Temperature formatting was embedded in the large dashboard utility module, so small scan-terminal views had to import the heavy utility surface for simple labels. This moves the pure temperature helpers into a lightweight module while keeping dashboard-utils re-exports for compatibility.
Constraint: Preserve existing temperature text output and all dashboard-utils import compatibility.
Rejected: Split chart, pace, and model helpers in the same pass | those helpers have wider coupling and should move one boundary at a time.
Confidence: high
Scope-risk: narrow
Reversibility: clean
Tested: TypeScript diagnostics for temperature-utils, dashboard-utils, and OpportunityTable
Tested: npm run build
Not-tested: Bundle analyzer size comparison.
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