First .tsx conversions — the tracker leaf components, where the branded Dollars
now flows into the UI: StatusBadge (status: TrackerStatus), FilterChip,
PaymentProgress (paymentSummary's Dollars → fmt type-checks), SummaryCards
(SummaryCard value: Dollars, CardDef/CardType/TrendInfo typed). Props interfaces
added; no behavior change. Confirms the .tsx pattern: a typed parent importing
untyped .jsx children is fine (children accept any props — no forced cascade).
typecheck 0, lint 0 errors, build green, 48 client tests, 17/17 e2e probe (home
page renders).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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