Add 4 refracted rise/set functions completing the rise/set feature set:
- planet_next_rise/set_refracted: -0.569 deg threshold (refraction only,
point source — even Jupiter at opposition is only 24 arcsec)
- moon_next_rise/set_refracted: -0.833 deg threshold (refraction +
mean semidiameter, same as Sun)
Add IAU constellation identification from Roman (1987) CDS VI/42:
- 357 boundary segments covering all 88 constellations
- Precesses J2000 coordinates to B1875.0 epoch for lookup
- Two overloads: constellation(equatorial) and constellation(float8, float8)
- IMMUTABLE (compiled-in static data)
141 -> 147 SQL objects. 24 -> 25 regression suites. All 25 pass.
Integrate IAU 2000B nutation (~9 arcsec) into the solar system observation
pipeline via precess_and_nutate_j2000_to_date(). Affects all planet, star,
moon, and small body RA/Dec and az/el values. Satellite SGP4/TEME pipeline
unchanged.
Add make_equatorial(ra_hours, dec_deg, distance_km) constructor to replace
error-prone text literal casts.
Add 8 rise/set prediction functions (planet_next_rise/set, sun_next_rise/set,
moon_next_rise/set, sun_next_rise/set_refracted) using bisection algorithm
adapted from satellite pass prediction. Returns NULL for circumpolar and
polar night edge cases.
Fix DE fallback test fragility: replace exact float equality with tolerance
comparisons to handle GCC LTO inlining divergence across translation units.
132 -> 141 SQL objects. 22 -> 24 regression suites. All 24 passing.
