fix: resolve all linting issues

- Remove unused DebugBus import from App.tsx
- Remove unused NostrEvent import from relayListService.ts
- Add comment to empty catch block in ContentPanel.tsx
- Remove unused targetUrlsMap variable from relayManager.ts
- All linting errors resolved, TypeScript type checking passes

src/App.tsx

@@ -18,7 +18,6 @@ import { useToast } from './hooks/useToast'
 import { useOnlineStatus } from './hooks/useOnlineStatus'
 import { RELAYS } from './config/relays'
 import { SkeletonThemeProvider } from './components/Skeletons'
-import { DebugBus } from './utils/debugBus'
 import { loadUserRelayList, loadBlockedRelays, computeRelaySet } from './services/relayListService'
 import { applyRelaySetToPool, getActiveRelayUrls, ALWAYS_LOCAL_RELAYS } from './services/relayManager'
 import { Bookmark } from './types/bookmarks'

src/components/ContentPanel.tsx

@@ -581,6 +581,7 @@ const ContentPanel: React.FC<ContentPanelProps> = ({
               const naddr = nip19.naddrEncode({ kind: 30023, pubkey: currentArticle.pubkey, identifier: dTag })
               hasRead = hasRead || archiveController.isMarked(naddr)
             } catch (e) {
+              // Silently ignore encoding errors
             }
           }
         } else {

src/services/relayListService.ts

@@ -1,5 +1,4 @@
 import { RelayPool } from 'applesauce-relay'
-import { NostrEvent } from 'nostr-tools'
 import { queryEvents } from './dataFetch'
 
 export interface UserRelayInfo {

src/services/relayManager.ts

@@ -45,7 +45,6 @@ export function applyRelaySetToPool(
   // Normalize all URLs to match pool's internal format
   const currentUrls = new Set(Array.from(relayPool.relays.keys()))
   const normalizedTargetUrls = new Set(finalUrls.map(normalizeRelayUrl))
-  const targetUrlsMap = new Map(finalUrls.map(url => [normalizeRelayUrl(url), url]))
 
   console.log('[relayManager] applyRelaySetToPool called')
   console.log('[relayManager] Current pool has:', currentUrls.size, 'relays')