feat: label AI-generated conversation messages

src/web/routes/conversations.ts

@@ -4,6 +4,7 @@ import type { WebContext } from '../context.js';
 import {
   buildConversationState,
   chooseConversationIntent,
+  conversationMessageFingerprint,
   mergeConversationState,
   remainingAutomationTurns,
 } from '../../services/conversation-state.js';
@@ -169,12 +170,14 @@ export function createConversationsRouter(ctx: WebContext): Router {
         imageUrl: string | null;
         sentAt: number;
       } | null = null;
+      let automatedOpener: string | null = null;
       try {
         const messagesRepo = resolved.runtime?.resources.messagesRepo ?? ctx.repos.messages;
         const sent = conversation.roomId
           ? messagesRepo.getByChatRoomId(conversation.roomId)
             ?? messagesRepo.getLatestByRecipient(conversation.username)
           : messagesRepo.getLatestByRecipient(conversation.username);
+        automatedOpener = sent?.message ?? null;
         if (sent && sent.postId) {
           const url = sent.postUrl ?? (sent.subreddit
             ? `https://www.reddit.com/r/${sent.subreddit}/comments/${sent.postId}/`
@@ -205,9 +208,25 @@ export function createConversationsRouter(ctx: WebContext): Router {
         intelligence.state.automation.handoffReason = intelligence.state.boundaries.join('; ');
       }
       if (conversation.roomId) stateRepo?.save(conversation.roomId, intelligence.state);
+      const aiFingerprints = new Map<string, number>();
+      if (automatedOpener) {
+        aiFingerprints.set(conversationMessageFingerprint(automatedOpener), 1);
+      }
+      for (const fingerprint of intelligence.state.automation.aiMessageFingerprints) {
+        aiFingerprints.set(fingerprint, (aiFingerprints.get(fingerprint) ?? 0) + 1);
+      }
+      const annotatedMessages = conversation.messages?.map((message) => {
+        if (!message.isSelf) return message;
+        const fingerprint = conversationMessageFingerprint(message.text);
+        const remainingMatches = aiFingerprints.get(fingerprint) ?? 0;
+        if (remainingMatches === 0) return message;
+        aiFingerprints.set(fingerprint, remainingMatches - 1);
+        return { ...message, isAi: true };
+      });
 
       res.json({
         ...conversation,
+        ...(annotatedMessages ? { messages: annotatedMessages } : {}),
         owner: resolved.runtime
           ? { accountId: resolved.runtime.session.accountId, redditUsername: resolved.runtime.session.redditUsername }
           : currentOwner(),