org.cannadb.strainEdit

A field-level edit to a strain's living document (collaborative editing). Targets a strain via `subject` (the anchor record of the entity) and carries a sparse patch: scalar field overwrites in `set`, additive ops on open array fields in `add`/`remove`, and field clears in `unset`. The AppView folds accepted edits over the anchor record to materialize the canonical document; this record is one signed contribution, attributed to its publisher DID. See docs/05-collaborative-strains.md.