chore: remove features that don't compile

add: posts "circle" column

crates/core/src/model/communities.rs

@@ -260,6 +260,10 @@ pub struct Post {
     pub title: String,
     /// If the post is "open". Posts can act as tickets in a forge community.
     pub is_open: bool,
+    /// The ID of the circle this post belongs to. 0 means no circle is connected.
+    ///
+    /// If circle is not 0, community should be 0 (and vice versa).
+    pub circle: usize,
 }
 
 impl Post {
@@ -287,6 +291,7 @@ impl Post {
             poll_id,
             title: String::new(),
             is_open: true,
+            circle: 0,
         }
     }