providers.GOOGLE) {
+    if (
+      provider === Providers.GOOGLE &&
+      (endpointConfig?.titleMethod === TitleMethod.FUNCTIONS ||
+        endpointConfig?.titleMethod === TitleMethod.STRUCTURED)
+    ) {
       clientOptions.json = true;
     }
 
     try {
       const titleResult = await this.run.generateTitle({
         provider,
+        clientOptions,
         inputText: text,
         contentParts: this.contentParts,
-        clientOptions,
+        titleMethod: endpointConfig?.titleMethod,
+        titlePrompt: endpointConfig?.titlePrompt,
+        titlePromptTemplate: endpointConfig?.titlePromptTemplate,
         chainOptions: {
           signal: abortController.signal,
           callbacks: [