Only anecdotal benchmarks for what ever that is worth.

I notice the LLM reasoning things like: "The maintainability score went down, let me look.... I see I've duplicated existing code which already exists in this module...I see this logic could be consolidated".

I have noticed file splitting is a strategy to improve the "score".

In my experience, I've been doing more the architectural guidance. There is also a rules engine which I have not used, but looks pretty interesting:

``` [constraints] max_cycles = 0 max_coupling = "B" max_cc = 25 no_god_files = true

[[layers]] name = "core" paths = ["src/core/"] order = 0

[[layers]] name = "app" paths = ["src/app/"] order = 2

[[boundaries]] from = "src/app/" to = "src/core/internal/" reason = "App must not depend on core internals" ```