feat: initial trading platform implementation

Binance spot crypto trading platform with microservices architecture:
- shared: Pydantic models, Redis Streams broker, asyncpg DB layer
- data-collector: Binance WebSocket/REST market data collection
- strategy-engine: Plugin-based strategy execution (RSI, Grid)
- order-executor: Order execution with risk management
- portfolio-manager: Position tracking and PnL calculation
- backtester: Historical strategy testing with simulator
- cli: Click-based CLI for all operations
- Docker Compose orchestration with Redis and PostgreSQL
- 24 test files covering all modules

1 files changed, 24 insertions, 0 deletions

diff --git a/services/data-collector/src/data_collector/storage.py b/services/data-collector/src/data_collector/storage.py
new file mode 100644
index 0000000..1e40b82
--- /dev/null
+++ b/services/data-collector/src/data_collector/storage.py
@@ -0,0 +1,24 @@
+"""Candle storage: persists to DB and publishes to Redis."""
+from shared.events import CandleEvent
+from shared.models import Candle
+
+
+class CandleStorage:
+    """Stores candles in the database and publishes CandleEvents to Redis."""
+
+    def __init__(self, db, broker) -> None:
+        self._db = db
+        self._broker = broker
+
+    async def store(self, candle: Candle) -> None:
+        """Insert candle into DB and publish a CandleEvent to the Redis stream."""
+        await self._db.insert_candle(candle)
+
+        event = CandleEvent(data=candle)
+        stream = f"candles.{candle.symbol}"
+        await self._broker.publish(stream, event.to_dict())
+
+    async def store_batch(self, candles: list[Candle]) -> None:
+        """Store multiple candles one by one."""
+        for candle in candles:
+            await self.store(candle)