Squashed 'core/' content from commit 4957443

git-subtree-dir: core
git-subtree-split: 4957443184ae0eb6323635a90a19acffb3e01d07

artdag/registry/__init__.py

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+# primitive/registry/__init__.py
+"""
+Art DAG Registry.
+
+The registry is the foundational data structure that maps named assets
+to their source paths or content-addressed IDs. Assets in the registry
+can be referenced by DAGs.
+
+Example:
+    registry = Registry("/path/to/registry")
+    registry.add("cat", "/path/to/cat.jpg", tags=["animal", "photo"])
+
+    # Later, in a DAG:
+    builder = DAGBuilder()
+    cat = builder.source(registry.get("cat").path)
+"""
+
+from .registry import Registry, Asset
+
+__all__ = ["Registry", "Asset"]