fix(chat): stabilize message identities

src/stores/chat/machine/send-flow.ts

@@ -9,6 +9,7 @@ import {
   finishPendingReply,
   type HttpSendOutput,
 } from "../helper/send-state";
+import { createClientUiMessageIdentity } from "../ui-message";
 import { historyMachineSetup } from "./history-flow";
 import { createChatActorActionSetup } from "./setup";
 
@@ -36,6 +37,7 @@ const appendGuestUserMessageAction = historyMachineSetup.assign(
       messages: [
         ...context.messages,
         {
+          ...createClientUiMessageIdentity("message"),
           content: event.content,
           isFromAI: false,
           date: today,
@@ -63,6 +65,7 @@ const appendUserMessageAction = historyMachineSetup.assign(
       messages: [
         ...context.messages,
         {
+          ...createClientUiMessageIdentity("message"),
           content: event.content,
           isFromAI: false,
           date: today,
@@ -83,6 +86,7 @@ const appendQueuedSendErrorMessageAction = historyMachineSetup.assign(
     const messages = [
       ...context.messages,
       {
+        ...createClientUiMessageIdentity("error"),
         content: unavailable
           ? "This character is temporarily unavailable. Please try again shortly."
           : "Something went wrong. Try sending again?",
@@ -135,6 +139,7 @@ const appendGuestUserImageAction = historyMachineSetup.assign(
       messages: [
         ...context.messages,
         {
+          ...createClientUiMessageIdentity("image"),
           content: "[Image]",
           isFromAI: false,
           date: today,
@@ -162,6 +167,7 @@ const appendUserImageAction = historyMachineSetup.assign(
       messages: [
         ...context.messages,
         {
+          ...createClientUiMessageIdentity("image"),
           content: "[Image]",
           isFromAI: false,
           date: today,