Enhance delete event functionality and UI updates

- Improved logging in handle-delete.go for admin and owner checks during delete operations.
- Updated handle-event.go to ensure delete events are saved before processing, with enhanced error handling.
- Added fetchDeleteEventsByTarget function in nostr.js to retrieve delete events targeting specific event IDs.
- Modified App.svelte to include delete event verification and improved event sorting by creation timestamp.
- Enhanced UI to display delete event information and added loading indicators for event refresh actions.

app/web/src/nostr.js

@@ -302,7 +302,7 @@ export async function fetchEvents(filters, options = {}) {
   }
 }
 
-// Fetch all events with timestamp-based pagination using NDK
+// Fetch all events with timestamp-based pagination using NDK (including delete events)
 export async function fetchAllEvents(options = {}) {
   const {
     limit = 100,
@@ -317,6 +317,8 @@ export async function fetchAllEvents(options = {}) {
   if (until) filters.until = until;
   if (authors) filters.authors = authors;
   
+  // Don't specify kinds filter - this will include all events including delete events (kind 5)
+  
   const events = await fetchEvents(filters, { 
     limit: limit,
     timeout: 30000 
@@ -409,6 +411,41 @@ export async function fetchEventById(eventId, options = {}) {
   }
 }
 
+// Fetch delete events that target a specific event ID using Nostr
+export async function fetchDeleteEventsByTarget(eventId, options = {}) {
+  const {
+    timeout = 10000
+  } = options;
+
+  console.log(`Fetching delete events for target: ${eventId}`);
+
+  try {
+    const ndk = nostrClient.getNDK();
+    
+    const filters = {
+      kinds: [5], // Kind 5 is deletion
+      '#e': [eventId] // e-tag referencing the target event
+    };
+
+    console.log('Fetching delete events via NDK with filters:', filters);
+
+    // Use NDK's fetchEvents method
+    const events = await ndk.fetchEvents(filters, {
+      timeout
+    });
+
+    console.log(`Fetched ${events.size} delete events via NDK`);
+    
+    // Convert NDK events to raw events
+    const rawEvents = Array.from(events).map(event => event.rawEvent());
+    
+    return rawEvents;
+  } catch (error) {
+    console.error("Failed to fetch delete events via NDK:", error);
+    throw error;
+  }
+}
+
 
 // Initialize client connection
 export async function initializeNostrClient() {