endedAt is now date-only (YYYY-MM-DD)
- ChangedendedAt on sold-listing responses now returns a date-only string (e.g. "2026-07-19") instead of a full ISO 8601 datetime with a fabricated midnight-UTC time (e.g. "2026-07-19T00:00:00.000Z"). eBay's search results only ever expose a sold date, never a time of day, so the previous timestamp implied precision that doesn't exist. Non-breaking for any code parsing the value via new Date(...) or an equivalent date library — it resolves to the exact same instant. If you match endedAt against a strict ISO-datetime pattern (e.g. a regex requiring a T/Z suffix), update it to expect YYYY-MM-DD.
