feat(cedar): real Cedar policy engine binding#30
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Add ca2a_runtime.cedar.CedarPolicy, backed by cedarpy (the engine cMCP runs): each capability is evaluated as a Cedar authorization request whose action id is the capability name; a capability is permitted iff Cedar returns Allow. A new ca2a_runtime.policy.Policy protocol makes LocalPolicy (allow set) and CedarPolicy interchangeable in the peer path, so effective_scope / enforce_peer_call / handle_peer_request accept either. Adds the cedarpy dependency. Suite: 152 passed. Closes #10 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
Wires a real Cedar policy engine as an option for the local policy (approved: adds the
cedarpydependency, the same engine cMCP runs).ca2a_runtime.cedar.CedarPolicy: evaluates each capability as a Cedar authorization request (action id = capability name); permitted iff Cedar returnsAllow.ca2a_runtime.policy.Policyprotocol:LocalPolicy(allow set) andCedarPolicyare now interchangeable in the peer path (effective_scope,enforce_peer_call,handle_peer_requestaccept either).Suite: 152 passed, 97% coverage.
Closes #10
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