stigGeneratedDocsAssets

Returns the per-module Dokka asset tree: every .dot, .cyjson, .cyjson.gz, .sigma.json, .svg, source-browser manifest/shards, compressed model-check table JSON, and diagram pruning JSON files under the module's build/docs/ and build/stig/docs/ directories (recursive). Used by the root Dokka site to pick up STIG-generated diagrams from each subproject so they land in the publication's flat images/ directory.