Add getAllGuardians getter function

src/GuardianManager.sol

@@ -252,4 +252,16 @@ abstract contract GuardianManager is IGuardianManager {
     function removeAllGuardians(address account) internal {
         guardiansStorage[account].removeAll(guardiansStorage[account].keys());
     }
+
+    /**
+     * @notice Gets all guardians associated with an account
+     * @dev Return an array containing all the keys. O(n) where n <= 32
+     *
+     * WARNING: This operation will copy the entire storage to memory, which could
+     * be quite expensive.
+     * @param account The address of the account associated with the guardians
+     */
+    function getAllGuardians(address account) external returns (address[] memory) {
+        return guardiansStorage[account].keys();
+    }
 }

src/interfaces/IGuardianManager.sol

@@ -53,4 +53,6 @@ interface IGuardianManager {
     function removeGuardian(address guardian) external;
 
     function changeThreshold(uint256 threshold) external;
+
+    function getAllGuardians(address account) external returns (address[] memory);
 }

test/unit/GuardianManager/getAllGuardians.t.sol

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.25;
+
+import { UnitBase } from "../UnitBase.t.sol";
+
+contract GuardianManager_getAllGuardians_Test is UnitBase {
+    function setUp() public override {
+        super.setUp();
+    }
+
+    function test_getAllGuardians_Succeeds() public {
+        address[] memory guardians = emailRecoveryModule.getAllGuardians(accountAddress1);
+        assertEq(guardians.length, guardians1.length);
+        assertEq(guardians[0], guardians1[0]);
+        assertEq(guardians[1], guardians1[1]);
+        assertEq(guardians[2], guardians1[2]);
+    }
+}