Net migration is constant over time #21

param_init() applies one age-by-nativity net migration rate to every year from 1950 to 2100, so locations whose growth varied by decade miss their census populations.

• R/param_initial.R:95, 253-254
• cSim accepts net migration only as an age vector per nativity
• calibrated populations miss boom-decade census anchors
  • San Diego about -28%
  • CA -19%, NV -22%, AZ -16%, HI -38%; ND +27%

Not introduced in this fork.

Fix on branch model-fixes.

Line numbers refer to branch rsims-wrapper at 209120a, as of 2026-11-03.