Jonas Reith 8ae2f14bae Geography polish: ocean basins, unique name roots, name new islands
Feedback fixes on the just-shipped atlas:

- Ocean basins: the connected world ocean was always one feature ("1 ocean",
  unrealistic). Now generateGeography partitions it via a distance-from-land
  watershed -- greedy farthest-first deep-water centres (geoOceanSepRadians apart,
  >= geoOceanDeep rings from land) + multi-source BFS Voronoi over the ocean
  graph. Each basin -> a named Ocean (or Sea if small). Defaults (sep 1.4 rad,
  deep 4) give ~4-6 oceans on an Earth-like world, 1 on a waterworld. New geo*
  knobs geoOceanSepRadians / geoOceanDeep.
- Shared names: features now dedupe on the PROPER-NOUN root (not the formatted
  string), so a continent "Karn", a "Karn River" and "Karn Mountains" can't
  coexist. NameGen also avoids identical adjacent syllables ("shio-shio").
- New islands: Planet::nameNewLand(cell) adds a volcanic island to the atlas on
  the fly when it breaches the sea -- joins an adjacent landmass or mints a fresh
  unique Island name; the island-formation WorldEvent now carries that name.

test_geography adds: proper-noun-root uniqueness, nameNewLand join vs mint.
All 8 headless suites pass; GUI build clean. Docs updated. (Save still v17 --
GeoFeature layout unchanged.)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-29 17:24:58 +02:00
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