Axel Meyer 6af36e9c6e Load schema-v2 maps with multi-layer storage and roof field ...

Replace the v1-only M.load path with a unified v2 load path that
auto-upgrades v1 JSON on read. Add build_map_v2 to produce map records
with atlases[], layers{}, and roof arrays. Add atlas_count, atlas_id_at,
has_layer, and is_indoor to the public API. Update tile_at to decode GIDs
from the surface layer for v2 maps, keeping M.create/build_map for
programmatic callers that supply a v1-style tilemap_table directly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-21 15:37:41 +02:00

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