fix(cache): use relayStatuses (available) instead of connectedRelays for subscriptions

Root cause of "0 relays, 0 notes, 0 follows": all screens used
connectedRelays as the relay set for subscriptions, but NostrClient
uses relay-on-demand — relays only connect when openReqSubscription
is called with their URL. This created a deadlock: screens waited for
connected relays, but relays only connect when screens subscribe.

Fix: use relayStatuses.keys (registered/available relays) which are
populated by addDefaultRelays() at startup. openReqSubscription
triggers connection on-demand.

Affected screens: FeedScreen, UserProfileScreen, ThreadScreen,
NotificationsScreen, BookmarksScreen, ReadsScreen, NewDmDialog.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/BookmarksScreen.kt

@@ -76,7 +76,8 @@ fun BookmarksScreen(
     onNavigateToThread: (String) -> Unit = {},
     onZapFeedback: (ZapFeedback) -> Unit = {},
 ) {
-    val connectedRelays by relayManager.connectedRelays.collectAsState()
+    val relayStatuses by relayManager.relayStatuses.collectAsState()
+    val connectedRelays = remember(relayStatuses) { relayStatuses.keys }
     val scope = rememberCoroutineScope()
 
     // Tab state

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/FeedScreen.kt

@@ -166,18 +166,22 @@ fun FeedScreen(
     onNavigateToThread: (String) -> Unit = {},
     onZapFeedback: (ZapFeedback) -> Unit = {},
 ) {
+    val relayStatuses by relayManager.relayStatuses.collectAsState()
     val connectedRelays by relayManager.connectedRelays.collectAsState()
     val followedUsers by localCache.followedUsers.collectAsState()
 
+    // Available relay URLs — openReqSubscription triggers connection on-demand
+    val allRelayUrls = remember(relayStatuses) { relayStatuses.keys }
+
     var replyToEvent by remember { mutableStateOf<Event?>(null) }
     var lightboxState by remember { mutableStateOf<LightboxState?>(null) }
     var feedMode by remember { mutableStateOf(initialFeedMode ?: DesktopPreferences.feedMode) }
 
     // Subscribe to contact list (kind 3) — populates localCache.followedUsers
-    rememberSubscription(connectedRelays, account, relayManager = relayManager) {
-        if (connectedRelays.isNotEmpty() && account != null) {
+    rememberSubscription(allRelayUrls, account, relayManager = relayManager) {
+        if (allRelayUrls.isNotEmpty() && account != null) {
             createContactListSubscription(
-                relays = connectedRelays,
+                relays = allRelayUrls,
                 pubKeyHex = account.pubKeyHex,
                 onEvent = { event, _, relay, _ ->
                     subscriptionsCoordinator?.consumeEvent(event, relay)
@@ -189,13 +193,13 @@ fun FeedScreen(
     }
 
     // Subscribe to feed events (kind 1) — populates cache via coordinator
-    rememberSubscription(connectedRelays, feedMode, followedUsers, relayManager = relayManager) {
-        if (connectedRelays.isEmpty()) return@rememberSubscription null
+    rememberSubscription(allRelayUrls, feedMode, followedUsers, relayManager = relayManager) {
+        if (allRelayUrls.isEmpty()) return@rememberSubscription null
 
         when (feedMode) {
             FeedMode.GLOBAL -> {
                 createGlobalFeedSubscription(
-                    relays = connectedRelays,
+                    relays = allRelayUrls,
                     onEvent = { event, _, relay, _ ->
                         subscriptionsCoordinator?.consumeEvent(event, relay)
                     },
@@ -206,7 +210,7 @@ fun FeedScreen(
                 val follows = followedUsers.toList()
                 if (follows.isNotEmpty()) {
                     createFollowingFeedSubscription(
-                        relays = connectedRelays,
+                        relays = allRelayUrls,
                         followedUsers = follows,
                         onEvent = { event, _, relay, _ ->
                             subscriptionsCoordinator?.consumeEvent(event, relay)

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/NotificationsScreen.kt

@@ -112,7 +112,8 @@ fun NotificationsScreen(
     account: AccountState.LoggedIn,
     subscriptionsCoordinator: DesktopRelaySubscriptionsCoordinator? = null,
 ) {
-    val connectedRelays by relayManager.connectedRelays.collectAsState()
+    val relayStatuses by relayManager.relayStatuses.collectAsState()
+    val connectedRelays = remember(relayStatuses) { relayStatuses.keys }
     val scope = rememberCoroutineScope()
     val notificationState =
         remember {

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/ReadsScreen.kt

@@ -187,7 +187,8 @@ fun ReadsScreen(
     onNavigateToThread: (String) -> Unit = {},
     onZapFeedback: (ZapFeedback) -> Unit = {},
 ) {
-    val connectedRelays by relayManager.connectedRelays.collectAsState()
+    val relayStatuses by relayManager.relayStatuses.collectAsState()
+    val connectedRelays = remember(relayStatuses) { relayStatuses.keys }
     val scope = rememberCoroutineScope()
 
     val eventState =

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/ThreadScreen.kt

@@ -89,7 +89,8 @@ fun ThreadScreen(
     onZapFeedback: (ZapFeedback) -> Unit = {},
     onReply: (Event) -> Unit = {},
 ) {
-    val connectedRelays by relayManager.connectedRelays.collectAsState()
+    val relayStatuses by relayManager.relayStatuses.collectAsState()
+    val connectedRelays = remember(relayStatuses) { relayStatuses.keys }
 
     // Lightbox state
     var lightboxState by remember { mutableStateOf<LightboxState?>(null) }

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/UserProfileScreen.kt

@@ -124,7 +124,8 @@ fun UserProfileScreen(
     onNavigateToArticle: (String) -> Unit = {},
     onZapFeedback: (ZapFeedback) -> Unit = {},
 ) {
-    val connectedRelays by relayManager.connectedRelays.collectAsState()
+    val relayStatuses by relayManager.relayStatuses.collectAsState()
+    val connectedRelays = remember(relayStatuses) { relayStatuses.keys }
 
     // User metadata
     var displayName by remember { mutableStateOf<String?>(null) }

desktopApp/src/jvmMain/kotlin/com/vitorpamplona/amethyst/desktop/ui/chats/NewDmDialog.kt

@@ -80,7 +80,8 @@ fun NewDmDialog(
     val cachedUsers by searchState.cachedUserResults.collectAsState()
     val relaySearchResults by searchState.relaySearchResults.collectAsState()
     val isSearchingRelays by searchState.isSearchingRelays.collectAsState()
-    val connectedRelays by relayManager.connectedRelays.collectAsState()
+    val relayStatuses by relayManager.relayStatuses.collectAsState()
+    val connectedRelays = remember(relayStatuses) { relayStatuses.keys }
     val focusRequester = remember { FocusRequester() }
 
     // NIP-50 relay search when local cache has few/no results