feat: add scheduled summary notifications

docs/deployment/configuration.md

@@ -92,6 +92,10 @@ from API responses.
 | `notifications.alert_failure_threshold_count` | Failed messages in the last day before alerting | `100` | `250` |
 | `notifications.alert_missing_reports_enabled` | Alert when a monitored domain stops receiving reports | `true` | `true` |
 | `notifications.alert_missing_reports_days` | Days without reports before alerting | `2` | `3` |
+| `notifications.summary_daily_enabled` | Send one daily DMARC activity summary | `false` | `true` |
+| `notifications.summary_weekly_enabled` | Send one weekly DMARC activity summary | `false` | `true` |
+| `notifications.summary_send_hour_utc` | UTC hour for scheduled summaries | `8` | `7` |
+| `notifications.summary_weekday_utc` | UTC weekday for weekly summaries, where 0 is Monday | `0` | `4` |
 
 ### Cloudflare Integration
 

docs/development/roadmap.md

@@ -83,7 +83,7 @@ Follow-up:
 
 ## Later Milestones
 
-- Notifications and alert rules. Apprise delivery, test notifications, and current alert-rule evaluation are in place; scheduled summaries and alert history remain.
+- Notifications and alert rules. Apprise delivery, test notifications, alert-rule evaluation, and scheduled daily/weekly summaries are in place; alert history remains.
 - DNS health and Cloudflare read-only inspection.
 - Guided setup and operator health screens.
 - Forensic/RUF report support.

docs/milestones.md

@@ -116,9 +116,9 @@ Delivered:
 - Notification settings UI can save Apprise targets, keeps target URLs redacted after save, and can send a test notification.
 - Alert rules for new sender source, compliance drop, DMARC failures above threshold, and missing reports.
 - Notification settings UI can evaluate active alerts and send the current alert summary on demand.
+- Daily and weekly DMARC summary notifications, including scheduled delivery and manual preview/send controls.
 
 Planned:
-- Daily/weekly summary notifications.
 - Alert history.
 
 Exit criteria:

docs/todo.md

@@ -166,7 +166,7 @@ Status: Complete for the delivered reporting milestone. Alert-specific dashboard
 - [x] Add release checklist covering migrations, tests, and smoke checks
 - [x] Add Apprise notification delivery and test notification support
 - [x] Add alert rules for new sender source, compliance drop, DMARC failures above threshold, and missing reports
-- [ ] Add daily and weekly summary notifications
+- [x] Add daily and weekly summary notifications
 - [ ] Add alert history
 - [ ] DNS health guidance and Cloudflare read-only inspection
 - [ ] Guided setup and operator health pages

docs/user_guide/settings.md

@@ -54,6 +54,15 @@ Set alert rules and thresholds in **Settings** > **Notifications**:
 Use **Check Alerts** to preview the current alert count, or **Send Alerts Now** to
 send the current alert summary through the configured Apprise targets.
 
+### Summary Notifications
+
+Configure daily or weekly summaries in **Settings** > **Notifications**:
+
+- **Daily Summary**: sends one summary after the configured UTC hour each day
+- **Weekly Summary**: sends one summary on the configured UTC weekday
+- **Preview Summary**: shows message volume, report count, and active alert count
+- **Send Summary Now**: sends the selected daily or weekly summary immediately
+
 ### Integration Notifications
 
 Apprise supports email, Slack, Teams, Discord, generic webhooks, and many other