* refactor(wsl): move the WSL guest bundle sources out of src/relay
The WSL hook relay and WSL browser network relay are built from src/relay but are
not part of the SSH relay. Move them, and the 46 relay modules the hook relay
bundles, to src/wsl-guest so the SSH relay can be deleted on its own. Pure
renames; the built bundles are byte-identical.
Adds a boundary test so nothing outside src/relay imports it except relay tests.
* fix(ci): exempt renamed files' existing lint debt in the changed-lines gate
* test(relay): keep the cast suppression on the wrapped line
* test(relay): only parse files that mention relay in the import boundary check
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Co-authored-by: m4air <m4air@Mac.localdomain>