Remove the in_namespace edge relation. A node now belongs to a namespace if that
namespace has has_ownership on it. This simplifies the model: namespace membership
is determined by the ownership chain rather than a separate relation type.
Changes:
- Remove RelInNamespace constant
- Add Namespace fields to AddInput, UpdateInput, and ListFilter
- Update Add() to resolve namespace from input and assign it as owner
- Update List() to filter by namespace ownership instead of in_namespace edges
- Update() can now transfer nodes between namespaces via ownership transfer
- Remove in_namespace self-references from ensureNamespace/ensureGlobalNamespace
The ownership chain now fully describes both permissions and namespace membership,
reducing redundancy. All tests pass with the new model.
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
When a node is created in a namespace, the namespace now owns it rather than the creator. This allows namespaces to manage content ownership. Namespace nodes themselves remain owned by their creator. Users retain transitive ownership through their default namespace: user→has_ownership→namespace→has_ownership→node.
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
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