V138: CRM v1 — interaction tracker (contacts, companies, interactions).

Five tables for the phoenix_kit_crm plugin's first real data model: a Contact (cloned in spirit from staff Person, but the user link is optional), a Company, the contact↔company membership (carrying free-form role + department on the edge), and the interaction log (entries + their resolvable "involved parties" with an as-of-then profile snapshot).

phoenix_kit_crm_contacts

A CRM contact (client/customer). Unlike staff Person, user_uuid is nullable — most contacts never log in. A partial unique index keeps it 1:1 (one contact per user) only among the rows that are linked.

phoenix_kit_crm_companies

A company/organization record (its own data; not a login user).

phoenix_kit_crm_company_memberships

Contact↔company link, many-to-many, with free-form role_in_company and department on the edge + an is_primary flag (drives the headline display and the interaction snapshot).

phoenix_kit_crm_interactions

A logged interaction ("client called, discussed X"): type, when, body, the subject contact, and the staff user who logged it.

phoenix_kit_crm_interaction_parties

Flat, resolvable "who was involved" list per interaction. raw_name is always kept; contact_uuid / staff_person_uuid resolve to records when matched (exclusive-arc: at most one set). party_snapshot freezes the party's profile as it was at log time. staff_person_uuid is a soft ref (no FK) so the optional staff module stays optional.

All operations are idempotent.