Add XAU/USD oversold-bounce strategy (79.7% WR, PF 2.06)

BUY-only strategy for gold: enters when M15 RSI drops below oversold
threshold while price remains above EMA200 on all three timeframes
(M15, H1, H4). Uses ATR-based TP/SL (0.7x/2.0x) sized from M15 ATR.
Isolated to XAU/USD only — other pairs completely unaffected.

signal_aggregator.py

@@ -331,8 +331,25 @@ class SignalAggregator:
             except Exception:
                 pass
 
+        # ── 6c. XAU/USD oversold bounce strategy ─────────────────
+        if report.display_name == "XAU/USD" and self.config.xau_strategy.enabled:
+            if self._check_xau_oversold_bounce(report, dfs):
+                report.final_signal = SignalStrength.STRONG_BUY
+                report.final_score = 50.0
+                report.final_confidence = 85.0
+                report.signal_quality = "A+"
+                report.action_recommendation = (
+                    "STRONG BUY — XAU oversold bounce "
+                    "(RSI<30 + M15/H1/H4 all above EMA200)"
+                )
+                report.bullish_reasons.insert(
+                    0,
+                    "XAU STRATEGY: M15 RSI oversold + triple-TF bullish trend confirmation",
+                )
+                report.trade_setup = self._generate_xau_trade_setup(report, dfs)
+
         # ── 7. Trade setup for actionable signals ──────────────────
-        if report.signal_quality in ("A+", "A", "B", "C"):
+        if report.trade_setup is None and report.signal_quality in ("A+", "A", "B", "C"):
             is_sell_direction = (
                 report.final_signal in (SignalStrength.SELL, SignalStrength.STRONG_SELL)
                 or (report.final_signal == SignalStrength.NEUTRAL and report.final_score < 0)
@@ -359,6 +376,110 @@ class SignalAggregator:
         0/4 trades won even under best conditions (trending_down + MTF + ADX>=25 + RSI<=50)."""
         return False
 
+    def _check_xau_oversold_bounce(
+        self, report: SignalReport, dfs: Dict[Timeframe, pd.DataFrame]
+    ) -> bool:
+        """Return True when XAU/USD oversold-bounce conditions are met.
+
+        Conditions (all must be true):
+        1. M15 RSI(14) < 30
+        2. M15 price > M15 EMA(200)
+        3. H1 price > H1 EMA(200)
+        4. H4 price > H4 EMA(200)
+        5. Current bar hour not in blocked list
+        """
+        cfg = self.config.xau_strategy
+
+        try:
+            bar_hour = pd.Timestamp(report.timestamp).hour
+            if bar_hour in cfg.blocked_hours_utc:
+                return False
+        except Exception:
+            return False
+
+        m15_analysis = None
+        h4_analysis = None
+        for ca in report.confirmation_analyses:
+            if ca.timeframe == Timeframe.M15.value:
+                m15_analysis = ca
+            elif ca.timeframe == Timeframe.H4.value:
+                h4_analysis = ca
+
+        h1_analysis = report.primary_analysis
+
+        if not m15_analysis or not h1_analysis or not h4_analysis:
+            return False
+
+        m15_rsi = m15_analysis.indicators.get("rsi")
+        if not m15_rsi or m15_rsi.value >= cfg.rsi_entry_threshold:
+            return False
+
+        m15_ema200 = m15_analysis.key_levels.get("ema_trend")
+        m15_df = dfs.get(Timeframe.M15)
+        if m15_df is None or m15_ema200 is None:
+            return False
+        m15_price = float(m15_df["Close"].iloc[-1])
+        if m15_price <= m15_ema200:
+            return False
+
+        h1_ema200 = h1_analysis.key_levels.get("ema_trend")
+        if h1_ema200 is None or report.current_price <= h1_ema200:
+            return False
+
+        h4_ema200 = h4_analysis.key_levels.get("ema_trend")
+        h4_df = dfs.get(Timeframe.H4)
+        if h4_df is None or h4_ema200 is None:
+            return False
+        h4_price = float(h4_df["Close"].iloc[-1])
+        if h4_price <= h4_ema200:
+            return False
+
+        return True
+
+    def _generate_xau_trade_setup(
+        self, report: SignalReport, dfs: Dict[Timeframe, pd.DataFrame]
+    ) -> Optional[TradeSetup]:
+        """Generate XAU-specific trade setup with backtested TP/SL."""
+        cfg = self.config.xau_strategy
+
+        m15_analysis = None
+        for ca in report.confirmation_analyses:
+            if ca.timeframe == Timeframe.M15.value:
+                m15_analysis = ca
+                break
+
+        if not m15_analysis:
+            return None
+
+        atr = m15_analysis.key_levels.get("atr", 0)
+        if atr <= 0:
+            return None
+
+        price = report.current_price
+        pip_value = 0.10
+
+        tp1 = price + cfg.tp_atr_multiplier * atr
+        sl = price - cfg.sl_atr_multiplier * atr
+        tp2 = price + cfg.tp_atr_multiplier * 2.0 * atr
+
+        sl_distance = price - sl
+        tp_distance = tp1 - price
+        rr = tp_distance / sl_distance if sl_distance > 0 else 0
+
+        return TradeSetup(
+            pair=report.symbol,
+            display_name=report.display_name,
+            direction="BUY",
+            entry_price=price,
+            stop_loss=round(sl, 2),
+            take_profit_1=round(tp1, 2),
+            take_profit_2=round(tp2, 2),
+            risk_reward=round(rr, 2),
+            risk_pips=round(sl_distance / pip_value, 1),
+            reward_pips=round(tp_distance / pip_value, 1),
+            pip_value=pip_value,
+        )
+
     def _check_mtf_agreement(self, report: SignalReport) -> bool:
         signals = list(report.mtf_signals.values())
         if len(signals) < 2: