Replaces the dead atlas_body_heightmaps DB-BLOB importer (Tyre review B2 —
it asserted 256×512 and wrote a dropped table) with the canonical asset bake:
- one-time rename of the legacy color heightmap.png → reliefmap.png for ALL
bodies (incl. Sol — display-file rename only, no re-sim);
- for each non-Sol inhabited body: simulate() at 1024×512 → clean reliefmap.png
(render_heightmap, no painted features) + 16-bit grayscale heightmap.png with
sea_level in a tEXt chunk;
- no systems.db writes; uses parse_system for proper body defs; run via uv.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>