Add vitest coverage for router, pages, and tool renderers (#86) #173

Job	Run time
ruff + pip-audit (ubuntu-latest)	20s
mypy	24s
Frontend unit tests (vitest) (ubuntu-latest)	21s
pytest (windows-latest)	1m 16s
Frontend unit tests (vitest) (windows-latest)	50s
Frontend unit tests (vitest) (macos-latest)	24s
Verify prod requirements.txt is sufficient	8s
API integration tests + coverage (windows-latest)	59s
API integration tests + coverage (macos-latest)	14s
ruff + pip-audit (macos-latest)	15s
pytest (macos-latest)	32s
API integration tests + coverage (ubuntu-latest)	18s
ruff + pip-audit (windows-latest)	1m 3s
pytest (ubuntu-latest)	46s
Performance benchmarks (informational)	24s
	8m 14s

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