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Run lifecycle
Each workflow can move from input to draft output, review, approval, and export.
A finance engine needs a memory of inputs, assumptions, warnings, output state, and approval decisions for every run.
Each workflow can move from input to draft output, review, approval, and export.
Numbers should not appear alone; they need source context and reasoning trace.
The operator should see warnings and assumptions before accepting output.
Future exports can carry metadata proving how the result was produced.