Update cascades-tucson.md Syncro billing pattern to note the blank-contact
rule applies to all customers. Update feedback_syncro_cascades_contact.md
to be incident-detail only (Meredith Kuhn default), pointing to the global
rule in feedback_syncro_blank_contact.md. Update MEMORY.md index entry.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
