[Performance] Memoize macAddress in context/local.ts

[gonzaloriestra]

Why is this change necessary?

The MAC address lookup is an expensive operation that involves enumerating network interfaces. Currently, it is performed every time macAddress() is called, which happens at least once per command execution for analytics.

How does it address the problem?

By memoizing the Promise returned by macaddress.one(), we ensure that the lookup logic is executed only once per process. Subsequent calls will return the same promise, avoiding redundant work.

How to test your changes?

CI

Checklist

• I have followed the Contribution Guidelines.
• I have followed the Coding Style.
• I have added tests for my changes.
• I have updated the documentation accordingly.

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PR created automatically by Jules for task 9795491166669454994 started by @gonzaloriestra

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[github-actions]

Differences in type declarations

We detected differences in the type declarations generated by Typescript for this branch compared to the baseline ('main' branch). Please, review them to ensure they are backward-compatible. Here are some important things to keep in mind:

• Some seemingly private modules might be re-exported through public modules.
• If the branch is behind main you might see odd diffs, rebase main into this branch.

New type declarations

We found no new type declarations in this PR

Existing type declarations

packages/cli-kit/dist/public/node/crypto.d.ts

@@ -20,10 +20,10 @@ export declare function base64URLEncode(str: Buffer): string;
  */
 export declare function sha256(str: string): Buffer;
 /**
- * Generate the SHA1 hash of a string.
+ * Generate the SHA256 hash of a string.
  *
  * @param str - The string to hash.
- * @returns The SHA1 hash of the string.
+ * @returns The SHA256 hash of the string.
  */
 export declare function hashString(str: string): string;
 /**

packages/cli-kit/dist/public/node/context/local.d.ts

@@ -153,6 +153,11 @@ export declare function ciPlatform(env?: NodeJS.ProcessEnv): {
  * @returns Mac address.
  */
 export declare function macAddress(): Promise<string>;
+/**
+ * Resets the memoized mac address.
+ * This is only used for testing purposes.
+ */
+export declare function _resetMacAddress(): void;
 /**
  * Get the domain for theme kit access.
  *