254e0e729f
Full-M7 scope: operator Alarm Summary (per-instance live snapshots), MxGateway secured writes (Operator+Verifier roles + PendingSecuredWrite + central relay), OPC UA BrowseNext paging + bounded recursive search, type-info surfacing + attribute-override CSV import, Verify-endpoint button + site-local cert trust (broadcast to both nodes). Builds on the merged opcua-tag-browser + mxgw-supervisory-write foundations already in main.