fix mobile

src/components/Library/LibraryPublicationGrid.tsx

@@ -2,6 +2,7 @@ import PublicationCard from '@/components/Note/PublicationCard'
 import { Skeleton } from '@/components/ui/skeleton'
 import { libraryPublicationGridColumnClass, usePanelMode } from '@/hooks/usePanelMode'
 import type { LibraryPublicationEntry } from '@/lib/library-publication-index'
+import { eventTagAddress } from '@/lib/publication-index'
 import { isBooklistNip32Label } from '@/lib/nip32-label'
 import { cn } from '@/lib/utils'
 import { useScreenSize } from '@/providers/ScreenSizeProvider'
@@ -137,7 +138,7 @@ export default function LibraryPublicationGrid({
     <div className={cn('grid gap-4', gridCols)}>
       {entries.map((entry) => (
         <div
-          key={entry.event.id}
+          key={eventTagAddress(entry.event) ?? entry.event.id}
           className={cn(
             'flex min-w-0 flex-col rounded-lg border border-border bg-card shadow-sm overflow-hidden'
           )}

src/components/Note/PublicationIndexBody.tsx

@@ -3,6 +3,7 @@ import MarkdownArticle from '@/components/Note/MarkdownArticle/MarkdownArticle'
 import NoteOptions from '@/components/NoteOptions'
 import { DOCUMENT_RELAY_URLS, ExtendedKind, FAST_READ_RELAY_URLS, LIBRARY_RELAY_URLS } from '@/constants'
 import { useProgressivePublicationContent } from '@/hooks/useProgressivePublicationContent'
+import { useNearViewport } from '@/hooks/useNearViewport'
 import { orderedPublicationRefsFromIndex } from '@/lib/publication-asciidoc-assembler'
 import { publicationRefKey } from '@/lib/publication-section-fetch'
 import {
@@ -100,26 +101,13 @@ function PublicationSectionNodeView({
   const isMissing = Boolean(refKey && failedKeys.has(refKey))
   const isLoading = Boolean(refKey && loadingKeys.has(refKey))
   const needsLoad = Boolean(refKey && !node.event && !isMissing && !isLoading)
+  const isNear = useNearViewport(sectionElRef, { enabled: needsLoad, marginPx: 480 })
 
   useEffect(() => {
-    if (!needsLoad) return
-    const el = sectionElRef.current
-    if (!el) return
-
-    const observer = new IntersectionObserver(
-      (entries) => {
-        for (const entry of entries) {
-          if (!entry.isIntersecting) continue
-          onRequestLoad(node.ref, node.indexEvent)
-          onReadAhead()
-        }
-      },
-      { rootMargin: '720px 0px 480px 0px', threshold: 0 }
-    )
-
-    observer.observe(el)
-    return () => observer.disconnect()
-  }, [needsLoad, node.ref, node.indexEvent, onRequestLoad, onReadAhead])
+    if (!needsLoad || !isNear) return
+    onRequestLoad(node.ref, node.indexEvent)
+    onReadAhead()
+  }, [needsLoad, isNear, node.ref, node.indexEvent, onRequestLoad, onReadAhead])
 
   return (
     <section
@@ -179,9 +167,13 @@ function PublicationTableOfContents({
 }) {
   const { t } = useTranslation()
 
-  const scrollToSection = useCallback((id: string) => {
-    document.getElementById(id)?.scrollIntoView({ behavior: 'smooth', block: 'start' })
-  }, [])
+  const scrollToSection = useCallback(
+    (id: string) => {
+      if (!readingStarted) return
+      document.getElementById(id)?.scrollIntoView({ behavior: 'smooth', block: 'start' })
+    },
+    [readingStarted]
+  )
 
   if (entries.length === 0) return null
 

src/hooks/useProgressivePublicationContent.tsx

@@ -1,3 +1,4 @@
+import { isMobileBrowserProfile } from '@/lib/client-platform'
 import { indexPublicationEvents } from '@/lib/publication-asciidoc-assembler'
 import {
   collectPendingPublicationSectionLoads,
@@ -8,8 +9,11 @@ import { publicationRefKey, type PublicationSectionRef } from '@/lib/publication
 import type { Event } from 'nostr-tools'
 import { useCallback, useEffect, useRef, useState } from 'react'
 
-const INITIAL_PREFETCH_COUNT = 3
-const READ_AHEAD_COUNT = 1
+const READ_AHEAD_COUNT = 2
+
+function initialPrefetchCount(): number {
+  return isMobileBrowserProfile() ? 8 : 5
+}
 
 export function useProgressivePublicationContent(
   rootIndex: Event,
@@ -113,7 +117,7 @@ export function useProgressivePublicationContent(
         failedRef.current,
         inFlightRef.current
       )
-      for (const task of pending.slice(0, INITIAL_PREFETCH_COUNT)) {
+      for (const task of pending.slice(0, initialPrefetchCount())) {
         if (cancelled) return
         await loadSection(task.ref, task.indexEvent)
       }
@@ -134,6 +138,11 @@ export function useProgressivePublicationContent(
     prefetchTasks(pending.slice(0, READ_AHEAD_COUNT))
   }, [prefetchTasks, rootIndex])
 
+  useEffect(() => {
+    if (!enabled) return
+    readAhead()
+  }, [enabled, fetched, failedKeys, readAhead])
+
   return {
     fetched,
     failedKeys,

src/lib/library-index-idb-cache.ts

@@ -1,4 +1,3 @@
-import { ExtendedKind } from '@/constants'
 import {
   approxLibraryIndexEventBytes,
   getLibraryIndexCacheBudget
@@ -12,6 +11,13 @@ import {
 import indexedDb from '@/services/indexed-db.service'
 import type { Event } from 'nostr-tools'
 
+type PersistLibraryIndexCacheOptions = {
+  /** When false, merge rows only — skip reconcile so partial batches cannot wipe unrelated cache rows. */
+  reconcile?: boolean
+}
+
+let persistQueue: Promise<void> = Promise.resolve()
+
 export async function loadLibraryIndexCacheEvents(): Promise<Event[]> {
   try {
     const cached = await indexedDb.getLibraryPublicationIndexCacheEvents()
@@ -22,8 +28,9 @@ export async function loadLibraryIndexCacheEvents(): Promise<Event[]> {
     if (structural.length < cached.length) {
       void indexedDb.pruneUnverifiedLibraryPublicationIndexCacheEvents().catch(() => {})
     }
-    if (normalized.length !== cached.length) {
-      void persistLibraryIndexCacheEvents(normalized).catch(() => {})
+    const hasLegacyKeys = await indexedDb.libraryPublicationIndexCacheHasLegacyKeys()
+    if (normalized.length !== cached.length || hasLegacyKeys) {
+      void persistLibraryIndexCacheEvents(normalized, { reconcile: true }).catch(() => {})
     }
     return normalized
   } catch (e) {
@@ -36,21 +43,33 @@ export async function loadLibraryIndexCacheEvents(): Promise<Event[]> {
   }
 }
 
-export async function persistLibraryIndexCacheEvents(events: Event[]): Promise<void> {
+export async function persistLibraryIndexCacheEvents(
+  events: Event[],
+  options?: PersistLibraryIndexCacheOptions
+): Promise<void> {
   const map = buildStructuralPublicationIndexMap(filterStructuralIndexEvents(events))
   const normalized = publicationIndexMapValues(map)
   if (normalized.length === 0) return
-  try {
-    const budget = getLibraryIndexCacheBudget()
-    await indexedDb.mergeLibraryPublicationIndexCacheEvents(normalized, budget)
-    await indexedDb.reconcileLibraryPublicationIndexCache(map)
-  } catch (e) {
-    if (import.meta.env.DEV) {
-      logger.warn('[Library] index IDB write failed', {
-        message: e instanceof Error ? e.message : String(e)
-      })
+
+  const reconcile = options?.reconcile !== false
+  const run = async () => {
+    try {
+      const budget = getLibraryIndexCacheBudget()
+      await indexedDb.mergeLibraryPublicationIndexCacheEvents(normalized, budget)
+      if (reconcile) {
+        await indexedDb.reconcileLibraryPublicationIndexCache(map)
+      }
+    } catch (e) {
+      if (import.meta.env.DEV) {
+        logger.warn('[Library] index IDB write failed', {
+          message: e instanceof Error ? e.message : String(e)
+        })
+      }
     }
   }
+
+  persistQueue = persistQueue.then(run, run)
+  return persistQueue
 }
 
 export async function getLibraryIndexCacheFootprint(): Promise<{ count: number; bytes: number }> {

src/lib/library-publication-index.ts

@@ -631,7 +631,7 @@ export async function fetchLibraryIndexEvents(
   )
   indexMap = await mergeValidIndexBatch(indexMap, knownValidIds, firstPageNetwork)
   validMerged = publicationIndexMapValues(indexMap)
-  void persistLibraryIndexCacheEvents(validMerged)
+  void persistLibraryIndexCacheEvents(validMerged, { reconcile: false })
   emitProgress()
 
   if (import.meta.env.DEV) {
@@ -1901,13 +1901,12 @@ export async function searchLibraryPublicationsOnRelays(
   const settled = await Promise.all(batches)
   const networkEvents = dedupeEventsById(settled.flat())
   const valid = filterValidIndexEvents(networkEvents)
-  if (valid.length > 0) {
-    void persistLibraryIndexCacheEvents(valid)
-  }
-
   const mergedIndex = publicationIndexMapValues(
     mergePublicationIndexMaps(buildStructuralPublicationIndexMap(context.indexEvents ?? []), valid)
   )
+  if (valid.length > 0 || mergedIndex.length > 0) {
+    void persistLibraryIndexCacheEvents(mergedIndex)
+  }
   const indexByAddress = buildIndexByAddress(mergedIndex)
   const roots = searchLibraryPublicationIndex(q, mergedIndex, indexByAddress)
   const engagement = context.engagement ?? EMPTY_ENGAGEMENT

src/services/indexed-db.service.ts

@@ -237,7 +237,7 @@ const FULL_TEXT_NOTE_SEARCH_STORES: ReadonlySet<string> = new Set([
 const ARCHIVE_CALENDAR_PURGE_SETTING_KEY = 'archiveCalendarPurgedV37'
 
 /** Schema version we expect. When adding stores or migrations, bump this. */
-const DB_VERSION = 40
+const DB_VERSION = 41
 
 /** Hint age for profile/payment reads (stale rows still returned; background refresh). */
 const PROFILE_AND_PAYMENT_STALE_READ_MS = 5 * 60 * 1000
@@ -261,6 +261,66 @@ type TLibraryPublicationIndexCacheRow = {
   approxBytes: number
 }
 
+function approxLibraryPublicationIndexRowBytes(ev: Event): number {
+  try {
+    return new Blob([JSON.stringify(ev)]).size
+  } catch {
+    return 2048
+  }
+}
+
+/** v41: re-key library index rows from event id to kind:pubkey:d; dedupe by address. */
+function migrateLibraryPublicationIndexCacheToAddressKeys(transaction: IDBTransaction): void {
+  const store = transaction.objectStore(StoreNames.LIBRARY_PUBLICATION_INDEX)
+  const rows: TLibraryPublicationIndexCacheRow[] = []
+
+  const readReq = store.openCursor()
+  readReq.onsuccess = () => {
+    const cursor = readReq.result
+    if (cursor) {
+      rows.push(cursor.value as TLibraryPublicationIndexCacheRow)
+      cursor.continue()
+      return
+    }
+
+    const byAddress = new Map<string, TLibraryPublicationIndexCacheRow>()
+    for (const row of rows) {
+      const ev = row?.value
+      if (!ev || ev.kind !== ExtendedKind.PUBLICATION || !isStructuralPublicationIndex(ev)) continue
+      const addr = eventTagAddress(ev)
+      if (!addr) continue
+
+      const existing = byAddress.get(addr)
+      if (!existing) {
+        byAddress.set(addr, {
+          key: addr,
+          value: ev,
+          addedAt: row.addedAt ?? Date.now(),
+          lastAccessAt: row.lastAccessAt ?? row.addedAt ?? Date.now(),
+          approxBytes: row.approxBytes ?? approxLibraryPublicationIndexRowBytes(ev)
+        })
+        continue
+      }
+
+      const winner = pickNewerPublicationIndexEvent(existing.value, ev)
+      byAddress.set(addr, {
+        key: addr,
+        value: winner,
+        addedAt: Math.min(existing.addedAt, row.addedAt ?? existing.addedAt),
+        lastAccessAt: Math.max(existing.lastAccessAt, row.lastAccessAt ?? row.addedAt ?? 0),
+        approxBytes: approxLibraryPublicationIndexRowBytes(winner)
+      })
+    }
+
+    const clearReq = store.clear()
+    clearReq.onsuccess = () => {
+      for (const row of byAddress.values()) {
+        store.put(row)
+      }
+    }
+  }
+}
+
 /** Create any object stores from {@link StoreNames} that are missing (e.g. after partial upgrades). */
 function ensureMissingObjectStores(db: IDBDatabase): void {
   for (const storeName of Object.values(StoreNames)) {
@@ -536,6 +596,12 @@ class IndexedDbService {
               lib.createIndex('lastAccessAt', 'lastAccessAt', { unique: false })
             }
           }
+          if (event.oldVersion < 41) {
+            const tx = (event.target as IDBOpenDBRequest).transaction
+            if (tx && db.objectStoreNames.contains(StoreNames.LIBRARY_PUBLICATION_INDEX)) {
+              migrateLibraryPublicationIndexCacheToAddressKeys(tx)
+            }
+          }
           ensureMissingObjectStores(db)
         }
       }
@@ -3731,6 +3797,45 @@ class IndexedDbService {
     return toDelete.length
   }
 
+  /** True when any row is keyed by event id instead of kind:pubkey:d address. */
+  async libraryPublicationIndexCacheHasLegacyKeys(): Promise<boolean> {
+    await this.initPromise
+    if (!this.db?.objectStoreNames.contains(StoreNames.LIBRARY_PUBLICATION_INDEX)) return false
+
+    return new Promise((resolve, reject) => {
+      const tx = this.db!.transaction(StoreNames.LIBRARY_PUBLICATION_INDEX, 'readonly')
+      const req = tx.objectStore(StoreNames.LIBRARY_PUBLICATION_INDEX).openCursor()
+      req.onsuccess = () => {
+        const cursor = req.result as IDBCursorWithValue | null
+        if (!cursor) {
+          tx.commit()
+          resolve(false)
+          return
+        }
+        const rowKey = cursor.key as string
+        const row = cursor.value as TLibraryPublicationIndexCacheRow
+        const ev = row?.value
+        const addr = ev ? eventTagAddress(ev) : null
+        if (
+          !ev ||
+          ev.kind !== ExtendedKind.PUBLICATION ||
+          !isStructuralPublicationIndex(ev) ||
+          !addr ||
+          rowKey !== addr
+        ) {
+          tx.commit()
+          resolve(true)
+          return
+        }
+        cursor.continue()
+      }
+      req.onerror = (e) => {
+        tx.commit()
+        reject(idbEventToError(e))
+      }
+    })
+  }
+
   async getLibraryPublicationIndexCacheEvents(): Promise<Event[]> {
     await this.initPromise
     if (!this.db?.objectStoreNames.contains(StoreNames.LIBRARY_PUBLICATION_INDEX)) return []
@@ -3880,15 +3985,14 @@ class IndexedDbService {
         const ev = row?.value
         const addr = ev ? eventTagAddress(ev) : null
         const canon = addr ? canonical.get(addr) : undefined
-        if (
+        const invalid =
           !ev ||
           ev.kind !== ExtendedKind.PUBLICATION ||
           !isStructuralPublicationIndex(ev) ||
           !addr ||
-          rowKey !== addr ||
-          !canon ||
-          canon.id !== ev.id
-        ) {
+          rowKey !== addr
+        const superseded = Boolean(canon && canon.id !== ev?.id)
+        if (invalid || superseded) {
           toDelete.push(rowKey)
         }
         cursor.continue()