fix: restore historical order visibility for HartOMat admins

backend/app/api/routers/notifications.py

@@ -9,6 +9,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from sqlalchemy import select, func, update, or_, and_
 
 from app.database import get_db
+from app.domains.auth.models import PM_ROLES
 from app.models.audit_log import AuditLog
 from app.models.user import User
 from app.utils.auth import get_current_user
@@ -45,7 +46,7 @@ class MarkReadRequest(BaseModel):
 def _visibility_filter(user: User):
     """Rows visible to this user: targeted at them, or broadcast (null) if admin/PM."""
     targeted = AuditLog.target_user_id == user.id
-    if user.role.value in ("admin", "project_manager"):
+    if user.role.value in PM_ROLES:
         broadcast = AuditLog.target_user_id.is_(None)
         return and_(AuditLog.notification == True, or_(targeted, broadcast))  # noqa: E712
     return and_(AuditLog.notification == True, targeted)  # noqa: E712