Attempted to fetch https://fred.stlouisfed.org/graph/fredgraph.csv?id=IC4WSA using Python urllib from this runtime.
Result: failed with urllib.error.URLError: <urlopen error [Errno -3] Temporary failure in name resolution>.
Implication: final chart data uses a clearly labeled illustrative minimal evidence set anchored to saved Bocha source discovery, not a live FRED CSV download.
