feat: audio rooms drawer listing (NIP-53 kind 30312)

Adds a new "Audio Rooms" entry in the drawer feeds section that lists
NIP-53 kind 30312 (Interactive Rooms / audio spaces) events, mirroring
the existing Live Streams architecture.

- AudioRoomsFeedFilter narrows LocalCache.liveChatChannels to
  MeetingSpaceEvent (30312) and MeetingRoomEvent (30313), sorting by
  OPEN > PRIVATE > CLOSED then by follow participation.
- AudioRoomsFilterAssembler/SubAssembler reuse makeLiveActivitiesFilter
  so the wire-level REQs are shared with the Live Streams screen.
- AudioRoomsScreen/TopBar/FeedLoaded follow the Live Streams layout and
  render via ChannelCardCompose.

This is phase 1 of the Clubhouse/nests integration plan: it only adds
the discovery surface. Joining, presence, audio transport (MoQ) and
room creation will arrive in subsequent PRs.

https://claude.ai/code/session_013nVLALALKaHVgHm9u5Cg8D

amethyst/src/main/java/com/vitorpamplona/amethyst/service/relayClient/reqCommand/RelaySubscriptionsCoordinator.kt

@@ -28,6 +28,7 @@ import com.vitorpamplona.amethyst.service.relayClient.reqCommand.nwc.NWCPaymentF
 import com.vitorpamplona.amethyst.service.relayClient.reqCommand.user.UserFinderFilterAssembler
 import com.vitorpamplona.amethyst.service.relayClient.searchCommand.SearchFilterAssembler
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.articles.datasource.ArticlesFilterAssembler
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms.datasource.AudioRoomsFilterAssembler
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.badges.datasource.BadgesFilterAssembler
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.badges.profile.datasource.ProfileBadgesFilterAssembler
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.privateDM.datasource.ChatroomFilterAssembler
@@ -105,6 +106,7 @@ class RelaySubscriptionsCoordinator(
     val shorts = ShortsFilterAssembler(client)
     val publicChats = PublicChatsFilterAssembler(client)
     val liveStreams = LiveStreamsFilterAssembler(client)
+    val audioRooms = AudioRoomsFilterAssembler(client)
     val longs = LongsFilterAssembler(client)
     val articles = ArticlesFilterAssembler(client)
     val badges = BadgesFilterAssembler(client)
@@ -129,6 +131,7 @@ class RelaySubscriptionsCoordinator(
             publicChats,
             followPacksList,
             liveStreams,
+            audioRooms,
             longs,
             articles,
             badges,

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/feeds/RememberForeverStates.kt

@@ -67,6 +67,7 @@ object ScrollStateKeys {
     const val PUBLIC_CHATS_SCREEN = "PublicChatsFeed"
     const val FOLLOW_PACKS_SCREEN = "FollowPacksFeed"
     const val LIVE_STREAMS_SCREEN = "LiveStreamsFeed"
+    const val AUDIO_ROOMS_SCREEN = "AudioRoomsFeed"
     const val LONGS_SCREEN = "LongsFeed"
     const val ARTICLES_SCREEN = "ArticlesFeed"
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/AppNavigation.kt

@@ -64,6 +64,7 @@ import com.vitorpamplona.amethyst.ui.screen.AccountSessionManager
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountSwitcherAndLeftDrawerLayout
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.articles.ArticlesScreen
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms.AudioRoomsScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.badges.BadgesScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.badges.award.AwardBadgeScreen
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.badges.profile.ProfileBadgesScreen
@@ -246,6 +247,7 @@ fun BuildNavigation(
         composableFromEnd<Route.PublicChats> { PublicChatsScreen(accountViewModel, nav) }
         composableFromEnd<Route.FollowPacks> { FollowPacksScreen(accountViewModel, nav) }
         composableFromEnd<Route.LiveStreams> { LiveStreamsScreen(accountViewModel, nav) }
+        composableFromEnd<Route.AudioRooms> { AudioRoomsScreen(accountViewModel, nav) }
         composableFromEnd<Route.Longs> { LongsScreen(accountViewModel, nav) }
         composableFromEnd<Route.Articles> { ArticlesScreen(accountViewModel, nav) }
         composableFromEnd<Route.NewHlsVideo> { NewHlsVideoScreen(accountViewModel, nav) }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/bottombars/NavBarItem.kt

@@ -32,6 +32,7 @@ import androidx.compose.material.icons.outlined.Drafts
 import androidx.compose.material.icons.outlined.EmojiEmotions
 import androidx.compose.material.icons.outlined.Groups
 import androidx.compose.material.icons.outlined.Language
+import androidx.compose.material.icons.outlined.Mic
 import androidx.compose.material.icons.outlined.MilitaryTech
 import androidx.compose.material.icons.outlined.Photo
 import androidx.compose.material.icons.outlined.PlayCircle
@@ -72,6 +73,7 @@ enum class NavBarItem {
     PUBLIC_CHATS,
     FOLLOW_PACKS,
     LIVE_STREAMS,
+    AUDIO_ROOMS,
     LONGS,
     POLLS,
     BADGES,
@@ -240,6 +242,13 @@ val NavBarCatalog: Map<NavBarItem, NavBarItemDef> =
                 icon = NavBarIcon.Vector(Icons.Outlined.Sensors),
                 resolveRoute = { Route.LiveStreams },
             ),
+        NavBarItem.AUDIO_ROOMS to
+            NavBarItemDef(
+                id = NavBarItem.AUDIO_ROOMS,
+                labelRes = R.string.audio_rooms,
+                icon = NavBarIcon.Vector(Icons.Outlined.Mic),
+                resolveRoute = { Route.AudioRooms },
+            ),
         NavBarItem.LONGS to
             NavBarItemDef(
                 id = NavBarItem.LONGS,
@@ -326,6 +335,7 @@ val DrawerFeedsItems: List<NavBarItem> =
         NavBarItem.PUBLIC_CHATS,
         NavBarItem.FOLLOW_PACKS,
         NavBarItem.LIVE_STREAMS,
+        NavBarItem.AUDIO_ROOMS,
         NavBarItem.LONGS,
         NavBarItem.POLLS,
         NavBarItem.BADGES,

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/navigation/routes/Routes.kt

@@ -89,6 +89,8 @@ sealed class Route {
 
     @Serializable object LiveStreams : Route()
 
+    @Serializable object AudioRooms : Route()
+
     @Serializable object Longs : Route()
 
     @Serializable object Articles : Route()

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/AccountFeedContentStates.kt

@@ -28,6 +28,7 @@ import com.vitorpamplona.amethyst.service.checkNotInMainThread
 import com.vitorpamplona.amethyst.ui.feeds.ChannelFeedContentState
 import com.vitorpamplona.amethyst.ui.screen.TopNavFilterState
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.articles.dal.ArticlesFeedFilter
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms.dal.AudioRoomsFeedFilter
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.badges.dal.BadgesFeedFilter
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.rooms.dal.ChatroomListKnownFeedFilter
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.rooms.dal.ChatroomListNewFeedFilter
@@ -100,6 +101,7 @@ class AccountFeedContentStates(
     val publicChatsFeed = FeedContentState(PublicChatsFeedFilter(account), scope, LocalCache)
     val followPacksFeed = FeedContentState(FollowPacksFeedFilter(account), scope, LocalCache)
     val liveStreamsFeed = FeedContentState(LiveStreamsFeedFilter(account), scope, LocalCache)
+    val audioRoomsFeed = FeedContentState(AudioRoomsFeedFilter(account), scope, LocalCache)
     val longsFeed = FeedContentState(LongsFeedFilter(account), scope, LocalCache)
     val articlesFeed = FeedContentState(ArticlesFeedFilter(account), scope, LocalCache)
 
@@ -165,6 +167,7 @@ class AccountFeedContentStates(
         publicChatsFeed.updateFeedWith(newNotes)
         followPacksFeed.updateFeedWith(newNotes)
         liveStreamsFeed.updateFeedWith(newNotes)
+        audioRoomsFeed.updateFeedWith(newNotes)
         longsFeed.updateFeedWith(newNotes)
         articlesFeed.updateFeedWith(newNotes)
 
@@ -211,6 +214,7 @@ class AccountFeedContentStates(
         publicChatsFeed.deleteFromFeed(newNotes)
         followPacksFeed.deleteFromFeed(newNotes)
         liveStreamsFeed.deleteFromFeed(newNotes)
+        audioRoomsFeed.deleteFromFeed(newNotes)
         longsFeed.deleteFromFeed(newNotes)
         articlesFeed.deleteFromFeed(newNotes)
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/audiorooms/AudioRoomsFeedLoaded.kt

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms
+
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.LazyListState
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.material3.HorizontalDivider
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.vitorpamplona.amethyst.commons.ui.feeds.FeedState
+import com.vitorpamplona.amethyst.ui.layouts.rememberFeedContentPadding
+import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.discover.ChannelCardCompose
+import com.vitorpamplona.amethyst.ui.theme.DividerThickness
+import com.vitorpamplona.amethyst.ui.theme.FeedPadding
+import com.vitorpamplona.quartz.nip53LiveActivities.meetingSpaces.MeetingSpaceEvent
+
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+fun AudioRoomsFeedLoaded(
+    loaded: FeedState.Loaded,
+    listState: LazyListState,
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    val items by loaded.feed.collectAsStateWithLifecycle()
+
+    LazyColumn(
+        contentPadding = rememberFeedContentPadding(FeedPadding),
+        state = listState,
+    ) {
+        itemsIndexed(items.list, key = { _, item -> item.idHex }) { _, item ->
+            Row(Modifier.fillMaxWidth().animateItem()) {
+                ChannelCardCompose(
+                    baseNote = item,
+                    routeForLastRead = "AudioRoomsFeed",
+                    modifier = Modifier.fillMaxWidth(),
+                    forceEventKind = MeetingSpaceEvent.KIND,
+                    accountViewModel = accountViewModel,
+                    nav = nav,
+                )
+            }
+
+            HorizontalDivider(
+                thickness = DividerThickness,
+            )
+        }
+    }
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/audiorooms/AudioRoomsScreen.kt

@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.vitorpamplona.amethyst.commons.ui.feeds.FeedContentState
+import com.vitorpamplona.amethyst.ui.feeds.RefresheableBox
+import com.vitorpamplona.amethyst.ui.feeds.RenderFeedContentState
+import com.vitorpamplona.amethyst.ui.feeds.SaveableFeedContentState
+import com.vitorpamplona.amethyst.ui.feeds.ScrollStateKeys
+import com.vitorpamplona.amethyst.ui.feeds.WatchLifecycleAndUpdateModel
+import com.vitorpamplona.amethyst.ui.layouts.DisappearingScaffold
+import com.vitorpamplona.amethyst.ui.navigation.bottombars.AppBottomBar
+import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.navigation.routes.Route
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms.datasource.AudioRoomsFilterAssemblerSubscription
+
+@Composable
+fun AudioRoomsScreen(
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    AudioRoomsScreen(
+        audioRoomsFeedContentState = accountViewModel.feedStates.audioRoomsFeed,
+        accountViewModel = accountViewModel,
+        nav = nav,
+    )
+}
+
+@Composable
+fun AudioRoomsScreen(
+    audioRoomsFeedContentState: FeedContentState,
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    WatchLifecycleAndUpdateModel(audioRoomsFeedContentState)
+    WatchAccountForAudioRoomsScreen(audioRoomsFeedState = audioRoomsFeedContentState, accountViewModel = accountViewModel)
+    AudioRoomsFilterAssemblerSubscription(accountViewModel)
+
+    DisappearingScaffold(
+        isInvertedLayout = false,
+        topBar = {
+            AudioRoomsTopBar(accountViewModel, nav)
+        },
+        bottomBar = {
+            AppBottomBar(Route.AudioRooms, accountViewModel) { route ->
+                if (route == Route.AudioRooms) {
+                    audioRoomsFeedContentState.sendToTop()
+                } else {
+                    nav.newStack(route)
+                }
+            }
+        },
+        accountViewModel = accountViewModel,
+    ) {
+        RefresheableBox(audioRoomsFeedContentState, true) {
+            SaveableFeedContentState(audioRoomsFeedContentState, scrollStateKey = ScrollStateKeys.AUDIO_ROOMS_SCREEN) { listState ->
+                RenderFeedContentState(
+                    feedContentState = audioRoomsFeedContentState,
+                    accountViewModel = accountViewModel,
+                    listState = listState,
+                    nav = nav,
+                    routeForLastRead = "AudioRoomsFeed",
+                    onLoaded = { loaded ->
+                        AudioRoomsFeedLoaded(
+                            loaded = loaded,
+                            listState = listState,
+                            accountViewModel = accountViewModel,
+                            nav = nav,
+                        )
+                    },
+                )
+            }
+        }
+    }
+}
+
+@Composable
+fun WatchAccountForAudioRoomsScreen(
+    audioRoomsFeedState: FeedContentState,
+    accountViewModel: AccountViewModel,
+) {
+    val listState by accountViewModel.account.liveLiveStreamsFollowLists.collectAsStateWithLifecycle()
+    val hiddenUsers =
+        accountViewModel.account.hiddenUsers.flow
+            .collectAsStateWithLifecycle()
+
+    LaunchedEffect(accountViewModel, listState, hiddenUsers) {
+        audioRoomsFeedState.checkKeysInvalidateDataAndSendToTop()
+    }
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/audiorooms/AudioRoomsTopBar.kt

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.model.TopFilter
+import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.navigation.topbars.FeedFilterSpinner
+import com.vitorpamplona.amethyst.ui.navigation.topbars.UserDrawerSearchTopBar
+import com.vitorpamplona.amethyst.ui.screen.FeedDefinition
+import com.vitorpamplona.amethyst.ui.screen.TopNavFilterState
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+import com.vitorpamplona.amethyst.ui.stringRes
+
+@Composable
+fun AudioRoomsTopBar(
+    accountViewModel: AccountViewModel,
+    nav: INav,
+) {
+    UserDrawerSearchTopBar(accountViewModel, nav) {
+        val list by accountViewModel.account.settings.defaultLiveStreamsFollowList
+            .collectAsStateWithLifecycle()
+
+        AudioRoomsTopNavFilterBar(
+            followListsModel = accountViewModel.feedStates.feedListOptions,
+            listName = list,
+            accountViewModel = accountViewModel,
+            onChange = accountViewModel.account.settings::changeDefaultLiveStreamsFollowList,
+        )
+    }
+}
+
+@Composable
+private fun AudioRoomsTopNavFilterBar(
+    followListsModel: TopNavFilterState,
+    listName: TopFilter,
+    accountViewModel: AccountViewModel,
+    onChange: (FeedDefinition) -> Unit,
+) {
+    val allLists by followListsModel.kind3GlobalPeopleRoutes.collectAsStateWithLifecycle()
+
+    FeedFilterSpinner(
+        placeholderCode = listName,
+        explainer = stringRes(R.string.select_list_to_filter),
+        options = allLists,
+        onSelect = { onChange(allLists.getOrNull(it) ?: followListsModel.allFollows) },
+        accountViewModel = accountViewModel,
+    )
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/audiorooms/dal/AudioRoomsFeedFilter.kt

@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms.dal
+
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.model.ParticipantListBuilder
+import com.vitorpamplona.amethyst.model.TopFilter
+import com.vitorpamplona.amethyst.model.topNavFeeds.allFollows.AllFollowsByOutboxTopNavFilter
+import com.vitorpamplona.amethyst.model.topNavFeeds.allFollows.AllFollowsByProxyTopNavFilter
+import com.vitorpamplona.amethyst.model.topNavFeeds.noteBased.author.AuthorsByOutboxTopNavFilter
+import com.vitorpamplona.amethyst.model.topNavFeeds.noteBased.author.AuthorsByProxyTopNavFilter
+import com.vitorpamplona.amethyst.model.topNavFeeds.noteBased.community.SingleCommunityTopNavFilter
+import com.vitorpamplona.amethyst.model.topNavFeeds.noteBased.muted.MutedAuthorsByOutboxTopNavFilter
+import com.vitorpamplona.amethyst.model.topNavFeeds.noteBased.muted.MutedAuthorsByProxyTopNavFilter
+import com.vitorpamplona.amethyst.ui.dal.AdditiveFeedFilter
+import com.vitorpamplona.amethyst.ui.dal.FilterByListParams
+import com.vitorpamplona.quartz.nip53LiveActivities.meetingSpaces.MeetingRoomEvent
+import com.vitorpamplona.quartz.nip53LiveActivities.meetingSpaces.MeetingSpaceEvent
+import com.vitorpamplona.quartz.nip53LiveActivities.meetingSpaces.tags.StatusTag
+
+/**
+ * Drawer feed for NIP-53 kind 30312 (Interactive Rooms / audio spaces).
+ *
+ * Shares LocalCache.liveChatChannels with the Live Streams feed, but narrows
+ * to MeetingSpaceEvent (30312) and MeetingRoomEvent (30313) so that the
+ * Clubhouse-style audio-room surface is independent of video live streams.
+ */
+class AudioRoomsFeedFilter(
+    val account: Account,
+) : AdditiveFeedFilter<Note>() {
+    override fun feedKey(): String = account.userProfile().pubkeyHex + "-" + followList().code
+
+    override fun limit() = 50
+
+    fun followList(): TopFilter = account.settings.defaultLiveStreamsFollowList.value
+
+    private fun TopFilter.isMuteList() = this is TopFilter.MuteList
+
+    private fun TopFilter.isBlockList() = this is TopFilter.PeopleList && this.address == account.blockPeopleList.getBlockListAddress()
+
+    private fun TopFilter.wantsToSeeNegativeStuff() = isMuteList() || isBlockList()
+
+    override fun showHiddenKey(): Boolean = followList().wantsToSeeNegativeStuff()
+
+    override fun feed(): List<Note> {
+        val allRoomNotes = LocalCache.liveChatChannels.mapNotNull { _, channel -> LocalCache.getAddressableNoteIfExists(channel.address) }
+        return sort(innerApplyFilter(allRoomNotes))
+    }
+
+    override fun applyFilter(newItems: Set<Note>): Set<Note> = innerApplyFilter(newItems)
+
+    private fun innerApplyFilter(collection: Collection<Note>): Set<Note> {
+        val filterParams =
+            FilterByListParams.create(
+                followLists = account.liveLiveStreamsFollowLists.value,
+                hiddenUsers = account.hiddenUsers.flow.value,
+            )
+
+        return collection.filterTo(HashSet()) {
+            val noteEvent = it.event
+            (noteEvent is MeetingSpaceEvent || noteEvent is MeetingRoomEvent) &&
+                filterParams.match(noteEvent, it.relays)
+        }
+    }
+
+    override fun sort(items: Set<Note>): List<Note> {
+        val topFilter = account.liveLiveStreamsFollowLists.value
+        val topFilterAuthors =
+            when (topFilter) {
+                is AuthorsByOutboxTopNavFilter -> topFilter.authors
+                is MutedAuthorsByOutboxTopNavFilter -> topFilter.authors
+                is AllFollowsByOutboxTopNavFilter -> topFilter.authors
+                is SingleCommunityTopNavFilter -> topFilter.authors
+                is AuthorsByProxyTopNavFilter -> topFilter.authors
+                is MutedAuthorsByProxyTopNavFilter -> topFilter.authors
+                is AllFollowsByProxyTopNavFilter -> topFilter.authors
+                else -> null
+            }
+
+        val followingKeySet = topFilterAuthors ?: account.kind3FollowList.flow.value.authors
+
+        val counter = ParticipantListBuilder()
+        val participantCounts = items.associate { it to counter.countFollowsThatParticipateOn(it, followingKeySet) }
+        val allParticipants = items.associate { it to counter.countFollowsThatParticipateOn(it, null) }
+
+        return items
+            .sortedWith(
+                compareBy(
+                    { convertStatusToOrder(it.event) },
+                    { participantCounts[it] },
+                    { allParticipants[it] },
+                    {
+                        when (val e = it.event) {
+                            is MeetingRoomEvent -> e.starts() ?: it.createdAt()
+                            else -> it.createdAt()
+                        }
+                    },
+                    { it.idHex },
+                ),
+            ).reversed()
+    }
+
+    private fun convertStatusToOrder(event: com.vitorpamplona.quartz.nip01Core.core.Event?): Int {
+        if (event == null) return 0
+        return when (event) {
+            is MeetingSpaceEvent -> {
+                when (event.status()) {
+                    StatusTag.STATUS.OPEN -> 2
+                    StatusTag.STATUS.PRIVATE -> 1
+                    StatusTag.STATUS.CLOSED -> 0
+                    else -> 0
+                }
+            }
+
+            is MeetingRoomEvent -> {
+                when (event.status()) {
+                    com.vitorpamplona.quartz.nip53LiveActivities.streaming.tags.StatusTag.STATUS.LIVE -> 2
+                    com.vitorpamplona.quartz.nip53LiveActivities.streaming.tags.StatusTag.STATUS.PLANNED -> 1
+                    com.vitorpamplona.quartz.nip53LiveActivities.streaming.tags.StatusTag.STATUS.ENDED -> 0
+                    else -> 0
+                }
+            }
+
+            else -> {
+                0
+            }
+        }
+    }
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/audiorooms/datasource/AudioRoomsFilterAssembler.kt

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms.datasource
+
+import androidx.compose.runtime.Stable
+import com.vitorpamplona.amethyst.commons.relayClient.composeSubscriptionManagers.ComposeSubscriptionManager
+import com.vitorpamplona.amethyst.model.Account
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountFeedContentStates
+import com.vitorpamplona.quartz.nip01Core.relay.client.INostrClient
+import kotlinx.coroutines.CoroutineScope
+
+class AudioRoomsQueryState(
+    val account: Account,
+    val feedStates: AccountFeedContentStates,
+    val scope: CoroutineScope,
+)
+
+@Stable
+class AudioRoomsFilterAssembler(
+    client: INostrClient,
+) : ComposeSubscriptionManager<AudioRoomsQueryState>() {
+    val group =
+        listOf(
+            AudioRoomsSubAssembler(client, ::allKeys),
+        )
+
+    override fun invalidateKeys() = invalidateFilters()
+
+    override fun invalidateFilters() = group.forEach { it.invalidateFilters() }
+
+    override fun destroy() = group.forEach { it.destroy() }
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/audiorooms/datasource/AudioRoomsFilterAssemblerSubscription.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms.datasource
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.lifecycle.viewModelScope
+import com.vitorpamplona.amethyst.commons.relayClient.subscriptions.KeyDataSourceSubscription
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
+
+@Composable
+fun AudioRoomsFilterAssemblerSubscription(accountViewModel: AccountViewModel) {
+    AudioRoomsFilterAssemblerSubscription(
+        accountViewModel.dataSources().audioRooms,
+        accountViewModel,
+    )
+}
+
+@Composable
+fun AudioRoomsFilterAssemblerSubscription(
+    dataSource: AudioRoomsFilterAssembler,
+    accountViewModel: AccountViewModel,
+) {
+    val state =
+        remember(accountViewModel.account) {
+            AudioRoomsQueryState(accountViewModel.account, accountViewModel.feedStates, accountViewModel.viewModelScope)
+        }
+
+    KeyDataSourceSubscription(state, dataSource)
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/audiorooms/datasource/AudioRoomsSubAssembler.kt

@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.ui.screen.loggedIn.audiorooms.datasource
+
+import com.vitorpamplona.amethyst.model.TopFilter
+import com.vitorpamplona.amethyst.model.User
+import com.vitorpamplona.amethyst.service.relayClient.eoseManagers.PerUserAndFollowListEoseManager
+import com.vitorpamplona.amethyst.service.relays.SincePerRelayMap
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.discover.nip53LiveActivities.makeLiveActivitiesFilter
+import com.vitorpamplona.quartz.nip01Core.relay.client.INostrClient
+import com.vitorpamplona.quartz.nip01Core.relay.client.pool.RelayBasedFilter
+import com.vitorpamplona.quartz.nip01Core.relay.client.subscriptions.Subscription
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.FlowPreview
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.flow.sample
+import kotlinx.coroutines.launch
+
+/**
+ * Reuses `makeLiveActivitiesFilter`, which already subscribes to kinds
+ * 30311/30312/30313/1311. The feed filter narrows to 30312/30313 client-side;
+ * sharing the wire filter avoids duplicate REQs on relays when both the Live
+ * Streams and Audio Rooms screens are open for the same user.
+ */
+class AudioRoomsSubAssembler(
+    client: INostrClient,
+    allKeys: () -> Set<AudioRoomsQueryState>,
+) : PerUserAndFollowListEoseManager<AudioRoomsQueryState, TopFilter>(client, allKeys) {
+    override fun updateFilter(
+        key: AudioRoomsQueryState,
+        since: SincePerRelayMap?,
+    ): List<RelayBasedFilter> {
+        val feedSettings = key.followsPerRelay()
+        return makeLiveActivitiesFilter(feedSettings, since, key.feedStates.audioRoomsFeed.lastNoteCreatedAtIfFilled())
+    }
+
+    override fun user(key: AudioRoomsQueryState) = key.account.userProfile()
+
+    override fun list(key: AudioRoomsQueryState) = key.listName()
+
+    fun AudioRoomsQueryState.listNameFlow() = account.settings.defaultLiveStreamsFollowList
+
+    fun AudioRoomsQueryState.listName() = listNameFlow().value
+
+    fun AudioRoomsQueryState.followsPerRelayFlow() = account.liveLiveStreamsFollowListsPerRelay
+
+    fun AudioRoomsQueryState.followsPerRelay() = followsPerRelayFlow().value
+
+    private val userJobMap = mutableMapOf<User, List<Job>>()
+
+    @OptIn(FlowPreview::class)
+    override fun newSub(key: AudioRoomsQueryState): Subscription {
+        val user = user(key)
+        userJobMap[user]?.forEach { it.cancel() }
+        userJobMap[user] =
+            listOf(
+                key.scope.launch(Dispatchers.IO) {
+                    key.listNameFlow().collectLatest {
+                        invalidateFilters()
+                    }
+                },
+                key.scope.launch(Dispatchers.IO) {
+                    key.followsPerRelayFlow().sample(500).collectLatest {
+                        invalidateFilters()
+                    }
+                },
+                key.account.scope.launch(Dispatchers.IO) {
+                    key.feedStates.audioRoomsFeed.lastNoteCreatedAtWhenFullyLoaded.sample(5000).collectLatest {
+                        invalidateFilters()
+                    }
+                },
+            )
+
+        return super.newSub(key)
+    }
+
+    override fun endSub(
+        key: User,
+        subId: String,
+    ) {
+        super.endSub(key, subId)
+        userJobMap[key]?.forEach { it.cancel() }
+    }
+}

amethyst/src/main/res/values/strings.xml

@@ -488,6 +488,7 @@
     <string name="public_chats">Public Chats</string>
     <string name="follow_packs">Follow Packs</string>
     <string name="live_streams">Live Streams</string>
+    <string name="audio_rooms">Audio Rooms</string>
     <string name="longs">Videos</string>
     <string name="articles">Articles</string>
     <string name="private_bookmarks">Private Bookmarks</string>