Frontend: add Homepage to extensions modal

[Williangalvani]

I don't think I like the way this looks. feedback is appreciated

fix #3834

Summary by Sourcery

Add extension homepage and improved author contact display to the extensions details modal.

New Features:

• Display an extension homepage link in the details modal when a website URL is available.

Enhancements:

• Show authors in the extension details modal with icons and mailto links instead of a plain text list.
• Extend the extension data type to include an optional website field used by the UI.

Summary by Sourcery

Add support for displaying an extension homepage link in the extension details modal.

New Features:

• Show a homepage button in the extension details modal when an extension provides a website URL.

Enhancements:

• Extend the extension metadata type to include an optional website field used by the UI.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Adds support for an optional extension homepage URL and exposes it in the Extension Details modal via an icon button, while extending the ExtensionData type to include the new website field.

Updated class diagram for ExtensionData with optional website

classDiagram
  class ExtensionData {
    string id
    string name
    string version
    string description
    string author
    string company_logo
    string extension_logo
    boolean is_compatible
    string website
  }

  note for ExtensionData "website is optional and used to render the Homepage button in ExtensionDetailsModal"

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File-Level Changes

Change	Details	Files
Expose an extension homepage link in the Extension Details modal when available.	Render a homepage icon button in the modal header if the extension has a website URL. Wire the button to open the homepage in a new tab with appropriate security-related rel attributes. Attach a tooltip label to clarify the button purpose.	core/frontend/src/components/kraken/modals/ExtensionDetailsModal.vue
Extend the extension metadata model to carry an optional website URL used by the UI.	Add an optional website field to the ExtensionData interface so the frontend can safely reference extension.website.	core/frontend/src/types/kraken.ts

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#3834	Expose a visible link to an extension's website in the extension store UI whenever the website URL is present in the manifest.	✅
#3834	Extend the extension data model to include a website field sourced from the manifest so it can be used by the frontend.	✅

Possibly linked issues

• Extension cards in the store could show a link to the extension website #3834: The PR adds an extension homepage button in the details modal, directly implementing the requested UI homepage display.
• Extension cards in the store could show a link to the extension website #3834: PR uses the manifest website field to display an extension homepage button in the details modal, matching request.

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[sourcery-ai]

Hey - I've left some high level feedback:

• For accessibility, consider adding an explicit aria-label on the icon button (e.g., aria-label="Homepage") so screen readers don’t rely solely on the tooltip.
• Since the website URL comes from extension data, it may be worth normalizing/validating it before binding to :href to avoid malformed or unsafe URLs being rendered as links.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- For accessibility, consider adding an explicit aria-label on the icon button (e.g., aria-label="Homepage") so screen readers don’t rely solely on the tooltip.
- Since the website URL comes from extension data, it may be worth normalizing/validating it before binding to :href to avoid malformed or unsafe URLs being rendered as links.

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[rafaellehmkuhl]

Nice! That will help!