1. done — Confirmed “digits: 100 (Unknown key)” in the current live preview and removed only the redundant Data properties `digits` item; Sage checked all 13 exact entries and five 100-significant-digit decimal enclosures against independent formulas and the unchanged generator, and API read-back preserved all 18 entries and parameter order. The repaired preview has no unknown-key diagnostic.
2. done — Linked the method note's first Carlitz-Riordan mention to the live T264 target and cited Marckert at the first Sylvester mention in Comments; Sage verified the Catalan identity for all six sample sizes using T264's five relevant stored polynomials and its explicit small-case formula, and Marckert's preprint, page 5, explicitly names the four-point problem. Both references resolve in the repaired live previews.