fix(skills): keep OpenClaw harness context

[drewstone]

Summary

• restore OpenClaw and NanoClaw as valid peer harness context in the docs-slop scanner
• keeps the earlier active-machine cleanup intact: no OpenClaw skill install or .openclaw home directory is restored

Verification

• git diff --check origin/main...HEAD
• npm test
• python3 /home/drew/.codex/skills/.system/skill-creator/scripts/quick_validate.py claude/skills/docs-slop-audit
• node claude/skills/docs-slop-audit/scripts/scan-docs-slop.mjs /home/drew/code/docs/pages/infrastructure/harnesses.mdx /home/drew/code/docs/pages/blueprints/ai-agent-sandbox/runtime-and-harnesses.mdx /home/drew/code/docs/pages/blueprints/ai-agent-sandbox/dapp-and-indexer.mdx /home/drew/code/docs/pages/vibe/profile-schema.mdx
• git fetch origin main && git merge-tree --write-tree origin/main HEAD
• git push git@github.com:drewstone/dotfiles.git HEAD