Implements a predict-verify loop for harness edits. Every SKILL.md, rules/*.md, or CLAUDE.md change is paired with a predicted impact stored in a manifest. The next session verifies predictions against actual outcomes, and a validation gate accepts edits only when improvement is measurable. Runs automatically on harvest-loop Step 0-c and on explicit invocation.
Install
npx skills add chrono-meta/forge-harness --skill edit-manifestnpx skills add chrono-meta/forge-harness --skill edit-manifest -a claude-code -gnpx skills add chrono-meta/forge-harness --skill edit-manifest -a codex -ggemini skills install https://github.com/chrono-meta/forge-harness.git --path plugins/fh-meta/skills/edit-manifestgh skill install chrono-meta/forge-harness edit-manifestgit clone --depth 1 https://github.com/chrono-meta/forge-harness /tmp/chrono-meta__forge-harness
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/chrono-meta__forge-harness/plugins/fh-meta/skills/edit-manifest ~/.claude/skills/edit-manifest # Claude Code
cp -R /tmp/chrono-meta__forge-harness/plugins/fh-meta/skills/edit-manifest ~/.agents/skills/edit-manifest # Codex, Cursor, Gemini CLI, Copilot, OpenCode