🔧 fix: Error Handling Improvements (#1518)

* style(Icon): remove error bubble from message icon

* fix(custom): `initializeClient` now throws error if apiKey or baseURL are admin provided but no env var was found

* refactor(tPresetSchema): match `conversationId` type to `tConversationSchema` but optional, use `extendedModelEndpointSchema` for `endpoint`

* fix(useSSE): minor improvements
- use `completed` set to avoid submitting unecessary abort request
- set preset with `newConversation` calls using initial conversation settings to prevent default Preset override as well as default settings
- return if there is a parsing error within `onerror` as expected errors from server are properly formatted

packages/data-provider/src/schemas.ts

@@ -200,11 +200,12 @@ export const tPresetSchema = tConversationSchema
   })
   .merge(
     z.object({
-      conversationId: z.string().optional(),
+      conversationId: z.string().nullable().optional(),
       presetId: z.string().nullable().optional(),
       title: z.string().nullable().optional(),
       defaultPreset: z.boolean().optional(),
       order: z.number().optional(),
+      endpoint: extendedModelEndpointSchema.nullable(),
     }),
   );