feat(query): include session totals and stable framework names

cmd/query-api/main.go

@@ -207,6 +207,15 @@ func main() {
 		if nextCursor != nil {
 			resp["next_cursor"] = nextCursor.Format(time.RFC3339Nano)
 		}
+
+		// Include total count on the first page (no cursor) so the UI can show "X of Y"
+		if f.Cursor == nil {
+			total, err := db.CountSessions(r.Context(), f)
+			if err == nil {
+				resp["total"] = total
+			}
+		}
+
 		httpx.WriteJSON(w, http.StatusOK, resp)
 	})