머니페니 b80feb7176 perf: add DB performance indexes and fix N+1 query in backtest listing
Add 10 indexes across prices, etf_prices, financials, valuations,
holdings, transactions, signals, portfolio_snapshots, and etfs tables.
Fix N+1 query in list_backtests by eager-loading backtest results
with joinedload.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-18 22:20:29 +09:00
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