feat(chat): bring Concord moderation and minichat threads into the modern chat UI

Concord channel messages render through the redesigned chat feed, so two
features that main wired to the old surfaces were unreachable there:

- Ban / make-admin moderation lived only in the social-feed NoteQuickActionMenu.
  Moved into the shared noteActionSections catalog (gated by concordAdminTarget /
  concordBanTarget), so both the chat long-press sheet and the 3-dot menu now
  expose it. The community-rekeying ban keeps a confirmation dialog, shared by
  both hosts via ConcordBanConfirmationDialog.

- The minichat reply-count chip sat in the tap-to-expand detailRow, hidden in the
  modern compact layout. Moved into the compact engagement row (ChatReactionChips)
  as a "N replies" chip alongside reactions and zaps, so the thread affordance is
  always visible; tapping opens the message's minichat thread.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0129yvP2hmVeDFfuKKy94tqX

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/elements/DropDownMenu.kt

@@ -105,6 +105,7 @@ fun NoteDropDownMenu(
     var addLabelDialogShowing by remember { mutableStateOf(false) }
     var showShareSheet by remember { mutableStateOf(false) }
     var deleteConfirmationShowing by remember { mutableStateOf(false) }
+    var concordBanConfirming by remember { mutableStateOf(false) }
 
     // Tapping "Share" hands the note's share options off to the shared Share
     // drawer (ShareOptionsBottomSheet). We render it INSTEAD of the menu dialog
@@ -187,6 +188,15 @@ fun NoteDropDownMenu(
         )
     }
 
+    if (concordBanConfirming) {
+        ConcordBanConfirmationDialog(
+            note = note,
+            accountViewModel = accountViewModel,
+            onClose = { concordBanConfirming = false },
+            onBanned = onDismiss,
+        )
+    }
+
     val handlers =
         NoteActionHandlers(
             onShare = { showShareSheet = true },
@@ -202,6 +212,7 @@ fun NoteDropDownMenu(
                     deleteConfirmationShowing = true
                 }
             },
+            onConcordBan = { concordBanConfirming = true },
             onDismiss = onDismiss,
         )
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/elements/NoteActionSections.kt

@@ -20,9 +20,11 @@
  */
 package com.vitorpamplona.amethyst.ui.note.elements
 
+import androidx.compose.material3.ButtonDefaults
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.Immutable
 import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalClipboard
 import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbol
@@ -32,8 +34,10 @@ import com.vitorpamplona.amethyst.model.Note
 import com.vitorpamplona.amethyst.ui.components.util.setText
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
 import com.vitorpamplona.amethyst.ui.navigation.routes.Route
+import com.vitorpamplona.amethyst.ui.note.QuickActionAlertDialogOneButton
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.stringRes
+import com.vitorpamplona.amethyst.ui.theme.LightRedColor
 import com.vitorpamplona.quartz.experimental.music.track.MusicTrackEvent
 import com.vitorpamplona.quartz.nip01Core.jackson.JacksonMapper
 import com.vitorpamplona.quartz.nip10Notes.TextNoteEvent
@@ -64,6 +68,10 @@ data class NoteActionHandlers(
     val onAddLabel: () -> Unit,
     val onReport: () -> Unit,
     val onDeleteRequest: () -> Unit,
+    // Banning a Concord member re-keys the community for everyone, so the surface
+    // owns a confirmation dialog (like delete). Null where a caller never renders
+    // Concord messages (they simply never see the Ban tile anyway).
+    val onConcordBan: (() -> Unit)? = null,
     val onDismiss: () -> Unit,
 )
 
@@ -339,7 +347,59 @@ fun noteActionSections(
             } else {
                 add(NoteAction(MaterialSymbols.Report, stringRes(R.string.block_report), isDestructive = true, onClick = handlers.onReport))
             }
+
+            // Concord channel moderation, gated by this account's authority over the
+            // message's author (both return null unless it's a Concord message this
+            // account may act on). Promote/demote is instant; a ban re-keys the
+            // community, so it defers to the surface's confirmation dialog.
+            val concordAdmin = accountViewModel.account.concordAdminTarget(note)
+            if (concordAdmin != null) {
+                val isAdmin = concordAdmin.third
+                add(
+                    NoteAction(
+                        MaterialSymbols.Shield,
+                        stringRes(if (isAdmin) R.string.concord_remove_admin else R.string.concord_make_admin),
+                    ) {
+                        accountViewModel.toggleConcordAdmin(note)
+                        handlers.onDismiss()
+                    },
+                )
+            }
+            if (handlers.onConcordBan != null && accountViewModel.account.concordBanTarget(note) != null) {
+                add(NoteAction(MaterialSymbols.Gavel, stringRes(R.string.concord_ban_user), isDestructive = true, onClick = handlers.onConcordBan))
+            }
         }
 
     return listOf(author, copyAndShare, editAndBroadcast, organize, moderation).filter { it.isNotEmpty() }
 }
+
+/**
+ * Confirmation for a Concord ban — banning re-keys the community for every remaining
+ * member (CORD-06 refounding), so it's a heavier action than a mute and gets its own
+ * dialog. Shared by both action surfaces (sheet + 3-dot menu). [onClose] dismisses the
+ * dialog; [onBanned] fires after the ban is issued (so the host can also close itself).
+ */
+@Composable
+fun ConcordBanConfirmationDialog(
+    note: Note,
+    accountViewModel: AccountViewModel,
+    onClose: () -> Unit,
+    onBanned: () -> Unit,
+) {
+    QuickActionAlertDialogOneButton(
+        title = stringRes(R.string.concord_ban_user_title),
+        textContent = stringRes(R.string.concord_ban_user_body),
+        buttonIcon = MaterialSymbols.Gavel,
+        buttonText = stringRes(R.string.concord_ban_user),
+        buttonColors =
+            ButtonDefaults.buttonColors(
+                containerColor = LightRedColor,
+                contentColor = Color.White,
+            ),
+        onClickDoOnce = {
+            accountViewModel.banConcordMember(note)
+            onBanned()
+        },
+        onDismiss = onClose,
+    )
+}

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/feed/ChatMessageActionSheet.kt

@@ -72,6 +72,7 @@ import com.vitorpamplona.amethyst.ui.note.QuickActionAlertDialog
 import com.vitorpamplona.amethyst.ui.note.RenderReaction
 import com.vitorpamplona.amethyst.ui.note.ZapAmountChoiceGrid
 import com.vitorpamplona.amethyst.ui.note.elements.AddHashtagLabelDialog
+import com.vitorpamplona.amethyst.ui.note.elements.ConcordBanConfirmationDialog
 import com.vitorpamplona.amethyst.ui.note.elements.DropDownParams
 import com.vitorpamplona.amethyst.ui.note.elements.NoteActionHandlers
 import com.vitorpamplona.amethyst.ui.note.elements.ShareOptionsBottomSheet
@@ -123,6 +124,7 @@ fun ChatMessageActionSheet(
     var reportDialogShowing by remember { mutableStateOf(false) }
     var addLabelDialogShowing by remember { mutableStateOf(false) }
     var deleteConfirmationShowing by remember { mutableStateOf(false) }
+    var concordBanConfirming by remember { mutableStateOf(false) }
 
     // Own private rumors (NIP-17 DMs) must be retracted with a gift-wrapped
     // deletion — a public NIP-09 would e-tag the rumor id onto public relays.
@@ -206,6 +208,15 @@ fun ChatMessageActionSheet(
         )
     }
 
+    if (concordBanConfirming) {
+        ConcordBanConfirmationDialog(
+            note = note,
+            accountViewModel = accountViewModel,
+            onClose = { concordBanConfirming = false },
+            onBanned = onDismiss,
+        )
+    }
+
     val state by observeBookmarksFollowsAndAccount(note, accountViewModel).collectAsStateWithLifecycle(
         DropDownParams(
             isFollowingAuthor = false,
@@ -259,6 +270,7 @@ fun ChatMessageActionSheet(
                             deleteConfirmationShowing = true
                         }
                     },
+                    onConcordBan = { concordBanConfirming = true },
                     onDismiss = onDismiss,
                 )
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/feed/ChatMessageCompose.kt

@@ -21,19 +21,14 @@
 package com.vitorpamplona.amethyst.ui.screen.loggedIn.chats.feed
 
 import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.Surface
-import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.LaunchedEffect
@@ -50,18 +45,10 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Alignment.Companion.CenterStart
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.res.pluralStringResource
 import androidx.compose.ui.unit.dp
-import com.vitorpamplona.amethyst.R
-import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbols
-import com.vitorpamplona.amethyst.commons.model.concord.ConcordChannel
-import com.vitorpamplona.amethyst.commons.model.nip28PublicChats.PublicChatChannel
-import com.vitorpamplona.amethyst.commons.model.nip29RelayGroups.RelayGroupChannel
 import com.vitorpamplona.amethyst.model.Note
-import com.vitorpamplona.amethyst.service.relayClient.reqCommand.event.observeNoteMinichatReplyCount
 import com.vitorpamplona.amethyst.ui.components.LocalInlineQuoteRenderer
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
-import com.vitorpamplona.amethyst.ui.navigation.routes.Route
 import com.vitorpamplona.amethyst.ui.navigation.routes.routeFor
 import com.vitorpamplona.amethyst.ui.note.DisplayDraftChat
 import com.vitorpamplona.amethyst.ui.note.LikeReaction
@@ -111,7 +98,6 @@ import com.vitorpamplona.quartz.nip53LiveActivities.raid.LiveActivitiesRaidEvent
 import com.vitorpamplona.quartz.nip57Zaps.LnZapEvent
 import com.vitorpamplona.quartz.nip57Zaps.splits.hasZapSplitSetup
 import com.vitorpamplona.quartz.nip57Zaps.zapraiser.zapraiserAmount
-import com.vitorpamplona.amethyst.commons.icons.symbols.Icon as MaterialSymbolIcon
 
 @Composable
 fun ChatroomMessageCompose(
@@ -372,8 +358,6 @@ fun NormalChatNote(
 
                             ZapReaction(note, MaterialTheme.colorScheme.placeholderText, accountViewModel, nav = nav)
 
-                            MinichatReplyChip(note, accountViewModel, nav)
-
                             val geo = remember(note) { note.event?.geoHashOrScope() }
                             if (geo != null) {
                                 Spacer(StdHorzSpacer)
@@ -481,56 +465,6 @@ private fun MessageBubbleLines(
     }
 }
 
-/**
- * A chip on a chat message's action row showing how many kind-1111 thread ("minichat")
- * replies it has; tapping opens that thread. Shown only when there is at least one — an
- * inline reply is an ordinary message and isn't counted.
- *
- * Only shown where minichats are actually wired: the public chats (Concord, NIP-28, NIP-29).
- * NIP-17 DMs are deliberately excluded — most clients don't render kind-1111 replies in a DM
- * view, so a thread there would be a dead end.
- */
-@Composable
-private fun MinichatReplyChip(
-    note: Note,
-    accountViewModel: AccountViewModel,
-    nav: INav,
-) {
-    val supportsMinichat =
-        remember(note) {
-            note.inGatherers?.any { it is ConcordChannel || it is PublicChatChannel || it is RelayGroupChannel } == true
-        }
-    if (!supportsMinichat) return
-
-    val count by observeNoteMinichatReplyCount(note, accountViewModel)
-    if (count > 0) {
-        Spacer(StdHorzSpacer)
-        Surface(
-            shape = RoundedCornerShape(6.dp),
-            color = MaterialTheme.colorScheme.secondaryContainer,
-            modifier = Modifier.clickable { nav.nav(Route.ChatMinichat(note.idHex)) },
-        ) {
-            Row(
-                verticalAlignment = Alignment.CenterVertically,
-                horizontalArrangement = Arrangement.spacedBy(3.dp),
-                modifier = Modifier.padding(horizontal = 6.dp, vertical = 2.dp),
-            ) {
-                MaterialSymbolIcon(
-                    symbol = MaterialSymbols.Forum,
-                    contentDescription = null,
-                    tint = MaterialTheme.colorScheme.onSecondaryContainer,
-                    modifier = Modifier.size(13.dp),
-                )
-                Text(
-                    text = pluralStringResource(R.plurals.chat_minichat_reply_count, count, count),
-                    style = MaterialTheme.typography.labelSmall,
-                    color = MaterialTheme.colorScheme.onSecondaryContainer,
-                )
-            }
-        }
-    }
-}
-
 /**
  * Id of a note whose reply-to preview should be suppressed on a message row. Set by a
  * thread view that already pins that note at the top (the minichat pins its root), so each

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/feed/ChatReactionChips.kt

@@ -42,16 +42,25 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.compositeOver
+import androidx.compose.ui.res.pluralStringResource
 import androidx.compose.ui.text.SpanStyle
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import com.vitorpamplona.amethyst.R
 import com.vitorpamplona.amethyst.commons.emojicoder.EmojiCoder
+import com.vitorpamplona.amethyst.commons.icons.symbols.Icon
+import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbols
+import com.vitorpamplona.amethyst.commons.model.concord.ConcordChannel
+import com.vitorpamplona.amethyst.commons.model.nip28PublicChats.PublicChatChannel
+import com.vitorpamplona.amethyst.commons.model.nip29RelayGroups.RelayGroupChannel
 import com.vitorpamplona.amethyst.commons.ui.components.AnimatedBorderTextCornerRadius
 import com.vitorpamplona.amethyst.model.Note
+import com.vitorpamplona.amethyst.service.relayClient.reqCommand.event.observeNoteMinichatReplyCount
 import com.vitorpamplona.amethyst.service.relayClient.reqCommand.event.observeNoteReactions
 import com.vitorpamplona.amethyst.ui.components.InLineIconRenderer
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
+import com.vitorpamplona.amethyst.ui.navigation.routes.Route
 import com.vitorpamplona.amethyst.ui.note.LikedIcon
 import com.vitorpamplona.amethyst.ui.note.ObserveZapAmountText
 import com.vitorpamplona.amethyst.ui.note.ZappedIcon
@@ -119,12 +128,23 @@ fun ChatReactionChips(
         )
     }
 
+    // Kind-1111 thread ("minichat") replies. Only public chats wire them up (Concord,
+    // NIP-28, NIP-29); NIP-17 DMs deliberately don't, so most clients wouldn't render
+    // a thread there. An inline reply is an ordinary message and isn't counted.
+    val supportsMinichat =
+        remember(baseNote) {
+            baseNote.inGatherers?.any { it is ConcordChannel || it is PublicChatChannel || it is RelayGroupChannel } == true
+        }
+    val minichatCount by if (supportsMinichat) observeNoteMinichatReplyCount(baseNote, accountViewModel) else remember { mutableStateOf(0) }
+
     ObserveZapAmountText(baseNote, accountViewModel) { zapAmount ->
         RenderChatReactionChips(
             chips = chips,
             zapAmount = zapAmount,
+            minichatCount = minichatCount,
             onToggleReaction = { accountViewModel.reactToOrDelete(baseNote, it) },
             onOpenDetails = { showDetails = true },
+            onOpenMinichat = { nav.nav(Route.ChatMinichat(baseNote.idHex)) },
         )
     }
 }
@@ -134,10 +154,12 @@ fun ChatReactionChips(
 private fun RenderChatReactionChips(
     chips: ImmutableList<ReactionChip>,
     zapAmount: String,
+    minichatCount: Int,
     onToggleReaction: (String) -> Unit,
     onOpenDetails: () -> Unit,
+    onOpenMinichat: () -> Unit,
 ) {
-    if (chips.isEmpty() && zapAmount.isBlank()) return
+    if (chips.isEmpty() && zapAmount.isBlank() && minichatCount <= 0) return
 
     FlowRow(
         // Inset from the bubble's edge so overlapping chips ride the border without
@@ -157,6 +179,43 @@ private fun RenderChatReactionChips(
                 onLongClick = onOpenDetails,
             )
         }
+
+        if (minichatCount > 0) {
+            MinichatChip(minichatCount, onClick = onOpenMinichat)
+        }
+    }
+}
+
+/**
+ * "N replies" thread entry, styled like the reaction/zap chips so the engagement row
+ * reads as one strip under the bubble. Tapping opens the message's minichat thread.
+ */
+@Composable
+private fun MinichatChip(
+    count: Int,
+    onClick: () -> Unit,
+) {
+    Surface(
+        onClick = onClick,
+        shape = ButtonBorder,
+        color = MaterialTheme.colorScheme.surfaceVariant,
+        border = BorderStroke(1.dp, MaterialTheme.colorScheme.subtleBorder),
+    ) {
+        ChipContentRow {
+            Icon(
+                symbol = MaterialSymbols.Forum,
+                contentDescription = null,
+                tint = MaterialTheme.colorScheme.grayText,
+                modifier = Size14Modifier,
+            )
+            Text(
+                text = pluralStringResource(R.plurals.chat_minichat_reply_count, count, count),
+                fontSize = Font12SP,
+                fontWeight = FontWeight.Bold,
+                color = MaterialTheme.colorScheme.grayText,
+                maxLines = 1,
+            )
+        }
     }
 }