speed up entire app

src/components/EventPowLabel/index.tsx

@@ -30,7 +30,7 @@ export default function EventPowLabel({
       title={t('Proof of Work')}
     >
       <Pickaxe className="size-3.5 shrink-0" strokeWidth={2.5} aria-hidden />
-      {t('POW: difficulty {{difficulty}}', { difficulty })}
+      {t('POW {{difficulty}}', { difficulty })}
     </span>
   )
 }

src/components/Note/Superchat.tsx

@@ -16,10 +16,13 @@ import TurnIntoSuperchatButton from '../TurnIntoSuperchatButton'
 
 export default function Superchat({
   event,
-  className
+  className,
+  showAttestationAction = false
 }: {
   event: Event
   className?: string
+  /** Notifications feed only — attest incoming payments. */
+  showAttestationAction?: boolean
 }) {
   const { t } = useTranslation()
   const info = useMemo(() => getPaymentNotificationInfo(event), [event])
@@ -96,13 +99,19 @@ export default function Superchat({
           hasMetaLine && 'mt-1'
         )}
       >
-        <SuperchatPaymentMethodLabel paytoType={paytoType} />
-        <span className="text-base font-semibold text-yellow-400/90">{t('Superchat')}</span>
+        <SuperchatPaymentMethodLabel
+          paytoType={paytoType}
+          className="px-2.5 py-1.5 text-lg"
+          imgClassName="size-5"
+        />
+        <span className="text-xl font-semibold text-yellow-400/90">{t('Superchat')}</span>
       </div>
       {comment ? (
         <SuperchatCommentMarkdown event={event} comment={comment} className="mt-2" />
       ) : null}
-      <TurnIntoSuperchatButton event={event} prominent className="mt-3" />
+      {showAttestationAction ? (
+        <TurnIntoSuperchatButton event={event} prominent className="mt-3" />
+      ) : null}
     </div>
   )
 }

src/components/Note/SuperchatCommentMarkdown.tsx

@@ -23,7 +23,7 @@ export default function SuperchatCommentMarkdown({
       hideMetadata
       lazyMedia={false}
       className={cn(
-        'prose-lg max-w-none text-foreground [&_p]:text-xl [&_p]:font-semibold [&_p]:leading-snug',
+        'prose-xl max-w-none text-foreground [&_p]:text-[1.6875rem] [&_p]:font-semibold [&_p]:leading-snug',
         className
       )}
     />

src/components/Note/SuperchatPaymentMethodLabel.tsx

@@ -4,11 +4,13 @@ import { cn } from '@/lib/utils'
 
 export default function SuperchatPaymentMethodLabel({
   paytoType,
-  className
+  className,
+  imgClassName
 }: {
   /** Canonical or alias payto type (`lightning`, `monero`, `geyser`, …). */
   paytoType: string
   className?: string
+  imgClassName?: string
 }) {
   const canonical = getCanonicalPaytoType(paytoType)
   const label = getPaytoEditorTypeLabel(canonical)
@@ -21,7 +23,7 @@ export default function SuperchatPaymentMethodLabel({
         className
       )}
     >
-      <PaytoTypeIcon type={paytoType} />
+      <PaytoTypeIcon type={paytoType} imgClassName={imgClassName} />
       <span className="truncate">{label}</span>
     </span>
   )

src/components/Note/Zap.tsx

@@ -18,10 +18,12 @@ import TurnIntoSuperchatButton from '../TurnIntoSuperchatButton'
 
 export default function Zap({
   event,
-  className
+  className,
+  showAttestationAction = false
 }: {
   event: Event
   className?: string
+  showAttestationAction?: boolean
 }) {
   const { t } = useTranslation()
   const zapInfo = useMemo(() => getZapInfoFromEvent(event), [event])
@@ -112,10 +114,14 @@ export default function Zap({
           hasMetaLine && 'mt-1'
         )}
       >
-        <SuperchatPaymentMethodLabel paytoType={paytoType} />
-        <span className="text-base font-semibold text-yellow-400/90">{t('Superchat')}</span>
+        <SuperchatPaymentMethodLabel
+          paytoType={paytoType}
+          className="px-2.5 py-1.5 text-lg"
+          imgClassName="size-5"
+        />
+        <span className="text-xl font-semibold text-yellow-400/90">{t('Superchat')}</span>
         {amount != null ? (
-          <span className="text-lg font-bold tabular-nums tracking-tight text-foreground">
+          <span className="text-xl font-bold tabular-nums tracking-tight text-foreground">
             {formatAmount(amount)} {t('sats')}
           </span>
         ) : null}
@@ -123,7 +129,9 @@ export default function Zap({
       {comment ? (
         <SuperchatCommentMarkdown event={event} comment={comment} className="mt-2" />
       ) : null}
-      <TurnIntoSuperchatButton event={event} prominent className="mt-3" />
+      {showAttestationAction ? (
+        <TurnIntoSuperchatButton event={event} prominent className="mt-3" />
+      ) : null}
     </div>
   )
 }

src/components/Note/index.tsx

@@ -227,6 +227,9 @@ export default function Note({
   fullCalendarInvite,
   nip84HighlightEvents,
   deferAuthorAvatar = false,
+  /** When true, parent list already prefetches embeds — skip per-row duplicate fetches. */
+  skipEmbedPrefetch = false,
+  showPaymentAttestationAction = false,
   pinned = false
 }: {
   event: Event
@@ -245,6 +248,10 @@ export default function Note({
   nip84HighlightEvents?: Event[]
   /** When true, defer remote profile avatars until near-viewport (dense lists e.g. merged NIP-50 search). */
   deferAuthorAvatar?: boolean
+  /** Skip embedded-note prefetch when the feed list handles it in batch. */
+  skipEmbedPrefetch?: boolean
+  /** Notifications feed: show attest-superchat action on incoming payments. */
+  showPaymentAttestationAction?: boolean
 }) {
   const { t } = useTranslation()
   const { navigateToNote } = useSmartNoteNavigationOptional()
@@ -278,8 +285,9 @@ export default function Note({
   const displayEvent = useMemo(() => mergeTranslatedNote(event, noteTranslation), [event, noteTranslation])
 
   useLayoutEffect(() => {
+    if (skipEmbedPrefetch) return
     client.prefetchEmbeddedEventsForParents([event])
-  }, [event.id])
+  }, [event.id, skipEmbedPrefetch])
 
   const reactionDisplay = useNotificationReactionDisplay(event)
   const webReactionParentUrl = useMemo(
@@ -565,9 +573,17 @@ export default function Note({
   } else if (event.kind === ExtendedKind.PUBLIC_MESSAGE) {
     content = renderEventContent({ hideMetadata: true })
   } else if (event.kind === ExtendedKind.ZAP_REQUEST || event.kind === ExtendedKind.ZAP_RECEIPT) {
-    content = <Zap className="mt-2" event={displayEvent} />
+    content = (
+      <Zap className="mt-2" event={displayEvent} showAttestationAction={showPaymentAttestationAction} />
+    )
   } else if (event.kind === ExtendedKind.PAYMENT_NOTIFICATION) {
-    content = <Superchat className="mt-2" event={displayEvent} />
+    content = (
+      <Superchat
+        className="mt-2"
+        event={displayEvent}
+        showAttestationAction={showPaymentAttestationAction}
+      />
+    )
   } else if (event.kind === ExtendedKind.FOLLOW_PACK) {
     content = <FollowPackPreview className="mt-2" event={displayEvent} />
   } else if (

src/components/NoteCard/MainNoteCard.tsx

@@ -1,3 +1,4 @@
+import { memo } from 'react'
 import { ExtendedKind, isNip52CalendarCardKind } from '@/constants'
 import { Separator } from '@/components/ui/separator'
 import { getCachedThreadContextEvents } from '@/lib/navigation-related-events'
@@ -13,7 +14,27 @@ import Note from '../Note'
 import NoteStats from '../NoteStats'
 import RepostDescription from './RepostDescription'
 
-export default function MainNoteCard({
+export default memo(MainNoteCard, (prev, next) => {
+  return (
+    prev.event.id === next.event.id &&
+    prev.event.created_at === next.event.created_at &&
+    prev.className === next.className &&
+    prev.reposter === next.reposter &&
+    prev.embedded === next.embedded &&
+    prev.originalNoteId === next.originalNoteId &&
+    prev.pinned === next.pinned &&
+    prev.hideParentNotePreview === next.hideParentNotePreview &&
+    prev.bottomNoteLabel === next.bottomNoteLabel &&
+    prev.showFull === next.showFull &&
+    prev.fetchNoteStatsIfMissing === next.fetchNoteStatsIfMissing &&
+    prev.deferAuthorAvatar === next.deferAuthorAvatar &&
+    prev.searchListPreview === next.searchListPreview &&
+    prev.seenOnAllowlist === next.seenOnAllowlist &&
+    prev.showPaymentAttestationAction === next.showPaymentAttestationAction
+  )
+})
+
+function MainNoteCard({
   event,
   className,
   reposter,
@@ -26,7 +47,8 @@ export default function MainNoteCard({
   fetchNoteStatsIfMissing = true,
   deferAuthorAvatar = false,
   searchListPreview = false,
-  seenOnAllowlist
+  seenOnAllowlist,
+  showPaymentAttestationAction = false
 }: {
   event: Event
   className?: string
@@ -46,6 +68,7 @@ export default function MainNoteCard({
   /** Compact row: no stats bar, no separator, no boost badges (e.g. merged NIP-50 search). */
   searchListPreview?: boolean
   seenOnAllowlist?: readonly string[]
+  showPaymentAttestationAction?: boolean
 }) {
   const { t } = useTranslation()
   const { navigateToNote } = useSmartNoteNavigationOptional()
@@ -123,6 +146,8 @@ export default function MainNoteCard({
             hideParentNotePreview={hideParentNotePreview}
             showFull={showFull}
             deferAuthorAvatar={deferAuthorAvatar}
+            skipEmbedPrefetch={deferAuthorAvatar}
+            showPaymentAttestationAction={showPaymentAttestationAction}
             pinned={pinned}
           />
         </Collapsible>

src/components/NoteCard/index.tsx

@@ -19,7 +19,8 @@ const NoteCard = memo(function NoteCard({
   fetchNoteStatsIfMissing = true,
   deferAuthorAvatar = true,
   searchListPreview = false,
-  seenOnAllowlist
+  seenOnAllowlist,
+  showPaymentAttestationAction = false
 }: {
   event: Event
   className?: string
@@ -33,6 +34,7 @@ const NoteCard = memo(function NoteCard({
   deferAuthorAvatar?: boolean
   searchListPreview?: boolean
   seenOnAllowlist?: readonly string[]
+  showPaymentAttestationAction?: boolean
 }) {
   const { mutePubkeySet } = useMuteList()
   const { hideContentMentioningMutedUsers } = useContentPolicy()
@@ -74,6 +76,7 @@ const NoteCard = memo(function NoteCard({
       deferAuthorAvatar={deferAuthorAvatar}
       searchListPreview={searchListPreview}
       seenOnAllowlist={seenOnAllowlist}
+      showPaymentAttestationAction={showPaymentAttestationAction}
     />
   )
 }, (prevProps, nextProps) => {
@@ -89,7 +92,8 @@ const NoteCard = memo(function NoteCard({
     prevProps.fetchNoteStatsIfMissing === nextProps.fetchNoteStatsIfMissing &&
     prevProps.seenOnAllowlist === nextProps.seenOnAllowlist &&
     prevProps.deferAuthorAvatar === nextProps.deferAuthorAvatar &&
-    prevProps.searchListPreview === nextProps.searchListPreview
+    prevProps.searchListPreview === nextProps.searchListPreview &&
+    prevProps.showPaymentAttestationAction === nextProps.showPaymentAttestationAction
   )
 })
 

src/components/NoteList/index.tsx

@@ -129,7 +129,7 @@ if (import.meta.env.DEV && import.meta.hot) {
 }
 const SHOW_COUNT = 36 // Initial visible-row quota (filtered); higher = more rows on first paint
 /** Extra visible-row quota each time the user reaches the bottom while draining an already-loaded timeline. */
-const REVEAL_BATCH_STEP = 96
+const REVEAL_BATCH_STEP = 64
 /**
  * One “load more” chains relay pages until at least this many **new** events (after kind filter + id de-dupe) are
  * collected, so sparse kind filters do not feel stuck at ~10 rows per scroll.
@@ -154,6 +154,8 @@ const LOAD_MORE_SCROLL_PREFETCH_MIN_PX = 960
 const LOAD_MORE_SCROLL_PREFETCH_COOLDOWN_MS = 180
 /** When the scroll container is within this many px of the top, auto-merge pending live notes (see {@link NewNotesButton}). */
 const AUTO_MERGE_NEW_EVENTS_TOP_PX = 280
+/** Coalesce live `onNew` timeline updates to one React commit per frame burst. */
+const LIVE_ON_NEW_FLUSH_MS = 72
 
 function getNearestScrollableAncestor(node: HTMLElement | null): HTMLElement | null {
   if (!node) return null
@@ -761,7 +763,9 @@ const NoteList = forwardRef(
        * When set and the timeline is empty (after relays finish), show a link to Alexandria with a matching query
        * (hashtag / d-tag browse from {@link NormalFeed}).
        */
-      alexandriaEmptyUrl = null
+      alexandriaEmptyUrl = null,
+      /** Notifications feed: show attest-superchat bar on incoming payment cards. */
+      showPaymentAttestationAction = false
     }: {
       subRequests: TFeedSubRequest[]
       showKinds: number[]
@@ -824,6 +828,7 @@ const NoteList = forwardRef(
       relayAuthoritativeFeedOnly?: boolean
       /** Optional Alexandria `/events` URL when this feed’s timeline is empty (search / tag browse). */
       alexandriaEmptyUrl?: string | null
+      showPaymentAttestationAction?: boolean
     },
     ref
   ) => {
@@ -949,6 +954,18 @@ const NoteList = forwardRef(
     /** Dedupes layout-time pending sync so a new `events` array reference alone cannot loop setState. */
     const lastProfilePrefetchPubkeysKeyRef = useRef('')
     const clientFilteredVisibleCountRef = useRef(0)
+    const liveOnNewPendingRef = useRef<
+      Array<{ event: Event; route: 'profile' | 'home' | 'pending' }>
+    >([])
+    const liveOnNewFlushTimerRef = useRef<number | null>(null)
+    const liveOnNewFlushRef = useRef<() => void>(() => {})
+    const scheduleLiveOnNewFlush = useCallback(() => {
+      if (liveOnNewFlushTimerRef.current != null) return
+      liveOnNewFlushTimerRef.current = window.setTimeout(() => {
+        liveOnNewFlushTimerRef.current = null
+        liveOnNewFlushRef.current()
+      }, LIVE_ON_NEW_FLUSH_MS)
+    }, [])
 
     const noteFeedProfileContextValue = useMemo<NoteFeedProfileContextValue>(
       () => ({
@@ -2187,6 +2204,96 @@ const NoteList = forwardRef(
             eventMatchesSubRequestFilterWithWindow(event, filter as Filter)
           )
 
+        liveOnNewFlushRef.current = () => {
+          if (!effectActive) return
+          const batch = liveOnNewPendingRef.current.splice(0)
+          if (batch.length === 0) return
+
+          const profileBatch = batch.filter((row) => row.route === 'profile').map((row) => row.event)
+          const homeBatch = batch.filter((row) => row.route === 'home').map((row) => row.event)
+          const pendingBatch = batch.filter((row) => row.route === 'pending').map((row) => row.event)
+
+          if (profileBatch.length > 0 || homeBatch.length > 0) {
+            setEvents((oldEvents) => {
+              let base = timelineMergeBootstrapRef.current ?? oldEvents
+              let changed = false
+              const statsOnly: Event[] = []
+
+              for (const event of profileBatch) {
+                if (base.some((e) => e.id === event.id)) continue
+                if (
+                  isNip18RepostKind(event.kind) &&
+                  feedTimelineAlreadyRepresentsNip18Target(getNip18RepostTargetId(event), base)
+                ) {
+                  statsOnly.push(event)
+                  continue
+                }
+                if (timelineMergeBootstrapRef.current !== null) {
+                  timelineMergeBootstrapRef.current = null
+                }
+                base = [event, ...base]
+                changed = true
+              }
+
+              for (const event of homeBatch) {
+                if (base.some((e) => e.id === event.id)) continue
+                if (
+                  isNip18RepostKind(event.kind) &&
+                  feedTimelineAlreadyRepresentsNip18Target(getNip18RepostTargetId(event), base)
+                ) {
+                  statsOnly.push(event)
+                  continue
+                }
+                if (timelineMergeBootstrapRef.current !== null) {
+                  timelineMergeBootstrapRef.current = null
+                }
+                const cap = allowKindlessRelayExploreRef.current
+                  ? RELAY_EXPLORE_LIMIT
+                  : areAlgoRelays
+                    ? ALGO_LIMIT
+                    : LIMIT
+                base = collapseDuplicateNip18RepostTimelineRows(
+                  mergeEventBatchesById(base, [event], cap, areAlgoRelays)
+                )
+                changed = true
+              }
+
+              if (statsOnly.length > 0) {
+                noteStatsService.updateNoteStatsByEvents(statsOnly, undefined)
+              }
+              if (!changed) {
+                return timelineMergeBootstrapRef.current !== null ? base : oldEvents
+              }
+              lastEventsForTimelinePrefetchRef.current = base
+              return base
+            })
+          }
+
+          if (pendingBatch.length > 0) {
+            setNewEvents((oldEvents) => {
+              const pool: Event[] = [...eventsRef.current, ...oldEvents]
+              const statsOnly: Event[] = []
+              const kept: Event[] = []
+              for (const ev of pendingBatch) {
+                if (
+                  isNip18RepostKind(ev.kind) &&
+                  feedTimelineAlreadyRepresentsNip18Target(getNip18RepostTargetId(ev), pool)
+                ) {
+                  statsOnly.push(ev)
+                  continue
+                }
+                kept.push(ev)
+                pool.push(ev)
+              }
+              if (statsOnly.length > 0) {
+                noteStatsService.updateNoteStatsByEvents(statsOnly, undefined)
+              }
+              if (kept.length === 0) return oldEvents
+              return [...kept, ...oldEvents].sort((a, b) => b.created_at - a.created_at)
+            })
+          }
+        }
+
         const eventCapEarly = allowKindlessRelayExplore
           ? RELAY_EXPLORE_LIMIT
           : areAlgoRelays
@@ -3157,68 +3264,14 @@ const NoteList = forwardRef(
                 }
               }
               if (shouldHideEventRef.current(event)) return
-              if ((pubkey && event.pubkey === pubkey) || eventMatchesProfileTimelineRequest(event)) {
-                setEvents((oldEvents) => {
-                  const boot = timelineMergeBootstrapRef.current
-                  const base = boot !== null ? boot : oldEvents
-                  if (base.some((e) => e.id === event.id)) {
-                    return boot !== null ? base : oldEvents
-                  }
-                  if (
-                    isNip18RepostKind(event.kind) &&
-                    feedTimelineAlreadyRepresentsNip18Target(getNip18RepostTargetId(event), base)
-                  ) {
-                    noteStatsService.updateNoteStatsByEvents([event], undefined)
-                    return boot !== null ? base : oldEvents
-                  }
-                  if (boot !== null) {
-                    timelineMergeBootstrapRef.current = null
-                  }
-                  return [event, ...base]
-                })
-              } else if (hostPrimaryPageNameRef.current === 'feed') {
-                // Primary home relay feeds: merge live EVENTs into the timeline immediately. The generic path
-                // buffered everyone else's notes in `newEvents` until scroll-to-top — that felt like no streaming.
-                setEvents((oldEvents) => {
-                  const boot = timelineMergeBootstrapRef.current
-                  const base = boot !== null ? boot : oldEvents
-                  if (base.some((e) => e.id === event.id)) {
-                    return boot !== null ? base : oldEvents
-                  }
-                  if (
-                    isNip18RepostKind(event.kind) &&
-                    feedTimelineAlreadyRepresentsNip18Target(getNip18RepostTargetId(event), base)
-                  ) {
-                    noteStatsService.updateNoteStatsByEvents([event], undefined)
-                    return boot !== null ? base : oldEvents
-                  }
-                  if (boot !== null) {
-                    timelineMergeBootstrapRef.current = null
-                  }
-                  const cap = allowKindlessRelayExploreRef.current
-                    ? RELAY_EXPLORE_LIMIT
-                    : areAlgoRelays
-                      ? ALGO_LIMIT
-                      : LIMIT
-                  const next = collapseDuplicateNip18RepostTimelineRows(
-                    mergeEventBatchesById(base, [event], cap, areAlgoRelays)
-                  )
-                  lastEventsForTimelinePrefetchRef.current = next
-                  return next
-                })
-              } else {
-                setNewEvents((oldEvents) => {
-                  const pool = [...eventsRef.current, ...oldEvents]
-                  if (
-                    isNip18RepostKind(event.kind) &&
-                    feedTimelineAlreadyRepresentsNip18Target(getNip18RepostTargetId(event), pool)
-                  ) {
-                    noteStatsService.updateNoteStatsByEvents([event], undefined)
-                    return oldEvents
-                  }
-                  return [event, ...oldEvents].sort((a, b) => b.created_at - a.created_at)
-                })
-              }
+              const route: 'profile' | 'home' | 'pending' =
+                (pubkey && event.pubkey === pubkey) || eventMatchesProfileTimelineRequest(event)
+                  ? 'profile'
+                  : hostPrimaryPageNameRef.current === 'feed'
+                    ? 'home'
+                    : 'pending'
+              liveOnNewPendingRef.current.push({ event, route })
+              scheduleLiveOnNewFlush()
             },
           },
           {
@@ -3277,6 +3330,11 @@ const NoteList = forwardRef(
       const snapshotKeyForCleanup = sessionSnapshotIdentityKey
       return () => {
         effectActive = false
+        if (liveOnNewFlushTimerRef.current != null) {
+          clearTimeout(liveOnNewFlushTimerRef.current)
+          liveOnNewFlushTimerRef.current = null
+        }
+        liveOnNewPendingRef.current = []
         profileLocalPrimingPendingRef.current = false
         timelineMergeBootstrapRef.current = null
         setProgressiveLayersSearching(false)
@@ -3519,47 +3577,14 @@ const NoteList = forwardRef(
                   }
                 }
                 if (shouldHideEventRef.current(event)) return
-                if ((pubkey && event.pubkey === pubkey) || eventMatchesProfileDeltaRequest(event)) {
-                  setEvents((oldEvents) => {
-                    if (oldEvents.some((e) => e.id === event.id)) return oldEvents
-                    if (
-                      isNip18RepostKind(event.kind) &&
-                      feedTimelineAlreadyRepresentsNip18Target(getNip18RepostTargetId(event), oldEvents)
-                    ) {
-                      noteStatsService.updateNoteStatsByEvents([event], undefined)
-                      return oldEvents
-                    }
-                    return [event, ...oldEvents]
-                  })
-                } else if (hostPrimaryPageNameRef.current === 'feed') {
-                  setEvents((oldEvents) => {
-                    if (oldEvents.some((e) => e.id === event.id)) return oldEvents
-                    if (
-                      isNip18RepostKind(event.kind) &&
-                      feedTimelineAlreadyRepresentsNip18Target(getNip18RepostTargetId(event), oldEvents)
-                    ) {
-                      noteStatsService.updateNoteStatsByEvents([event], undefined)
-                      return oldEvents
-                    }
-                    const next = collapseDuplicateNip18RepostTimelineRows(
-                      mergeEventBatchesById(oldEvents, [event], eventCapDelta, areAlgoRelays)
-                    )
-                    lastEventsForTimelinePrefetchRef.current = next
-                    return next
-                  })
-                } else {
-                  setNewEvents((oldEvents) => {
-                    const pool = [...eventsRef.current, ...oldEvents]
-                    if (
-                      isNip18RepostKind(event.kind) &&
-                      feedTimelineAlreadyRepresentsNip18Target(getNip18RepostTargetId(event), pool)
-                    ) {
-                      noteStatsService.updateNoteStatsByEvents([event], undefined)
-                      return oldEvents
-                    }
-                    return [event, ...oldEvents].sort((a, b) => b.created_at - a.created_at)
-                  })
-                }
+                const route: 'profile' | 'home' | 'pending' =
+                  (pubkey && event.pubkey === pubkey) || eventMatchesProfileDeltaRequest(event)
+                    ? 'profile'
+                    : hostPrimaryPageNameRef.current === 'feed'
+                      ? 'home'
+                      : 'pending'
+                liveOnNewPendingRef.current.push({ event, route })
+                scheduleLiveOnNewFlush()
               }
             },
             {
@@ -4536,7 +4561,8 @@ const NoteList = forwardRef(
       const reqs = subRequestsRef.current.filter((req) => req.reasonLabel && req.reasonLabel.trim().length > 0)
       if (!reqs.length || !clientFilteredEvents.length) return new Map<string, string>()
       const map = new Map<string, string>()
-      for (const event of clientFilteredEvents) {
+      const labelEvents = clientFilteredEvents.slice(0, Math.min(showCount + 24, clientFilteredEvents.length))
+      for (const event of labelEvents) {
         const labels: string[] = []
         for (const req of reqs) {
           if (!eventMatchesSubRequestFilter(event, req.filter as Filter)) continue
@@ -4554,7 +4580,7 @@ const NoteList = forwardRef(
         }
       }
       return map
-    }, [clientFilteredEvents, subRequestsKey, feedReasonLabelsTick])
+    }, [clientFilteredEvents, subRequestsKey, feedReasonLabelsTick, showCount])
 
     const list = (
       <div className="min-h-0 w-full">
@@ -4585,6 +4611,7 @@ const NoteList = forwardRef(
               bottomNoteLabel={eventReasonLabelMap.get(event.id)}
               deferAuthorAvatar
               seenOnAllowlist={homeFeedActiveSeenOnAllowlist}
+              showPaymentAttestationAction={showPaymentAttestationAction}
             />
           ))
         )}

src/components/Sidebar/SidebarCalendarWeekWidget.tsx

@@ -28,7 +28,7 @@ import { CalendarEventCoverImage } from '@/components/CalendarEventCoverImage'
 import { Button } from '@/components/ui/button'
 
 /** Global calendar REQ: relays often cap; larger limit reduces “missing” older-published rows for this week. */
-const FETCH_LIMIT = 1200
+const FETCH_LIMIT = 400
 /** Supplementary `authors` REQ: community calls (e.g. Edufeed) may not appear in the global slice. */
 const FOLLOWING_CALENDAR_AUTHORS_CAP = 200
 const FOLLOWING_CALENDAR_AUTHORS_CHUNK = 80
@@ -37,7 +37,7 @@ const FOLLOWING_CALENDAR_CHUNK_LIMIT = 350
 const LIST_MAX_HEIGHT_PX = 240
 const SIDEBAR_CALENDAR_MAX_RELAYS = 24
 /** Merge session cache so events already loaded in feeds (but missed by this REQ) still appear. */
-const SESSION_CALENDAR_MERGE_CAP = 5000
+const SESSION_CALENDAR_MERGE_CAP = 1200
 
 export default function SidebarCalendarWeekWidget() {
   const { t } = useTranslation()

src/constants.ts

@@ -945,7 +945,7 @@ export const PROFILE_FEED_KINDS = SUPPORTED_KINDS.filter(
 )
 
 /** REQ `limit` for profile page timelines (single feed; narrow with kind filter or 🔍 search). */
-export const PROFILE_TIMELINE_REQ_LIMIT = 500
+export const PROFILE_TIMELINE_REQ_LIMIT = 200
 
 /** Long-form, wiki, and publication index events for the profile "Articles and Publications" tab. */
 export const PROFILE_PUBLICATIONS_TAB_KINDS: readonly number[] = [

src/hooks/usePaymentAttestationStatus.tsx

@@ -1,11 +1,15 @@
 import { ExtendedKind } from '@/constants'
 import {
-  findPaymentAttestationForTarget,
   getPaymentAttestationTargetId,
   getSuperchatPaymentRecipientPubkey
 } from '@/lib/superchat'
+import {
+  loadPaymentAttestationLocal,
+  peekCachedPaymentAttestation,
+  refreshPaymentAttestationFromRelays,
+  rememberPaymentAttestationFromPublish
+} from '@/lib/payment-attestation-cache'
 import client from '@/services/client.service'
-import indexedDb from '@/services/indexed-db.service'
 import { Event as NostrEvent } from 'nostr-tools'
 import { useCallback, useEffect, useLayoutEffect, useMemo, useState } from 'react'
 
@@ -18,19 +22,7 @@ function attestationFilter(recipientPubkey: string, targetEventId: string) {
   }
 }
 
-function resolveAttestationMatch(
-  attestations: NostrEvent[],
-  targetEventId: string,
-  recipientPubkey: string
-): NostrEvent | undefined {
-  return findPaymentAttestationForTarget(attestations, targetEventId, recipientPubkey)
-}
-
 export function usePaymentAttestationStatus(targetEvent: NostrEvent | undefined) {
-  const [attested, setAttested] = useState(false)
-  const [attestationEvent, setAttestationEvent] = useState<NostrEvent | null>(null)
-  const [checking, setChecking] = useState(false)
-
   const recipientPubkey = targetEvent ? getSuperchatPaymentRecipientPubkey(targetEvent) : null
   const targetId = targetEvent?.id?.toLowerCase()
 
@@ -42,6 +34,18 @@ export function usePaymentAttestationStatus(targetEvent: NostrEvent | undefined)
     [targetEvent?.id, recipientPubkey]
   )
 
+  const cached = useMemo(
+    () =>
+      targetEvent?.id && recipientPubkey
+        ? peekCachedPaymentAttestation(targetEvent.id, recipientPubkey)
+        : undefined,
+    [targetEvent?.id, recipientPubkey, targetId]
+  )
+
+  const [attested, setAttested] = useState(Boolean(cached))
+  const [attestationEvent, setAttestationEvent] = useState<NostrEvent | null>(cached ?? null)
+  const [checking, setChecking] = useState(false)
+
   const applyMatch = useCallback((match: NostrEvent | undefined) => {
     if (!match) return
     setAttestationEvent(match)
@@ -55,19 +59,24 @@ export function usePaymentAttestationStatus(targetEvent: NostrEvent | undefined)
       if (attestation.pubkey.toLowerCase() !== recipientPubkey.toLowerCase()) return
       const attestedId = getPaymentAttestationTargetId(attestation)
       if (attestedId?.toLowerCase() !== targetEvent.id.toLowerCase()) return
+      rememberPaymentAttestationFromPublish(attestation)
       applyMatch(attestation)
     },
     [applyMatch, recipientPubkey, targetEvent?.id]
   )
 
   useLayoutEffect(() => {
-    setAttested(false)
-    setAttestationEvent(null)
-    if (!targetEvent?.id || !recipientPubkey || !filter) return
-
-    const sessionHits = client.eventService.getSessionEventsMatchingFilters([filter], 5)
-    applyMatch(resolveAttestationMatch(sessionHits, targetEvent.id, recipientPubkey))
-  }, [applyMatch, filter, recipientPubkey, targetEvent?.id])
+    if (!targetEvent?.id || !recipientPubkey) {
+      setAttested(false)
+      setAttestationEvent(null)
+      return
+    }
+    const hit = peekCachedPaymentAttestation(targetEvent.id, recipientPubkey)
+    if (hit) {
+      setAttestationEvent(hit)
+      setAttested(true)
+    }
+  }, [recipientPubkey, targetEvent?.id])
 
   useEffect(() => {
     if (!targetEvent?.id || !recipientPubkey || !filter) return
@@ -77,20 +86,18 @@ export function usePaymentAttestationStatus(targetEvent: NostrEvent | undefined)
 
     void (async () => {
       try {
-        const [idbAttestations, localFeedAttestations, relayAttestations] = await Promise.all([
-          indexedDb.getPaymentAttestationsForTargetEvent(targetEvent.id, 20),
-          client.getLocalFeedEvents([{ urls: [], filter }], { maxMatches: 5 }),
-          client.fetchEvents([], filter, {
-            cache: true,
-            eoseTimeout: 4000,
-            globalTimeout: 10_000
-          })
-        ])
-
+        const local = await loadPaymentAttestationLocal(targetEvent.id, recipientPubkey, filter)
         if (cancelled) return
-
-        const merged = [...idbAttestations, ...localFeedAttestations, ...relayAttestations]
-        applyMatch(resolveAttestationMatch(merged, targetEvent.id, recipientPubkey))
+        if (local) {
+          applyMatch(local)
+          return
+        }
+        const relay = await refreshPaymentAttestationFromRelays(
+          targetEvent.id,
+          recipientPubkey,
+          filter
+        )
+        if (!cancelled) applyMatch(relay)
       } catch {
         /* optional */
       } finally {

src/i18n/locales/en.ts

@@ -1368,7 +1368,7 @@ export default {
     "Submit Relay": "Submit Relay",
     Homepage: "Homepage",
     "Proof of Work (difficulty {{minPow}})": "Proof of Work (difficulty {{minPow}})",
-    "POW: difficulty {{difficulty}}": "POW: difficulty {{difficulty}}",
+    "POW {{difficulty}}": "POW {{difficulty}}",
     "via {{client}}": "via {{client}}",
     "Auto-load media": "Auto-load media",
     Always: "Always",

src/lib/payment-attestation-cache.ts

@@ -0,0 +1,95 @@
+import { ExtendedKind } from '@/constants'
+import { findPaymentAttestationForTarget } from '@/lib/superchat'
+import client from '@/services/client.service'
+import indexedDb from '@/services/indexed-db.service'
+import type { Event as NostrEvent, Filter } from 'nostr-tools'
+
+const attestationByTargetKey = new Map<string, NostrEvent>()
+const relayFetchByTargetKey = new Map<string, Promise<NostrEvent[]>>()
+
+export function paymentAttestationCacheKey(targetEventId: string, recipientPubkey: string): string {
+  return `${targetEventId.trim().toLowerCase()}:${recipientPubkey.trim().toLowerCase()}`
+}
+
+export function peekCachedPaymentAttestation(
+  targetEventId: string,
+  recipientPubkey: string
+): NostrEvent | undefined {
+  return attestationByTargetKey.get(paymentAttestationCacheKey(targetEventId, recipientPubkey))
+}
+
+export function rememberPaymentAttestation(
+  targetEventId: string,
+  recipientPubkey: string,
+  attestation: NostrEvent
+): void {
+  attestationByTargetKey.set(
+    paymentAttestationCacheKey(targetEventId, recipientPubkey),
+    attestation
+  )
+}
+
+export function resolvePaymentAttestationFromEvents(
+  events: NostrEvent[],
+  targetEventId: string,
+  recipientPubkey: string
+): NostrEvent | undefined {
+  const match = findPaymentAttestationForTarget(events, targetEventId, recipientPubkey)
+  if (match) {
+    rememberPaymentAttestation(targetEventId, recipientPubkey, match)
+  }
+  return match
+}
+
+export async function loadPaymentAttestationLocal(
+  targetEventId: string,
+  recipientPubkey: string,
+  filter: Filter
+): Promise<NostrEvent | undefined> {
+  const cached = peekCachedPaymentAttestation(targetEventId, recipientPubkey)
+  if (cached) return cached
+
+  const sessionHits = client.eventService.getSessionEventsMatchingFilters([filter], 5)
+  const fromSession = resolvePaymentAttestationFromEvents(sessionHits, targetEventId, recipientPubkey)
+  if (fromSession) return fromSession
+
+  const idbAttestations = await indexedDb.getPaymentAttestationsForTargetEvent(targetEventId, 20)
+  return resolvePaymentAttestationFromEvents(idbAttestations, targetEventId, recipientPubkey)
+}
+
+/** One coalesced relay refresh per payment target (shared by all visible superchat rows). */
+export async function refreshPaymentAttestationFromRelays(
+  targetEventId: string,
+  recipientPubkey: string,
+  filter: Filter
+): Promise<NostrEvent | undefined> {
+  const cached = peekCachedPaymentAttestation(targetEventId, recipientPubkey)
+  if (cached) return cached
+
+  const key = paymentAttestationCacheKey(targetEventId, recipientPubkey)
+  let inflight = relayFetchByTargetKey.get(key)
+  if (!inflight) {
+    inflight = client
+      .fetchEvents([], filter, {
+        cache: true,
+        eoseTimeout: 2500,
+        globalTimeout: 6000
+      })
+      .finally(() => {
+        if (relayFetchByTargetKey.get(key) === inflight) {
+          relayFetchByTargetKey.delete(key)
+        }
+      })
+    relayFetchByTargetKey.set(key, inflight)
+  }
+
+  const relayAttestations = await inflight
+  return resolvePaymentAttestationFromEvents(relayAttestations, targetEventId, recipientPubkey)
+}
+
+export function rememberPaymentAttestationFromPublish(attestation: NostrEvent): void {
+  if (attestation.kind !== ExtendedKind.PAYMENT_ATTESTATION) return
+  const targetId = attestation.tags.find(([name]) => name === 'e' || name === 'E')?.[1]?.trim().toLowerCase()
+  if (!targetId || !/^[0-9a-f]{64}$/.test(targetId)) return
+  rememberPaymentAttestation(targetId, attestation.pubkey, attestation)
+}

src/pages/primary/SpellsPage/index.tsx

@@ -1108,6 +1108,7 @@ const SpellsPage = forwardRef<TPageRef>(function SpellsPage(
                   hideUntrustedNotes={
                     selectedFauxSpell === 'notifications' ? hideUntrustedNotifications : false
                   }
+                  showPaymentAttestationAction={selectedFauxSpell === 'notifications'}
                 />
               </div>
             </>

src/providers/LiveActivitiesProvider.tsx

@@ -86,8 +86,8 @@ export function LiveActivitiesProvider({ children }: { children: React.ReactNode
       try {
         const events = await client.fetchEvents(
           urls,
-          { kinds: [...LIVE_ACTIVITY_KINDS], limit: 500 },
-          { eoseTimeout: 6000, globalTimeout: 14_000 }
+          { kinds: [...LIVE_ACTIVITY_KINDS], limit: 120 },
+          { eoseTimeout: 5000, globalTimeout: 10_000 }
         )
         const parentByAddress = await resolveParentSpacesForLiveActivities(events, urls, (u, f, o) =>
           client.fetchEvents(u, f, o)

src/services/client-query.service.ts

@@ -281,6 +281,27 @@ export class QueryService {
    * feed / prefetch / replaceable fetches yield to search and publish.
    */
   private backgroundInterruptController = new AbortController()
+  /** Coalesce identical read-only REQs (no per-event callback) for a few seconds. */
+  private queryInFlightByKey = new Map<string, Promise<NEvent[]>>()
+
+  private buildReadQueryDedupKey(
+    relayUrls: readonly string[],
+    filters: readonly Filter[],
+    opts?: { globalTimeout?: number; eoseTimeout?: number }
+  ): string {
+    const relays = relayUrls
+      .map((u) => normalizeUrl(u) || u.trim())
+      .filter(Boolean)
+      .sort()
+      .join('|')
+    const filterKey = JSON.stringify(
+      filters.map((filter) => {
+        const entries = Object.entries(filter).sort(([a], [b]) => a.localeCompare(b))
+        return Object.fromEntries(entries)
+      })
+    )
+    return `${relays}::${filterKey}::${opts?.globalTimeout ?? 0}::${opts?.eoseTimeout ?? 0}`
+  }
 
   /**
    * Best-effort: abort in-flight {@link query} calls that did not pass `foreground: true`, then reset the token so
@@ -493,7 +514,19 @@ export class QueryService {
 
     const foreground = options?.foreground === true
 
-    return await new Promise<NEvent[]>((resolve) => {
+    const dedupKey =
+      !onevent && !foreground && !immediateReturn && !options?.signal?.aborted
+        ? this.buildReadQueryDedupKey([...wsQueryUrls, ...httpRelayBases], sanitizedFilters, {
+            globalTimeout,
+            eoseTimeout
+          })
+        : null
+    if (dedupKey) {
+      const inflight = this.queryInFlightByKey.get(dedupKey)
+      if (inflight) return inflight
+    }
+
+    const resultPromise = new Promise<NEvent[]>((resolve) => {
       const events: NEvent[] = []
       const cancelAbortRegistrations: Array<() => void> = []
       const abortHttp = new AbortController()
@@ -767,6 +800,17 @@ export class QueryService {
 
       globalTimeoutId = setTimeout(() => resolveWithEvents(), globalTimeout)
     })
+
+    if (dedupKey) {
+      this.queryInFlightByKey.set(dedupKey, resultPromise)
+      void resultPromise.finally(() => {
+        if (this.queryInFlightByKey.get(dedupKey) === resultPromise) {
+          this.queryInFlightByKey.delete(dedupKey)
+        }
+      })
+    }
+
+    return resultPromise
   }
 
   /**