Mirror of done [using-projects-meta-fix-paths] for the sister skill.
setup-interns/SKILL.md still uses <project-root>/.common/... (cwd-
relative); should be ~/projects/.common/... like setup-projects-meta.
Surfaced during factory-bootstrap field-test (Phase 1 STOP because
claude inherited cwd C:\Windows\System32, no .common/ child there).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>