fix(nests): only gate room re-entry through lobby when card reads closed

NestFeedCard previously routed every tap on a joinable MeetingSpaceEvent
through NestLobbyScreen. The lobby exists to keep an accidental tap on
a stale room from booting the audio pipeline (and the host-side
kind-30312 republish path) — once the badge says the room is live with
fresh presence, that gating is just extra friction. Mirror the badge's
liveness heuristic in the click handler and launch NestActivity
directly for cards rendering as LIVE / PLANNED / PRIVATE; only EndedFlag
cards (status = ENDED, status = LIVE with stale presence, or unknown
status) keep flowing through the read-only lobby.

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

@@ -49,6 +49,7 @@ import androidx.compose.ui.Alignment.Companion.TopEnd
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
@@ -77,6 +78,8 @@ import com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.publicChannels.nip53L
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.publicChannels.nip53LiveActivities.ScheduledFlag
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.discover.nip53LiveActivities.LoadParticipants
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.nests.datasource.NestRoomFilterAssemblerSubscription
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.nests.room.activity.NestActivity
+import com.vitorpamplona.amethyst.ui.screen.loggedIn.nests.room.activity.NestBridge
 import com.vitorpamplona.amethyst.ui.stringRes
 import com.vitorpamplona.amethyst.ui.theme.DividerThickness
 import com.vitorpamplona.amethyst.ui.theme.DoubleVertSpacer
@@ -134,11 +137,15 @@ fun NestsFeedLoaded(
 }
 
 /**
- * Audio-rooms list card. Mirrors [ObserveAndRenderSpace] visually but
+ * Audio-rooms list card. Mirrors [ObserveAndRenderSpace] visually and
- * routes a tap into the in-app [NestLobbyScreen] when the underlying
+ * gates a tap on the underlying [MeetingSpaceEvent] by the same liveness
- * event is a joinable [MeetingSpaceEvent]. The lobby is read-only —
+ * heuristic the badge uses: cards rendering as [EndedFlag] (status =
- * launching the audio activity (and any host-side kind-30312 refresh)
+ * ENDED, status = LIVE with stale presence, or unknown status) route
- * still requires an explicit tap on the lobby's Open Room button.
+ * through the read-only [NestLobbyScreen] so re-entry can't accidentally
+ * boot the audio pipeline or trigger a host-side kind-30312 refresh on
+ * a dead room. Cards that the UI still shows as live, scheduled, or
+ * private launch [NestActivity] directly — the lobby's purpose is only
+ * to gate stale rooms.
  */
 @Composable
 private fun NestFeedCard(
@@ -148,15 +155,44 @@ private fun NestFeedCard(
     nav: INav,
 ) {
     val meetingEvent = baseNote.event as? MeetingSpaceEvent ?: return
+    val context = LocalContext.current
+    val status = meetingEvent.checkStatus(meetingEvent.status())
+
+    val isUiClosed =
+        when (status) {
+            StatusTag.STATUS.LIVE -> {
+                val latestPresence by observeRoomLatestPresence(meetingEvent.address(), accountViewModel)
+                val presence = latestPresence
+                presence != null && presence <= TimeUtils.now() - PRESENCE_FRESHNESS_WINDOW_SECONDS
+            }
+
+            StatusTag.STATUS.PLANNED,
+            StatusTag.STATUS.PRIVATE,
+            -> {
+                false
+            }
+
+            else -> {
+                true
+            }
+        }
 
     val onClick =
-        remember(meetingEvent) {
+        remember(meetingEvent, isUiClosed) {
             {
                 val service = meetingEvent.service()
                 val endpoint = meetingEvent.endpoint()
                 val dTag = meetingEvent.address().dTag
                 if (!service.isNullOrBlank() && !endpoint.isNullOrBlank() && dTag.isNotBlank()) {
-                    nav.nav(Route.NestLobby(meetingEvent.address().toValue()))
+                    if (isUiClosed) {
+                        nav.nav(Route.NestLobby(meetingEvent.address().toValue()))
+                    } else {
+                        NestBridge.set(accountViewModel)
+                        NestActivity.launch(
+                            context = context,
+                            addressValue = meetingEvent.address().toValue(),
+                        )
+                    }
                 } else {
                     nav.nav { routeFor(baseNote, accountViewModel.account) }
                 }