fusion-invariants-lint-manual-no-drift-guard

The fusion-invariants-lint.py (71/71 PASS) is run manually per session. No hook or git pre-commit wires it to Write/Edit operations on SKILL.md files. Taxonomy drift can accumulate silently between audits. Wire as PreToolUse on Write+Edit targeting /root/.claude/skills/**/SKILL.md or as git pre-commit.