Add TOML reference docs for all world data types
- world/MANIFEST.md: manifest.toml and directory layout
- world/races/RACES.md: race schema (stats, body, natural, resistances, etc.)
- world/classes/CLASSES.md: class schema (base_stats, growth, hidden, guild)
- world/guilds/GUILDS.md: guild schema and [growth]
- world/spells/SPELLS.md: spell schema and types
- world/town/REGION.md: region.toml
- world/town/rooms/ROOMS.md: room schema and exits
- world/town/npcs/NPCS.md: NPC schema, race/class resolution
- world/town/objects/OBJECTS.md: object schema and [stats]
Made-with: Cursor
e5e7057650