feat(strategy): Phase 2 complete — strategy infrastructure upgrade

- Technical indicators library (ATR, ADX, RSI, MACD, Bollinger, Stochastic, OBV)
- Signal model: conviction score, stop_loss, take_profit fields
- BaseStrategy: ADX regime filter, volume confirmation, ATR-based stops
- All 8 strategies upgraded with filters, conviction scoring, ATR stops
- Combined strategy uses conviction-weighted scoring
- 334 tests passing

1 files changed, 13 insertions, 4 deletions

diff --git a/services/strategy-engine/strategies/indicators/__init__.py b/services/strategy-engine/strategies/indicators/__init__.py
index 1a54d59..3c713e6 100644
--- a/services/strategy-engine/strategies/indicators/__init__.py
+++ b/services/strategy-engine/strategies/indicators/__init__.py
@@ -1,12 +1,21 @@
 """Reusable technical indicator functions."""
+
 from strategies.indicators.trend import ema, sma, macd, adx
 from strategies.indicators.volatility import atr, bollinger_bands, keltner_channels
 from strategies.indicators.momentum import rsi, stochastic
 from strategies.indicators.volume import volume_sma, volume_ratio, obv
 
 __all__ = [
-    "ema", "sma", "macd", "adx",
-    "atr", "bollinger_bands", "keltner_channels",
-    "rsi", "stochastic",
-    "volume_sma", "volume_ratio", "obv",
+    "ema",
+    "sma",
+    "macd",
+    "adx",
+    "atr",
+    "bollinger_bands",
+    "keltner_channels",
+    "rsi",
+    "stochastic",
+    "volume_sma",
+    "volume_ratio",
+    "obv",
 ]