a zone is defined by a name, and zone revision list:

Like channels, a zone revision list is rolled up by following parent pointers, then collapsed down to get the final zone list and ordering.

A zonerevision is simply an operation and a channel uuid; this allows for linked zones to add new channels without disturbing downstream reorderings or renames.

reordering

remove chX

insert chX 2

renaming

first create channel chY with new name, linked to chX

replace chX chY

API considerations

the API should allow posting an entire zone list with zone settings, with the server breaking that down into zonerevisions: POST /zone/:zone_id

the API should also allow direct revision control: PUT /zone/:zone_id/revision