v2026.10.2

Summary

This release adds lower-frequency SW4 profiles and lets SW4 run without topography. It needs migrate because nzcvm.decay is now required.

Breaking changes

• nzcvm.decay is a required realisation key (#195). null means SW4 with topography. EMOD3D topo_type now maps to an nzcvm decay (SQUASHED → squashed, SQUASHED_TAPERED → tapered), BULLDOZED now raises, and create-sw4-input rejects a topography setting that is inconsistent with the decay.
• migrate is reworked (#178):
  • Usage is now migrate PATHS... VERSION.
  • migrate copy and migrate clone become copy-realisation-configs and clone-realisations.
  • --yes no longer overwrites values; that needs --overwrite. --check is new.
  • It exits non-zero on errors, and when run non-interactively without flags.

Bug fixes

• copy --configs copied every section instead of only the named ones (#178).
• migrate silently dropped customisations and wrote files before confirming (#178). Writes are now atomic.

Features

• New 26.7.0.25Hz and 26.7.0.5Hz SW4 profiles (#193). They use a coarser mesh, a matched prefilter and the same domain as 1 Hz.
• SW4 can run without topography by using an explicit nzcvm decay, e.g. {type: sleve, scale: 1000} (#195).

Significant dependency bumps

• nzcvm 2026.10.1 → 2026.10.3: velocity model fixes.
  • Points just outside the Vs30 surface, such as coastal stations, used to get Vs30 = 0, so the Ely taper started from zero. They now get NaN.
  • The offshore 1D layer spanning the basin bottom was being dropped, and is now kept.
  • SW4 and EMOD3D grids share one terrain-following coordinate system, and the defaults reproduce the old grids to within about 1 mm.
• New dependency questionary.

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What's Changed

• Strengthen log_utils tests to kill surviving mutants by @ucgmsim[bot] in #194
• Add 0.25 Hz and 0.5 Hz SW4 defaults (26.7.0.25Hz, 26.7.0.5Hz) by @lispandfound in #193
• Make migrate safer and easier to use by @lispandfound in #178
• Run SW4 without topography from an explicit NZCVM decay by @lispandfound in #195

Full Changelog: v2026.10.1...v2026.10.2