pine-script-strategy-alert-syntax-incompatibility

In Pine Script v6 strategy() mode, alertcondition() with {{plot(‘name’)}} placeholder syntax is invalid and silently fails. The correct pattern is inline alert() calls with direct string interpolation (e.g., alert(‘LONG signal on ’ + syminfo.ticker, alert.freq_once_per_bar)). This bug is non-obvious because alertcondition() compiles without error but generates no alerts at runtime in strategy scripts.