MarkdownModelExporter
Renders selected canonical elements as nested MkDocs admonitions using Dokka's model presentation rules.
Output layout mirrors the consumer's Gradle module layout, not the Kotlin package layout: <output>/<module path>/<viewpoint folder>/<source filename>.md, e.g. <output>/components/pecu/cdds/PthAdc/analysis/PthAdcAnalysis.md.
Forward and reverse relations use StigModelRelations, shared with the Dokka HTML pipeline. Admonition types are the lowercase names of the actual STIG metamodel classes. Every link resolves only to a page actually being written in this invocation; a reference to an element outside the current module/viewpoint selection renders as plain text and is recorded in unresolvedRelations. MarkdownExport.failOnUnresolvedLinks rejects such exports.