PineForge — Keystone Limit Pullback

//@version=6
// SPDX-License-Identifier: Apache-2.0
// Copyright 2026 PineForge
// PineForge Corporate Strategy: Keystone Limit Pullback
// A live pullback limit follows a rising trend and is cancelled when the trend fails.
strategy("PineForge — Keystone Limit Pullback", overlay=true,
     initial_capital=100000,
     default_qty_type=strategy.percent_of_equity, default_qty_value=5,
     pyramiding=0, commission_type=strategy.commission.percent,
     commission_value=0.05, slippage=1,
     margin_long=100, margin_short=100,
     process_orders_on_close=false, calc_on_order_fills=false)

trendLength = input.int(48, "Trend EMA", minval=5, group="Signal")
atrLength = input.int(18, "ATR Length", minval=2, group="Signal")
pullbackAtr = input.float(0.55, "Pullback ATR", minval=0.1, step=0.05, group="Execution")
stopAtr = input.float(2.3, "Stop ATR", minval=0.5, step=0.1, group="Risk")
targetAtr = input.float(2.0, "Target ATR", minval=0.5, step=0.1, group="Risk")

trend = ta.ema(close, trendLength)
atrValue = ta.atr(atrLength)
risingTrend = trend > trend[1] and close > trend
workingLimit = trend - atrValue * pullbackAtr

if strategy.position_size == 0 and risingTrend
    strategy.entry("Keystone Pullback", strategy.long, limit=workingLimit)
else if strategy.position_size == 0
    strategy.cancel("Keystone Pullback")

if strategy.position_size > 0
    strategy.exit("Keystone Risk", from_entry="Keystone Pullback",
         stop=strategy.position_avg_price - atrValue * stopAtr,
         limit=strategy.position_avg_price + atrValue * targetAtr)

plot(trend, "Trend EMA", color=color.teal)
plot(workingLimit, "Working Limit", color=color.yellow)