Agent Trust Registry

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interface IAgentValidator {
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    function validateAgent(
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        string calldata agentDid,
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        bytes calldata attestationData
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    ) external returns (bool valid, uint8 score);
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}

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struct AgentRecord {
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    string agentDid;
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    string operatorDid;
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    uint8 trustScore;
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    AgentState state;          // registered, active, suspended, decommissioned
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    AutonomyLevel autonomy;    // intern, junior, senior, principal
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    uint256 registeredAt;
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    uint256 lastUpdated;
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    uint256 totalActions;
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    uint256 successfulActions;
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    string[] capabilities;
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}

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interface IAgentTrustRegistry {
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    function registerAgent(string calldata agentDid, string calldata operatorDid, string[] calldata capabilities) external;
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    function getAgent(string calldata agentDid) external view returns (AgentRecord memory);
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    function updateTrustScore(string calldata agentDid, int8 delta, string calldata reason) external;
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    function setAgentState(string calldata agentDid, AgentState state) external;
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    function promoteAgent(string calldata agentDid, AutonomyLevel level) external;
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    function recordAction(string calldata agentDid, bool success) external;
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    function addAttestation(string calldata agentDid, string calldata validatorDid, uint8 score) external;
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    function decommissionAgent(string calldata agentDid) external;
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    event AgentRegistered(string agentDid, string operatorDid);
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    event TrustScoreUpdated(string agentDid, uint8 oldScore, uint8 newScore, string reason);
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    event AgentStateChanged(string agentDid, AgentState oldState, AgentState newState);
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    event AgentPromoted(string agentDid, AutonomyLevel oldLevel, AutonomyLevel newLevel);
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    event AgentDecommissioned(string agentDid);
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}