feat(badges/award): swap raw pubkey textarea for user search

The award screen now collects awardees the same way other selection
screens do (AddMemberScreen pattern):
- A search OutlinedTextField wired into UserSuggestionState +
  ShowUserSuggestionList. Typing >2 chars triggers the existing user
  search pipeline.
- Selecting a suggestion adds the user to a header list of selected
  recipients (avatar, display name, NIP-05 / pubkey), each with a
  Remove button.
- Submit button disables until at least one recipient is picked.

ViewModel reduced to definition + sendPost(awardees: List<User>);
parsedPubKeys / awardeesText state removed.

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/badges/award/AwardBadgeScreen.kt

@@ -22,34 +22,47 @@ package com.vitorpamplona.amethyst.ui.screen.loggedIn.badges.award
 
 import androidx.activity.compose.BackHandler
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.consumeWindowInsets
-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.rememberScrollState
-import androidx.compose.foundation.verticalScroll
-import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.lifecycle.viewmodel.compose.viewModel
 import com.vitorpamplona.amethyst.R
+import com.vitorpamplona.amethyst.commons.model.nip05DnsIdentifiers.Nip05State
+import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.ui.navigation.navs.INav
 import com.vitorpamplona.amethyst.ui.navigation.topbars.SavingTopBar
+import com.vitorpamplona.amethyst.ui.note.UserPicture
+import com.vitorpamplona.amethyst.ui.note.creators.userSuggestions.ShowUserSuggestionList
+import com.vitorpamplona.amethyst.ui.note.creators.userSuggestions.UserSuggestionState
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.amethyst.ui.stringRes
+import com.vitorpamplona.amethyst.ui.theme.SuggestionListDefaultHeightPage
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
 
-@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun AwardBadgeScreen(
     kind: Int,
@@ -64,8 +77,19 @@ fun AwardBadgeScreen(
         vm.init(accountViewModel, kind, pubKeyHex, dTag)
     }
 
+    var searchInput by remember { mutableStateOf("") }
+    val selectedUsers = remember { mutableStateListOf<User>() }
+
+    val userSuggestions =
+        remember {
+            UserSuggestionState(accountViewModel.account, accountViewModel.nip05ClientBuilder())
+        }
+
+    DisposableEffect(Unit) {
+        onDispose { userSuggestions.reset() }
+    }
+
     BackHandler {
-        vm.cancel()
         nav.popBack()
     }
 
@@ -73,43 +97,85 @@ fun AwardBadgeScreen(
         topBar = {
             SavingTopBar(
                 titleRes = R.string.award_badge,
-                isActive = vm::canPost,
-                onCancel = {
-                    vm.cancel()
-                    nav.popBack()
-                },
+                isActive = { vm.definition != null && selectedUsers.isNotEmpty() },
+                onCancel = { nav.popBack() },
                 onPost = {
+                    val toAward = selectedUsers.toList()
                     accountViewModel.launchSigner {
-                        vm.sendPost()
+                        vm.sendPost(toAward)
                         nav.popBack()
                     }
                 },
             )
         },
-    ) { pad ->
-        Surface(
+    ) { padding ->
+        Column(
             modifier =
                 Modifier
-                    .padding(pad)
-                    .consumeWindowInsets(pad)
+                    .padding(padding)
+                    .consumeWindowInsets(padding)
                     .imePadding(),
         ) {
-            AwardBadgeBody(vm)
+            BadgeSummary(vm)
+
+            HorizontalDivider()
+
+            if (selectedUsers.isNotEmpty()) {
+                selectedUsers.toList().forEachIndexed { index, user ->
+                    SelectedUserRow(
+                        user = user,
+                        accountViewModel = accountViewModel,
+                        nav = nav,
+                        onClear = { selectedUsers.remove(user) },
+                    )
+                    if (index < selectedUsers.lastIndex) HorizontalDivider()
+                }
+                HorizontalDivider()
+            }
+
+            OutlinedTextField(
+                value = searchInput,
+                onValueChange = { newValue ->
+                    searchInput = newValue
+                    if (newValue.length > 2) {
+                        userSuggestions.processCurrentWord(newValue)
+                    } else {
+                        userSuggestions.reset()
+                    }
+                },
+                label = { Text(stringRes(R.string.award_badge_search_label)) },
+                placeholder = { Text(stringRes(R.string.award_badge_search_placeholder)) },
+                modifier =
+                    Modifier
+                        .fillMaxWidth()
+                        .padding(horizontal = 16.dp, vertical = 8.dp),
+                singleLine = true,
+            )
+
+            Spacer(modifier = Modifier.height(4.dp))
+
+            if (searchInput.length > 2) {
+                ShowUserSuggestionList(
+                    userSuggestions = userSuggestions,
+                    onSelect = { user ->
+                        if (selectedUsers.none { it.pubkeyHex == user.pubkeyHex }) {
+                            selectedUsers.add(user)
+                        }
+                        searchInput = ""
+                        userSuggestions.reset()
+                    },
+                    accountViewModel = accountViewModel,
+                    modifier = SuggestionListDefaultHeightPage,
+                )
+            }
         }
     }
 }
 
 @Composable
-private fun AwardBadgeBody(vm: AwardBadgeViewModel) {
-    val scrollState = rememberScrollState()
-
-    Column(
-        Modifier
-            .fillMaxSize()
-            .verticalScroll(scrollState)
-            .padding(16.dp),
-    ) {
-        val def = vm.definition
+private fun BadgeSummary(vm: AwardBadgeViewModel) {
+    val def = vm.definition
+    Column(modifier = Modifier.padding(horizontal = 16.dp, vertical = 12.dp)) {
         if (def == null) {
             Text(
                 text = stringRes(R.string.award_badge_loading),
@@ -118,32 +184,82 @@ private fun AwardBadgeBody(vm: AwardBadgeViewModel) {
         } else {
             Text(
                 text = def.name() ?: def.dTag(),
-                style = MaterialTheme.typography.titleLarge,
+                style = MaterialTheme.typography.titleMedium,
+                fontWeight = FontWeight.SemiBold,
             )
-            Spacer(modifier = Modifier.height(4.dp))
-            def.description()?.let {
-                Text(it, style = MaterialTheme.typography.bodyMedium)
+            def.description()?.takeIf { it.isNotBlank() }?.let {
+                Spacer(modifier = Modifier.height(2.dp))
+                Text(
+                    text = it,
+                    style = MaterialTheme.typography.bodyMedium,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    maxLines = 3,
+                    overflow = TextOverflow.Ellipsis,
+                )
+            }
+        }
+    }
+}
+
+@Composable
+private fun SelectedUserRow(
+    user: User,
+    accountViewModel: AccountViewModel,
+    nav: INav,
+    onClear: () -> Unit,
+) {
+    Row(
+        modifier =
+            Modifier
+                .fillMaxWidth()
+                .padding(horizontal = 16.dp, vertical = 8.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        UserPicture(
+            userHex = user.pubkeyHex,
+            size = 40.dp,
+            accountViewModel = accountViewModel,
+            nav = nav,
+        )
+        Column(
+            modifier = Modifier.weight(1f).padding(start = 12.dp),
+        ) {
+            Text(
+                text = user.toBestDisplayName(),
+                style = MaterialTheme.typography.bodyLarge,
+                fontWeight = FontWeight.Bold,
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis,
+            )
+            UserSecondaryLine(user)
+        }
+        TextButton(onClick = onClear) {
+            Text(stringRes(R.string.award_badge_remove_recipient))
+        }
+    }
+}
+
+@Composable
+private fun UserSecondaryLine(user: User) {
+    val nip05StateMetadata by user.nip05State().flow.collectAsStateWithLifecycle()
+
+    val text =
+        when (val state = nip05StateMetadata) {
+            is Nip05State.Exists -> {
+                val name = state.nip05.name
+                if (name == "_") state.nip05.domain else "$name@${state.nip05.domain}"
+            }
+
+            else -> {
+                user.pubkeyDisplayHex()
             }
         }
 
-        Spacer(modifier = Modifier.height(16.dp))
-
-        OutlinedTextField(
-            value = vm.awardeesText,
-            onValueChange = { vm.awardeesText = it },
-            label = { Text(stringRes(R.string.award_badge_recipients_label)) },
-            placeholder = { Text(stringRes(R.string.award_badge_recipients_placeholder)) },
-            modifier = Modifier.fillMaxWidth(),
-            minLines = 4,
-            maxLines = 10,
-        )
-
-        Spacer(modifier = Modifier.height(8.dp))
-
-        val parsed = vm.parsedPubKeys()
-        Text(
-            text = stringRes(R.string.award_badge_recipient_count, parsed.size),
-            style = MaterialTheme.typography.bodySmall,
-        )
-    }
+    Text(
+        text = text,
+        style = MaterialTheme.typography.bodySmall,
+        color = MaterialTheme.colorScheme.onSurfaceVariant,
+        maxLines = 1,
+        overflow = TextOverflow.Ellipsis,
+    )
 }

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/badges/award/AwardBadgeViewModel.kt

@@ -24,15 +24,14 @@ import androidx.compose.runtime.Stable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
-import androidx.compose.ui.text.input.TextFieldValue
 import androidx.lifecycle.ViewModel
 import com.vitorpamplona.amethyst.model.Account
 import com.vitorpamplona.amethyst.model.LocalCache
+import com.vitorpamplona.amethyst.model.User
 import com.vitorpamplona.amethyst.ui.screen.loggedIn.AccountViewModel
 import com.vitorpamplona.quartz.nip01Core.core.Address
 import com.vitorpamplona.quartz.nip01Core.core.HexKey
 import com.vitorpamplona.quartz.nip01Core.tags.people.PTag
-import com.vitorpamplona.quartz.nip19Bech32.decodePublicKeyAsHexOrNull
 import com.vitorpamplona.quartz.nip58Badges.definition.BadgeDefinitionEvent
 
 @Stable
@@ -41,7 +40,6 @@ class AwardBadgeViewModel : ViewModel() {
     lateinit var account: Account
 
     var definition by mutableStateOf<BadgeDefinitionEvent?>(null)
-    var awardeesText by mutableStateOf(TextFieldValue(""))
 
     fun init(
         accountVM: AccountViewModel,
@@ -57,26 +55,11 @@ class AwardBadgeViewModel : ViewModel() {
         definition = ev
     }
 
-    fun parsedPubKeys(): List<HexKey> =
-        awardeesText.text
-            .split('\n', ',', ' ', ';')
-            .mapNotNull { raw ->
-                val trimmed = raw.trim()
-                if (trimmed.isEmpty()) null else decodePublicKeyAsHexOrNull(trimmed)
-            }.distinct()
-
-    fun canPost(): Boolean = definition != null && parsedPubKeys().isNotEmpty()
-
-    fun cancel() {
-        awardeesText = TextFieldValue("")
-    }
-
-    suspend fun sendPost() {
+    suspend fun sendPost(awardees: List<User>) {
         val def = definition ?: return
-        val awardees = parsedPubKeys().map { PTag(it) }
         if (awardees.isEmpty()) return
 
-        account.sendBadgeAward(def, awardees)
-        cancel()
+        val pTags = awardees.map { PTag(it.pubkeyHex) }
+        account.sendBadgeAward(def, pTags)
     }
 }

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

@@ -441,9 +441,9 @@
     <string name="badge_thumb_label">Thumbnail URL (optional)</string>
     <string name="badge_thumb_placeholder">https://example.com/badge-thumb.png</string>
     <string name="award_badge_loading">Loading badge…</string>
-    <string name="award_badge_recipients_label">Recipients (npub or hex, one per line)</string>
-    <string name="award_badge_recipients_placeholder">npub1…\nnpub1…</string>
-    <string name="award_badge_recipient_count">%1$d recipient(s) will receive this badge</string>
+    <string name="award_badge_search_label">Search users</string>
+    <string name="award_badge_search_placeholder">Name, npub, or NIP-05</string>
+    <string name="award_badge_remove_recipient">Remove</string>
     <string name="badge_untitled">Untitled badge</string>
     <string name="badge_awardees_label">Awarded to %1$d</string>
     <string name="badge_award_received_title">You received a badge</string>