WKL — Prior Week Level Retest (Bull)

//@version=5
strategy("WKL — Prior Week Level Retest (Bull)", overlay=true, 
     default_qty_type=strategy.percent_of_equity, default_qty_value=2,
     initial_capital=100000, commission_type=strategy.commission.cash_per_order, commission_value=0.5)

// ═══════════════════════════════════════════════════════════════════
// LOCKED BASELINE — from Python deep sweep (Rob 91.7, PF 3.23)
// DO NOT TUNE THESE WITHOUT PYTHON VALIDATION
// ═══════════════════════════════════════════════════════════════════

// Parameters
tolerance   = input.float(5.0,  "Tolerance (pts)")
stopPts     = input.float(20.0, "Stop Loss (pts)")
targetR     = input.float(2.25, "Target R-multiple")
killHour    = input.int(20,     "Kill Hour (UTC)")
fridayCutoff= input.int(20,     "Friday Cutoff Hour (UTC)")

// ═══════════════════════════════════════════════════════════════════
// PRIOR WEEK LOW
// ═══════════════════════════════════════════════════════════════════
pwLow = request.security(syminfo.tickerid, "W", low[1], lookahead=barmerge.lookahead_on)

// ═══════════════════════════════════════════════════════════════════
// SESSION FILTER (07:00-17:00 UTC)
// ═══════════════════════════════════════════════════════════════════
utcHour = hour(time, "UTC")
inSession = utcHour >= 7 and utcHour < 17
isFridayLate = dayofweek == dayofweek.friday and utcHour >= fridayCutoff

// ═══════════════════════════════════════════════════════════════════
// ENTRY: Price touches prior week low and bounces (bull only)
// ═══════════════════════════════════════════════════════════════════
nearPWLow = math.abs(low - pwLow) <= tolerance
bounce    = close > pwLow + 1

longCondition = nearPWLow and bounce and inSession and not isFridayLate and strategy.position_size == 0

if longCondition
    entryPrice = close
    stopPrice  = entryPrice - stopPts
    targetPrice = entryPrice + (stopPts * targetR)
    
    strategy.entry("WKL_Long", strategy.long)
    strategy.exit("WKL_Exit", "WKL_Long", stop=stopPrice, limit=targetPrice)

// ═══════════════════════════════════════════════════════════════════
// TIME EXIT: Kill hour
// ═══════════════════════════════════════════════════════════════════
if strategy.position_size > 0 and utcHour >= killHour
    strategy.close("WKL_Long", comment="TimeExit")

// ═══════════════════════════════════════════════════════════════════
// VISUAL
// ═══════════════════════════════════════════════════════════════════
plot(pwLow, "Prior Week Low", color=color.new(color.blue, 30), linewidth=2, style=plot.style_stepline)
plotshape(longCondition, "Entry", shape.triangleup, location.belowbar, color.green, size=size.small)