Initial commit: Shop Database Flask Application

Flask backend with Vue 3 frontend for shop floor machine management.
Includes database schema export for MySQL shopdb_flask database.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tests/__init__.py

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+"""Tests package."""

tests/conftest.py

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+"""Pytest configuration and fixtures."""
+
+import pytest
+from shopdb import create_app
+from shopdb.extensions import db as _db
+
+
+@pytest.fixture(scope='session')
+def app():
+    """Create application for testing."""
+    app = create_app('testing')
+    return app
+
+
+@pytest.fixture(scope='session')
+def db(app):
+    """Create database for testing."""
+    with app.app_context():
+        _db.create_all()
+        yield _db
+        _db.drop_all()
+
+
+@pytest.fixture(scope='function')
+def session(db):
+    """Create a new database session for a test."""
+    connection = db.engine.connect()
+    transaction = connection.begin()
+
+    options = dict(bind=connection, binds={})
+    session = db.create_scoped_session(options=options)
+
+    db.session = session
+
+    yield session
+
+    transaction.rollback()
+    connection.close()
+    session.remove()
+
+
+@pytest.fixture
+def client(app):
+    """Create test client."""
+    return app.test_client()
+
+
+@pytest.fixture
+def runner(app):
+    """Create CLI runner."""
+    return app.test_cli_runner()