Initial import: shopdb-flask multi-site asset platform

Flask + Vue rewrite of the classic-ASP shopdb, built as a plugin
framework so sister GE Aerospace sites can adopt it. Product version
0.7.0-pre-0.8.0, plugin contract 0.11.0, 966 backend tests.

Key entry points:
- docs/INSTALL-WINDOWS-IIS.md - tested Windows + IIS install runbook
  (own-site and subpath deployment methods)
- docs/PILOT-DEPLOY.md - production pilot: stand up + import + verify
- docs/IMPORT-API.md - schema-agnostic legacy data import contract
- scripts/site_imports/wjf/ - West Jefferson reference import loader
- docs/adr/ - twelve accepted architecture decision records

migrations/versions/7c02_application_isrequired.py

@@ -0,0 +1,29 @@
+"""Add applications.isrequired
+
+Backs the software-compliance report, which compares required applications
+against what is installed per PC. There was no such flag before, so the report
+errored.
+
+Revision ID: 7c02_app_isrequired
+Revises: 7c01_drop_legacy_machine
+Create Date: 2026-06-26
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '7c02_app_isrequired'
+down_revision = '7c01_drop_legacy_machine'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('applications', sa.Column(
+        'isrequired', sa.Boolean(), nullable=True, server_default=sa.false(),
+        comment='Required on all PCs (drives the software-compliance report)'))
+
+
+def downgrade():
+    op.drop_column('applications', 'isrequired')