refactor: migrate to US stocks with Alpaca API

- Replace Binance/ccxt with Alpaca REST client (paper + live)
- Add MOC (Market on Close) strategy for overnight gap trading
- Wire sentiment into strategy engine main loop
- Add EMA + bullish candle entry filters to Asian RSI
- Remove crypto-specific exchange factory
- Update config: Alpaca keys replace Binance keys
- 399 tests passing, lint clean

1 files changed, 2 insertions, 4 deletions

diff --git a/services/strategy-engine/src/strategy_engine/main.py b/services/strategy-engine/src/strategy_engine/main.py
index 8c77ada..d62f886 100644
--- a/services/strategy-engine/src/strategy_engine/main.py
+++ b/services/strategy-engine/src/strategy_engine/main.py
@@ -8,7 +8,7 @@ from shared.healthcheck import HealthCheckServer
 from shared.logging import setup_logging
 from shared.metrics import ServiceMetrics
 from shared.notifier import TelegramNotifier
-from shared.sentiment import SentimentProvider, SentimentData
+from shared.sentiment import SentimentProvider
 
 from strategy_engine.config import StrategyConfig
 from strategy_engine.engine import StrategyEngine
@@ -88,9 +88,7 @@ async def run() -> None:
     tasks = []
     try:
         # Sentiment updater
-        tasks.append(asyncio.create_task(
-            sentiment_loop(provider, strategies, log)
-        ))
+        tasks.append(asyncio.create_task(sentiment_loop(provider, strategies, log)))
         # Symbol processors
         for symbol in config.symbols:
             stream = f"candles.{symbol.replace('/', '_')}"