Fix M5 signal quality: ATR ordering bug, noise gates, blocked-hour leak (+41R)

ATR was computed after EMAs so ribbon compression detection was dead code
on all timeframes — moved ATR first. Extended M5 swing S/R lookback from
50 to 120 bars. Added four M5-specific filters: min score, MTF agreement,
confirmation TF conviction, and SELL quality cap (A-grade M5 shorts enter
at dip extremes and lose). Fixed backtester blocked-hour check to use bar
close time matching the live bot. Added trade geometry config (spread gate,
SL floor, TP floor RR) and primary_tf mismatch guard in backtester.

Backtest: 1133 trades/+11.5R → 419 trades/+41.0R, PF 1.03→1.37, DD 21→11R.
Train/val split positive in both halves (+19.8R/+21.3R).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

engine.py

@@ -85,11 +85,12 @@ class TechnicalEngine:
         # ── Compute all indicators ─────────────────────────────────
         disabled = set(self.config.disabled_indicators or [])
 
+        # ATR first: other indicators (EMA ribbon, candlestick) use it
+        if "atr"         not in disabled: self._compute_atr(df, result)
         if "ema_trend"   not in disabled: self._compute_ema_signals(df, result)
         if "rsi"         not in disabled: self._compute_rsi(df, result)
         if "bollinger"   not in disabled: self._compute_bollinger(df, result)
         if "adx"         not in disabled: self._compute_adx(df, result)
-        if "atr"         not in disabled: self._compute_atr(df, result)
 
         self._compute_macd(df, result)
 
@@ -817,7 +818,10 @@ class TechnicalEngine:
 
     def _compute_structure_sr(self, df: pd.DataFrame, result: TechnicalAnalysis):
         """Detect swing high/low structure levels for S/R and trade setup."""
-        lookback = min(self.config.swing_sr_lookback, len(df) - 1)
+        base_lookback = self.config.swing_sr_lookback
+        if result.timeframe in ("1min", "5min"):
+            base_lookback = max(base_lookback, 120)
+        lookback = min(base_lookback, len(df) - 1)
         if lookback < 10:
             return