feat(channels): add signal-cli channel adapter

src/gateway/handlers/services.test.ts

@@ -30,6 +30,7 @@ function makeBaseConfig(): Config {
     slack: undefined,
     whatsapp: undefined,
     matrix: undefined,
+    signal: undefined,
   } as unknown as Config;
 }
 
@@ -43,6 +44,7 @@ describe('discoverServices', () => {
     expect(services).toEqual(expect.arrayContaining([
       expect.objectContaining({ name: 'telegram', status: 'not_configured' }),
       expect.objectContaining({ name: 'matrix', status: 'not_configured' }),
+      expect.objectContaining({ name: 'signal', status: 'not_configured' }),
       expect.objectContaining({ name: 'cron', status: 'not_configured' }),
       expect.objectContaining({ name: 'mcp', status: 'not_configured' }),
       expect.objectContaining({ name: 'web_search', status: 'configured' }),

src/gateway/handlers/services.ts

@@ -53,6 +53,7 @@ export function discoverServices(
     { key: 'slack', name: 'slack', description: 'Slack app' },
     { key: 'whatsapp', name: 'whatsapp', description: 'WhatsApp gateway' },
     { key: 'matrix', name: 'matrix', description: 'Matrix bot' },
+    { key: 'signal', name: 'signal', description: 'Signal bot (signal-cli)' },
   ];
 
   for (const { key, name, description } of channelConfigs) {