Zigbee and Z-Wave imports looked up canvas nodes by ieee_address with
scalar_one_or_none(), assuming one node per IEEE globally. A device placed
on two designs (one Node per canvas — a supported feature) made re-import
crash with MultipleResultsFound.
- Both mesh imports now refresh properties on every matching node instead
of a single row (loop over .scalars().all()).
- approve_device guards against a true duplicate: same IEEE already on the
SAME design reuses that node instead of inserting a second one.
- New node_dedupe service: loss-free repair keyed on (ieee, design_id).
Collapses only genuine same-canvas duplicates (merges properties/services/
missing fields, re-points edges + parent_id, drops self-loops/parallel
edges). Cross-design placements preserved. Runs at start of both imports
and bulk-approve. No-op on healthy DBs.
- IP correlation path already handled multiple nodes; left unchanged.
Tests: dedupe unit tests (collapse, cross-design preservation, edge/parent
re-point, idempotent), zigbee + zwave multi-canvas regression, approve
no-dupe guard.
ha-relevant: yes
Pouzor