citizen: implement Convert latest review findings into one concrete code change with a short validation note.

contracts/interfaces/ILabRegistry.sol

@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.19;
+
+interface ILabRegistry {
+    /// @notice Represents the core structure of a registered lab
+    struct LabEntity {
+        address owner;
+        bytes32 labHash;
+        uint256 registrationTimestamp;
+        string name;
+        string description;
+        string[] capabilities;
+        bool isActive;
+        uint256 reputationScore;
+    }
+
+    /// @notice Emitted when a new lab is registered
+    event LabRegistered(
+        address indexed labOwner, 
+        bytes32 indexed labHash, 
+        string name
+    );
+
+    /// @notice Emitted when lab details are updated
+    event LabUpdated(
+        bytes32 indexed labHash, 
+        string updatedField
+    );
+
+    /// @notice Register a new lab entity
+    /// @param name Lab's human-readable name
+    /// @param description Detailed description of lab's purpose
+    /// @param capabilities List of research/technical capabilities
+    /// @return labHash Unique identifier for registered lab
+    function registerLab(
+        string memory name, 
+        string memory description, 
+        string[] memory capabilities
+    ) external returns (bytes32 labHash);
+
+    /// @notice Update existing lab metadata
+    /// @param labHash Unique lab identifier
+    /// @param description New lab description
+    /// @param capabilities Updated capabilities list
+    function updateLabDetails(
+        bytes32 labHash, 
+        string memory description, 
+        string[] memory capabilities
+    ) external;
+
+    /// @notice Check if a lab is currently active
+    /// @param labHash Lab's unique identifier
+    /// @return isActive Whether lab is currently registered and active
+    function isLabActive(bytes32 labHash) external view returns (bool);
+
+    /// @notice Retrieve full lab entity details
+    /// @param labHash Lab's unique identifier
+    /// @return Lab entity with all metadata
+    function getLab(bytes32 labHash) external view returns (LabEntity memory);
+
+    /// @notice Validate lab registration constraints
+    /// @param labOwner Proposed lab owner address
+    /// @return Whether address can register a new lab
+    function canRegisterLab(address labOwner) external view returns (bool);
+}