chore: refactor backend around domain types (#26)

Reviewed-on: #26

crates/signed_core/src/deletions.rs

@@ -2,25 +2,14 @@ use std::collections::HashSet;
 
 use nostr::prelude::*;
 
-/// NIP-09 deletion requests and NIP-62 vanish requests,
-/// built from the kind-5 and kind-62 events in the local database.
-///
-/// Deleted events are hidden before they reach the UI.
-///
-/// Pass any event through [`Deletions::is_deleted`] before showing it.
 pub struct Deletions {
-    /// `(deleted event id, expected author)` from `e` tags of kind-5 events.
     ids: HashSet<(EventId, PublicKey)>,
-    /// `(coordinate, expected author, cutoff)` from `a` tags of kind-5 events.
-    ///
-    /// All versions of the addressable event up to `cutoff` are deleted.
+    // All versions of the addressable event up to `cutoff` are deleted.
     coords: Vec<(Coordinate, PublicKey, Timestamp)>,
-    /// `(author, cutoff)` from kind-62 vanish requests.
     vanished: Vec<(PublicKey, Timestamp)>,
 }
 
 impl Deletions {
-    /// Build the deletion index from raw kind-5 and kind-62 events.
     pub fn from_events(events: impl IntoIterator<Item = Event>) -> Self {
         let mut ids = HashSet::new();
         let mut coords = Vec::new();
@@ -36,8 +25,8 @@ impl Deletions {
                         .map(|c| (c, event.pubkey, event.created_at)),
                 );
             } else if event.kind == Kind::RequestToVanish {
-                // Client-side we can't verify which relay the request targeted.
-                // Any vanish request is then honored for the author's events.
+                // We can't verify which relay the request targeted, so any
+                // vanish request is honored for the author's events.
                 vanished.push((event.pubkey, event.created_at));
             }
         }
@@ -49,10 +38,8 @@ impl Deletions {
         }
     }
 
-    /// Whether the event is covered by a valid deletion or vanish request.
-    /// A request is valid when its author matches the deleted event's author, per NIP-09.
-    ///
-    /// Addressable events are deleted up to the request's `created_at`.
+    // A request is valid when its author matches the deleted event's author,
+    // per NIP-09. Addressable events are deleted up to the request's `created_at`.
     pub fn is_deleted(&self, event: &Event) -> bool {
         if self
             .vanished