Finally as wordpress already has a php server it was more simple to remove the angularjs part and do the job only with php… sad
There is now a functional plugin to embed discourse topic on wordpress pages and posts:
It provides a simple shortcode: [discourse topic_id='666'] which display the first post.
So if you have personal wordpress blog and you want to display the work you are doing in the community, no more need to copy/paste the content. You can maintain one topic and it will be updated everywhere!
Here an example:
https://www.poppy-project.org/test-discourse-shortcode/
It is still at a very early stage and need further work for the CSS and the template but it seems to work. Also I hope to get some contributors to improve the code quality, security and functionalities…