v3.12.1 — bundle metaharness plugin scripts

Hotfix

3.12.0 shipped the metaharness CLI dispatcher + 9 MCP tools but the
plugin scripts the dispatcher delegates to weren't packed into the
published tarball. Real-user impact:

$ npx ruflo@3.12.0 metaharness score --path .
metaharness: plugins/ruflo-metaharness/scripts/ not found.
  Install ruflo with `npm i ruflo` or run from the ruflo repo.

Fix

@claude-flow/cli/package.json:

• Added "plugins" to the files field
• Added prepublishOnly hook that copies ../../../plugins/ruflo-metaharness/ into the package before npm pack

Verified end-to-end on a fresh install — all 10 npx ruflo metaharness * subcommands now find their underlying scripts.

Tarball size: 1310 → 1348 files (+38 plugin scripts).

Anyone on 3.12.0 should npm install ruflo@latest (or @3.12.1) to pick up the fix.

🤖 Generated with RuFlo