Resolve historical naming drift between protocol spec and CLI by adopting the
plural form across both docs:
- docs/07-skill-protocol.md: drop the drift caveat; the four-tier priority is
now stated as .agents/skills / ~/.agents/skills / .claude/skills /
~/.claude/skills directly.
- docs/00-product-direction.md: align with the same plural form.
The CLI already uses .agents/skills (cli/src/agents/profiles/generic-fallback.ts
and cli/src/agents/resolver.ts). No code change required.