repo: sanitation sweep -- canonical phase-NN runbook + appendices; design-decisions D-001..D-042; canonical bundle; superseded files moved to remove/ for review

README: refresh stale runbook references, reflect D-019 scope reduction ...

The v1 deployment order block referenced runbooks 00-08 which are
               being moved to deprecated/ in favor of v1-do-doc-NN execution documents.
               Replaces the order block with a pointer to the do-document set.

               Also reflects D-019: Designate deferred to v2; v1 tenant resolvers use
               public DNS. Adds the netbox-vip-queue.md reference. Updates the design-
               decisions D-range from D-001-D-016 to D-001-D-019.

Updated scope

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