feat(repairs): automatic repair status emails

backend/hermes/app/api/dashboard.py

@@ -64,6 +64,9 @@ def get_dashboard_summary(
             MetricCard(label="In Reparatur", value=RepairRepository.count_by_status(db, "repair")),
             MetricCard(label="Endprüfung", value=RepairRepository.count_by_status(db, "final_test")),
             MetricCard(label="Abgeschlossen", value=RepairRepository.count_by_status(db, "completed")),
+            MetricCard(label="Statusmails heute", value=RepairRepository.count_status_mails_sent_today(db)),
+            MetricCard(label="Fehlgeschlagene Mails", value=RepairRepository.count_failed_status_mails(db)),
+            MetricCard(label="Offen ohne Kundenmail", value=RepairRepository.count_open_repairs_without_customer_email(db)),
         ]
 
     logger.info("dashboard.summary", extra={"actor_user_id": current_user.id})

backend/hermes/app/api/repairs.py

@@ -13,6 +13,7 @@ from app.schemas.repair import (
     RepairCreate,
     RepairIntakePayload,
     RepairIntakeResponse,
+    RepairNotificationEventResponse,
     RepairListResponse,
     RepairNotificationOverviewResponse,
     RepairPublicLinkCreateResponse,
@@ -171,6 +172,17 @@ def get_repair_notifications(
     return RepairNotificationService.overview(db, db_repair)
 
 
+@router.post("/repairs/{repair_id}/send-status-mail", response_model=RepairNotificationEventResponse)
+def send_repair_status_mail(
+    repair_id: int,
+    request: Request,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(require_permission("repairs.update")),
+):
+    db_repair = get_repair_or_404(db, repair_id)
+    return RepairNotificationService.send_status_mail(db, db_repair, actor=current_user, request=request, manual=True)
+
+
 @router.post("/public/repair-intake", response_model=RepairIntakeResponse, status_code=status.HTTP_201_CREATED)
 def create_repair_intake(
     payload: RepairIntakePayload,