Tune 5M signals, fix XAU regression, add signal dedup cooldown

EUR/USD 5M: raise min_entry_score 28→35, block hours 4/19/21
  → 83.4% WR, 145 trades, +9.68R, PF 1.42 (120-day)

XAU/USD 5M: fix B-grade exclusion regression in setup_grades,
  add breakeven trail (trigger 0.15R, buffer 0.05R)
  → 84.9% WR, 4810 trades, +164.54R, PF 1.23 (730-day)

EUR/USD M15: tighten defaults (SL 1.5x ATR, TP 1.0x, min_rr 0.5,
  block ranging+transitioning, BE trigger 0.2R)

Backtest: multiprocess fork parallelism, vectorized pre-filter,
  CUDA preload fix, per-pair BE trigger routing

Telegram bot: add signal deduplication — suppress repeated
  same-direction messages within 5-bar cooldown per pair+TF.
  Resend on direction flip, quality upgrade, or cooldown expiry.
  Manual scans always ungated.

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

pair_signals/eurusd.py

@@ -80,8 +80,9 @@ def make_config(
         config.eur_strategy.sl_atr_floor = 0.8
         config.eur_strategy.sl_atr_multiplier = 0.3
         config.eur_strategy.min_quality_grades = ["A+", "A", "B"]
-        config.eur_strategy.min_entry_score = 28.0
+        config.eur_strategy.min_entry_score = 35.0
         config.eur_strategy.min_entry_confidence = 50.0
+        config.backtest.blocked_hours_utc = [22, 23, 0, 1, 2, 3, 4, 19, 21]
     else:
         config.technical.regime_weights_override = EUR_REGIME_WEIGHTS
 

pair_signals/xauusd.py

@@ -20,4 +20,9 @@ def make_config(
     config.confirmation_timeframes = (
         confirmation_tfs or _CONFIRMATIONS.get(primary_tf, [Timeframe.M15, Timeframe.H4])
     )
+
+    if primary_tf == Timeframe.M5:
+        config.xau_strategy.be_trigger_r = 0.15
+        config.xau_strategy.be_buffer_r = 0.05
+
     return config