refactor: priority-based tool result dispatch selection #282

Job	Run time
Verify prod requirements.txt is sufficient	12s
API integration tests + coverage (macos-latest)	21s
API integration tests + coverage (windows-latest)	49s
mypy	21s
pytest (ubuntu-latest)	45s
Frontend unit tests (vitest) (windows-latest)	1m 9s
ruff + pip-audit (macos-latest)	30s
pytest (windows-latest)	1m 23s
API integration tests + coverage (ubuntu-latest)	25s
pytest (macos-latest)	33s
ruff + pip-audit (windows-latest)	56s
ruff + pip-audit (ubuntu-latest)	20s
Frontend unit tests (vitest) (ubuntu-latest)	30s
Frontend unit tests (vitest) (macos-latest)	40s
Performance benchmarks (gated)	29s
	9m 23s

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