🚀 refactor: Enhance Custom Endpoints, Message Logic, and Payload Handling (#2895)

* chore: use node-fetch for OpenAIClient fetch key for non-crashing usage of AbortController in Bun runtime

* chore: variable order

* fix(useSSE): prevent finalHandler call in abortConversation to update messages/conversation after user navigated away

* chore: params order

* refactor: organize intermediate message logic and ensure correct variables are passed

* fix: Add stt and tts routes before upload limiters, prevent bans

* fix(abortRun): temp fix to delete unfinished messages to avoid message thread parent relationship issues

* refactor: Update AnthropicClient to use node-fetch for fetch key and add proxy support

* fix(gptPlugins): ensure parentMessageId/messageId relationship is maintained

* feat(BaseClient): custom fetch function to analyze/edit payloads just before sending (also prevents abortController crash on Bun runtime)

* feat: `directEndpoint` and `titleMessageRole` custom endpoint options

* chore: Bump version to 0.6.6 in data-provider package.json

packages/data-provider/src/config.ts

@@ -198,6 +198,8 @@ export const endpointSchema = z.object({
   addParams: z.record(z.any()).optional(),
   dropParams: z.array(z.string()).optional(),
   customOrder: z.number().optional(),
+  directEndpoint: z.boolean().optional(),
+  titleMessageRole: z.string().optional(),
 });
 
 export type TEndpoint = z.infer<typeof endpointSchema>;
@@ -747,7 +749,7 @@ export enum Constants {
   /** Key for the app's version. */
   VERSION = 'v0.7.2',
   /** Key for the Custom Config's version (librechat.yaml). */
-  CONFIG_VERSION = '1.1.2',
+  CONFIG_VERSION = '1.1.3',
   /** Standard value for the first message's `parentMessageId` value, to indicate no parent exists. */
   NO_PARENT = '00000000-0000-0000-0000-000000000000',
   /** Fixed, encoded domain length for Azure OpenAI Assistants Function name parsing. */