feat: support concurrent Reddit accounts

packages/api-contracts/src/chats.ts

@@ -1,5 +1,6 @@
 import { z } from 'zod';
 import { ErrorResponseSchema, RejectedActionResponseSchema } from './common.js';
+import { RedditAccountOwnerSchema } from './session.js';
 
 export const ChatMediaSchema = z.strictObject({
   originalUrl: z.string(),
@@ -25,6 +26,7 @@ export const ActiveChatSchema = z.strictObject({
   messages: z.array(ChatMessageSchema).optional(),
   originMessage: z.string().optional(),
   hasReceivedImages: z.boolean().optional(),
+  owner: RedditAccountOwnerSchema.optional(),
 });
 export const ChatsResponseSchema = z.array(ActiveChatSchema);
 export const ConversationsResponseSchema = ChatsResponseSchema;
@@ -75,6 +77,7 @@ export const ConversationDetailResponseSchema = ActiveChatSchema.extend({
 export const SuggestedReplyResponseSchema = z.strictObject({ suggestedReply: z.string() });
 export const SendReplyRequestSchema = z.strictObject({ message: z.string().min(1) });
 export const StartConversationRequestSchema = z.strictObject({
+  accountId: z.string().min(1),
   username: z.string().min(1),
   message: z.string().min(1),
 });