The specs describe shipped features — incremental builds, the live
view, overlayfs staging, pkh new, pkh test, pkh lint phase 1 — and
the satellite-tools plan is implemented in full (no shell-outs to
dpkg-architecture, dpkg-checkbuilddeps or dpkg-parsechangelog
remain). The two unshipped proposals (the lint porting track and the
data/configuration architecture) stay in whatever notes the project
keeps outside the tree; the README remains the user-facing
documentation.