refactor(ts): convert transactions/ + snowball/ dirs to TSX (B14)
transactions/: CategoryPicker (Category[], Node-cast for outside-click),
MatchBillDialog (BankTransaction/Bill, advisory_filter cast). snowball/:
PayoffChart (TrackPoint chart geometry, asDollars for formatUSD), PlanHistory
Panel + PlanStatusBanner (SnowballPlan/ActivePlan types with Dollars-branded debt
balances; asDollars at fmt boundaries, ?? guards for optional-money comparisons).
typecheck 0, lint 0 errors, build green.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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