feat(world): world substrate + reusable lifetime-composition helpers (Aaron 2026-05-28 naming substrate + 'do you have to write custom code everytime' answer); 14 tests pass#5774

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otto-cli/world-and-reusable-lifetime-composition-helpers-naming-substrate-aaron-2026-05-28Lucent-Financial-Group/Zeta:otto-cli/world-and-reusable-lifetime-composition-helpers-naming-substrate-aaron-2026-05-28Copy head branch name to clipboard