The manifests disagreed and nothing noticed. tsconfig.json set rootDir to
./src while include also matched bin/**/*, which is TS6059, so no build had
succeeded; package.json meanwhile advertised main, types and a bin that a
successful build would have to produce. make check runs test, lint and
fmt-check, so neither half was ever exercised.
These tests read tsconfig.json and package.json and assert the contract
between them without invoking a compiler, which keeps them in the fast unit
suite: every include pattern must root under rootDir, and main, types and
bin.quak must equal the paths tsc will emit for src/index.ts and bin/quak.ts.
They also require a quak script pointing at the built CLI, which the README's
Getting Started block has always told the reader to run.
Three of them fail at this commit.
