The help output names the three documents an operator is owed - #172

An operator who runs the binary and never opens the repository had no route
to the intended-use notice, the licence or the privacy document. The runner
knew where all three were and said nothing about any of them, so for that
reader the three files did not exist.

The last paragraph of the usage text now names them. It names rather than
restates, because a paraphrase printed by a binary somebody downloaded months
ago is a copy of a document that has since moved on and the reader cannot tell
which of the two they hold.

The two limits this rests on are written at the declaration rather than only
in the issue. A notice is not a control and printing it prevents nothing, so
it should not be counted as a thing that stops misuse when somebody later asks
what does. And a notice an operator has to run a verb to see is weaker than
one sitting in the download beside the binary, which is why both routes are
wanted rather than either alone.

The guard is here because nothing else in the tree holds these strings. The
paths leg of the invariants scan takes this repository's own documents as its
subject, which is the files at the root and everything under docs/, and a path
named inside the runner is outside that by the leg's own reckoning. The test
asserts both halves of the walk an operator makes: that the text names the
file, and that the file is in the tree to be found.

Part of #36. It closes neither clause of that done-condition, which asks for
the version output and the release archive as well, and both of those wait on
something that does not exist yet.