feat: add DeviceUnresponsive error code and mapping (#442)

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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Adds support for unresponsive device handling in the hardware wallet
SDK.
> 
> - Introduces `ErrorCode.DeviceUnresponsive` (3006) in
`hardware-errors-enums.ts`
> - Maps Ledger status `0x6f00` to `DeviceUnresponsive` in
`hardware-error-mappings.ts` with user guidance
> - Extends tests in `hardware-error-mappings.test.ts` to validate the
new mapping and structure
> - Updates `CHANGELOG.md` under Unreleased
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
949735a. This will update automatically
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Author: mathieuartu

packages/hw-wallet-sdk/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Add `DeviceUnresponsive` error code and Ledger mapping for unresponsive device state ([#442](https://github.com/MetaMask/accounts/pull/442))
+
 ## [0.1.0]
 
 ### Added

packages/hw-wallet-sdk/src/hardware-error-mappings.test.ts

@@ -75,6 +75,16 @@ describe('HARDWARE_ERROR_MAPPINGS', () => {
       });
     });
 
+    describe('device state errors', () => {
+      it('maps 0x6f00 to device unresponsive', () => {
+        const mapping = errorMappings['0x6f00'];
+        expect(mapping.code).toBe(ErrorCode.DeviceUnresponsive);
+        expect(mapping.severity).toBe(Severity.Err);
+        expect(mapping.category).toBe(Category.DeviceState);
+        expect(mapping.userMessage).toContain('not responding');
+      });
+    });
+
     it('has valid structure for all mappings', () => {
       Object.entries(errorMappings).forEach(([_, mapping]) => {
         expect(mapping).toHaveProperty('code');

packages/hw-wallet-sdk/src/hardware-error-mappings.ts

@@ -113,6 +113,14 @@ export const LEDGER_ERROR_MAPPINGS = {
     category: Category.DeviceState,
     userMessage: 'Ethereum app is out of date. Please update it to continue.',
   },
+  '0x6f00': {
+    code: ErrorCode.DeviceUnresponsive,
+    message: 'Device unresponsive',
+    severity: Severity.Err,
+    category: Category.DeviceState,
+    userMessage:
+      'Your device is not responding. Please disconnect and reconnect your device.',
+  },
 };
 
 export const BLE_ERROR_MAPPINGS = {

packages/hw-wallet-sdk/src/hardware-errors-enums.ts

@@ -25,6 +25,7 @@ export enum ErrorCode {
   DeviceDisconnected = 3003,
   DeviceUsedElsewhere = 3004,
   DeviceCallInProgress = 3005,
+  DeviceUnresponsive = 3006,
   DeviceNotFound = 3010,
   DeviceMultipleConnected = 3011,
   DeviceMissingCapability = 3020,