* fix(engine.pm.commands): honor minimumReleaseAgeExclude in self-update
* refactor(config.version-policy): centralize publishedBy policy derivation
Extract the publishedBy / publishedByExclude derivation duplicated across
selfUpdate, dlx, outdated, and deps-resolver into a new
`getPublishedByPolicy()` helper, and the version-policy error rewrap
into `createPackageVersionPolicyOrThrow()`.
Also adds the global self-update test branch (no wantedPackageManager)
requested in PR review, and harmonizes the dlx/outdated error code
for invalid minimumReleaseAgeExclude patterns with install/self-update.
* style(config.version-policy): rename 'callsite' to 'call site' to satisfy cspell
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Co-authored-by: Zoltan Kochan <z@kochan.io>
