Income trades created via Trade::CreateForm#create_income_trade set
price: 0 on the Trade record. This zero price was ingested by
PortfolioCache#load_prices as a valid price source, causing
ForwardCalculator#build_holdings to compute holding amount = qty * 0 = $0,
and overriding the security's market price on that date.
Additionally, Balance::BaseCalculator#flows_for_date misclassified income
trades (qty=0) as sells, producing spurious non_cash_outflows.
Fixes:
- PortfolioCache#load_prices: filter out zero-price trades from trade
price sources using .select { |t| t.entryable.price&.positive? }
- Balance::BaseCalculator#flows_for_date: separate income trades from
regular trades using their qty (income trades have qty=0), so they
contribute only to cash flows, not non-cash flows
- Balance::SyncCache#converted_entries: preserve the entryable association
target on duped entries so that e.entryable.qty access doesn't N+1
Fixes#2672
StalkerSea