fix: send zigbee/zwave coordinator to pending inventory, not auto-canvas

The coordinator was special-cased in both mesh imports to auto-create a
canvas Node, so it never appeared in the pending inventory and users could
not approve/hide/type it like every other device.

Remove the auto-placement: the coordinator now flows through the shared
pending path (upsert into pending_devices with suggested_type
zigbee_coordinator / zwave_coordinator). An already-approved coordinator
Node still gets its properties refreshed on re-import via the shared
approved-node path. The response's coordinator/coordinator_already_existed
fields are retained (now always unset) for backward-compatible shape; the
frontend already ignored them.

Tests updated: coordinator lands in pending (counts include it), no Node
auto-created, pending metadata carried, approved coordinator refresh + no
pending re-list.

ha-relevant: yes

backend/tests/test_zwave_router.py

@@ -297,18 +297,31 @@ async def test_import_pending_requires_auth(client: AsyncClient) -> None:
 
 
 @pytest.mark.asyncio
-async def test_persist_creates_coordinator_and_pending(db_session) -> None:
+async def test_persist_coordinator_goes_to_pending(db_session) -> None:
+    """Coordinator is no longer auto-placed — it lands in pending like the rest."""
+    from sqlalchemy import select
+
     from app.api.routes.zwave import _persist_pending_import
+    from app.db.models import Node, PendingDevice
 
     result = await _persist_pending_import(db_session, _PENDING_NODES, _PENDING_EDGES)
     assert result.device_count == 3
-    assert result.pending_created == 2
+    assert result.pending_created == 3          # coordinator included now
     assert result.pending_updated == 0
-    assert result.coordinator is not None
-    assert result.coordinator.ieee_address == "zwave-0xh-1"
+    assert result.coordinator is None           # not auto-placed
     assert result.coordinator_already_existed is False
     assert result.links_recorded == 2
 
+    nodes = (await db_session.execute(select(Node))).scalars().all()
+    assert nodes == []
+    coord = (
+        await db_session.execute(
+            select(PendingDevice).where(PendingDevice.ieee_address == "zwave-0xh-1")
+        )
+    ).scalar_one()
+    assert coord.status == "pending"
+    assert coord.suggested_type == "zwave_coordinator"
+
 
 @pytest.mark.asyncio
 async def test_persist_idempotent_updates_existing(db_session) -> None:
@@ -319,8 +332,8 @@ async def test_persist_idempotent_updates_existing(db_session) -> None:
     bumped[1]["model"] = "ZW111"
     result = await _persist_pending_import(db_session, bumped, _PENDING_EDGES)
     assert result.pending_created == 0
-    assert result.pending_updated == 2
-    assert result.coordinator_already_existed is True
+    assert result.pending_updated == 3          # coordinator upserts too
+    assert result.coordinator_already_existed is False
 
 
 @pytest.mark.asyncio
@@ -339,22 +352,25 @@ async def test_persist_replaces_links(db_session) -> None:
 
 
 @pytest.mark.asyncio
-async def test_persist_sets_coordinator_properties(db_session) -> None:
+async def test_persist_sets_coordinator_pending_fields(db_session) -> None:
+    """Coordinator lands in pending carrying its vendor/model metadata."""
     from sqlalchemy import select
 
     from app.api.routes.zwave import _persist_pending_import
-    from app.db.models import Node
+    from app.db.models import PendingDevice
 
     nodes = [dict(n) for n in _PENDING_NODES]
     nodes[0]["vendor"] = "Aeotec"
     nodes[0]["model"] = "ZW090"
     await _persist_pending_import(db_session, nodes, _PENDING_EDGES)
     coord = (
-        await db_session.execute(select(Node).where(Node.ieee_address == "zwave-0xh-1"))
+        await db_session.execute(
+            select(PendingDevice).where(PendingDevice.ieee_address == "zwave-0xh-1")
+        )
     ).scalar_one()
-    keys = {p["key"]: p["value"] for p in coord.properties}
-    assert keys == {"Z-Wave ID": "zwave-0xh-1", "Vendor": "Aeotec", "Model": "ZW090"}
-    assert all(p["visible"] is False for p in coord.properties)
+    assert coord.vendor == "Aeotec"
+    assert coord.model == "ZW090"
+    assert coord.suggested_type == "zwave_coordinator"
 
 
 @pytest.mark.asyncio
@@ -416,7 +432,8 @@ async def test_persist_revives_orphaned_approved_device(db_session) -> None:
         )
     ).scalar_one()
     assert revived.status == "pending"
-    assert result.pending_created == 1
+    # Coordinator + end device are brand new → created; router was revived.
+    assert result.pending_created == 2
     assert result.pending_updated == 1