feat(channels): add google chat adapter and webhook route

src/gateway/handlers/services.test.ts

@@ -32,6 +32,7 @@ function makeBaseConfig(): Config {
     matrix: undefined,
     signal: undefined,
     teams: undefined,
+    google_chat: undefined,
   } as unknown as Config;
 }
 
@@ -47,6 +48,7 @@ describe('discoverServices', () => {
       expect.objectContaining({ name: 'matrix', status: 'not_configured' }),
       expect.objectContaining({ name: 'signal', status: 'not_configured' }),
       expect.objectContaining({ name: 'teams', status: 'not_configured' }),
+      expect.objectContaining({ name: 'google_chat', 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

@@ -55,6 +55,7 @@ export function discoverServices(
     { key: 'matrix', name: 'matrix', description: 'Matrix bot' },
     { key: 'signal', name: 'signal', description: 'Signal bot (signal-cli)' },
     { key: 'teams', name: 'teams', description: 'Microsoft Teams bot' },
+    { key: 'google_chat', name: 'google_chat', description: 'Google Chat bot' },
   ];
 
   for (const { key, name, description } of channelConfigs) {