- Add credentials/ to PRESERVE_PATHS so rsync --delete doesn't wipe
user credential stores on framework upgrades
- Add AGENTS.md and STANDARDS.md to PRESERVE_PATHS to protect
user-customized copies from being deleted during sync
- Seed AGENTS.md and STANDARDS.md from defaults/ on first install
(previously only existed in defaults/ but never copied to framework root)
- Create credentials/ directory during install (alongside memory/)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>