major update

app/services/sentiment_service.py

@@ -6,6 +6,7 @@ using a time-decay weighted average over a configurable lookback window.
 
 from __future__ import annotations
 
+import json
 import math
 from datetime import datetime, timedelta, timezone
 
@@ -34,6 +35,8 @@ async def store_sentiment(
     confidence: int,
     source: str,
     timestamp: datetime | None = None,
+    reasoning: str = "",
+    citations: list[dict] | None = None,
 ) -> SentimentScore:
     """Store a new sentiment record for a ticker."""
     ticker = await _get_ticker(db, symbol)
@@ -41,12 +44,17 @@ async def store_sentiment(
     if timestamp is None:
         timestamp = datetime.now(timezone.utc)
 
+    if citations is None:
+        citations = []
+
     record = SentimentScore(
         ticker_id=ticker.id,
         classification=classification,
         confidence=confidence,
         source=source,
         timestamp=timestamp,
+        reasoning=reasoning,
+        citations_json=json.dumps(citations),
     )
     db.add(record)
     await db.commit()