ensure that sqlite databases enforce foreign key constraints (#432) #31

Job	Run time
ci / container	1m 13s
ci / docs	49s
ci / build-ui	1m 8s
ci / Verify dev env (ubuntu-latest)	14s
ci / Verify dev env (macos-latest)	25s
ci / Verify dev env (windows-latest)	45s
ci / Linting	34s
ci / tests on Python 3.11 / Gitlab 16.3.3-ce.0	7m 30s
ci / Build & verify package	23s
ci / Typing	50s
deploy-ghcr	1m 31s
deploy-pypi	47s
	16m 9s

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