* refactor: move rules engine into core SDK as internal
Move the RulesEngineInternal sources and tests into the RevenueCat target
under Sources/RulesEngine and Tests/UnitTests/RulesEngine. The moved
symbols are marked internal so no new public API is exposed, and the
standalone RulesEngineInternal target is removed from Package manifests,
Tuist, the Xcode project, and CI. No usages yet.
Co-authored-by: Cursor <cursoragent@cursor.com>
* Document why the rules engine owns its own logging abstraction
Co-authored-by: Cursor <cursoragent@cursor.com>
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Co-authored-by: Cursor <cursoragent@cursor.com>
