Clean duplicate dashboard status messages

Clean duplicate Status dashboard messages by marker, preserve the tracked message, and avoid full-channel purge on startup.

src/dashboard-message-cleanup.test.ts

@@ -0,0 +1,88 @@
+import { describe, expect, it, vi } from 'vitest';
+
+import {
+  cleanupDashboardDuplicateMessages,
+  purgeDashboardMessages,
+} from './dashboard-message-cleanup.js';
+
+function makeChannel(deleteRecentMessagesByContent: any) {
+  return {
+    name: 'discord',
+    connect: vi.fn(),
+    sendMessage: vi.fn(),
+    isConnected: () => true,
+    ownsJid: () => true,
+    disconnect: vi.fn(),
+    deleteRecentMessagesByContent,
+  };
+}
+
+describe('cleanupDashboardDuplicateMessages', () => {
+  it('deletes recent dashboard messages except the tracked status message', async () => {
+    const deleteRecentMessagesByContent = vi.fn(async () => 3);
+    const deleted = await cleanupDashboardDuplicateMessages(
+      {
+        statusChannelId: 'status-channel',
+        channels: [makeChannel(deleteRecentMessagesByContent)],
+      },
+      'tracked-message',
+    );
+
+    expect(deleted).toBe(3);
+    expect(deleteRecentMessagesByContent).toHaveBeenCalledWith(
+      'dc:status-channel',
+      {
+        contentIncludes: '🤖 *모델 구성*',
+        exceptMessageId: 'tracked-message',
+        limit: 100,
+      },
+    );
+  });
+
+  it('skips cleanup when there is no tracked status message yet', async () => {
+    const deleteRecentMessagesByContent = vi.fn(async () => 3);
+    const deleted = await cleanupDashboardDuplicateMessages(
+      {
+        statusChannelId: 'status-channel',
+        channels: [makeChannel(deleteRecentMessagesByContent)],
+      },
+      null,
+    );
+
+    expect(deleted).toBe(0);
+    expect(deleteRecentMessagesByContent).not.toHaveBeenCalled();
+  });
+});
+
+describe('purgeDashboardMessages', () => {
+  it('deletes dashboard marker messages without purging the whole channel', async () => {
+    const deleteRecentMessagesByContent = vi.fn(async () => 2);
+    const deleted = await purgeDashboardMessages({
+      statusChannelId: 'status-channel',
+      channels: [makeChannel(deleteRecentMessagesByContent)],
+    });
+
+    expect(deleted).toBe(2);
+    expect(deleteRecentMessagesByContent).toHaveBeenCalledWith(
+      'dc:status-channel',
+      {
+        contentIncludes: '🤖 *모델 구성*',
+        limit: 100,
+      },
+    );
+  });
+
+  it('continues deleting dashboard batches until the last batch is partial', async () => {
+    const deleteRecentMessagesByContent = vi
+      .fn()
+      .mockResolvedValueOnce(100)
+      .mockResolvedValueOnce(7);
+    const deleted = await purgeDashboardMessages({
+      statusChannelId: 'status-channel',
+      channels: [makeChannel(deleteRecentMessagesByContent)],
+    });
+
+    expect(deleted).toBe(107);
+    expect(deleteRecentMessagesByContent).toHaveBeenCalledTimes(2);
+  });
+});