Fix room thread bot output parity

Fix dashboard room thread rendering so regular Discord bot outputs from messages[] are shown when paired outputs are missing, while keeping watcher messages separated and deduplicating paired outputs.

apps/dashboard/src/roomThread.test.ts

@@ -0,0 +1,100 @@
+import { describe, expect, it } from 'vitest';
+
+import type { DashboardRoomActivity } from './api';
+import { buildRoomThreadEntries, isWatcherRoomMessage } from './roomThread';
+
+type RoomMessage = DashboardRoomActivity['messages'][number];
+type RoomOutput = NonNullable<
+  DashboardRoomActivity['pairedTask']
+>['outputs'][number];
+
+function message(overrides: Partial<RoomMessage>): RoomMessage {
+  return {
+    id: 'msg-1',
+    sender: 'user-1',
+    senderName: '눈쟁이',
+    content: 'hello',
+    timestamp: '2026-04-28T01:00:00.000Z',
+    isFromMe: false,
+    isBotMessage: false,
+    sourceKind: 'human',
+    ...overrides,
+  };
+}
+
+function output(overrides: Partial<RoomOutput>): RoomOutput {
+  return {
+    id: 1,
+    turnNumber: 1,
+    role: 'owner',
+    verdict: 'task_done',
+    createdAt: '2026-04-28T01:02:00.000Z',
+    outputText: 'TASK_DONE\n\nfinal output',
+    ...overrides,
+  };
+}
+
+describe('room thread entries', () => {
+  it('keeps regular bot messages so Discord-visible outputs appear in rooms', () => {
+    const entries = buildRoomThreadEntries({
+      messages: [
+        message({ id: 'human-1', content: '확인해줘' }),
+        message({
+          id: 'bot-1',
+          sender: 'bot-1',
+          senderName: '오너',
+          content: 'TASK_DONE\n\nprod 배포 완료',
+          timestamp: '2026-04-28T01:01:00.000Z',
+          isBotMessage: true,
+          sourceKind: 'bot',
+        }),
+      ],
+      outputs: [],
+    });
+
+    expect(entries.map((entry) => entry.id)).toEqual(['human-1', 'bot-1']);
+    expect(entries.at(-1)).toMatchObject({
+      senderName: '오너',
+      content: 'TASK_DONE\n\nprod 배포 완료',
+      sourceKind: 'bot',
+    });
+  });
+
+  it('keeps watcher messages out of the main room thread', () => {
+    const watcher = message({
+      id: 'watcher-1',
+      senderName: '리뷰어',
+      content: 'CI 완료: PR #1 Quality Check',
+      isBotMessage: true,
+      sourceKind: 'bot',
+    });
+
+    expect(isWatcherRoomMessage(watcher)).toBe(true);
+    expect(
+      buildRoomThreadEntries({ messages: [watcher], outputs: [] }),
+    ).toHaveLength(0);
+  });
+
+  it('deduplicates bot messages that are already present as paired outputs', () => {
+    const entries = buildRoomThreadEntries({
+      messages: [
+        message({
+          id: 'bot-duplicate',
+          senderName: '오너',
+          content: 'TASK_DONE\n\nfinal output',
+          timestamp: '2026-04-28T01:02:30.000Z',
+          isBotMessage: true,
+          sourceKind: 'bot',
+        }),
+      ],
+      outputs: [output({ id: 7 })],
+    });
+
+    expect(entries).toHaveLength(1);
+    expect(entries[0]).toMatchObject({
+      id: 'out:7',
+      sourceKind: 'agent_output',
+      turnNumber: 1,
+    });
+  });
+});