FEATURE: Display oneboxed content in knowledge explorer topic view

assets/javascripts/discourse/components/knowledge-explorer-topic.js.es6

@@ -2,6 +2,6 @@ export default Ember.Component.extend({
   classNames: "knowledge-explorer-topic",
 
   originalPostContent: Ember.computed.readOnly(
-    "topic.post_stream.posts.firstObject.cooked"
+    "topic.post_stream.posts.firstObject"
   )
 });

assets/javascripts/discourse/templates/components/knowledge-explorer-topic.hbs

@@ -4,7 +4,7 @@
 
 <div class="topic-content">
   <h1>{{topic.title}}</h1>
-  {{{originalPostContent}}}
+  {{mount-widget widget="knowledge-explorer-post" args=(hash post=originalPostContent)}}
 </div>
 
 <a class="knowledge-explorer-nav-link more" href="/t/{{topic.id}}">

assets/javascripts/discourse/widgets/knowledge-explorer-post.js.es6

@@ -0,0 +1,13 @@
+import PostCooked from "discourse/widgets/post-cooked";
+import DecoratorHelper from "discourse/widgets/decorator-helper";
+import { createWidget } from "discourse/widgets/widget";
+
+export default createWidget("knowledge-explorer-post", {
+  html(attrs, state) {
+    return new PostCooked(
+      attrs.post,
+      new DecoratorHelper(this),
+      this.currentUser
+    );
+  }
+});