fix(devx): the docs-audit walker prunes the skill-examples build residue, and the emitter always cleans it up (#15446, #15457) (#15649)

Claude-Session: https://claude.ai/code/session_012zGPuVVX3deAx9LdjK8jCk

Co-authored-by: Claude <noreply@anthropic.com>

Author: claude[bot]