Fix test_alembic exception handler with diagnostic message

[Copilot]

Issue

test_alembic() in backend/tests/samples/test_db.py had a bare assert False in the exception handler, providing no diagnostic information on failure.

Changes

Added exception details to the assertion message:

def test_alembic():
    """Test if the alembic has properly initialized tables"""
    db = next(get_db())
    try:
        db.query(models.Algoritme).all()
    except Exception as e:
-       assert False
+       assert False, f"Failed to query Algoritme model. Alembic may not have initialized tables properly: {e}"

The test now reports the underlying exception when database initialization fails.

Original prompt

Fix

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