feat(repairs): add repair management foundation

backend/hermes/app/api/dashboard.py

@@ -9,6 +9,7 @@ from app.db.database import get_db
 from app.models.rbac import Role
 from app.models.user import User
 from app.repositories.customer_repository import CustomerRepository
+from app.repositories.repair_repository import RepairRepository
 from app.repositories.user_repository import UserRepository
 from app.schemas.dashboard import DashboardSummary, EmptyWidget, MetricCard
 
@@ -30,6 +31,7 @@ def get_dashboard_summary(
     latest_customers = []
     users: list[MetricCard] = []
     roles: list[MetricCard] = []
+    repairs: list[MetricCard] = []
 
     if "customers.read" in permissions:
         customers = [
@@ -54,6 +56,14 @@ def get_dashboard_summary(
             )
         ]
 
+    if "repairs.read" in permissions:
+        repairs = [
+            MetricCard(label="Neue Reparaturen", value=RepairRepository.count_by_status(db, "new")),
+            MetricCard(label="In Diagnose", value=RepairRepository.count_by_status(db, "diagnosis")),
+            MetricCard(label="Warten auf Kunde", value=RepairRepository.count_by_status(db, "waiting_for_customer")),
+            MetricCard(label="Abgeschlossen", value=RepairRepository.count_by_status(db, "completed")),
+        ]
+
     logger.info("dashboard.summary", extra={"actor_user_id": current_user.id})
 
     return DashboardSummary(
@@ -61,6 +71,7 @@ def get_dashboard_summary(
         latest_customers=latest_customers,
         users=users,
         roles=roles,
+        repairs=repairs,
         activities=EmptyWidget(
             title="Letzte Aktivitäten",
             message="Noch keine Aktivitäten vorhanden.",