
Keep the “why” of design change in Git
A geometric diff tells us what moved. A semantic diff can preserve why the architecture changed.
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Koyu is a continuing thought experiment about the source of architecture in the LLM era. These notes record the questions, decisions, and working results along the way.

A geometric diff tells us what moved. A semantic diff can preserve why the architecture changed.
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Plan, 3D, schedules, and checks are different projections of one architectural source—not competing originals.
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Geometry records where things ended up. Koyu asks how the source can preserve use, adjacency, boundary, passage, and intent.
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A hobby and thought experiment about moving geometry from source to output—and fitting the source of an entire building inside an LLM context.
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