Fix NaN serialization in cache endpoints

api/main.py

@@ -1,3 +1,4 @@
+import math
 import os
 import hmac
 import hashlib
@@ -55,6 +56,14 @@ def verify_jwt(authorization: Optional[str] = Header(None)):
         raise HTTPException(status_code=401, detail="Invalid token")
 
 
+def _clean(row: dict) -> dict:
+    """Convert NaN/Inf floats → None so FastAPI can serialize the row to JSON."""
+    return {
+        k: (None if isinstance(v, float) and not math.isfinite(v) else v)
+        for k, v in row.items()
+    }
+
+
 def verify_admin(authorization: Optional[str] = Header(None)):
     if not authorization or authorization != f"Bearer {ADMIN_KEY}":
         raise HTTPException(status_code=401, detail="Unauthorized")
@@ -117,7 +126,7 @@ def get_analyst_cache(payload=Depends(verify_jwt), db=Depends(get_db)):
     cur = db.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
     table = "beta_analyst_cache" if payload.get("channel") == "beta" else "analyst_cache"
     cur.execute(f"SELECT * FROM {table}")
-    return {"data": cur.fetchall()}
+    return {"data": [_clean(dict(r)) for r in cur.fetchall()]}
 
 
 @app.get("/cache/fundamentals")
@@ -125,14 +134,15 @@ def get_fundamentals_cache(payload=Depends(verify_jwt), db=Depends(get_db)):
     cur = db.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
     table = "beta_fundamentals_cache" if payload.get("channel") == "beta" else "fundamentals_cache"
     cur.execute(f"SELECT * FROM {table}")
-    return {"data": cur.fetchall()}
+    return {"data": [_clean(dict(r)) for r in cur.fetchall()]}
 
 
 @app.get("/cache/sector")
 def get_sector_stats(payload=Depends(verify_jwt), db=Depends(get_db)):
     cur = db.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
-    cur.execute("SELECT * FROM sector_stats ORDER BY sector")
-    return {"data": cur.fetchall()}
+    table = "beta_sector_stats" if payload.get("channel") == "beta" else "sector_stats"
+    cur.execute(f"SELECT * FROM {table} ORDER BY sector")
+    return {"data": [_clean(dict(r)) for r in cur.fetchall()]}
 
 
 @app.get("/update")