feat(automation): add timezone-safe daily briefing dedupe

src/config/schema.test.ts

@@ -863,6 +863,7 @@ describe('configSchema automation', () => {
     expect(result.automation.daily_briefing.enabled).toBe(false);
     expect(result.automation.daily_briefing.schedule).toBe('0 8 * * *');
     expect(result.automation.daily_briefing.name).toBe('daily-briefing');
+    expect(result.automation.daily_briefing.dedupe_per_local_day).toBe(true);
   });
 
   it('accepts isolated automation delivery mode', () => {
@@ -931,11 +932,13 @@ describe('configSchema automation', () => {
           output: { channel: 'telegram', peer: '123' },
           enabled: false,
           timezone: 'America/New_York',
+          once_per_local_day: true,
         }],
       },
     });
     expect(result.automation.cron[0].enabled).toBe(false);
     expect(result.automation.cron[0].timezone).toBe('America/New_York');
+    expect(result.automation.cron[0].once_per_local_day).toBe(true);
   });
 
   it('accepts daily briefing automation config', () => {
@@ -947,6 +950,7 @@ describe('configSchema automation', () => {
           name: 'weekday-briefing',
           schedule: '0 7 * * 1-5',
           timezone: 'America/New_York',
+          dedupe_per_local_day: false,
           output: { channel: 'telegram', peer: '123' },
           prompt: 'Custom briefing prompt',
           model_tier: 'fast',
@@ -958,6 +962,7 @@ describe('configSchema automation', () => {
     expect(result.automation.daily_briefing.name).toBe('weekday-briefing');
     expect(result.automation.daily_briefing.schedule).toBe('0 7 * * 1-5');
     expect(result.automation.daily_briefing.timezone).toBe('America/New_York');
+    expect(result.automation.daily_briefing.dedupe_per_local_day).toBe(false);
     expect(result.automation.daily_briefing.output).toEqual({ channel: 'telegram', peer: '123' });
     expect(result.automation.daily_briefing.prompt).toBe('Custom briefing prompt');
     expect(result.automation.daily_briefing.model_tier).toBe('fast');

src/config/schema.ts

@@ -251,6 +251,7 @@ const cronJobSchema = z.object({
   enabled: z.boolean().default(true),
   timezone: z.string().optional(),
   model_tier: modelTierEnum.optional(),
+  once_per_local_day: z.boolean().default(false),
 });
 
 const webhookSchema = z.object({
@@ -350,6 +351,7 @@ const dailyBriefingSchema = z.object({
   name: z.string().min(1).default('daily-briefing'),
   schedule: z.string().min(1).default('0 8 * * *'),
   timezone: z.string().optional(),
+  dedupe_per_local_day: z.boolean().default(true),
   output: z.object({
     channel: z.string().min(1),
     peer: z.string().min(1),