Upstream 3c2dad95, 8643bc9a, and the lon_to_nakshatra part of 9e04f0db. Exact star starts were split across int-division and modulo, so 16 of 27 openings reported a zero balance and skipped the mahadasha. Off-boundary longitudes keep the old modulo. BUG-1381.
Co-Authored-By: Grok (agent loop)
Co-authored-by: Cursor <cursoragent@cursor.com>