The DB-derived MAX(N.timestamp)+1 for a post is unreliable - many notes
were stored with the same timestamp (likely crawl time, not the actual
note timestamp), so passing it as before_timestamp excluded all real
replies and returned an empty notes array. Diagnostics showed two
unrelated posts coming back with identical totals (1625/1021/603) and
zero notes.
Now we start with no before_timestamp (newest page) and let pagination
walk backward via each page's last-note timestamp.
jim
1c7b6a1e86