feat: add automation reactions event-trigger layer

src/config/schema.test.ts

@@ -1082,6 +1082,7 @@ describe('configSchema automation', () => {
     const result = configSchema.parse(baseConfig);
     expect(result.automation).toBeDefined();
     expect(result.automation.delivery_mode).toBe('shared_session');
+    expect(result.automation.reactions).toEqual([]);
     expect(result.automation.cron).toEqual([]);
     expect(result.automation.daily_briefing.enabled).toBe(false);
     expect(result.automation.daily_briefing.schedule).toBe('0 8 * * *');
@@ -1129,6 +1130,36 @@ describe('configSchema automation', () => {
     expect(result.automation.cron[0].enabled).toBe(true); // default
   });
 
+  it('accepts reactions config with filters', () => {
+    const result = configSchema.parse({
+      ...baseConfig,
+      automation: {
+        reactions: [{
+          name: 'boss-email',
+          on: ['gmail'],
+          filter: {
+            contains: 'boss@company.com',
+            regex: 'urgent|asap',
+            metadata: { from: 'boss@company.com' },
+          },
+          run: 'Summarize and propose next actions:\n\n{{text}}',
+        }],
+      },
+    });
+    expect(result.automation.reactions).toHaveLength(1);
+    expect(result.automation.reactions[0]).toMatchObject({
+      name: 'boss-email',
+      enabled: true,
+      on: ['gmail'],
+      run: 'Summarize and propose next actions:\n\n{{text}}',
+    });
+    expect(result.automation.reactions[0].filter).toMatchObject({
+      contains: 'boss@company.com',
+      regex: 'urgent|asap',
+      metadata: { from: 'boss@company.com' },
+    });
+  });
+
   it('rejects cron job with empty name', () => {
     expect(() => configSchema.parse({
       ...baseConfig,