bug-fixes

src/PageManager.tsx

@@ -60,6 +60,7 @@ import {
   isProfileDetailPathname
 } from '@/lib/document-meta'
 import { normalizeUrl } from './lib/url'
+import { prefetchThreadContextForNavigation } from '@/lib/thread-context-local'
 import modalManager from './services/modal-manager.service'
 import { decodeRssArticlePathSegment, encodeRssArticlePathSegment } from '@/lib/rss-article'
 import { matchAppRoute } from './routes'
@@ -469,7 +470,7 @@ export function useSmartNoteNavigation() {
   const { isSmallScreen } = useScreenSize()
   const { current: currentPrimaryPage } = usePrimaryPage()
   
-  const navigateToNote = (url: string, event?: Event, relatedEvents?: Event[]) => {
+  const navigateToNote = async (url: string, event?: Event, relatedEvents?: Event[]) => {
     // Extract noteId from URL (handles both /notes/{id} and /{context}/notes/{id})
     const parsed = parseNoteUrl(url)
     if (!parsed) {
@@ -482,6 +483,12 @@ export function useSmartNoteNavigation() {
     if (event) {
       navigationEventStore.setEvent(event, noteId)
       client.addEventToCache(event)
+      await prefetchThreadContextForNavigation(event).then((prefetched) => {
+        for (const ev of prefetched) {
+          client.addEventToCache(ev)
+          navigationEventStore.setEvent(ev)
+        }
+      })
     }
     // Pre-cache related events (parent, root) and nostr embeds so NotePage avoids skeletons.
     if (relatedEvents?.length) {
@@ -542,7 +549,7 @@ export function useSmartNoteNavigationOptional() {
   const { isSmallScreen } = screenSize
   const { current: currentPrimaryPage } = primaryPage
 
-  const navigateToNote = (url: string, event?: Event, relatedEvents?: Event[]) => {
+  const navigateToNote = async (url: string, event?: Event, relatedEvents?: Event[]) => {
     const parsed = parseNoteUrl(url)
     if (!parsed) {
       logger.warn('navigateToNote (optional) ignored invalid note URL', { url })
@@ -553,6 +560,12 @@ export function useSmartNoteNavigationOptional() {
     if (event) {
       navigationEventStore.setEvent(event, noteId)
       client.addEventToCache(event)
+      await prefetchThreadContextForNavigation(event).then((prefetched) => {
+        for (const ev of prefetched) {
+          client.addEventToCache(ev)
+          navigationEventStore.setEvent(ev)
+        }
+      })
     }
     if (relatedEvents?.length) {
       for (const ev of relatedEvents) {

src/components/ReplyNoteList/index.tsx

@@ -67,6 +67,7 @@ import {
   backlinkRunSectionClass,
   buildVisibleBacklinkRows,
   EA_THREAD_TAIL_REFERENCE_KINDS,
+  collectDisplayedThreadReplies,
   fetchPaymentAttestationsForRecipient,
   hydrateThreadRepliesFromStats,
   isEaThreadTailBacklinkCandidate,
@@ -75,7 +76,9 @@ import {
   loadThreadRepliesFromLocalStores,
   mergeFetchedKind7ReactionsIntoRootNoteStats,
   moveReportsToEndPreserveOrder,
+  openNoteHexId,
   partitionAndSortBacklinkTail,
+  replyIsInSubtreeBelowOpenNote,
   replyFeedZapsFirst,
   replyIdPresentInRepliesMap,
   replyMatchesThreadForList,
@@ -138,32 +141,16 @@ function ReplyNoteList({
   }, [duplicateWebPreviewCleanedUrlHints, rootInfo])
 
   const replies: NEvent[] = useMemo(() => {
-    const replyIdSet = new Set<string>()
+    const replyEvents = collectDisplayedThreadReplies(
-    const replyEvents: NEvent[] = []
+      event,
-    const currentEventKey = isReplaceableEvent(event.kind)
+      rootInfo,
-      ? getReplaceableCoordinateFromEvent(event)
+      repliesMap,
-      : /^[0-9a-f]{64}$/i.test(event.id) ? event.id.toLowerCase() : event.id
+      isDiscussionRoot,
-    // For replaceable events, also check the event ID in case replies are stored there
+      mutePubkeySet,
-    const eventIdKey = /^[0-9a-f]{64}$/i.test(event.id) ? event.id.toLowerCase() : event.id
+      hideContentMentioningMutedUsers
-    let parentEventKeys = [currentEventKey]
+    )
-    if (isReplaceableEvent(event.kind) && currentEventKey !== eventIdKey) {
+    const replyIdSet = new Set(replyEvents.map((r) => r.id))
-      parentEventKeys.push(eventIdKey)
-    }
-    // Web article threads: kind 1111 replies use #i (URL) only — ReplyProvider keys them by canonical URL, not synthetic root id.
-    if (event.kind === ExtendedKind.RSS_THREAD_ROOT) {
-      const u = getArticleUrlFromCommentITags(event)
-      if (u) {
-        const canon = canonicalizeRssArticleUrl(u)
-        if (!parentEventKeys.includes(canon)) {
-          parentEventKeys = [canon, ...parentEventKeys]
-        }
-      }
-    }
 
-    
-    const processedEventIds = new Set<string>() // Prevent infinite loops
-    let iterationCount = 0
-    const MAX_ITERATIONS = 10 // Prevent infinite loops
     const threadWalkFromRepliesMap = new Map<string, NEvent>()
     for (const { events: bucket } of repliesMap.values()) {
       for (const e of bucket) {
@@ -171,47 +158,6 @@ function ReplyNoteList({
       }
     }
 
-    while (parentEventKeys.length > 0 && iterationCount < MAX_ITERATIONS) {
-      iterationCount++
-      const events = parentEventKeys.flatMap((id) => repliesMap.get(id)?.events || [])
-      
-      events.forEach((evt) => {
-        if (replyIdSet.has(evt.id)) return
-        if (isPollVoteKind(evt)) return
-        if (
-          shouldHideThreadResponseEvent(
-            evt,
-            mutePubkeySet,
-            hideContentMentioningMutedUsers
-          )
-        ) {
-          return
-        }
-        if (
-          rootInfo &&
-          !replyMatchesThreadForList(evt, event, rootInfo, isDiscussionRoot, threadWalkFromRepliesMap)
-        ) {
-          return
-        }
-
-        replyIdSet.add(evt.id)
-        replyEvents.push(evt)
-        threadWalkFromRepliesMap.set(evt.id.toLowerCase(), evt)
-      })
-
-      // Include reactions (and every other kind) so BFS can find notes keyed under reaction / zap ids.
-      const newParentEventKeys = events
-        .map((evt) => evt.id)
-        .filter((id) => !processedEventIds.has(id))
-      
-      newParentEventKeys.forEach((id) => processedEventIds.add(id))
-      parentEventKeys = newParentEventKeys
-    }
-    
-    if (iterationCount >= MAX_ITERATIONS) {
-      logger.warn('ReplyNoteList: Maximum iterations reached, possible circular reference in replies')
-    }
-
     const includeThreadReply = (evt: NEvent) => {
       if (isPollVoteKind(evt)) return false
       if (
@@ -225,6 +171,15 @@ function ReplyNoteList({
       ) {
         return false
       }
+      const opHex = openNoteHexId(event)
+      if (
+        opHex &&
+        rootInfo?.type === 'E' &&
+        rootInfo.id.trim().toLowerCase() !== opHex &&
+        !replyIsInSubtreeBelowOpenNote(evt, opHex, threadWalkFromRepliesMap)
+      ) {
+        return false
+      }
       return true
     }
 
@@ -236,7 +191,6 @@ function ReplyNoteList({
     )) {
       replyIdSet.add(evt.id)
       replyEvents.push(evt)
-      threadWalkFromRepliesMap.set(evt.id.toLowerCase(), evt)
     }
 
     const { superchats, rest: nonZaps } = partitionAttestedSuperchats(replyEvents, attestedPaymentIds)
@@ -638,7 +592,10 @@ function ReplyNoteList({
     const init = async () => {
       // Session LRU (timeline / note-stats / prior panels): thread replies before relay round-trip
       if (rootInfo.type === 'E' || rootInfo.type === 'A') {
-        const fromSession = eventService.getSessionThreadInteractionEvents(rootInfo)
+        const fromSession = eventService.getSessionThreadInteractionEvents(
+          rootInfo,
+          openNoteHexId(event)
+        )
         if (fromSession.length > 0) {
           addReplies(fromSession)
         }
@@ -726,6 +683,7 @@ function ReplyNoteList({
           const filters = buildThreadInteractionFilters({
             root: rootInfo,
             opEventKind: event.kind,
+            opEventHexId: openNoteHexId(event),
             limit: THREAD_REPLY_LIMIT
           })
 

src/components/ReplyNoteList/reply-list-utils.ts

@@ -1,7 +1,8 @@
 import { ExtendedKind, NOTE_STATS_OP_REFERENCE_KINDS } from '@/constants'
-import { isNip56ReportEvent, kind1QuotesThreadRoot } from '@/lib/event'
+import { getParentEventHexId, isNip56ReportEvent, kind1QuotesThreadRoot } from '@/lib/event'
 import { isSuperchatKind, replyFeedSuperchatsFirst } from '@/lib/superchat'
 import { eventReferencesThreadTarget } from '@/lib/op-reference-tags'
+import type { TRepliesMap } from '@/lib/reply-index'
 import { replyBelongsToNoteThread } from '@/lib/thread-reply-root-match'
 import { isRssArticleUrlThreadInteraction } from '@/lib/rss-web-feed'
 import { shouldHideThreadResponseEvent } from '@/lib/thread-response-filter'
@@ -24,6 +25,101 @@ export {
   THREAD_PROFILE_CHUNK
 } from './types'
 
+export function openNoteHexId(event: Pick<NEvent, 'id'>): string | undefined {
+  const id = event.id?.trim().toLowerCase()
+  return id && /^[0-9a-f]{64}$/.test(id) ? id : undefined
+}
+
+/** Whether `evt` is a direct or nested reply under the opened note (not a sibling branch). */
+export function replyIsInSubtreeBelowOpenNote(
+  evt: NEvent,
+  opHexLower: string,
+  threadWalk: ReadonlyMap<string, NEvent>
+): boolean {
+  let cur: string | undefined = getParentEventHexId(evt)?.toLowerCase()
+  if (!cur) return false
+  if (cur === opHexLower) return true
+  const seen = new Set<string>()
+  for (let hop = 0; hop < 14 && cur; hop++) {
+    if (seen.has(cur)) return false
+    seen.add(cur)
+    if (cur === opHexLower) return true
+    const parentEv: NEvent | undefined =
+      threadWalk.get(cur) ?? client.peekSessionCachedEvent(cur)
+    if (!parentEv) return false
+    cur = getParentEventHexId(parentEv)?.toLowerCase()
+  }
+  return false
+}
+
+function dedupeEventsFromRepliesMap(repliesMap: TRepliesMap): NEvent[] {
+  const byId = new Map<string, NEvent>()
+  for (const { events } of repliesMap.values()) {
+    for (const evt of events) {
+      byId.set(evt.id, evt)
+    }
+  }
+  return [...byId.values()]
+}
+
+/** Replies to show under “Antworten” for the opened note (direct + nested, not sibling branches). */
+export function collectDisplayedThreadReplies(
+  opEvent: NEvent,
+  rootInfo: TRootInfo | undefined,
+  repliesMap: TRepliesMap,
+  isDiscussionRoot: boolean,
+  mutePubkeySet: Set<string>,
+  hideContentMentioningMutedUsers: boolean | undefined
+): NEvent[] {
+  const threadWalk = new Map<string, NEvent>()
+  for (const evt of dedupeEventsFromRepliesMap(repliesMap)) {
+    threadWalk.set(evt.id.toLowerCase(), evt)
+  }
+
+  if (rootInfo?.type === 'I') {
+    const opHex = openNoteHexId(opEvent)
+    const out: NEvent[] = []
+    const seen = new Set<string>()
+    for (const evt of threadWalk.values()) {
+      if (seen.has(evt.id)) continue
+      if (isPollVoteKind(evt)) continue
+      if (shouldHideThreadResponseEvent(evt, mutePubkeySet, hideContentMentioningMutedUsers)) continue
+      if (!isRssArticleUrlThreadInteraction(evt, rootInfo.id)) continue
+      if (
+        opHex &&
+        opEvent.kind !== ExtendedKind.RSS_THREAD_ROOT &&
+        !replyIsInSubtreeBelowOpenNote(evt, opHex, threadWalk)
+      ) {
+        continue
+      }
+      seen.add(evt.id)
+      out.push(evt)
+    }
+    return out
+  }
+
+  const opHex = openNoteHexId(opEvent)
+  if (!opHex) return []
+
+  const isThreadRootView =
+    rootInfo?.type === 'E' && rootInfo.id.trim().toLowerCase() === opHex
+
+  const out: NEvent[] = []
+  const seen = new Set<string>()
+  for (const evt of threadWalk.values()) {
+    if (seen.has(evt.id)) continue
+    if (isPollVoteKind(evt)) continue
+    if (shouldHideThreadResponseEvent(evt, mutePubkeySet, hideContentMentioningMutedUsers)) continue
+    if (rootInfo && !replyMatchesThreadForList(evt, opEvent, rootInfo, isDiscussionRoot, threadWalk)) {
+      continue
+    }
+    if (!isThreadRootView && !replyIsInSubtreeBelowOpenNote(evt, opHex, threadWalk)) continue
+    seen.add(evt.id)
+    out.push(evt)
+  }
+  return out
+}
+
 /** Session LRU + publication store + archive: paint thread replies before relay round-trip. */
 export async function loadThreadRepliesFromLocalStores(
   rootInfo: TRootInfo,
@@ -35,6 +131,7 @@ export async function loadThreadRepliesFromLocalStores(
   const filters = buildThreadInteractionFilters({
     root: rootInfo,
     opEventKind: opEvent.kind,
+    opEventHexId: openNoteHexId(opEvent),
     limit: THREAD_REPLY_LIMIT
   })
   if (!filters.length) return []

src/hooks/useFetchThreadContextEvent.tsx

@@ -1,14 +1,14 @@
 import { THREAD_CONTEXT_EVENT_FETCH_GLOBAL_TIMEOUT_MS } from '@/constants'
 import { getAggrAwareSearchRelayUrls } from '@/lib/nostr-land-relay-eligibility'
 import { sanitizeRelayUrlsForFetch } from '@/lib/read-only-relay-personal'
+import { resolveThreadContextEventFromLocalStores } from '@/lib/thread-context-local'
 import { useFavoriteRelays } from '@/providers/FavoriteRelaysProvider'
 import { useIsEventDeleted } from '@/providers/DeletedEventProvider'
 import { useNostr } from '@/providers/NostrProvider'
 import { useReplyIngress } from '@/hooks/useReplyIngress'
-import { getNoteBech32Id, getParentETag, getRootETag } from '@/lib/event'
+import { getParentETag, getRootETag } from '@/lib/event'
 import { buildThreadContextFetchRelayUrls } from '@/lib/thread-context-relays'
 import client, { eventService } from '@/services/client.service'
-import { navigationEventStore } from '@/services/navigation-event-store'
 import { Event } from 'nostr-tools'
 import { useCallback, useEffect, useMemo, useState } from 'react'
 
@@ -83,44 +83,22 @@ export function useFetchThreadContextEvent(
 
     const skipShortcuts = refetchToken > 0
 
-    const initialMatches =
+    void (async () => {
-      initialEvent &&
+      if (!skipShortcuts) {
-      (initialEvent.id === eventId ||
+        const local = await resolveThreadContextEventFromLocalStores(eventId, initialEvent)
-        (() => {
+        if (cancelled) return
-          try {
+        if (local && !isEventDeleted(local)) {
-            return getNoteBech32Id(initialEvent) === eventId
+          setEvent(local)
-          } catch {
+          addReplies([local])
-            return false
+          setIsFetching(false)
-          }
+          return
-        })())
-    if (!skipShortcuts && initialMatches && initialEvent) {
-      if (!isEventDeleted(initialEvent)) {
-        setEvent(initialEvent)
-        addReplies([initialEvent])
-        setIsFetching(false)
-      }
-      return () => {
-        cancelled = true
-      }
-    }
-
-    if (!skipShortcuts) {
-      const navigationEvent = navigationEventStore.peekEvent(eventId)
-      if (navigationEvent && !isEventDeleted(navigationEvent)) {
-        setEvent(navigationEvent)
-        addReplies([navigationEvent])
-        setIsFetching(false)
-        return () => {
-          cancelled = true
         }
       }
-    }
 
-    setEvent(undefined)
+      setEvent(undefined)
-    setError(null)
+      setError(null)
-    setIsFetching(true)
+      setIsFetching(true)
 
-    const fetchWithFallback = async () => {
       try {
         const relayUrls = await buildThreadContextFetchRelayUrls(
           contextEvent,
@@ -171,9 +149,7 @@ export function useFetchThreadContextEvent(
           setIsFetching(false)
         }
       }
-    }
+    })()
-
-    void fetchWithFallback()
 
     return () => {
       cancelled = true

src/lib/navigation-related-events.ts

@@ -1,7 +1,9 @@
 import { getParentBech32Id, getRootBech32Id } from '@/lib/event'
 import { toNote } from '@/lib/link'
+import { prefetchThreadContextForNavigation } from '@/lib/thread-context-local'
 import client from '@/services/client.service'
 import type { Event } from 'nostr-tools'
+import { navigationEventStore } from '@/services/navigation-event-store'
 
 /**
  * Parent / root events already in the session cache (e.g. from {@link ParentNotePreview} or the feed).
@@ -29,15 +31,26 @@ export function resolveCachedNoteEvent(fetched: Event | undefined, noteId?: stri
   return client.peekSessionCachedEvent(noteId.trim())
 }
 
-export function openNoteFromFetchOrCache(
+export async function openNoteFromFetchOrCache(
   navigateToNote: NavigateToNoteFn,
   noteId: string,
   fetched?: Event
-): void {
+): Promise<void> {
   const resolved = resolveCachedNoteEvent(fetched, noteId)
   if (resolved) {
+    await seedThreadContextForNavigation(resolved)
     navigateToNote(toNote(resolved), resolved, getCachedThreadContextEvents(resolved))
     return
   }
   navigateToNote(toNote(noteId))
 }
+
+/** Seed navigation store with parent/root from disk before the note panel mounts. */
+export async function seedThreadContextForNavigation(event: Event): Promise<Event[]> {
+  const prefetched = await prefetchThreadContextForNavigation(event)
+  for (const ev of prefetched) {
+    client.addEventToCache(ev)
+    navigationEventStore.setEvent(ev)
+  }
+  return prefetched
+}

src/lib/thread-context-local.ts

@@ -0,0 +1,100 @@
+import {
+  getNoteBech32Id,
+  getParentBech32Id,
+  getParentEventHexId,
+  getRootBech32Id,
+  getRootEventHexId,
+  resolveDeclaredThreadRootEventHex
+} from '@/lib/event'
+import { shouldDropEventOnIngest } from '@/lib/event-ingest-filter'
+import client, { eventService } from '@/services/client.service'
+import { loadArchivedEventForFetch } from '@/services/event-archive.service'
+import { candidateKeysForNoteUrlId } from '@/services/navigation-event-store'
+import { navigationEventStore } from '@/services/navigation-event-store'
+import type { Event } from 'nostr-tools'
+
+export function resolveEventPointerToHex(eventId: string): string | undefined {
+  const trimmed = eventId.trim()
+  if (/^[0-9a-f]{64}$/i.test(trimmed)) return trimmed.toLowerCase()
+  for (const key of candidateKeysForNoteUrlId(trimmed)) {
+    if (/^[0-9a-f]{64}$/i.test(key)) return key.toLowerCase()
+  }
+  return undefined
+}
+
+function eventMatchesPointer(ev: Event, eventId: string): boolean {
+  if (ev.id === eventId) return true
+  try {
+    return getNoteBech32Id(ev) === eventId
+  } catch {
+    return false
+  }
+}
+
+/** Session, navigation store, archive, publication store, and timeline disk — for parent/root strips. */
+export async function resolveThreadContextEventFromLocalStores(
+  eventId: string,
+  initialEvent?: Event
+): Promise<Event | undefined> {
+  if (initialEvent && eventMatchesPointer(initialEvent, eventId)) {
+    return initialEvent
+  }
+
+  const fromNav = navigationEventStore.peekEvent(eventId)
+  if (fromNav) return fromNav
+
+  const fromSession = client.peekSessionCachedEvent(eventId)
+  if (fromSession) return fromSession
+
+  const hex = resolveEventPointerToHex(eventId)
+  if (!hex) return undefined
+
+  const fromArchive = await loadArchivedEventForFetch(hex)
+  if (fromArchive && !shouldDropEventOnIngest(fromArchive, { explicitNoteLookupHexId: hex })) {
+    client.addEventToCache(fromArchive, { explicitNoteLookupHexId: hex })
+    return fromArchive
+  }
+
+  const fromPublication = await eventService.peekPublicationStoreEvent(hex)
+  if (fromPublication) return fromPublication
+
+  const rows = await client.getLocalFeedEvents(
+    [{ urls: [], filter: { ids: [hex], limit: 1 } }],
+    { maxMatches: 1, maxRowsScanned: 14_000 }
+  )
+  const hit = rows[0]
+  if (hit && !shouldDropEventOnIngest(hit, { explicitNoteLookupHexId: hex })) {
+    client.addEventToCache(hit, { explicitNoteLookupHexId: hex })
+    return hit
+  }
+
+  return undefined
+}
+
+/** Parent + root events from local stores before opening a note panel (avoids thread strip skeletons). */
+export async function prefetchThreadContextForNavigation(forEvent: Event): Promise<Event[]> {
+  const pointers = new Set<string>()
+  const parentId = getParentBech32Id(forEvent)
+  const rootId = getRootBech32Id(forEvent)
+  if (parentId) pointers.add(parentId)
+  if (rootId) pointers.add(rootId)
+
+  const parentHex = getParentEventHexId(forEvent)?.toLowerCase()
+  const rootHex = getRootEventHexId(forEvent)?.toLowerCase()
+  if (parentHex && /^[0-9a-f]{64}$/i.test(parentHex)) pointers.add(parentHex)
+  if (rootHex && /^[0-9a-f]{64}$/i.test(rootHex)) {
+    pointers.add(resolveDeclaredThreadRootEventHex(rootHex))
+  }
+
+  pointers.delete(forEvent.id.toLowerCase())
+
+  const out: Event[] = []
+  const seen = new Set<string>()
+  for (const pointer of pointers) {
+    const ev = await resolveThreadContextEventFromLocalStores(pointer)
+    if (!ev || seen.has(ev.id.toLowerCase())) continue
+    seen.add(ev.id.toLowerCase())
+    out.push(ev)
+  }
+  return out
+}

src/lib/thread-interaction-req.test.ts

@@ -47,4 +47,15 @@ describe('buildThreadInteractionFilters', () => {
     expect(filters.some((f) => f['#e']?.[0] === SNAP_HEX)).toBe(true)
     expect(filters.some((f) => f['#a']?.length === 1)).toBe(true)
   })
+
+  it('adds open-note #e filters when viewing a mid-thread reply', () => {
+    const opHex = 'd'.repeat(64)
+    const filters = buildThreadInteractionFilters({
+      root: { type: 'E', id: ROOT_HEX, pubkey: 'c'.repeat(64) },
+      opEventKind: kinds.ShortTextNote,
+      opEventHexId: opHex,
+      limit: 100
+    })
+    expect(filters.some((f) => f['#e']?.[0] === opHex)).toBe(true)
+  })
 })

src/lib/thread-interaction-req.ts

@@ -21,6 +21,26 @@ export type BuildThreadInteractionFiltersInput = {
   /** Kind of the note/article the user opened (affects zap inclusion). */
   opEventKind: number
   limit: number
+  /** Hex id of the note the user opened — also REQ `#e` when it is not the thread root. */
+  opEventHexId?: string
+}
+
+function appendOpenNoteScopedEventFilters(
+  filters: Filter[],
+  opEventHexId: string | undefined,
+  rootHexIds: readonly string[],
+  kindsOnETag: number[],
+  kindsOnUpperETag: number[],
+  kindsOnQTag: number[],
+  limit: number
+): void {
+  const opHex = opEventHexId?.trim().toLowerCase()
+  if (!opHex || !/^[0-9a-f]{64}$/.test(opHex)) return
+  const rootSet = new Set(rootHexIds.map((id) => id.trim().toLowerCase()).filter(Boolean))
+  if (rootSet.has(opHex)) return
+  filters.push({ '#e': [opHex], kinds: kindsOnETag, limit })
+  filters.push({ '#E': [opHex], kinds: kindsOnUpperETag, limit })
+  filters.push({ '#q': [opHex], kinds: kindsOnQTag, limit })
 }
 
 /**
@@ -28,7 +48,7 @@ export type BuildThreadInteractionFiltersInput = {
  * Client code classifies replies vs backlinks; {@link QueryService} splits only when over relay caps.
  */
 export function buildThreadInteractionFilters(input: BuildThreadInteractionFiltersInput): Filter[] {
-  const { root, opEventKind, limit } = input
+  const { root, opEventKind, limit, opEventHexId } = input
 
   const kindsNoteCommentVoiceZap = sortedUniqueKinds([
     kinds.ShortTextNote,
@@ -70,19 +90,31 @@ export function buildThreadInteractionFilters(input: BuildThreadInteractionFilte
   const filters: Filter[] = []
 
   if (root.type === 'E') {
-    filters.push({ '#e': [root.id], kinds: kindsOnETag, limit })
+    const rootHex = root.id.trim().toLowerCase()
-    filters.push({ '#E': [root.id], kinds: kindsOnUpperETag, limit })
+    filters.push({ '#e': [rootHex], kinds: kindsOnETag, limit })
-    filters.push({ '#q': [root.id], kinds: kindsOnQTag, limit })
+    filters.push({ '#E': [rootHex], kinds: kindsOnUpperETag, limit })
+    filters.push({ '#q': [rootHex], kinds: kindsOnQTag, limit })
     if (opEventKind === ExtendedKind.PUBLIC_MESSAGE) {
-      filters.push({ '#q': [root.id], kinds: [ExtendedKind.PUBLIC_MESSAGE], limit })
+      filters.push({ '#q': [rootHex], kinds: [ExtendedKind.PUBLIC_MESSAGE], limit })
     }
+    appendOpenNoteScopedEventFilters(
+      filters,
+      opEventHexId,
+      [rootHex],
+      kindsOnETag,
+      kindsOnUpperETag,
+      kindsOnQTag,
+      limit
+    )
     return filters
   }
 
   filters.push({ '#a': [root.id], kinds: kindsOnETag, limit })
   filters.push({ '#A': [root.id], kinds: kindsOnUpperETag, limit })
+  const rootHexIds: string[] = []
   if (/^[0-9a-f]{64}$/i.test(root.eventId)) {
     const eSnap = root.eventId.trim().toLowerCase()
+    rootHexIds.push(eSnap)
     filters.push({ '#e': [eSnap], kinds: kindsOnETag, limit })
     filters.push({ '#E': [eSnap], kinds: kindsOnUpperETag, limit })
   }
@@ -92,6 +124,15 @@ export function buildThreadInteractionFilters(input: BuildThreadInteractionFilte
   if (qVals.length > 0) {
     filters.push({ '#q': qVals, kinds: kindsOnQTag, limit })
   }
+  appendOpenNoteScopedEventFilters(
+    filters,
+    opEventHexId,
+    rootHexIds,
+    kindsOnETag,
+    kindsOnUpperETag,
+    kindsOnQTag,
+    limit
+  )
   return filters
 }
 

src/services/client-events.service.ts

@@ -1089,11 +1089,16 @@ export class EventService {
    * found by BFS over e/E/q and (for `a`-root threads) a-tag links. Merges with relay fetches via ReplyProvider.
    */
   getSessionThreadInteractionEvents(
-    root: { type: 'E'; id: string } | { type: 'A'; id: string; eventId: string } | { type: 'I'; id: string }
+    root: { type: 'E'; id: string } | { type: 'A'; id: string; eventId: string } | { type: 'I'; id: string },
+    openNoteHexId?: string
   ): NEvent[] {
     if (root.type === 'I') return []
 
     const threadKeys = new Set<string>()
+    const openHex = openNoteHexId?.trim().toLowerCase()
+    if (openHex && /^[0-9a-f]{64}$/.test(openHex)) {
+      threadKeys.add(openHex)
+    }
     if (root.type === 'E') {
       const id = root.id.trim().toLowerCase()
       if (!/^[0-9a-f]{64}$/.test(id)) return []