722c7d1bef
The net and savings-rate derivation was byte-identical in DashboardController::calculateCashflowSummary and CashflowAnalyticsController::cashflowSummaryFromTransactions, so the two screens could silently diverge if one formula were ever edited. Extract a single CashflowSummaryService::summarize(income, expense) that owns the net and savings-rate math, and have both call sites consume it. Behaviour-preserving: each controller still computes income/expense its own way (single-currency SQL on the dashboard, multi-currency in-memory on the analytics endpoint) and only the shared derivation moves. |
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