Add template-backed audits and canonical repository defaults #526

Need

Process-PSModule guidance duplicates parts of the module template, permits Zensical and repository-layout drift, and does not make the dedicated Pester 6 migration a required v8 upgrade step. There is also no reusable read-only audit for comparing established module repositories with the current Template-PSModule baseline.

Expected outcome

Module repositories have one executable source for standard files, migration skills consume that source, and documentation sites use the shared MSX presentation profile with native folder-derived navigation.

Acceptance criteria

• A read-only skill audits a module repository against a resolved Template-PSModule commit without editing the template or consumer.
• Process-PSModule guidance states that every framework change includes a template-impact evaluation; template changes remain normal work in the template repository.
• The v8 upgrade skill requires the dedicated Pester 6.1.0 migration procedure to inventory and validate every test set.
• The v8 and Zensical migration skills use Template-PSModule/.github/zensical.toml as the generated-module source instead of embedding a second template.
• Shared Zensical presentation follows MSXOrg/docs where it differs from Process-PSModule, while repository-specific identity and content remain local.
• Standard Zensical configuration omits explicit nav and [project.extra.consent].
• Repository-local community health files live under .github/, with no root duplicates.
• Caller-workflow guidance links to the template-owned file instead of duplicating its contents.
• Process-PSModule's documentation site builds successfully with the updated configuration.
• A coordinated Template-PSModule pull request carries the generated-module configuration and community-file changes.

Scope

This task does not build the future fleet agent or managed-file distribution runtime. It establishes the audit operation and canonical template contract they can consume.

References

• Track fleet alignment: remove Zensical navigation.indexes from existing repos #418
• Reconcile the Repository Defaults required-files tables with what Template-PSModule ships #484
• State the real status of managed file distribution on the Repository Standard #488
• 🪲 [Fix]: New modules inherit the current repository baseline Template-PSModule#53