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

requirements.txt

@@ -0,0 +1,121 @@
+# This file was autogenerated by uv via the following command:
+#    uv pip compile requirements.in -o requirements.txt
+alembic==1.18.4
+    # via flask-migrate
+blinker==1.9.0
+    # via flask
+cachelib==0.13.0
+    # via flask-caching
+certifi==2026.4.22
+    # via requests
+charset-normalizer==3.4.7
+    # via requests
+click==8.3.3
+    # via
+    #   -r requirements.in
+    #   flask
+coverage==7.13.5
+    # via pytest-cov
+dnspython==2.8.0
+    # via email-validator
+email-validator==2.3.0
+    # via -r requirements.in
+flask==3.1.3
+    # via
+    #   -r requirements.in
+    #   flask-caching
+    #   flask-cors
+    #   flask-jwt-extended
+    #   flask-marshmallow
+    #   flask-migrate
+    #   flask-sqlalchemy
+    #   pytest-flask
+flask-caching==2.4.0
+    # via -r requirements.in
+flask-cors==6.0.2
+    # via -r requirements.in
+flask-jwt-extended==4.7.3
+    # via -r requirements.in
+flask-marshmallow==1.5.0
+    # via -r requirements.in
+flask-migrate==4.1.0
+    # via -r requirements.in
+flask-sqlalchemy==3.1.1
+    # via
+    #   -r requirements.in
+    #   flask-migrate
+greenlet==3.5.0
+    # via sqlalchemy
+idna==3.13
+    # via
+    #   email-validator
+    #   requests
+iniconfig==2.3.0
+    # via pytest
+itsdangerous==2.2.0
+    # via flask
+jinja2==3.1.6
+    # via flask
+mako==1.3.12
+    # via alembic
+markupsafe==3.0.3
+    # via
+    #   flask
+    #   jinja2
+    #   mako
+    #   werkzeug
+marshmallow==4.3.0
+    # via
+    #   flask-marshmallow
+    #   marshmallow-sqlalchemy
+marshmallow-sqlalchemy==1.5.0
+    # via -r requirements.in
+mysql-connector-python==9.7.0
+    # via -r requirements.in
+packaging==26.2
+    # via pytest
+pluggy==1.6.0
+    # via
+    #   pytest
+    #   pytest-cov
+pygments==2.20.0
+    # via pytest
+pyjwt==2.12.1
+    # via flask-jwt-extended
+pymysql==1.1.3
+    # via -r requirements.in
+pytest==9.0.3
+    # via
+    #   -r requirements.in
+    #   pytest-cov
+    #   pytest-flask
+pytest-cov==7.1.0
+    # via -r requirements.in
+pytest-flask==1.3.0
+    # via -r requirements.in
+python-dotenv==1.2.2
+    # via -r requirements.in
+requests==2.33.1
+    # via -r requirements.in
+sqlalchemy==2.0.49
+    # via
+    #   alembic
+    #   flask-sqlalchemy
+    #   marshmallow-sqlalchemy
+tabulate==0.10.0
+    # via -r requirements.in
+typing-extensions==4.15.0
+    # via
+    #   alembic
+    #   sqlalchemy
+urllib3==2.7.0
+    # via requests
+werkzeug==3.1.8
+    # via
+    #   -r requirements.in
+    #   flask
+    #   flask-cors
+    #   flask-jwt-extended
+    #   pytest-flask
+waitress>=3.0
+tzdata