feat: label bot messages with role names in paired rooms

In paired rooms, bot messages now show sender as "오너" or "리뷰어"
instead of the Discord nickname. Uses channel.isOwnMessage() to
identify which bot sent each message, then maps via the channel
lease to determine the role. This ensures agents correctly identify
who is the owner and who is the reviewer regardless of bot nicknames.

src/message-runtime.ts

@@ -111,6 +111,47 @@ export function createMessageRuntime(deps: MessageRuntimeDeps): {
   const continuationTracker = createImplicitContinuationTracker(
     deps.idleTimeout,
   );
+  // In paired rooms, replace bot sender_name with role label so agents
+  // know who is the owner and who is the reviewer regardless of bot nickname.
+  const labelPairedSenders = (
+    chatJid: string,
+    messages: NewMessage[],
+  ): NewMessage[] => {
+    if (!isPairedRoomJid(chatJid)) return messages;
+    const lease = getEffectiveChannelLease(chatJid);
+    // Build bot-user-id → channel-name mapping from connected channels
+    const botIdToChannelName = new Map<string, string>();
+    for (const ch of deps.channels) {
+      if (!ch.isConnected()) continue;
+      // Probe each bot message to find which channel owns it
+      for (const msg of messages) {
+        if (msg.is_bot_message && ch.isOwnMessage?.(msg)) {
+          botIdToChannelName.set(msg.sender, ch.name);
+        }
+      }
+    }
+    // Map channel name → service ID
+    const channelToService: Record<string, string> = {
+      discord: 'claude',
+      'discord-codex': 'codex-main',
+      'discord-review': 'codex-review',
+    };
+    return messages.map((msg) => {
+      if (!msg.is_bot_message) return msg;
+      const channelName = botIdToChannelName.get(msg.sender);
+      if (!channelName) return msg;
+      const serviceId = channelToService[channelName];
+      if (!serviceId) return msg;
+      const role =
+        serviceId === lease.owner_service_id
+          ? '오너'
+          : serviceId === lease.reviewer_service_id
+            ? '리뷰어'
+            : msg.sender_name;
+      return { ...msg, sender_name: role };
+    });
+  };
+
   const isBotOnlyPairedRoomTurn = (
     chatJid: string,
     messages: NewMessage[],
@@ -677,7 +718,10 @@ export function createMessageRuntime(deps: MessageRuntimeDeps): {
         return true;
       }
 
-      const prompt = formatMessages(missedMessages, deps.timezone);
+      const prompt = formatMessages(
+        labelPairedSenders(chatJid, missedMessages),
+        deps.timezone,
+      );
       const startSeq = missedMessages[0].seq ?? null;
       const endSeq = missedMessages[missedMessages.length - 1].seq ?? null;
       if (endSeq !== null) {
@@ -881,7 +925,10 @@ export function createMessageRuntime(deps: MessageRuntimeDeps): {
               pendingMessages.length > 0
                 ? pendingMessages
                 : processableGroupMessages;
-            const formatted = formatMessages(messagesToSend, deps.timezone);
+            const formatted = formatMessages(
+              labelPairedSenders(chatJid, messagesToSend),
+              deps.timezone,
+            );
             const isBotOnlyPairedFollowUp = isBotOnlyPairedRoomTurn(
               chatJid,
               messagesToSend,