feat: add announce delivery mode for automation runs

src/config/schema.test.ts

@@ -1059,6 +1059,16 @@ describe('configSchema automation', () => {
     expect(result.automation.delivery_mode).toBe('isolated_job');
   });
 
+  it('accepts announce automation delivery mode', () => {
+    const result = configSchema.parse({
+      ...baseConfig,
+      automation: {
+        delivery_mode: 'announce',
+      },
+    });
+    expect(result.automation.delivery_mode).toBe('announce');
+  });
+
   it('accepts config with cron jobs', () => {
     const result = configSchema.parse({
       ...baseConfig,