feat: pin add-member field to bottom of Marmots group info with add button

Move the add-member search to a fixed position at the bottom of the screen
(matching the New Short Note pattern) so it stays visible regardless of how
far the user has scrolled through a large member list. Suggestions now render
above the input, and each suggestion row shows an explicit PersonAdd icon
button so the add action has a clear visual affordance.

Adds an optional trailingContent slot to ShowUserSuggestionList / UserLine
so callers can attach per-row actions without forking the component.

https://claude.ai/code/session_01JbRycm4g3LrqatnCVWVdGh

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/note/creators/userSuggestions/ShowUserSuggestionList.kt

@@ -67,6 +67,7 @@ fun ShowUserSuggestionList(
     accountViewModel: AccountViewModel,
     modifier: Modifier = Modifier,
     onEmpty: @Composable () -> Unit = {},
+    trailingContent: (@Composable (User) -> Unit)? = null,
 ) {
     UserSearchDataSourceSubscription(userSuggestions, accountViewModel)
 
@@ -87,7 +88,7 @@ fun ShowUserSuggestionList(
         }
     }
 
-    WatchResponses(userSuggestions, listState, onSelect, accountViewModel, modifier, onEmpty)
+    WatchResponses(userSuggestions, listState, onSelect, accountViewModel, modifier, onEmpty, trailingContent)
 }
 
 @Composable
@@ -110,6 +111,7 @@ fun WatchResponses(
     accountViewModel: AccountViewModel,
     modifier: Modifier = Modifier,
     onEmpty: @Composable () -> Unit = {},
+    trailingContent: (@Composable (User) -> Unit)? = null,
 ) {
     val suggestions by userSuggestions.results.collectAsStateWithLifecycle(emptyList())
 
@@ -120,7 +122,7 @@ fun WatchResponses(
             state = listState,
         ) {
             itemsIndexed(suggestions, key = { _, item -> item.pubkeyHex }) { _, item ->
-                UserLine(item, accountViewModel) { onSelect(item) }
+                UserLine(item, accountViewModel, trailingContent) { onSelect(item) }
                 HorizontalDivider(
                     thickness = DividerThickness,
                 )
@@ -135,6 +137,7 @@ fun WatchResponses(
 fun UserLine(
     baseUser: User,
     accountViewModel: AccountViewModel,
+    trailingContent: (@Composable (User) -> Unit)? = null,
     onClick: () -> Unit,
 ) {
     SlimListItem(
@@ -153,6 +156,7 @@ fun UserLine(
                 WatchAndDisplayNip05Row(baseUser, accountViewModel)
             }
         },
+        trailingContent = trailingContent?.let { { it(baseUser) } },
     )
 }
 

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/marmotGroup/MarmotGroupInfoScreen.kt

@@ -32,10 +32,9 @@ import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ExperimentalLayoutApi
 import androidx.compose.foundation.layout.FlowRow
 import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.imePadding
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.lazy.LazyColumn
@@ -45,6 +44,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.ArrowBack
 import androidx.compose.material.icons.automirrored.filled.ExitToApp
 import androidx.compose.material.icons.filled.Edit
+import androidx.compose.material.icons.filled.PersonAdd
 import androidx.compose.material.icons.filled.PersonRemove
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.ExperimentalMaterial3Api
@@ -165,14 +165,14 @@ fun MarmotGroupInfoScreen(
             )
         },
     ) { padding ->
-        LazyColumn(
+        Column(
             modifier =
                 Modifier
                     .fillMaxSize()
-                    .padding(padding),
+                    .padding(padding)
+                    .imePadding(),
         ) {
-            // Group header section
+            // Group header section (fixed at top)
-            item {
             Column(
                 modifier =
                     Modifier
@@ -212,10 +212,37 @@ fun MarmotGroupInfoScreen(
                 }
             }
             HorizontalDivider()
+
+            // Members list (scrollable, takes remaining vertical space)
+            LazyColumn(modifier = Modifier.weight(1f).fillMaxWidth()) {
+                item {
+                    Text(
+                        text = "Members",
+                        style = MaterialTheme.typography.titleMedium,
+                        fontWeight = FontWeight.Bold,
+                        modifier = Modifier.padding(horizontal = 16.dp, vertical = 12.dp),
+                    )
                 }
 
-            // Inline add-member search
+                items(members, key = { it.leafIndex }) { member ->
-            item {
+                    val isMe = member.pubkey == myPubkey
+                    val isAdmin = member.pubkey in adminPubkeys
+                    MemberRow(
+                        member = member,
+                        isMe = isMe,
+                        isAdmin = isAdmin,
+                        canRemove = !isMe,
+                        accountViewModel = accountViewModel,
+                        nav = nav,
+                        onRemoveClick = { memberToRemove = member },
+                    )
+                    HorizontalDivider()
+                }
+            }
+
+            HorizontalDivider()
+
+            // Suggestions + add-member input (fixed at bottom)
             AddMemberInline(
                 nostrGroupId = nostrGroupId,
                 searchInput = addSearchInput,
@@ -260,34 +287,6 @@ fun MarmotGroupInfoScreen(
                     }
                 },
             )
-                HorizontalDivider()
-            }
-
-            // Members section header
-            item {
-                Text(
-                    text = "Members",
-                    style = MaterialTheme.typography.titleMedium,
-                    fontWeight = FontWeight.Bold,
-                    modifier = Modifier.padding(horizontal = 16.dp, vertical = 12.dp),
-                )
-            }
-
-            // Member list with inline remove button
-            items(members, key = { it.leafIndex }) { member ->
-                val isMe = member.pubkey == myPubkey
-                val isAdmin = member.pubkey in adminPubkeys
-                MemberRow(
-                    member = member,
-                    isMe = isMe,
-                    isAdmin = isAdmin,
-                    canRemove = !isMe,
-                    accountViewModel = accountViewModel,
-                    nav = nav,
-                    onRemoveClick = { memberToRemove = member },
-                )
-                HorizontalDivider()
-            }
         }
     }
 
@@ -363,18 +362,32 @@ private fun AddMemberInline(
     onAdd: (com.vitorpamplona.amethyst.model.User) -> Unit,
 ) {
     Column(modifier = Modifier.fillMaxWidth()) {
-        OutlinedTextField(
+        if (!isAdding && searchInput.length > 2) {
-            value = searchInput,
+            ShowUserSuggestionList(
-            onValueChange = onSearchInputChange,
+                userSuggestions = userSuggestions,
-            label = { Text("Add member") },
+                onSelect = { user -> onAdd(user) },
-            placeholder = { Text("Name, npub, or NIP-05") },
+                accountViewModel = accountViewModel,
-            modifier =
+                modifier = SuggestionListDefaultHeightChat,
-                Modifier
+                onEmpty = {
-                    .fillMaxWidth()
+                    Text(
-                    .padding(horizontal = 16.dp, vertical = 8.dp),
+                        "They must have published a KeyPackage (kind:30443) to be added.",
-            singleLine = true,
+                        modifier = Modifier.padding(horizontal = 16.dp, vertical = 8.dp),
-            enabled = !isAdding,
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
                     )
+                },
+                trailingContent = { user ->
+                    IconButton(onClick = { onAdd(user) }) {
+                        Icon(
+                            imageVector = Icons.Default.PersonAdd,
+                            contentDescription = "Add to group",
+                            tint = MaterialTheme.colorScheme.primary,
+                        )
+                    }
+                },
+            )
+            HorizontalDivider()
+        }
 
         if (statusMessage != null) {
             Text(
@@ -390,23 +403,18 @@ private fun AddMemberInline(
             )
         }
 
-        if (!isAdding && searchInput.length > 2) {
+        OutlinedTextField(
-            Spacer(modifier = Modifier.height(4.dp))
+            value = searchInput,
-            ShowUserSuggestionList(
+            onValueChange = onSearchInputChange,
-                userSuggestions = userSuggestions,
+            label = { Text("Add member") },
-                onSelect = { user -> onAdd(user) },
+            placeholder = { Text("Name, npub, or NIP-05") },
-                accountViewModel = accountViewModel,
+            modifier =
-                modifier = SuggestionListDefaultHeightChat,
+                Modifier
-                onEmpty = {
+                    .fillMaxWidth()
-                    Text(
+                    .padding(horizontal = 16.dp, vertical = 8.dp),
-                        "They must have published a KeyPackage (kind:30443) to be added.",
+            singleLine = true,
-                        modifier = Modifier.padding(horizontal = 16.dp, vertical = 8.dp),
+            enabled = !isAdding,
-                        style = MaterialTheme.typography.bodySmall,
-                        color = MaterialTheme.colorScheme.onSurfaceVariant,
         )
-                },
-            )
-        }
     }
 }