Chore: Absorb adapt-authoring-defaultplugins into contentplugin module

[taylortom]

Chore

• Merge the adapt-authoring-defaultplugins module into adapt-authoring-contentplugin

Rationale

As part of an ongoing effort to reduce the number of standalone modules (see adapt-security/adapt-authoring-core#112 for prior art), adapt-authoring-defaultplugins is a strong candidate for absorption.

The module is a single 26-line file (DefaultPluginsModule.js) that hooks into course creation to auto-add default plugins. Its only peer dependency is adapt-authoring-contentplugin — it has no standalone purpose outside of the content plugin lifecycle.

Approach

Following the pattern established in adapt-security/adapt-authoring-core#112:

• Move DefaultPluginsModule logic into the contentplugin module as an internal library class (not an AbstractModule subclass)
• Merge errors.json definitions into the contentplugin error definitions
• Merge config schemas into the contentplugin config schema
• Merge documentation and doc plugins (jsdoc-style annotations) into contentplugin
• Move relevant data schemas into contentplugin
• Deprecate the standalone adapt-authoring-defaultplugins package

[github-actions]

🎉 This issue has been resolved in version 1.6.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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