debug: add detailed naddr comparison logs

- Show all map keys when looking up reading progress
- Show d-tag generation from naddr in save flow
- This will help identify if naddr encoding/decoding is causing mismatch

src/components/Explore.tsx

@@ -623,7 +623,11 @@ const Explore: React.FC<ExploreProps> = ({ relayPool, eventStore, settings, acti
         identifier: dTag
       })
       const progress = readingProgressMap.get(naddr)
-      console.log('[progress] 🔍 Looking up:', naddr.slice(0, 50) + '... =>', progress ? Math.round(progress * 100) + '%' : 'not found')
+      console.log('[progress] 🔍 Looking up:', {
+        naddr: naddr.slice(0, 80),
+        mapKeys: Array.from(readingProgressMap.keys()).map(k => k.slice(0, 80)),
+        progress: progress ? Math.round(progress * 100) + '%' : 'not found'
+      })
       return progress
     } catch (err) {
       console.error('[progress] ❌ Error encoding naddr:', err)

src/services/readingPositionService.ts

@@ -48,7 +48,12 @@ function generateDTag(naddrOrUrl: string): string {
     try {
       const decoded = nip19.decode(naddrOrUrl)
       if (decoded.type === 'naddr') {
-        return `${decoded.data.kind}:${decoded.data.pubkey}:${decoded.data.identifier || ''}`
+        const dTag = `${decoded.data.kind}:${decoded.data.pubkey}:${decoded.data.identifier || ''}`
+        console.log('[progress] 📋 Generated d-tag from naddr:', {
+          naddr: naddrOrUrl.slice(0, 50) + '...',
+          dTag: dTag.slice(0, 80) + '...'
+        })
+        return dTag
       }
     } catch (e) {
       console.warn('Failed to decode naddr:', naddrOrUrl)