feat: StageResult contract + emission at local_triage boundary (#1338) #650

Job	Run time
Detect affected areas	9s
OSV scan / Scan lockfiles	37s
Deny unrelated histories / check-common-ancestor	25s
Check contributors / check-attribution	27s
Supply-chain scan / Scan PR for critical supply chain risks	25s
Python lints / ruff enforcement (blocking)	14s
Check uv.lock / uv lock --check	16s
Python lints / Windows footguns (blocking)	17s
Python tests / e2e	46s
Python lints / ruff + ty diff	58s
Python tests / Generate slices	14s
JS & TS checks	-1s
Docs Site	-1s
Lint Docker scripts	-1s
Supply-chain scan / MCP catalog security review	-1s
package-lock.json diff	-1s
Supply-chain scan / Check PyPI dependency upper bounds	-1s
Python lints / CI-sensitive file review	-1s
Python tests / Run tests slice 6/8	2m 30s
Python tests / Run tests slice 2/8	2m 44s
Python tests / Run tests slice 8/8	3m 25s
Python tests / Run tests slice 7/8	2m 58s
Python tests / Run tests slice 1/8	2m 31s
Python tests / Run tests slice 5/8	2m 53s
Python tests / Run tests slice 4/8	4m 3s
Python tests / Run tests slice 3/8	2m 35s
Python tests / save-durations	-1s
All required checks pass	2s
CI timing report	18s
	28m 39s

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