Add M5 pullback entry archetype (XAU_PB): +140R combined on 12mo

Second entry pattern alongside the Keltner-breakout: enter on the
retrace to EMA21/KC-mid in an established trend (EMA >=3/4 aligned,
ADX>=20, retrace 0.8-6.0 ATR, resumption bar closed back in trend
direction, RSI in the pullback zone not the extended zone). Detector
lives in the aggregator so live and GPU-backtest paths share one
implementation. Own gates (composite floor 15, confirmation-TF
agreement, MTF opposition, vol regimes) with a diagnostic funnel.

PB stops anchor to the pullback swing (~$8 vs ~$25 breakout), so PB
trades get their own trail arm (0.8R vs 0.6R global) via per-trade
trail overrides in the backtester and strategy-aware Telegram alerts.

12mo M5 validation: PB alone +38.3R/254 trades, positive both halves
and all four full quarters; core breakout trades undisturbed
(+101.9R vs +105.0 baseline). Combined book: 549 trades (~10.6/wk),
+140.1R, PF 1.78, DD 11.3R vs 311 trades/+105.0R before.

signal_aggregator.py

@@ -47,6 +47,8 @@ class TradeSetup:
     risk_pips: float
     reward_pips: float
     pip_value: float
+    # Entry archetype ("GENERIC", "XAU_PB") — selects trail params.
+    strategy: str = "GENERIC"
 
 
 @dataclass
@@ -93,6 +95,10 @@ class SignalReport:
 class SignalAggregator:
     """Master aggregator for live signal analysis."""
 
+    # Diagnostic funnel for the M5 pullback route (shared across
+    # instances; read by backtest tooling, harmless in live use).
+    pb_funnel: Dict[str, int] = {}
+
     def __init__(self, config: PlatformConfig):
         self.config = config
         self.data_provider = ForexDataProvider(config)
@@ -377,6 +383,183 @@ class SignalAggregator:
                 report.trade_setup = None
                 return
 
+    # ── M5 pullback entry (XAU_PB) ──────────────────────────────────
+
+    def _detect_m5_pullback(
+        self, report: SignalReport, primary_df: pd.DataFrame
+    ) -> Optional[Dict]:
+        """Detect a pullback-continuation candidate on the primary TF.
+
+        Trend intact (EMA alignment >= 3/4, ADX floor) + price retraced
+        to EMA21/KC-mid within the last few bars + resumption bar closed
+        back in trend direction + RSI in the pullback zone (not the
+        extended zone breakout entries fire in).
+        """
+        cfg = self.config.xau_strategy
+        pa = report.primary_analysis
+        if pa is None or len(primary_df) < 60:
+            return None
+        levels = pa.key_levels
+        atr = levels.get("atr", 0.0)
+        ema_f = levels.get("ema_fast")
+        ema_m = levels.get("ema_medium")
+        ema_s = levels.get("ema_slow")
+        ema_t = levels.get("ema_trend")
+        if not atr or None in (ema_f, ema_m, ema_s, ema_t):
+            return None
+
+        adx_ind = pa.indicators.get("adx")
+        rsi_ind = pa.indicators.get("rsi")
+        if adx_ind is None or rsi_ind is None:
+            return None
+        if adx_ind.value < cfg.m5_pullback_adx_min:
+            return None
+
+        close = float(primary_df["Close"].iloc[-1])
+        open_ = float(primary_df["Open"].iloc[-1])
+        n_touch = cfg.m5_pullback_touch_bars
+        recent_low = float(primary_df["Low"].iloc[-n_touch:].min())
+        recent_high = float(primary_df["High"].iloc[-n_touch:].max())
+        # Pullback swing anchor for SL: extreme of the last 8 bars.
+        pb_low = float(primary_df["Low"].iloc[-8:].min())
+        pb_high = float(primary_df["High"].iloc[-8:].max())
+        kc_mid = levels.get("kc_mid", ema_m)
+        lo_atr, hi_atr = cfg.m5_pullback_retrace_atr
+        rsi = rsi_ind.value
+
+        # BUY: uptrend structure, dip to the band, bullish resumption.
+        up_align = sum([ema_f > ema_m, ema_m > ema_s, ema_s > ema_t,
+                        close > ema_t])
+        if up_align >= 3:
+            touched = recent_low <= max(ema_m, kc_mid)
+            swing_high = float(primary_df["High"].iloc[-40:].max())
+            depth = (swing_high - pb_low) / atr
+            resumed = close > open_ and close > ema_f
+            lo_z, hi_z = cfg.m5_pullback_rsi_buy
+            if (touched and resumed and lo_atr <= depth <= hi_atr
+                    and lo_z <= rsi <= hi_z):
+                return {"direction": "BUY", "anchor": pb_low,
+                        "retrace_atr": depth}
+
+        # SELL: mirrored.
+        dn_align = sum([ema_f < ema_m, ema_m < ema_s, ema_s < ema_t,
+                        close < ema_t])
+        if dn_align >= 3:
+            touched = recent_high >= min(ema_m, kc_mid)
+            swing_low = float(primary_df["Low"].iloc[-40:].min())
+            depth = (pb_high - swing_low) / atr
+            resumed = close < open_ and close < ema_f
+            lo_z, hi_z = cfg.m5_pullback_rsi_sell
+            if (touched and resumed and lo_atr <= depth <= hi_atr
+                    and lo_z <= rsi <= hi_z):
+                return {"direction": "SELL", "anchor": pb_high,
+                        "retrace_atr": depth}
+        return None
+
+    def _try_m5_pullback(
+        self, report: SignalReport, primary_df: pd.DataFrame, pip_value: float
+    ) -> None:
+        """Build an XAU_PB trade setup if a pullback candidate passes gates."""
+        cfg = self.config.xau_strategy
+        # Rejection funnel counters (class-level diagnostic, cheap).
+        funnel = SignalAggregator.pb_funnel
+
+        def _reject(reason: str) -> None:
+            funnel[reason] = funnel.get(reason, 0) + 1
+
+        pb = self._detect_m5_pullback(report, primary_df)
+        if pb is None:
+            return
+        _reject("detected")
+        direction = pb["direction"]
+        is_buy = direction == "BUY"
+
+        # Directional composite floor (lower than Gate 1 by design —
+        # price mid-pullback scores weaker on the momentum indicators).
+        signed = report.final_score if is_buy else -report.final_score
+        if signed < cfg.m5_pullback_min_score:
+            _reject("score")
+            return
+
+        # Confirmation TF must agree (reuse Gate-3 threshold).
+        min_conf = cfg.m5_min_confirmation_score
+        confirmed = False
+        primary_tf = self.config.primary_timeframe.value
+        for tf_val, tf_score in report.mtf_scores.items():
+            if tf_val == primary_tf:
+                continue
+            if (is_buy and tf_score >= min_conf) or \
+               (not is_buy and tf_score <= -min_conf):
+                confirmed = True
+                break
+        if not confirmed:
+            _reject("confirmation_tf")
+            return
+
+        # Never against multi-TF consensus (mirror of gate 6f).
+        sigs = list(report.mtf_signals.values())
+        bull_n = sum(1 for s in sigs if s in (SignalStrength.BUY, SignalStrength.STRONG_BUY))
+        bear_n = sum(1 for s in sigs if s in (SignalStrength.SELL, SignalStrength.STRONG_SELL))
+        thr = self.config.signals.mtf_agreement_threshold
+        if (is_buy and bear_n >= thr) or (not is_buy and bull_n >= thr):
+            _reject("mtf_opposition")
+            return
+
+        # Volatility gates match the breakout path.
+        if report.volatility_regime in cfg.m5_blocked_vol_regimes:
+            _reject("vol_regime")
+            return
+        if (not is_buy and report.volatility_regime
+                and report.volatility_regime not in cfg.sell_vol_regimes):
+            _reject("sell_vol")
+            return
+
+        atr = report.primary_analysis.key_levels.get("atr", 0.0)
+        entry = report.current_price
+        min_sl_price = self.config.signals.min_sl_pips * pip_value
+        if is_buy:
+            sl_dist = max(entry - (pb["anchor"] - 0.5 * atr), min_sl_price)
+            sl = entry - sl_dist
+            tp1 = entry + 1.5 * sl_dist
+            tp2 = entry + 2.5 * sl_dist
+        else:
+            sl_dist = max((pb["anchor"] + 0.5 * atr) - entry, min_sl_price)
+            sl = entry + sl_dist
+            tp1 = entry - 1.5 * sl_dist
+            tp2 = entry - 2.5 * sl_dist
+
+        # Spread gate — same economics as the breakout generators.
+        min_tp = (self.config.signals.round_trip_cost
+                  * self.config.signals.min_tp_cost_multiple)
+        if 1.5 * sl_dist < min_tp:
+            return
+
+        report.trade_setup = TradeSetup(
+            pair=report.symbol,
+            display_name=report.display_name,
+            direction=direction,
+            entry_price=entry,
+            stop_loss=sl,
+            take_profit_1=tp1,
+            take_profit_2=tp2,
+            risk_reward=1.5,
+            risk_pips=sl_dist / pip_value,
+            reward_pips=1.5 * sl_dist / pip_value,
+            pip_value=pip_value,
+            strategy="XAU_PB",
+        )
+        if report.signal_quality not in ("A+", "A", "B"):
+            report.signal_quality = "B"
+        report.final_signal = (SignalStrength.BUY if is_buy
+                               else SignalStrength.SELL)
+        report.action_recommendation = (
+            f"{direction} — pullback continuation entry"
+        )
+        marker = (f"XAU PULLBACK STRATEGY: retrace {pb['retrace_atr']:.1f} "
+                  f"ATR to EMA21/KC-mid, trend resumed")
+        target = report.bullish_reasons if is_buy else report.bearish_reasons
+        target.insert(0, marker)
+
     # ── Public: bar-replayable entry point ─────────────────────────
 
     def analyze_from_dataframes(
@@ -577,6 +760,16 @@ class SignalAggregator:
         # ── 8. Reasons ─────────────────────────────────────────────
         self._collect_reasons(report)
 
+        # ── 9. M5 pullback entry (XAU_PB) ──────────────────────────
+        # Second archetype: when no breakout setup fired, look for a
+        # trend-continuation pullback (retrace to EMA21/KC-mid). Runs
+        # after reasons so its marker lands at reasons[0] for tagging.
+        if (self.config.primary_timeframe == Timeframe.M5
+                and self.config.xau_strategy.m5_pullback_enabled
+                and report.trade_setup is None
+                and report.signal_quality != "F"):
+            self._try_m5_pullback(report, primary_df, pip_value)
+
         return report
 
     # ── Internals ──────────────────────────────────────────────────