Add positive-gamma clamp in L1/L2/L3 Newton-Raphson iterations to
prevent divergence on extreme mass ratios. Add missing CREATE EXTENSION,
tighter L1/L2 precision checks (4 decimal places), lagrange_distance_oe
test with Ceres, L1-Earth-L2 ordering verification, and DE fallback
tests for planetary moon Lagrange functions.
Quintic Newton-Raphson for L1/L2/L3, analytic L4/L5. Includes
Sun-planet, Earth-Moon, and planet-moon mass ratio constants from
IAU 2012 / JPL DE441. Co-rotating to ecliptic J2000 frame transform.
Hill sphere and libration zone radius. 210/210 standalone tests pass.
