Add docs/hachimoji_torsor_consequences.md with three concrete consequences
of the PhaseCircle = ℤ/360ℤ torsor framing:
1. phaseEmbed_injective_on_canonical and BinaryLUT.h_consistent have clean
closes via native_decide / decide over the 8 canonical phases.
2. HachimojiTokenEmbed.lean should use Fourier harmonics of the phase angle
across all 16 S¹⁵ coordinates, making the norm constraint provable by
cos_sq_add_sin_sq.
3. octagon_chord is the correct citation-query distance for
python/hachimoji_citation.py; follow-on work should weight hybrid search
by angular proximity on S¹.
Also updates docs/GLOSSARY.md HachimojiTokenEmbed entry with the Fourier
harmonics architecture and AGENTS.md with a cross-reference.
Regenerate docs/PROJECT_MAP.* to track the new file.
Build: N/A (documentation only)
