test: parity and input oracles #323

Job	Run time
Verify prod requirements.txt is sufficient	9s
API integration tests + coverage (macos-latest)	19s
ruff + pip-audit (windows-latest)	1m 3s
Frontend unit tests (vitest) (ubuntu-latest)	26s
ruff + pip-audit (macos-latest)	36s
API integration tests + coverage (ubuntu-latest)	23s
pytest (ubuntu-latest)	50s
API integration tests + coverage (windows-latest)	1m 7s
ruff + pip-audit (ubuntu-latest)	20s
pytest (windows-latest)	1m 27s
Performance benchmarks (gated)	31s
Frontend unit tests (vitest) (windows-latest)	1m 10s
mypy	29s
Frontend unit tests (vitest) (macos-latest)	33s
pytest (macos-latest)	34s
	9m 57s

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