The dashboard risk is now mostly contradictory state combinations rather than styling. This extracts calendar action grouping into a pure utility and adds a lightweight TypeScript business-state runner so key decision states can be asserted without adding a test dependency.
Constraint: No new dependencies; use the existing TypeScript package for a local runner.
Rejected: Only rely on Next build/typecheck | it cannot catch product-language regressions such as fallback AI being labeled complete.
Confidence: high
Scope-risk: moderate
Reversibility: clean
Tested: npm run test:business
Tested: npm run build
Not-tested: Browser-rendered mobile fold interaction snapshots.
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