* fix(test): keep unit-test tooling inside the repo root in nested checkouts
Vitest's oxc tsconfig auto-discovery walks past the repo for files no
in-repo tsconfig owns, so a worktree nested in another checkout loaded
the enclosing checkout's tsconfig. Pin the transform tsconfig to an
explicit solution file listing the same projects auto-discovery finds.
The local module cache policy hash failed on esbuild warnings from an
ancestor package.json; only warnings located inside the root now fail.
* fix(test): guard the pinned transform tsconfig against project drift
Drop docs/site (no unit test transforms it) so its tsconfig cannot break
every transform, and fail when a project tsconfig is added or removed
without updating the pinned solution.
Jinwoo Hong
Neil