Add initial research notes and implementation roadmaps for Harmograms, Heliacal Visibility, and Hellenistic Astrology - Introduced `harmograms_phase0_research.md` detailing the core decisions, subsystem boundaries, and policy surfaces for the Harmograms computational family in Moira. - Created `heliacal_visibility_implementation_roadmap.md` outlining the phased implementation strategy for the heliacal and visibility subsystem, emphasizing the separation of astronomical substrate, visibility models, and observer environments. - Established `hellenistic_completion_roadmap.md` to guide the completion of Hellenistic astrology features in Moira, detailing current implementations, partial features, and absent elements, along with a phased approach for enhancements.

TheDaniel166 committed Apr 6, 2026