feat(dashboard): implement Zulip dashboard widget

[Thomas-git]

Add a dashboard widget showing recent or unread Zulip messages.

• Register ZulipDashboardWidget implementing IReloadableWidget and IButtonWidget for standardised item fetching (getItemsV2), auto-reload every 60s (getReloadInterval), and a "show more" button (getWidgetButtons) pointing to /#feed or /#inbox depending on mode
• Add getRecentMessages() and getUnreadMessages() to ZulipAPIService; both share a cleanMessageContent() helper that converts Zulip emoji spans (emoji-1f603 class) to Unicode and strips remaining HTML tags
• Expose a "Show only unread messages" toggle in PersonalSettings, stored as dashboard_show_unread; the widget adapts its empty-state copy and button link accordingly
• Add Vue dashboard component with polling fallback, avatar display, channel/topic subtitle, and direct-message support
• Register the widget in Application bootstrap and add webpack entry

Assisted-by: Claude Sonnet 4.6 noreply@anthropic.com

🤖 AI (if applicable)

• The content of this PR was partly generated using AI

[Thomas-git]

This PR improve on my previous #123

• Only one commit
• Tried to follow Conventional Commits specification
• Added Assisted-by:
• Screenshots
• Implement IReloadableWidget
• Add option to show recent or unread messages

Here is a dashboard widget screenshot

Dashboard with unread messages

Params screen

Please tell me if I need to add or modify something.

[edward-ly]

Nice work with the unread messages feature and the IReloadableWidget! Just a few more improvements to go:

1. Along with IReloadableWidget, it might be a good idea to implement IIconWidget as well. Its getIconUrl method would allow you to import the Zulip icon without the need for any external CSS such as css/dashboard.css.
2. Implementing IReloadableWidget also means that the src/views/Dashboard.vue component is no longer necessary, along with src/dashboard.js and the changes to webpack.js. As a consequence, the widget's load method can be empty too.
3. Also make sure in the getItemsV2 method to check that a Zulip account $isConnected before fetching messages, perhaps.
4. (Optional) Small point, but we typically prefix private class methods with a _ for added clarity.
5. And please resolve the errors found by PHP-CS-Fixer and Psalm in the CI checks as well.

And FYI, if you want to clean up your PR without creating a new one, a combination of git rebase and git push -f would allow you to do just that.

[Thomas-git]

I think your requested changes are done. Code seems cleaner by the way.

[edward-ly]

It sure does! I can take care of the remaining CI checks and rebase the branch from here. Thanks a lot for your contribution!

Actually, would you mind running composer run cs:fix and commit the result to resolve the last failing check, and rebase the branch so that the branch starts from the tip of main? I don't think I have the ability to modify your branch.

[Thomas-git]

Sure, I will do it. But composer run cs:fix don't work on my setup, so I need to figure why first.

[Thomas-git]

Done!

[edward-ly]

Perfect, thanks again!

[Thomas-git]

Any chance you push the new version to Nextcloud apps soon ?

[edward-ly]

Any chance you push the new version to Nextcloud apps soon ?

Sure, I'll see if I have time by the end of this week.