Migrate PC form + collector off legacy Machine onto the asset/computer model

- PCForm saves/loads via computersApi (asset core + computer extension +
  primary IP in one call); PC Type now uses the dedicated computertypes table
  instead of MachineType, fixing the cross-table id mismatch.
- Collector (/api/collector/*) writes the Computer model: lookup by hostname
  or asset number, update loggedinuser/lastreporteddate/lastboottime + asset
  serial, installed apps via ComputerInstalledApp.
- Add computers.vendorid + modelnumberid (PCs carry make/model) and
  computerinstalledapps.installedversion; computer GET now includes
  communications. Wire COLLECTOR_API_KEY into config.

Retires the last write paths to the Machine model for PCs (ADR-001).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

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

@@ -0,0 +1,44 @@
+"""Add PC hardware make/model + installed-app version string
+
+Adds computers.vendorid + computers.modelnumberid (PCs carry vendor/model like
+equipment) and computerinstalledapps.installedversion (raw version string from
+automated collection, when there is no curated AppVersion). Supports moving the
+PC form and the collector off the legacy Machine model onto the asset/computer
+model (ADR-001).
+
+Revision ID: 0002_pc_hardware
+Revises: 0001_baseline_computers
+Create Date: 2026-06-26
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '0002_pc_hardware'
+down_revision = '0001_baseline_computers'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    with op.batch_alter_table('computers') as batch_op:
+        batch_op.add_column(sa.Column('vendorid', sa.Integer(), nullable=True))
+        batch_op.add_column(sa.Column('modelnumberid', sa.Integer(), nullable=True))
+        batch_op.create_foreign_key('fk_computers_vendor', 'vendors',
+                                    ['vendorid'], ['vendorid'])
+        batch_op.create_foreign_key('fk_computers_model', 'models',
+                                    ['modelnumberid'], ['modelnumberid'])
+    with op.batch_alter_table('computerinstalledapps') as batch_op:
+        batch_op.add_column(sa.Column('installedversion', sa.String(length=100),
+                                      nullable=True))
+
+
+def downgrade():
+    with op.batch_alter_table('computerinstalledapps') as batch_op:
+        batch_op.drop_column('installedversion')
+    with op.batch_alter_table('computers') as batch_op:
+        batch_op.drop_constraint('fk_computers_model', type_='foreignkey')
+        batch_op.drop_constraint('fk_computers_vendor', type_='foreignkey')
+        batch_op.drop_column('modelnumberid')
+        batch_op.drop_column('vendorid')