🔄 fix: Assistants Endpoint & Minor Issues (#7274)

* 🔄 fix: Include usage in stream options for OpenAI and Azure endpoints

* fix: Agents support for Azure serverless endpoints

* fix: Refactor condition for assistants and azureAssistants endpoint handling

* AWS Titan via Bedrock: model doesn't support system messages, Closes #6456

* fix: Add EndpointSchemaKey type to endpoint parameters in buildDefaultConvo and ensure assistantId is always defined

* fix: Handle new conversation state for assistants endpoint in finalHandler

* fix: Add spec and iconURL parameters to `saveAssistantMessage` to persist modelSpec fields

* fix: Handle assistant unlinking even if no valid files to delete

* chore: move type definitions from callbacks.js to typedefs.js

* chore: Add StandardGraph typedef to typedefs.js

* chore: Update parameter type for graph in ModelEndHandler to StandardGraph

---------

Co-authored-by: Andres Restrepo <andres@enric.ai>

api/server/controllers/agents/callbacks.js

@@ -14,15 +14,6 @@ const { loadAuthValues } = require('~/server/services/Tools/credentials');
 const { saveBase64Image } = require('~/server/services/Files/process');
 const { logger, sendEvent } = require('~/config');
 
-/** @typedef {import('@librechat/agents').Graph} Graph */
-/** @typedef {import('@librechat/agents').EventHandler} EventHandler */
-/** @typedef {import('@librechat/agents').ModelEndData} ModelEndData */
-/** @typedef {import('@librechat/agents').ToolEndData} ToolEndData */
-/** @typedef {import('@librechat/agents').ToolEndCallback} ToolEndCallback */
-/** @typedef {import('@librechat/agents').ChatModelStreamHandler} ChatModelStreamHandler */
-/** @typedef {import('@librechat/agents').ContentAggregatorResult['aggregateContent']} ContentAggregator */
-/** @typedef {import('@librechat/agents').GraphEvents} GraphEvents */
-
 class ModelEndHandler {
   /**
    * @param {Array<UsageMetadata>} collectedUsage
@@ -38,7 +29,7 @@ class ModelEndHandler {
    * @param {string} event
    * @param {ModelEndData | undefined} data
    * @param {Record<string, unknown> | undefined} metadata
-   * @param {Graph} graph
+   * @param {StandardGraph} graph
    * @returns
    */
   handle(event, data, metadata, graph) {

api/server/controllers/agents/client.js

@@ -58,7 +58,7 @@ const payloadParser = ({ req, agent, endpoint }) => {
 
 const legacyContentEndpoints = new Set([KnownEndpoints.groq, KnownEndpoints.deepseek]);
 
-const noSystemModelRegex = [/\b(o1-preview|o1-mini)\b/gi];
+const noSystemModelRegex = [/\b(o1-preview|o1-mini|amazon\.titan-text)\b/gi];
 
 // const { processMemory, memoryInstructions } = require('~/server/services/Endpoints/agents/memory');
 // const { getFormattedMemories } = require('~/models/Memory');

api/server/controllers/assistants/chatV1.js

@@ -119,7 +119,7 @@ const chatV1 = async (req, res) => {
     } else if (/Files.*are invalid/.test(error.message)) {
       const errorMessage = `Files are invalid, or may not have uploaded yet.${
         endpoint === EModelEndpoint.azureAssistants
-          ? ' If using Azure OpenAI, files are only available in the region of the assistant\'s model at the time of upload.'
+          ? " If using Azure OpenAI, files are only available in the region of the assistant's model at the time of upload."
           : ''
       }`;
       return sendResponse(req, res, messageData, errorMessage);
@@ -379,8 +379,8 @@ const chatV1 = async (req, res) => {
         body.additional_instructions ? `${body.additional_instructions}\n` : ''
       }The user has uploaded ${imageCount} image${pluralized}.
       Use the \`${ImageVisionTool.function.name}\` tool to retrieve ${
-  plural ? '' : 'a '
-}detailed text description${pluralized} for ${plural ? 'each' : 'the'} image${pluralized}.`;
+        plural ? '' : 'a '
+      }detailed text description${pluralized} for ${plural ? 'each' : 'the'} image${pluralized}.`;
 
       return files;
     };
@@ -576,6 +576,8 @@ const chatV1 = async (req, res) => {
       thread_id,
       model: assistant_id,
       endpoint,
+      spec: endpointOption.spec,
+      iconURL: endpointOption.iconURL,
     };
 
     sendMessage(res, {

api/server/controllers/assistants/chatV2.js

@@ -428,6 +428,8 @@ const chatV2 = async (req, res) => {
       thread_id,
       model: assistant_id,
       endpoint,
+      spec: endpointOption.spec,
+      iconURL: endpointOption.iconURL,
     };
 
     sendMessage(res, {