[SFenton]

Summary

• Stop installing the core-safety instruction and safely retire only recognized existing copies, preserving user-edited files and rollback behavior.
• Remove the project budget hook; keep archived budget tools optional. Run cross-project budget integration only when explicitly invoked with a manifest, not on routine pushes or PRs.
• Document the new installation behavior.

Validation

• npm test -- --test-reporter=dot: 235 passed, 13 skipped.
• Installer tests cover fresh installs, recognized retirement, unknown-file refusal, and rollback.