add Entra device identity to computers and Azure/Thor import sources

PC records now carry Entra/Azure device identity so imported machines keep a durable link back to their directory object instead of matching on hostname alone. Adds azuredeviceid, azureobjectid, and azuredevicecategory to the Computer model with matching migrations, surfaces them read-only in PCDetail as an Entra Device Info card, and lets PCForm edit the device id directly. The computers plugin registers a machineassetnumber import hook that reconciles PC-to-machine links during bulk import and warns on unresolved or conflicting relationships.

Adds importsources adapters that normalize Azure device-group and Thor PC inventory exports into canonical ShopDB CSVs via hostname alignment, exposes register_import_hook and RowWarning on the shopdb.api contract surface (contract 0.21.0), and refreshes the Import Site Assets page with clearer source instructions. Includes reconcile_locations maintenance script and coverage for the new import paths.

plugins/computers/migrations/versions/0002_computer_azuredeviceid.py

@@ -0,0 +1,40 @@
+"""Add azuredeviceid to computers (Entra/Azure device-group imports).
+
+The core chain created computers WITHOUT an azuredeviceid column. This plugin
+revision adds it so BOTH fresh installs (core chain builds the table, then this
+adds the column) and existing installs get it. Guarded/idempotent: skips when
+the table is absent (plugin disabled) or the column already exists (e.g. a test
+DB built by db.create_all() from the model).
+
+Revision ID: computers0002azureid
+Revises: computers0001anchor
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = 'computers0002azureid'
+down_revision = 'computers0001anchor'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    bind = op.get_bind()
+    insp = sa.inspect(bind)
+    if 'computers' not in insp.get_table_names():
+        return
+    cols = {c['name'] for c in insp.get_columns('computers')}
+    if 'azuredeviceid' not in cols:
+        op.add_column('computers',
+                      sa.Column('azuredeviceid', sa.String(length=64), nullable=True))
+
+
+def downgrade():
+    bind = op.get_bind()
+    insp = sa.inspect(bind)
+    if 'computers' not in insp.get_table_names():
+        return
+    cols = {c['name'] for c in insp.get_columns('computers')}
+    if 'azuredeviceid' in cols:
+        op.drop_column('computers', 'azuredeviceid')

plugins/computers/migrations/versions/0003_computer_azure_fields.py

@@ -0,0 +1,45 @@
+"""Add azureobjectid and azuredevicecategory to computers.
+
+The Azure device-group import now also records the Entra directory object id
+(the CSV 'id' column) and an operator-supplied device category (the group
+membership label, e.g. SFLD_DYN_Device_Group_...). This revision adds both
+columns. Guarded/idempotent: skips when the table is absent (plugin disabled)
+or a column already exists (e.g. a test DB built by db.create_all()).
+
+Revision ID: computers0003azurefields
+Revises: computers0002azureid
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = 'computers0003azurefields'
+down_revision = 'computers0002azureid'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    bind = op.get_bind()
+    insp = sa.inspect(bind)
+    if 'computers' not in insp.get_table_names():
+        return
+    cols = {c['name'] for c in insp.get_columns('computers')}
+    if 'azureobjectid' not in cols:
+        op.add_column('computers',
+                      sa.Column('azureobjectid', sa.String(length=64), nullable=True))
+    if 'azuredevicecategory' not in cols:
+        op.add_column('computers',
+                      sa.Column('azuredevicecategory', sa.String(length=255), nullable=True))
+
+
+def downgrade():
+    bind = op.get_bind()
+    insp = sa.inspect(bind)
+    if 'computers' not in insp.get_table_names():
+        return
+    cols = {c['name'] for c in insp.get_columns('computers')}
+    if 'azuredevicecategory' in cols:
+        op.drop_column('computers', 'azuredevicecategory')
+    if 'azureobjectid' in cols:
+        op.drop_column('computers', 'azureobjectid')