Launcher running every symbol through the backtest pipeline (Backtest.background) over a historical frame window.
backtest: true
Discriminator for type-safe union: run the backtest pipeline
frameName: string
Timeframe bounding the run. Optional: defaults to the single registered frame; ambiguous (2+ registered) requires it
cache: boolean
Warm the 1m candle cache over the frame window before launching. Default: true