performance: don't spam nip05 validation on startup

Since we don't show these on events anymore, we don't need to spam nip05
validation. We can just check when we go to the profile page

Changelog-Fixed: Eliminate nostr address validation bandwidth on startup

damus/Models/HomeModel.swift

@@ -794,25 +794,14 @@ func process_metadata_profile(our_pubkey: String, profiles: Profiles, profile: P
         }
     }
 
+    if old_nip05 != profile.nip05 {
+        // if it's been validated before, invalidate it now
+        profiles.invalidate_nip05(ev.pubkey)
+    }
+
     let tprof = TimestampedProfile(profile: profile, timestamp: ev.created_at, event: ev)
     profiles.add(id: ev.pubkey, profile: tprof)
-    
+
-    if let nip05 = profile.nip05, old_nip05 != profile.nip05 {
-        
-        Task.detached(priority: .background) {
-            let validated = await validate_nip05(pubkey: ev.pubkey, nip05_str: nip05)
-            if validated != nil {
-                print("validated nip05 for '\(nip05)'")
-            }
-            
-            Task { @MainActor in
-                profiles.set_validated(ev.pubkey, nip05: validated)
-                profiles.nip05_pubkey[nip05] = ev.pubkey
-                notify(.profile_updated, ProfileUpdate(pubkey: ev.pubkey, profile: profile))
-            }
-        }
-    }
-    
     // load pfps asap
     
     var changed = false

damus/Nostr/Profiles.swift

@@ -40,6 +40,12 @@ class Profiles {
         }
     }
 
+    func invalidate_nip05(_ pk: String) {
+        validated_queue.async(flags: .barrier) {
+            self.validated.removeValue(forKey: pk)
+        }
+    }
+
     func set_validated(_ pk: String, nip05: NIP05?) {
         validated_queue.async(flags: .barrier) {
             self.validated[pk] = nip05

damus/Util/NIP05.swift

@@ -37,7 +37,8 @@ func fetch_nip05(nip05: NIP05) async -> NIP05Response? {
     guard let url = nip05.url else {
         return nil
     }
-    
+
+    print("fetching nip05 \(url.absoluteString)")
     guard let ret = try? await URLSession.shared.data(from: url) else {
         return nil
     }

damus/Views/Profile/ProfileView.swift

@@ -457,6 +457,7 @@ struct ProfileView: View {
                 dismiss()
             }
             .onAppear() {
+                check_nip05_validity(pubkey: self.profile.pubkey, profiles: self.damus_state.profiles)
                 profile.subscribe()
                 //followers.subscribe()
             }
@@ -565,3 +566,25 @@ extension View {
             .foregroundStyle(scheme == .dark ? .white : .black, scheme == .dark ? .white : .black)
     }
 }
+
+func check_nip05_validity(pubkey: String, profiles: Profiles) {
+    guard let profile = profiles.lookup(id: pubkey),
+          let nip05 = profile.nip05,
+          profiles.is_validated(pubkey) == nil
+    else {
+        return
+    }
+
+    Task.detached(priority: .background) {
+        let validated = await validate_nip05(pubkey: pubkey, nip05_str: nip05)
+        if validated != nil {
+            print("validated nip05 for '\(nip05)'")
+        }
+
+        Task { @MainActor in
+            profiles.set_validated(pubkey, nip05: validated)
+            profiles.nip05_pubkey[nip05] = pubkey
+            notify(.profile_updated, ProfileUpdate(pubkey: pubkey, profile: profile))
+        }
+    }
+}