Final refinements

app/api/v1/endpoints/claims.py

@@ -102,7 +102,7 @@ def list_claims(
     verified = session.exec(
         select(func.count())
         .select_from(Claim)
-        .where(col(Claim.fact_check_status).ilike("verified"))
+        .where(col(Claim.fact_check_status).ilike("verified%"))
     ).one()
     disputed = session.exec(
         select(func.count())

app/api/v1/endpoints/overview.py

@@ -92,15 +92,12 @@ def executive_overview(session: Session = Depends(get_session)):
             )
         ).all()
 
-        # Bucket into 2-week intervals
+        # Bucket by day
         buckets: dict[str, dict[str, int]] = defaultdict(
             lambda: {label: 0 for label in top_labels}
         )
         for created_at, label in rows:
-            bucket_start = ninety_days_ago + timedelta(
-                weeks=2 * ((created_at - ninety_days_ago).days // 14)
-            )
-            bucket_key = bucket_start.strftime("%Y-%m-%d")
+            bucket_key = created_at.strftime("%Y-%m-%d")
             buckets[bucket_key][label] += 1
 
         for date_key in sorted(buckets):

app/api/v1/endpoints/sentiment.py

@@ -13,8 +13,7 @@
 from __future__ import annotations
 
 from collections import defaultdict
-from datetime import datetime, timedelta, timezone
-from typing import Optional
+from datetime import UTC, datetime, timedelta
 
 from fastapi import APIRouter, HTTPException, Query
 from supabase import create_client
@@ -43,7 +42,7 @@
 }
 
 
-def _normalize_sentiment_label(raw: Optional[str]) -> Optional[str]:
+def _normalize_sentiment_label(raw: str | None) -> str | None:
     """Map misinfo_checker's labels (POSITIVE / NEGATIVE / NEUTRAL) to
     canonical lowercase keys. Tolerant of stray casing / variants."""
     if raw is None:
@@ -58,7 +57,7 @@ def _normalize_sentiment_label(raw: Optional[str]) -> Optional[str]:
     return None
 
 
-def _parse_created_at(raw: Optional[str]) -> Optional[datetime]:
+def _parse_created_at(raw: str | None) -> datetime | None:
     """Supabase returns timestamps as ISO strings; normalize to UTC datetime."""
     if not raw:
         return None
@@ -67,8 +66,8 @@ def _parse_created_at(raw: Optional[str]) -> Optional[datetime]:
     except (ValueError, TypeError):
         return None
     if dt.tzinfo is None:
-        dt = dt.replace(tzinfo=timezone.utc)
-    return dt.astimezone(timezone.utc)
+        dt = dt.replace(tzinfo=UTC)
+    return dt.astimezone(UTC)
 
 
 @router.get("/overview/sentiment-shift", response_model=SentimentShiftResponse)
@@ -89,7 +88,10 @@ def sentiment_shift(
         raise HTTPException(status_code=503, detail="Supabase not configured")
 
     window_days, bucket_size_days = _RANGE_CONFIG[range_]
-    now = datetime.now(timezone.utc)
+    # Truncate to midnight UTC so bucket boundaries fall on calendar dates,
+    # preventing a single day's claims from being split across two buckets
+    # when the window boundary lands mid-day.
+    now = datetime.now(UTC).replace(hour=0, minute=0, second=0, microsecond=0)
     window_start = now - timedelta(days=window_days)
 
     sb = create_client(settings.SUPABASE_URL, settings.SUPABASE_SERVICE_ROLE_KEY)