refactor: drive paired routing from room mode

src/service-routing.test.ts

@@ -1,6 +1,10 @@
 import { beforeEach, describe, expect, it } from 'vitest';
 
-import { _initTestDatabase, setRegisteredGroup } from './db.js';
+import {
+  _initTestDatabase,
+  setExplicitRoomMode,
+  setRegisteredGroup,
+} from './db.js';
 import {
   activateCodexFailover,
   clearGlobalFailover,
@@ -78,4 +82,47 @@ describe('service-routing global failover', () => {
       explicit: false,
     });
   });
+
+  it('uses explicit single room mode to suppress reviewer lease on dual registration', () => {
+    setRegisteredGroup('dc:explicit-single', {
+      name: 'Explicit Single Claude',
+      folder: 'explicit-single-claude',
+      trigger: '@Andy',
+      added_at: '2024-01-01T00:00:00.000Z',
+      agentType: 'claude-code',
+    });
+    setRegisteredGroup('dc:explicit-single', {
+      name: 'Explicit Single Codex',
+      folder: 'explicit-single-codex',
+      trigger: '@Codex',
+      added_at: '2024-01-01T00:00:00.000Z',
+      agentType: 'codex',
+    });
+    setExplicitRoomMode('dc:explicit-single', 'single');
+
+    expect(getEffectiveChannelLease('dc:explicit-single')).toMatchObject({
+      chat_jid: 'dc:explicit-single',
+      owner_service_id: 'codex-main',
+      reviewer_service_id: null,
+      explicit: false,
+    });
+  });
+
+  it('uses explicit tribunal room mode to add reviewer lease on solo rooms', () => {
+    setRegisteredGroup('dc:explicit-tribunal', {
+      name: 'Explicit Tribunal Claude',
+      folder: 'explicit-tribunal-claude',
+      trigger: '@Andy',
+      added_at: '2024-01-01T00:00:00.000Z',
+      agentType: 'claude-code',
+    });
+    setExplicitRoomMode('dc:explicit-tribunal', 'tribunal');
+
+    expect(getEffectiveChannelLease('dc:explicit-tribunal')).toMatchObject({
+      chat_jid: 'dc:explicit-tribunal',
+      owner_service_id: 'claude',
+      reviewer_service_id: 'claude',
+      explicit: false,
+    });
+  });
 });