Please address the comments from this code review:

## Overall Comments
- The default implementation of `securityJwtMint` in the `DeskproClient` constructor returns a string, which does not match the declared `Promise<JwtMintResult>` type; consider either returning a `JwtMintResult` stub or throwing an explicit error for unsupported environments.
- The `securityJwtMint` wrapper inside `registerParentMethods` wraps the call in a `try/catch` that simply rethrows the error; you can remove the `try/catch` and directly return `parent._securityJwtMint(strategyName, context)` for simpler code.

## Individual Comments

### Comment 1
<location> `src/client/client.ts:251` </location>
<code_context>

     this.sendDeskproUIMessage = async () => { };

+    this.securityJwtMint = async () => "";
+
     if (this.options.runAfterPageLoad) {
</code_context>

<issue_to_address>
**issue (bug_risk):** Default `securityJwtMint` implementation returns a string, which is inconsistent with the declared `Promise<JwtMintResult>` type.

This implementation should return a `JwtMintResult`-shaped object rather than a string to match the `Promise<JwtMintResult>` signature and avoid type or runtime mismatches for callers expecting `{ token, expiresAt }`.
</issue_to_address>

### Comment 2
<location> `src/client/client.ts:438-439` </location>
<code_context>
          const result = await parent._securityJwtMint(strategyName, context);
          return result;

</code_context>

<issue_to_address>
**suggestion (code-quality):** Inline variable that is immediately returned ([`inline-immediately-returned-variable`](https://docs.sourcery.ai/Reference/Rules-and-In-Line-Suggestions/TypeScript/Default-Rules/inline-immediately-returned-variable))

```suggestion
          return await parent._securityJwtMint(strategyName, context);

```

<br/><details><summary>Explanation</summary>Something that we often see in people's code is assigning to a result variable
and then immediately returning it.

Returning the result directly shortens the code and removes an unnecessary
variable, reducing the mental load of reading the function.

Where intermediate variables can be useful is if they then get used as a
parameter or a condition, and the name can act like a comment on what the
variable represents. In the case where you're returning it from a function, the
function name is there to tell you what the result is, so the variable name
is unnecessary.
</details>
</issue_to_address>