feat: elaborate TODOs (#227) #773

Job	Run time
test-server	21s
test-fake-database	22s
framework (random, no-auth)	2m 45s
core (random, all-features)	38m 17s
framework (controlled, no-auth)	4m 12s
core (random, single-seller)	34m 27s
core (random, no-payment-reconciliation)	34m 2s
core (random, no-auth)	36m 30s
core (random, no-tax-calculation)	33m 42s
core (random, prepayment-always-required)	32m 45s
core (random, facilityuse-has-slots)	38m 20s
core (controlled, all-features)	36m 11s
core (controlled, single-seller)	38m 9s
core (controlled, no-payment-reconciliation)	36m 6s
core (controlled, no-auth)	36m 12s
core (controlled, no-tax-calculation)	35m 8s
core (controlled, prepayment-always-required)	33m 58s
core (controlled, facilityuse-has-slots)	35m 52s
deploy-reference-implementation	55s
publish-fake-database	0s
publish-server	0s
	8h 28m 14s

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