275d9231a6
Root cause: switchTab() didn't show the historical panel (pnl-historical). Added panel visibility toggle and tab highlight for 'historical' tab. Also fixed broken JS quote escaping in loadHistBT function — ''+s+'' was missing backslash-escaped quotes, causing "Unexpected string" syntax error that prevented the entire script from executing. Historical tab now shows 7 real-data backtest cards from Hyperliquid mainnet candles.