Added soft deletes to all deletion functions and added deleted_at filters as required

gatehouse_app/services/zerotier_reconciliation_service.py

@@ -283,9 +283,9 @@ def reconcile_deleted_memberships() -> dict:
             if not device or not network:
                 logger.warning(
                     f"[Reconciliation] Membership {membership.id}: missing "
-                    f"{'device' if not device else 'network'} — hard-deleting record only."
+                    f"{'device' if not device else 'network'} — soft-deleting record only."
                 )
-                db.session.delete(membership)
+                membership.delete(soft=True)
                 db.session.commit()
                 results["deleted"] += 1
                 continue
@@ -304,20 +304,20 @@ def reconcile_deleted_memberships() -> dict:
             except Exception as zt_exc:
                 logger.warning(
                     f"[Reconciliation] ZT delete failed for node {node_id} "
-                    f"on {network_label}: {zt_exc} — proceeding with DB hard-delete."
+                    f"on {network_label}: {zt_exc} — proceeding with DB soft-delete."
                 )
 
-            db.session.delete(membership)
+            membership.delete(soft=True)
             db.session.commit()
             results["deleted"] += 1
             logger.debug(
-                f"[Reconciliation] Hard-deleted membership {membership.id} "
+                f"[Reconciliation] Soft-deleted membership {membership.id} "
                 f"(node={node_id}, network={network_label})."
             )
 
         except Exception as exc:
             logger.error(
-                f"[Reconciliation] Failed to hard-delete membership {membership.id}: {exc}",
+                f"[Reconciliation] Failed to soft-delete membership {membership.id}: {exc}",
                 exc_info=True,
             )
             results["errors"] += 1