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,

src/config/schema.ts

@@ -417,7 +417,7 @@ const minioSyncAutomationSchema = z.object({
   notify_on_success: z.boolean().default(false),
 }).default({});
 
-const automationDeliveryModeSchema = z.enum(['shared_session', 'isolated_job']);
+const automationDeliveryModeSchema = z.enum(['shared_session', 'isolated_job', 'announce']);
 
 const automationSchema = z.object({
   /** Session strategy for automation-triggered runs (cron/webhooks/gmail). */