feat(strategy): Phase 3 complete — individual strategy upgrades

- RSI: bullish/bearish divergence detection (conviction 0.9)
- MACD: signal-line crossover + zero-line distance conviction
- Grid: trend break exit + out-of-range guard
- Bollinger: squeeze detection + breakout signals + %B conviction
- EMA Crossover: pullback entry mode (wait for EMA retest)
- VWAP: daily reset + 1σ/2σ deviation bands + band-based conviction
- Volume Profile: HVN/LVN node detection for stronger signals
- Combined: adaptive weighting based on sub-strategy win rates
- 363 tests passing

1 files changed, 2 insertions, 2 deletions

diff --git a/services/strategy-engine/strategies/macd_strategy.py b/services/strategy-engine/strategies/macd_strategy.py
index 4ce0737..356a42b 100644
--- a/services/strategy-engine/strategies/macd_strategy.py
+++ b/services/strategy-engine/strategies/macd_strategy.py
@@ -102,7 +102,7 @@ class MacdStrategy(BaseStrategy):
                     price=candle.close,
                     quantity=self._quantity,
                     conviction=conv,
-                    reason=f"MACD signal-line bullish crossover",
+                    reason="MACD signal-line bullish crossover",
                 )
             # Bearish: MACD crosses below signal
             elif self._prev_macd >= self._prev_signal and macd_val < signal_val:
@@ -115,7 +115,7 @@ class MacdStrategy(BaseStrategy):
                     price=candle.close,
                     quantity=self._quantity,
                     conviction=conv,
-                    reason=f"MACD signal-line bearish crossover",
+                    reason="MACD signal-line bearish crossover",
                 )
 
         # Histogram crossover detection (existing logic, as secondary signal)