feat: review delete/update AP propagation, remote actor avatars, OpenAPI updates

- Send Delete activity when a review is deleted
- Send Update(Note) activity when a review is edited
- Remote actor avatars shown in followers/following pages
- OpenAPI spec updated with profile, blocked domains, blocked actor endpoints
- Fix: worker wire() call missing allow_registration argument

crates/adapters/template-askama/templates/following.html

@@ -10,6 +10,9 @@
 <ul class="following-list">
 {% for actor in actors %}
 <li class="following-item">
+  {% if let Some(avatar) = actor.avatar_url %}
+  <img src="{{ avatar }}" alt="" style="width:32px;height:32px;border-radius:50%;vertical-align:middle;margin-right:6px" />
+  {% endif %}
   <strong>{{ actor.handle }}</strong>
   {% if let Some(name) = actor.display_name %}
   ({{ name }})