Licence agreement between ./LICENSE, version.edn :license and the SPDX
headers in the source tree, as an open rule chain. Pure.

A rule returns nil when satisfied, else a message. Unlike an access
decision, every rule runs: a licence report that stopped at the first
problem would hide the rest, and a published pom can never be retracted.

clj-kondo invocations as values. Pure.

Constructing the argument vector is where a lint task silently stops
failing, so it is stated here and asserted rather than inlined at the
process call.

Names derived from a coordinate: the Maven symbol, artifact paths, the
registry URL a publish check probes, and the namespace/path correspondence
AOT compilation depends on. Pure.

The parts of a pom hive-build decides rather than delegates: the declared
licence, the dependency set, the source roots and the SCM tag. Pure.

The Project value object: raw version.edn data plus a resolved version, with
every default applied. Pure.

Nothing downstream reads version.edn again, so a default lives here exactly
once.

Publish destinations as data, behind a registry. Pure.

The registry is the dependency-inversion point: `plan` and the boundary
depend on the Target schema, never on a particular registry. A new
destination is a `register!` and no edit anywhere else.

What must be rewritten INSIDE a jar for two builds of identical inputs to be
byte-identical. Pure.

Fixing ZIP entry timestamps is not enough: build tooling also writes wall
clock time and host details into entry content, where a timestamp rewrite
cannot reach them. Each such source is a rule, so a newly discovered one is
an addition rather than an edit.

Semantic versions as values: parse, render, order, bump. Pure.