feat(chat): quiet the chat screen down

The chat screen put its color in the wrong places: my own bubbles were a
45% purple slab, every bubble carried a green "✓✓ 6/6" and a long relative
time, and each author line was a picture with trust scores plus a bold
hashed name inside the bubble.

- My bubbles: chatBubbleMe drops to 24% (dark) / 20% (light), a muted
  tint that carries white text.
- Footer: clock time ("9:08", "Sep 28, 9:08") instead of "32 min. ago";
  delivered ticks in the caption gray; group DMs show the k/n count only
  while someone is still missing the message. Red stays for failures.
- Authors: the face moves outside the bubble, beside the last bubble of
  each run (ChatBubbleLayout.authorAvatar, ChatAuthorAvatar), without
  score or follow badges; the name inside is a 13sp semibold label in a
  softer hash color. Applies to NIP-17/NIP-28/NIP-29 chats and cordn.
- Rhythm: 2dp between bubbles of a run, ~10dp between runs; bubbles cap
  at 78% of the row.
- Header: two overlapping faces (ChatRoomFaces), semibold title and an
  "N members" subtitle for group DMs.
- Rename: a subject change is a centered caption ("You renamed the chat
  to “X”"), shown only when the subject actually changes; day dividers
  are caption type instead of bold.
- Reaction chips: a background-colored ring instead of an outline.
- Composer: "Message" placeholder in chat composers; the send button is
  a filled accent disc once there is something to send.
- ChatScreenRenderTest renders the screen offscreen (dark | light) to
  commonsUI/build/chat-screen/chat.png; SubjectChangeTest covers the
  rename detection.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0113Y3NP1fRnbQJyrH6D6YQj

amethyst/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/chats/cordnGroup/CordnMessageRow.kt

@@ -51,7 +51,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalClipboard
 import androidx.compose.ui.platform.LocalContext
-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
@@ -59,7 +58,6 @@ import com.vitorpamplona.amethyst.commons.chats.ui.CHAT_GROUP_WINDOW_SECONDS
 import com.vitorpamplona.amethyst.commons.chats.ui.ChatBubbleLayout
 import com.vitorpamplona.amethyst.commons.chats.ui.ChatDivisor
 import com.vitorpamplona.amethyst.commons.chats.ui.ChatGroupPosition
-import com.vitorpamplona.amethyst.commons.chats.ui.UserDisplayNameLayout
 import com.vitorpamplona.amethyst.commons.chats.ui.jumboEmojiCount
 import com.vitorpamplona.amethyst.commons.chats.ui.jumboEmojiFontSize
 import com.vitorpamplona.amethyst.commons.cordn.CordnMentions
@@ -100,6 +98,9 @@ import com.vitorpamplona.amethyst.commons.ui.note.UserPicture
 import com.vitorpamplona.amethyst.commons.ui.note.elements.TimeAgoStyle
 import com.vitorpamplona.amethyst.commons.ui.note.elements.ToggleableTimeAgoText
 import com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.feed.ActionTile
+import com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.feed.ChatAuthorAvatar
+import com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.feed.ChatAuthorNameSize
+import com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.feed.ChatAuthorNameWeight
 import com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.feed.ChatChipFlowRow
 import com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.feed.MoreActionsToggle
 import com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.feed.ReactionChip
@@ -256,6 +257,13 @@ internal fun CordnMessageRow(
                     null
                 },
             drawAuthorLine = { CordnAuthorLine(message.envelope.pubKey, accountViewModel, nav) },
+            // Everyone else's face sits beside their run, as in every other group chat.
+            authorAvatar =
+                if (isMine) {
+                    null
+                } else {
+                    { ChatAuthorAvatar(message.envelope.pubKey, accountViewModel) { nav.nav(Route.Profile(message.envelope.pubKey)) } }
+                },
         ) { bgColor ->
             CordnBubbleContents(
                 message = message,
@@ -356,10 +364,9 @@ private fun CordnBubbleContents(
 }
 
 /**
- * Name and face on the first bubble of a burst, in the shared chat author layout — so a
- * cordn sender is drawn exactly like a DM sender, colour included. [authorNameColorFor]
- * derives a stable hue from the pubkey, which is what makes authors scannable in a
- * fast-moving room.
+ * Name on the first bubble of a burst, styled like a DM sender's, colour included — the
+ * face sits beside the burst ([ChatAuthorAvatar]). [authorNameColorFor] derives a stable
+ * hue from the pubkey, which is what makes authors scannable in a fast-moving room.
  *
  * [observeUserNameByHex] falls back to a hex prefix until the profile arrives. Looking a
  * sender up for a display name is safe: a profile is public relay data the cache already
@@ -375,24 +382,13 @@ private fun CordnAuthorLine(
     val isLightTheme = MaterialTheme.colorScheme.isLight
     val nameColor = remember(pubKey, isLightTheme) { authorNameColorFor(pubKey, isLightTheme) }
 
-    UserDisplayNameLayout(
-        picture = {
-            UserPicture(
-                userHex = pubKey,
-                size = Size20dp,
-                accountViewModel = accountViewModel,
-                nav = nav,
-            )
-        },
-        name = {
-            Text(
-                text = name,
-                color = nameColor,
-                fontWeight = FontWeight.Bold,
-                maxLines = 1,
-                overflow = TextOverflow.Ellipsis,
-            )
-        },
+    Text(
+        text = name,
+        color = nameColor,
+        fontWeight = ChatAuthorNameWeight,
+        fontSize = ChatAuthorNameSize,
+        maxLines = 1,
+        overflow = TextOverflow.Ellipsis,
     )
 }
 

commonsUI/src/commonMain/composeResources/values/strings.xml

@@ -407,6 +407,9 @@
     <string name="could_not_decrypt_the_message">Could not decrypt the message</string>
     <string name="chat_preview_decrypting">Decrypting…</string>
     <string name="chat_preview_you_prefix">You: %1$s</string>
+    <string name="chat_subject_changed_by">%1$s renamed the chat to “%2$s”</string>
+    <string name="chat_subject_changed_by_you">You renamed the chat to “%1$s”</string>
+    <string name="chat_composer_hint">Message</string>
     <string name="chat_preview_photo">Photo</string>
     <string name="chat_preview_video">Video</string>
     <string name="chat_preview_note">Shared a note</string>
@@ -4316,6 +4319,10 @@
     <string name="marmot_group_disbanded_toast">Group disbanded</string>
     <string name="marmot_group_disbanding_toast">Ending the group. It finishes once the group agrees.</string>
     <string name="marmot_group_info_updated">Group info updated</string>
+    <plurals name="chat_room_member_count">
+        <item quantity="one">%1$d member</item>
+        <item quantity="other">%1$d members</item>
+    </plurals>
     <plurals name="marmot_member_count">
         <item quantity="one">%1$d member</item>
         <item quantity="other">%1$d members</item>

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/chats/ui/ChatBubbleLayout.kt

@@ -43,6 +43,7 @@ import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
@@ -103,6 +104,10 @@ private val ChatChipOverlapArrangement = Arrangement.spacedBy((-12).dp)
 // already has 6dp bottom padding; the chips poke ~12dp in, so ~8dp more clears them.
 private val ChatChipOverlapReserve = 8.dp
 
+// The column the author face sits in, beside a group chat's bubbles, and its gap to them.
+private val ChatAuthorGutterModifier = Modifier.width(28.dp)
+private val ChatAuthorGutterGap = Modifier.width(6.dp)
+
 // Swipe-to-reply: releasing past the threshold fires the reply; the bubble never
 // drags further than the max.
 private val SwipeReplyThreshold = 56.dp
@@ -133,6 +138,10 @@ fun ChatBubbleLayout(
     // status glyphs). Null skips it entirely.
     footerRow: (@Composable () -> Unit)? = null,
     drawAuthorLine: @Composable () -> Unit,
+    // The author's face in a group chat, drawn OUTSIDE the bubble, beside the last bubble of
+    // the author's run (the other bubbles of the run keep its width as an indent so the run
+    // lines up). Null for one-on-one chats, own messages and quotes: no gutter at all.
+    authorAvatar: (@Composable () -> Unit)? = null,
     inner: @Composable (MutableState<Color>) -> Unit,
 ) {
     val loggedInColors = MaterialTheme.colorScheme.chatBubbleMe
@@ -306,7 +315,14 @@ fun ChatBubbleLayout(
         Row(
             modifier = (if (innerQuote) Modifier else Modifier.fillMaxWidth()).then(swipeModifier),
             horizontalArrangement = if (isLoggedInUser) Arrangement.End else Arrangement.Start,
+            verticalAlignment = Alignment.Bottom,
         ) {
+            if (authorAvatar != null && !isLoggedInUser && !innerQuote) {
+                Box(ChatAuthorGutterModifier) {
+                    if (groupPosition.isLastOfGroup) authorAvatar()
+                }
+                Spacer(ChatAuthorGutterGap)
+            }
             InnerChatBubble(
                 isLoggedInUser = isLoggedInUser,
                 innerQuote = innerQuote,

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/chats/ui/ChatDivisor.kt

@@ -21,8 +21,11 @@
 package com.vitorpamplona.amethyst.commons.chats.ui
 
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
 import androidx.compose.material3.DividerDefaults
 import androidx.compose.material3.HorizontalDivider
+import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
@@ -30,11 +33,19 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.isSpecified
 import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.commons.ui.theme.DividerThickness
-import com.vitorpamplona.amethyst.commons.ui.theme.Font14SP
+import com.vitorpamplona.amethyst.commons.ui.theme.Font12SP
 import com.vitorpamplona.amethyst.commons.ui.theme.HalfPadding
 import com.vitorpamplona.amethyst.commons.ui.theme.StdPadding
+import com.vitorpamplona.amethyst.commons.ui.theme.placeholderText
 
+/**
+ * A day (or status) divider between chat messages: hairlines either side of a caption-sized
+ * label. Caption type, not bold: it marks where the conversation crossed a day, it is not a
+ * heading the eye should land on before the messages.
+ */
 @Composable
 fun ChatDivisor(
     info: String,
@@ -53,9 +64,9 @@ fun ChatDivisor(
         )
         Text(
             text = info,
-            fontWeight = FontWeight.Bold,
-            fontSize = Font14SP,
-            color = color,
+            fontWeight = FontWeight.Medium,
+            fontSize = Font12SP,
+            color = if (color.isSpecified) color else MaterialTheme.colorScheme.placeholderText,
             modifier = HalfPadding,
         )
         HorizontalDivider(
@@ -65,3 +76,21 @@ fun ChatDivisor(
         )
     }
 }
+
+/**
+ * Something that happened to the conversation rather than a message in it (a rename): one
+ * centered line in caption type, no bubble and no rules, so it never competes with what
+ * people said.
+ */
+@Composable
+fun ChatSystemCaption(text: String) {
+    Text(
+        text = text,
+        fontSize = Font12SP,
+        color = MaterialTheme.colorScheme.placeholderText,
+        textAlign = TextAlign.Center,
+        modifier = ChatSystemCaptionModifier,
+    )
+}
+
+private val ChatSystemCaptionModifier = Modifier.fillMaxWidth().padding(horizontal = 24.dp, vertical = 10.dp)

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/chats/ui/NewDateOrSubjectDivisor.kt

@@ -21,19 +21,33 @@
 package com.vitorpamplona.amethyst.commons.chats.ui
 
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
 import com.vitorpamplona.amethyst.commons.model.Note
+import com.vitorpamplona.amethyst.commons.relayClient.user.observeUserName
 import com.vitorpamplona.amethyst.commons.resources.Res
+import com.vitorpamplona.amethyst.commons.resources.chat_subject_changed_by
+import com.vitorpamplona.amethyst.commons.resources.chat_subject_changed_by_you
 import com.vitorpamplona.amethyst.commons.resources.never
 import com.vitorpamplona.amethyst.commons.resources.today
 import com.vitorpamplona.amethyst.commons.ui.note.dateFormatter
 import com.vitorpamplona.amethyst.commons.ui.stringRes
+import com.vitorpamplona.amethyst.commons.viewmodels.AccountViewModel
+import com.vitorpamplona.quartz.nip01Core.core.Event
 import com.vitorpamplona.quartz.nip14Subject.subject
 
+/**
+ * The quiet rows between messages: a day divider when the date changes, and a one-line caption
+ * when a message renames the conversation ("Alice renamed the chat to “Product”").
+ *
+ * The rename used to be a bold divider holding just the new name, which read like a section
+ * heading and said nothing about what happened. Now it says who did what, in caption type.
+ */
 @Composable
 fun NewDateOrSubjectDivisor(
     previous: Note?,
     note: Note,
+    accountViewModel: AccountViewModel,
 ) {
     if (previous == null) return
 
@@ -43,17 +57,35 @@ fun NewDateOrSubjectDivisor(
     val prevDate = remember(previous) { dateFormatter(previous.event?.createdAt, never, today) }
     val date = remember(note) { dateFormatter(note.event?.createdAt, never, today) }
 
-    val subject = remember(note) { note.event?.subject() }
-
     if (prevDate != date) {
-        if (subject != null) {
-            ChatDivisor("$date - $subject")
-        } else {
-            ChatDivisor(date)
-        }
-    } else {
-        if (subject != null) {
-            ChatDivisor(subject)
-        }
+        ChatDivisor(date)
+    }
+
+    val newSubject = remember(previous, note) { subjectChangeOf(previous.event, note.event) }
+    if (newSubject != null) {
+        val author = note.author
+        val text =
+            when {
+                author == null -> newSubject
+                accountViewModel.isLoggedUser(author) -> stringRes(Res.string.chat_subject_changed_by_you, newSubject)
+                else -> {
+                    val name by observeUserName(author, accountViewModel)
+                    stringRes(Res.string.chat_subject_changed_by, name, newSubject)
+                }
+            }
+        ChatSystemCaption(text)
     }
 }
+
+/**
+ * The subject [newer] sets, or null when it sets none or repeats the one [older] already carried.
+ * Some clients tag every message of a named group with its subject; without the repeat check each
+ * of those would announce a rename.
+ */
+fun subjectChangeOf(
+    older: Event?,
+    newer: Event?,
+): String? {
+    val subject = newer?.subject()?.trim()?.ifBlank { null } ?: return null
+    return if (older?.subject()?.trim() == subject) null else subject
+}

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/chats/ui/ThinSendButton.kt

@@ -20,16 +20,29 @@
  */
 package com.vitorpamplona.amethyst.commons.chats.ui
 
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.commons.icons.symbols.Icon
 import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbols
 import com.vitorpamplona.amethyst.commons.resources.Res
 import com.vitorpamplona.amethyst.commons.resources.accessibility_send
 import com.vitorpamplona.amethyst.commons.ui.stringRes
 import com.vitorpamplona.amethyst.commons.ui.theme.Size25Modifier
+import com.vitorpamplona.amethyst.commons.ui.theme.placeholderText
 
+/**
+ * The composer's send button. Idle it is a quiet glyph; once there is something to send it
+ * becomes a filled accent disc, so the one action the screen is waiting for is the thing
+ * that stands out, and an outline-gray arrow no longer looks disabled when it is not.
+ */
 @Composable
 fun ThinSendButton(
     isActive: Boolean,
@@ -41,10 +54,28 @@ fun ThinSendButton(
         // modifier = modifier,
         onClick = onClick,
     ) {
-        Icon(
-            symbol = MaterialSymbols.AutoMirrored.Send,
-            contentDescription = stringRes(id = Res.string.accessibility_send),
-            modifier = Size25Modifier,
-        )
+        if (isActive) {
+            Box(
+                contentAlignment = Alignment.Center,
+                modifier = SendDiscModifier.background(MaterialTheme.colorScheme.primary, CircleShape),
+            ) {
+                Icon(
+                    symbol = MaterialSymbols.AutoMirrored.Send,
+                    contentDescription = stringRes(id = Res.string.accessibility_send),
+                    tint = MaterialTheme.colorScheme.onPrimary,
+                    modifier = SendGlyphModifier,
+                )
+            }
+        } else {
+            Icon(
+                symbol = MaterialSymbols.AutoMirrored.Send,
+                contentDescription = stringRes(id = Res.string.accessibility_send),
+                tint = MaterialTheme.colorScheme.placeholderText,
+                modifier = Size25Modifier,
+            )
+        }
     }
 }
+
+private val SendDiscModifier = Modifier.size(36.dp)
+private val SendGlyphModifier = Modifier.size(19.dp)

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/feed/ChatDeliveryTicks.kt

@@ -358,7 +358,6 @@ private fun RenderDeliveryTicks(
     onRetry: () -> Unit,
 ) {
     val pendingColor = MaterialTheme.colorScheme.placeholderText
-    val deliveredColor = MaterialTheme.colorScheme.allGoodColor
 
     // The send's own lifecycle outranks relay acceptance: until the event has
     // been handed to the relay pool there is nothing for a relay to have
@@ -398,19 +397,23 @@ private fun RenderDeliveryTicks(
     // the sender's own self-copy wrap only shows in the detail dialog.
     val others = delivery.otherRecipients
     if (others != null && others.size > 1) {
-        // Group DM: double check once everyone got it, plus a delivered count.
+        // Group DM: a double check once everyone got it. The k/n count only shows while
+        // someone is still missing it: "6/6" on every bubble restated the double check in a
+        // bright color, while "4/6" is the one case worth reading.
         val deliveredCount = others.count { it.isDelivered }
         Row(verticalAlignment = Alignment.CenterVertically) {
             DeliveryLadderTick(
                 pending = deliveredCount == 0 && !seenSomewhere,
                 fullyAccepted = delivery.isFullyAccepted,
             )
-            Text(
-                text = "$deliveredCount/${others.size}",
-                fontSize = Font12SP,
-                color = if (delivery.isFullyAccepted) deliveredColor else pendingColor,
-                maxLines = 1,
-            )
+            if (!delivery.isFullyAccepted) {
+                Text(
+                    text = "$deliveredCount/${others.size}",
+                    fontSize = Font12SP,
+                    color = pendingColor,
+                    maxLines = 1,
+                )
+            }
         }
         return
     }
@@ -433,8 +436,11 @@ private fun DeliveryLadderTick(
         pending ->
             TickIcon(MaterialSymbols.Schedule, Res.string.chat_delivery_pending, MaterialTheme.colorScheme.placeholderText)
 
+        // Same caption gray as the time beside it: the single vs double check already says
+        // how far it got, and a green glyph on every bubble was a third accent on the screen.
+        // Color is kept for the states that need the reader: rejected and failed.
         fullyAccepted ->
-            TickIcon(MaterialSymbols.DoneAll, Res.string.chat_delivery_delivered_all, MaterialTheme.colorScheme.allGoodColor)
+            TickIcon(MaterialSymbols.DoneAll, Res.string.chat_delivery_delivered_all, MaterialTheme.colorScheme.placeholderText)
 
         else ->
             TickIcon(MaterialSymbols.Done, Res.string.chat_delivery_accepted, MaterialTheme.colorScheme.placeholderText)

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/feed/ChatFeedView.kt

@@ -269,7 +269,7 @@ fun ChatFeedLoaded(
                     // before the bubble. Composing it after put the header below its own message —
                     // i.e. visually heading the NEXT (newer) message while showing this one's date,
                     // which is why a "Jul 1, 2025" header sat on top of a Sep 23 bubble.
-                    NewDateOrSubjectDivisor(older, item)
+                    NewDateOrSubjectDivisor(older, item, accountViewModel)
 
                     // Per-relay paging markers for the gap toward the next-older message. Older items sit
                     // ABOVE newer ones under `reverseLayout`, so that gap is the space above this bubble —

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/feed/ChatMessageCompose.kt

@@ -386,6 +386,18 @@ fun NormalChatNote(
                 nav,
             )
         },
+        // Group chats put each author's face beside their run; one-on-one chats and my own
+        // messages have none (drawAuthorInfo is already false for both).
+        authorAvatar =
+            if (drawAuthorInfo && !isLoggedInUser && !innerQuote) {
+                {
+                    note.author?.let { author ->
+                        ChatAuthorAvatar(author.pubkeyHex, accountViewModel) { nav.nav(routeFor(author)) }
+                    }
+                }
+            } else {
+                null
+            },
     ) { bgColor ->
         MessageBubbleLines(
             note,

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/feed/ChatReactionChips.kt

@@ -75,7 +75,6 @@ import com.vitorpamplona.amethyst.commons.ui.theme.Font12SP
 import com.vitorpamplona.amethyst.commons.ui.theme.Size14Modifier
 import com.vitorpamplona.amethyst.commons.ui.theme.bitcoinColor
 import com.vitorpamplona.amethyst.commons.ui.theme.grayText
-import com.vitorpamplona.amethyst.commons.ui.theme.subtleBorder
 import com.vitorpamplona.amethyst.commons.viewmodels.AccountViewModel
 import com.vitorpamplona.quartz.nip30CustomEmoji.CustomEmoji
 import kotlinx.collections.immutable.ImmutableList
@@ -212,6 +211,15 @@ fun ChatReactionChips(
     }
 }
 
+/**
+ * The edge of an engagement chip: a ring in the screen's background color rather than a
+ * hairline. Riding the bubble's border, the ring cuts the chip out of the bubble cleanly;
+ * the outlined pill it replaces drew one more line on every bubble that had a reaction.
+ * A chip I'm part of says so with its accent fill alone.
+ */
+@Composable
+fun chatChipRing(): BorderStroke = BorderStroke(2.dp, MaterialTheme.colorScheme.background)
+
 /**
  * The strip of engagement chips that rides a chat bubble's bottom border. Shared so
  * every chat surface lays its chips out identically — [ChatReactionChips] fills it from
@@ -276,7 +284,7 @@ private fun MinichatChip(
     Surface(
         shape = ButtonBorder,
         color = MaterialTheme.colorScheme.surfaceVariant,
-        border = BorderStroke(1.dp, MaterialTheme.colorScheme.subtleBorder),
+        border = chatChipRing(),
         // Plain clickable (not the Surface onClick overload) so the chip keeps its
         // content height instead of being padded to the 48dp minimum touch target,
         // which would drop it below the bubble border the reaction chips ride.
@@ -316,17 +324,10 @@ fun ReactionChipView(
             MaterialTheme.colorScheme.surfaceVariant
         }
 
-    val border =
-        if (chip.includesMe) {
-            BorderStroke(1.dp, MaterialTheme.colorScheme.primary.copy(alpha = 0.60f))
-        } else {
-            BorderStroke(1.dp, MaterialTheme.colorScheme.subtleBorder)
-        }
-
     Surface(
         shape = ButtonBorder,
         color = background,
-        border = border,
+        border = chatChipRing(),
         modifier =
             Modifier
                 .clip(ButtonBorder)
@@ -355,7 +356,7 @@ private fun ZapChip(
     Surface(
         shape = ButtonBorder,
         color = MaterialTheme.colorScheme.surfaceVariant,
-        border = BorderStroke(1.dp, MaterialTheme.colorScheme.subtleBorder),
+        border = chatChipRing(),
         // Plain clickable (not the Surface onClick overload) so the chip keeps its
         // content height instead of being padded to the 48dp minimum touch target,
         // which would drop it below the bubble border the reaction chips ride.
@@ -385,7 +386,7 @@ private fun PendingZapChip() {
     Surface(
         shape = ButtonBorder,
         color = MaterialTheme.colorScheme.surfaceVariant,
-        border = BorderStroke(1.dp, MaterialTheme.colorScheme.subtleBorder),
+        border = chatChipRing(),
     ) {
         ChipContentRow {
             ZappedIcon(Size14Modifier)

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/feed/ChatTimeAgo.kt

@@ -41,8 +41,7 @@ import com.vitorpamplona.amethyst.commons.resources.relay_group_pinned_content_d
 import com.vitorpamplona.amethyst.commons.ui.navigation.navs.INav
 import com.vitorpamplona.amethyst.commons.ui.note.elements.DisplayLocation
 import com.vitorpamplona.amethyst.commons.ui.note.elements.DisplayPoW
-import com.vitorpamplona.amethyst.commons.ui.note.elements.TimeAgoStyle
-import com.vitorpamplona.amethyst.commons.ui.note.elements.ToggleableTimeAgoText
+import com.vitorpamplona.amethyst.commons.ui.note.timeAbsoluteNoDot
 import com.vitorpamplona.amethyst.commons.ui.note.timeAheadNoDot
 import com.vitorpamplona.amethyst.commons.ui.stringRes
 import com.vitorpamplona.amethyst.commons.ui.theme.Font12SP
@@ -54,17 +53,21 @@ import com.vitorpamplona.quartz.nip04Dm.messages.EncryptedDmEvent
 import com.vitorpamplona.quartz.nip13Pow.strongPoWOrNull
 import com.vitorpamplona.quartz.nip40Expiration.expiration
 
+/**
+ * The time on a chat bubble, as a clock time ("9:08"; "Sep 28, 9:08" once it is not today).
+ *
+ * Not relative: "32 min. ago" on every bubble was long, kept changing under the reader, and
+ * made a column of near-identical captions. A conversation is read by when things were said.
+ * The chat time is wrapped in a tap target that opens the relay/delivery dialog, so it is
+ * plain text with no toggle of its own.
+ */
 @Composable
 fun ChatTimeAgo(baseNote: Note) {
-    ToggleableTimeAgoText(
-        timestamp = baseNote.createdAt() ?: 0L,
-        style = TimeAgoStyle.Short,
+    Text(
+        text = timeAbsoluteNoDot(baseNote.createdAt() ?: 0L),
         color = MaterialTheme.colorScheme.placeholderText,
         fontSize = Font12SP,
-        // The chat time is wrapped in a tap target that opens the relay/delivery dialog,
-        // so it must not steal the tap to toggle relative/absolute. The absolute time is
-        // shown in that dialog instead.
-        toggleable = false,
+        maxLines = 1,
     )
 }
 

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/feed/DrawAuthorInfo.kt

@@ -20,20 +20,23 @@
  */
 package com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.feed
 
+import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
 import com.vitorpamplona.amethyst.commons.buzz.ui.BuzzAgentLabel
 import com.vitorpamplona.amethyst.commons.buzz.ui.rememberBuzzContextualName
-import com.vitorpamplona.amethyst.commons.chats.ui.UserDisplayNameLayout
 import com.vitorpamplona.amethyst.commons.model.EmptyTagList
 import com.vitorpamplona.amethyst.commons.model.Note
 import com.vitorpamplona.amethyst.commons.model.User
@@ -42,17 +45,19 @@ import com.vitorpamplona.amethyst.commons.model.nip29RelayGroups.RelayGroupChann
 import com.vitorpamplona.amethyst.commons.relayClient.user.observeUserDisplayNickname
 import com.vitorpamplona.amethyst.commons.relayClient.user.observeUserInfo
 import com.vitorpamplona.amethyst.commons.ui.navigation.navs.INav
-import com.vitorpamplona.amethyst.commons.ui.note.FollowingIcon
 import com.vitorpamplona.amethyst.commons.ui.note.InnerUserPicture
-import com.vitorpamplona.amethyst.commons.ui.note.ObserveAndRenderUserCards
-import com.vitorpamplona.amethyst.commons.ui.note.WatchUserFollows
+import com.vitorpamplona.amethyst.commons.ui.note.LoadUser
 import com.vitorpamplona.amethyst.commons.ui.richtext.CreateTextWithEmoji
-import com.vitorpamplona.amethyst.commons.ui.theme.Size20dp
-import com.vitorpamplona.amethyst.commons.ui.theme.Size5Modifier
 import com.vitorpamplona.amethyst.commons.ui.theme.isLight
 import com.vitorpamplona.amethyst.commons.viewmodels.AccountViewModel
 import com.vitorpamplona.quartz.buzz.identityNames.IdentityNamePolicy
+import com.vitorpamplona.quartz.nip01Core.core.HexKey
 
+/**
+ * The author's name at the top of the first bubble of their run. Name only: the face sits
+ * outside the bubble, beside the run's last bubble ([ChatAuthorAvatar]), so the bubble keeps
+ * to what was said instead of opening with a picture and its badges.
+ */
 @Composable
 fun DrawAuthorInfo(
     baseNote: Note,
@@ -77,7 +82,9 @@ fun DrawAuthorInfo(
 /**
  * A stable, pubkey-derived name color so authors are scannable in fast-moving
  * group rooms. The hue comes from the pubkey; saturation/lightness are tuned per
- * theme so every hue stays readable on the "them" bubble fill.
+ * theme so every hue stays readable on the "them" bubble fill. Saturation is kept
+ * low: the hue only has to tell two names apart, and at full strength every author
+ * line was another bright color competing with the message under it.
  */
 fun authorNameColorFor(
     pubkeyHex: String,
@@ -85,9 +92,39 @@ fun authorNameColorFor(
 ): Color {
     val hue = (pubkeyHex.take(6).toIntOrNull(16) ?: pubkeyHex.hashCode()).mod(360).toFloat()
     return if (isLightTheme) {
-        Color.hsl(hue, saturation = 0.70f, lightness = 0.35f)
+        Color.hsl(hue, saturation = 0.45f, lightness = 0.38f)
     } else {
-        Color.hsl(hue, saturation = 0.55f, lightness = 0.70f)
+        Color.hsl(hue, saturation = 0.38f, lightness = 0.74f)
+    }
+}
+
+/** Size of the author face beside a chat bubble. */
+val ChatAuthorAvatarSize = 28.dp
+
+/** Weight and size of the author name inside a bubble: a label over the message, not a heading. */
+val ChatAuthorNameWeight = FontWeight.SemiBold
+val ChatAuthorNameSize = 13.sp
+
+/**
+ * The author's face beside the last bubble of their run in a group chat. Plain picture: the
+ * trust score and follow mark it used to carry inside the bubble were unreadable at this size
+ * and live on the profile one tap away.
+ */
+@Composable
+fun ChatAuthorAvatar(
+    userHex: HexKey,
+    accountViewModel: AccountViewModel,
+    onClick: () -> Unit,
+) {
+    LoadUser(baseUserHex = userHex) { user ->
+        val userState = user?.let { observeUserInfo(it, accountViewModel).value }
+        InnerUserPicture(
+            userHex = userHex,
+            userPicture = userState?.info?.picture,
+            userName = userState?.info?.bestName(),
+            size = ChatAuthorAvatarSize,
+            modifier = Modifier.clip(CircleShape).clickable(onClick = onClick),
+        )
     }
 }
 
@@ -116,41 +153,21 @@ private fun WatchAndDisplayUser(
             authorNameColorFor(author.pubkeyHex, isLightTheme)
         }
 
-    UserDisplayNameLayout(
-        picture = {
-            InnerUserPicture(
-                userHex = author.pubkeyHex,
-                userPicture = userState?.info?.picture,
-                userName = displayName,
-                size = Size20dp,
-                modifier = Modifier,
-            )
-
-            WatchUserFollows(author.pubkeyHex, accountViewModel) { newFollowingState ->
-                if (newFollowingState) {
-                    FollowingIcon(Size5Modifier)
-                }
-            }
-
-            ObserveAndRenderUserCards(author, Size20dp, Modifier.align(Alignment.BottomCenter), accountViewModel)
-        },
-        name = {
-            Row(
-                verticalAlignment = Alignment.CenterVertically,
-                horizontalArrangement = Arrangement.spacedBy(6.dp),
-            ) {
-                CreateTextWithEmoji(
-                    text = displayName ?: author.pubkeyDisplayHex(),
-                    tags = (if (nameOverride == null && petName != null) nickname?.tags else userState?.tags) ?: EmptyTagList,
-                    color = nameColor,
-                    maxLines = 1,
-                    fontWeight = FontWeight.Bold,
-                    modifier = Modifier.weight(1f, fill = false),
-                )
-                // An agent says so, and whose it is (its owner comes from the NIP-OA tag on its kind 0),
-                // unless its contextual name already does.
-                BuzzAgentLabel(author, userState?.nipOaOwner, accountViewModel, showOwner = !qualified)
-            }
-        },
-    )
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        horizontalArrangement = Arrangement.spacedBy(6.dp),
+    ) {
+        CreateTextWithEmoji(
+            text = displayName ?: author.pubkeyDisplayHex(),
+            tags = (if (nameOverride == null && petName != null) nickname?.tags else userState?.tags) ?: EmptyTagList,
+            color = nameColor,
+            maxLines = 1,
+            fontWeight = ChatAuthorNameWeight,
+            fontSize = ChatAuthorNameSize,
+            modifier = Modifier.weight(1f, fill = false),
+        )
+        // An agent says so, and whose it is (its owner comes from the NIP-OA tag on its kind 0),
+        // unless its contextual name already does.
+        BuzzAgentLabel(author, userState?.nipOaOwner, accountViewModel, showOwner = !qualified)
+    }
 }

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/marmotGroup/MarmotGroupChatView.kt

@@ -53,6 +53,7 @@ import com.vitorpamplona.amethyst.commons.model.cache.LocalCache
 import com.vitorpamplona.amethyst.commons.model.marmotGroupLastReadRoute
 import com.vitorpamplona.amethyst.commons.resources.Res
 import com.vitorpamplona.amethyst.commons.resources.cancel
+import com.vitorpamplona.amethyst.commons.resources.chat_composer_hint
 import com.vitorpamplona.amethyst.commons.resources.marmot_awaiting_reinvite
 import com.vitorpamplona.amethyst.commons.resources.marmot_group_composer_disbanding
 import com.vitorpamplona.amethyst.commons.resources.marmot_group_composer_leaving
@@ -63,7 +64,6 @@ import com.vitorpamplona.amethyst.commons.resources.marmot_out_of_sync_body
 import com.vitorpamplona.amethyst.commons.resources.marmot_out_of_sync_confirm_body
 import com.vitorpamplona.amethyst.commons.resources.marmot_out_of_sync_confirm_title
 import com.vitorpamplona.amethyst.commons.resources.marmot_out_of_sync_reset
-import com.vitorpamplona.amethyst.commons.resources.reply_here
 import com.vitorpamplona.amethyst.commons.service.uploads.SelectedMedia
 import com.vitorpamplona.amethyst.commons.ui.actions.UrlUserTagOutputTransformation
 import com.vitorpamplona.amethyst.commons.ui.actions.uploads.SelectFromGallery
@@ -286,7 +286,7 @@ fun MarmotGroupMessageComposer(
             shape = EditFieldBorder,
             placeholder = {
                 Text(
-                    text = stringRes(Res.string.reply_here),
+                    text = stringRes(Res.string.chat_composer_hint),
                     color = MaterialTheme.colorScheme.placeholderText,
                 )
             },

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/privateDM/header/RenderRoomTopBar.kt

@@ -21,6 +21,7 @@
 package com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.privateDM.header
 
 import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -51,15 +52,17 @@ import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbols
 import com.vitorpamplona.amethyst.commons.resources.Res
 import com.vitorpamplona.amethyst.commons.resources.call_video
 import com.vitorpamplona.amethyst.commons.resources.call_voice
+import com.vitorpamplona.amethyst.commons.resources.chat_room_member_count
 import com.vitorpamplona.amethyst.commons.resources.edits_the_channel_metadata
 import com.vitorpamplona.amethyst.commons.resources.messages_group_descriptor
 import com.vitorpamplona.amethyst.commons.ui.navigation.navs.INav
 import com.vitorpamplona.amethyst.commons.ui.navigation.topbars.TopBarExtensibleWithBackButton
+import com.vitorpamplona.amethyst.commons.ui.note.ChatRoomFaces
 import com.vitorpamplona.amethyst.commons.ui.note.ClickableUserPicture
 import com.vitorpamplona.amethyst.commons.ui.note.LoadUser
-import com.vitorpamplona.amethyst.commons.ui.note.NonClickableUserPictures
 import com.vitorpamplona.amethyst.commons.ui.note.UserCompose
 import com.vitorpamplona.amethyst.commons.ui.note.UsernameDisplay
+import com.vitorpamplona.amethyst.commons.ui.pluralStringRes
 import com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.privateDM.header.RoomNameOnlyDisplay
 import com.vitorpamplona.amethyst.commons.ui.stringRes
 import com.vitorpamplona.amethyst.commons.ui.theme.DividerThickness
@@ -67,6 +70,7 @@ import com.vitorpamplona.amethyst.commons.ui.theme.DoubleHorzSpacer
 import com.vitorpamplona.amethyst.commons.ui.theme.Size34dp
 import com.vitorpamplona.amethyst.commons.ui.theme.StdPadding
 import com.vitorpamplona.amethyst.commons.ui.theme.ZeroPadding
+import com.vitorpamplona.amethyst.commons.ui.theme.placeholderText
 import com.vitorpamplona.amethyst.commons.viewmodels.AccountViewModel
 import com.vitorpamplona.quartz.nip17Dm.base.ChatroomKey
 import kotlinx.collections.immutable.toPersistentList
@@ -92,7 +96,7 @@ fun RenderRoomTopBar(
 
                         Spacer(modifier = DoubleHorzSpacer)
 
-                        UsernameDisplay(baseUser, Modifier.weight(1f), fontWeight = FontWeight.Normal, accountViewModel = accountViewModel)
+                        UsernameDisplay(baseUser, Modifier.weight(1f), fontWeight = FontWeight.SemiBold, accountViewModel = accountViewModel)
 
                         if (onVideoCallClick != null) {
                             IconButton(
@@ -141,13 +145,26 @@ fun RenderRoomTopBar(
         TopBarExtensibleWithBackButton(
             title = {
                 Row(verticalAlignment = Alignment.CenterVertically) {
-                    NonClickableUserPictures(
-                        room = room,
-                        accountViewModel = accountViewModel,
+                    // Two overlapping faces without badges, as on the Messages list: a 2x2
+                    // mosaic with a trust score on each face is unreadable at header size.
+                    ChatRoomFaces(
+                        userHexList = remember(room) { room.users.toList() },
                         size = Size34dp,
+                        accountViewModel = accountViewModel,
                     )
 
-                    RoomNameOnlyDisplay(room, Modifier.padding(start = 10.dp).weight(1f), FontWeight.Normal, accountViewModel)
+                    // The name, then who is in it: a group header with only a name gave no
+                    // hint of how many people would read what you type.
+                    Column(Modifier.padding(start = 10.dp).weight(1f)) {
+                        RoomNameOnlyDisplay(room, Modifier, FontWeight.SemiBold, accountViewModel)
+                        Text(
+                            // room.users is everyone but me.
+                            text = pluralStringRes(Res.plurals.chat_room_member_count, room.users.size + 1, room.users.size + 1),
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.placeholderText,
+                            maxLines = 1,
+                        )
+                    }
 
                     if (onVideoCallClick != null) {
                         IconButton(

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/privateDM/send/PrivateMessageEditFieldRow.kt

@@ -54,8 +54,8 @@ import com.vitorpamplona.amethyst.commons.model.navigation.routeFor
 import com.vitorpamplona.amethyst.commons.nip30CustomEmojis.ui.ShowEmojiSuggestionList
 import com.vitorpamplona.amethyst.commons.resources.Res
 import com.vitorpamplona.amethyst.commons.resources.cancel
+import com.vitorpamplona.amethyst.commons.resources.chat_composer_hint
 import com.vitorpamplona.amethyst.commons.resources.recipient_missing_dm_relays
-import com.vitorpamplona.amethyst.commons.resources.reply_here
 import com.vitorpamplona.amethyst.commons.resources.retry_without_encryption
 import com.vitorpamplona.amethyst.commons.resources.this_message_will_disappear_in
 import com.vitorpamplona.amethyst.commons.resources.upload_without_encryption_warning
@@ -226,7 +226,7 @@ fun EditField(
         modifier = Modifier.fillMaxWidth(),
         placeholder = {
             Text(
-                text = stringRes(Res.string.reply_here),
+                text = stringRes(Res.string.chat_composer_hint),
                 color = MaterialTheme.colorScheme.placeholderText,
             )
         },

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/publicChannels/concord/ConcordChannelScreen.kt

@@ -66,6 +66,7 @@ import com.vitorpamplona.amethyst.commons.nip30CustomEmojis.ui.ShowEmojiSuggesti
 import com.vitorpamplona.amethyst.commons.relayClient.user.observeUserInfo
 import com.vitorpamplona.amethyst.commons.resources.Res
 import com.vitorpamplona.amethyst.commons.resources.back
+import com.vitorpamplona.amethyst.commons.resources.chat_composer_hint
 import com.vitorpamplona.amethyst.commons.resources.concord_banned_notice
 import com.vitorpamplona.amethyst.commons.resources.concord_dissolved_read_only
 import com.vitorpamplona.amethyst.commons.resources.concord_private_channel_cut
@@ -75,7 +76,6 @@ import com.vitorpamplona.amethyst.commons.resources.concord_timer_active
 import com.vitorpamplona.amethyst.commons.resources.concord_typing_many
 import com.vitorpamplona.amethyst.commons.resources.concord_typing_one
 import com.vitorpamplona.amethyst.commons.resources.concord_typing_two
-import com.vitorpamplona.amethyst.commons.resources.reply_here
 import com.vitorpamplona.amethyst.commons.service.uploads.SelectedMedia
 import com.vitorpamplona.amethyst.commons.ui.actions.UrlUserTagOutputTransformation
 import com.vitorpamplona.amethyst.commons.ui.actions.uploads.SelectFromGallery
@@ -589,7 +589,7 @@ private fun ConcordMessageComposer(
             shape = EditFieldBorder,
             placeholder = {
                 Text(
-                    text = stringRes(Res.string.reply_here),
+                    text = stringRes(Res.string.chat_composer_hint),
                     color = MaterialTheme.colorScheme.placeholderText,
                 )
             },

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/publicChannels/send/EditFieldRow.kt

@@ -51,7 +51,7 @@ import com.vitorpamplona.amethyst.commons.nip30CustomEmojis.ui.ShowEmojiSuggesti
 import com.vitorpamplona.amethyst.commons.resources.Res
 import com.vitorpamplona.amethyst.commons.resources.buzz_editing_banner
 import com.vitorpamplona.amethyst.commons.resources.cancel
-import com.vitorpamplona.amethyst.commons.resources.reply_here
+import com.vitorpamplona.amethyst.commons.resources.chat_composer_hint
 import com.vitorpamplona.amethyst.commons.service.upload.ui.StrippingFailureDialog
 import com.vitorpamplona.amethyst.commons.service.uploads.SelectedMedia
 import com.vitorpamplona.amethyst.commons.ui.actions.UrlUserTagOutputTransformation
@@ -199,7 +199,7 @@ fun EditFieldRow(
             modifier = Modifier.fillMaxWidth(),
             placeholder = {
                 Text(
-                    text = stringRes(Res.string.reply_here),
+                    text = stringRes(Res.string.chat_composer_hint),
                     color = MaterialTheme.colorScheme.placeholderText,
                 )
             },

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/nests/room/chat/NestEditFieldRow.kt

@@ -38,7 +38,7 @@ import androidx.compose.ui.unit.dp
 import com.vitorpamplona.amethyst.commons.chats.ui.ThinSendButton
 import com.vitorpamplona.amethyst.commons.nip30CustomEmojis.ui.ShowEmojiSuggestionList
 import com.vitorpamplona.amethyst.commons.resources.Res
-import com.vitorpamplona.amethyst.commons.resources.reply_here
+import com.vitorpamplona.amethyst.commons.resources.chat_composer_hint
 import com.vitorpamplona.amethyst.commons.service.upload.ui.StrippingFailureDialog
 import com.vitorpamplona.amethyst.commons.service.uploads.SelectedMedia
 import com.vitorpamplona.amethyst.commons.ui.actions.UrlUserTagOutputTransformation
@@ -140,7 +140,7 @@ fun NestEditFieldRow(
             modifier = Modifier.fillMaxWidth(),
             placeholder = {
                 Text(
-                    text = stringRes(Res.string.reply_here),
+                    text = stringRes(Res.string.chat_composer_hint),
                     color = MaterialTheme.colorScheme.placeholderText,
                 )
             },

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/theme/AmethystColorScheme.kt

@@ -420,11 +420,13 @@ val ColorScheme.subtleBorder: Color
 val ColorScheme.chatBackground: Color
     get() = if (isLight) LightChatBackground else DarkChatBackground
 
-// Accent-following bubble fill for the logged-in user's own chat messages. Stronger
-// than mediumImportanceLink so "mine" vs "theirs" vs background read at a glance
-// while the default onBackground text stays readable on top of it.
+// Accent-following bubble fill for the logged-in user's own chat messages. A tint, not a
+// fill: enough accent that "mine" vs "theirs" reads at a glance, low enough that a screen
+// of my own messages is a deep muted tone carrying white text, not a wall of purple (at
+// 45% the bubbles were the loudest thing on the screen and the gray captions on them
+// were hard to read).
 val ColorScheme.chatBubbleMe: Color
-    get() = primary.copy(alpha = if (isLight) 0.36f else 0.45f)
+    get() = primary.copy(alpha = if (isLight) 0.20f else 0.24f)
 
 val ColorScheme.chatBubbleThem: Color
     get() = if (isLight) LightChatBubbleThem else DarkChatBubbleThem

commonsUI/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/ui/theme/Shape.kt

@@ -245,7 +245,9 @@ val ShowMoreRelaysButtonIconButtonModifier = Modifier.size(15.dp)
 val ShowMoreRelaysButtonIconModifier = Modifier.size(20.dp)
 val ShowMoreRelaysButtonBoxModifer = Modifier.width(55.dp).height(17.dp)
 
-val ChatBubbleMaxSizeModifier = Modifier.fillMaxWidth(0.85f)
+// Caps a bubble at ~3/4 of the row: past that, a long message turns into a wide slab
+// that reads like a document instead of a line of conversation.
+val ChatBubbleMaxSizeModifier = Modifier.fillMaxWidth(0.78f)
 
 val ModifierWidth3dp = Modifier.width(3.dp)
 
@@ -272,14 +274,17 @@ val FeedPadding = PaddingValues(top = 10.dp, bottom = 10.dp)
 val ButtonPadding = PaddingValues(vertical = 6.dp, horizontal = 16.dp)
 
 val ChatPaddingInnerQuoteModifier = Modifier
+
+// Two gaps only, so the column has a rhythm: ~2dp between bubbles of one author run and
+// ~10dp where a new run starts. The gap lives on top of the bubble that opens a run.
 val ChatPaddingModifier =
     Modifier
         .fillMaxWidth(1f)
         .padding(
             start = 12.dp,
             end = 12.dp,
-            top = 3.dp,
-            bottom = 3.dp,
+            top = 9.dp,
+            bottom = 1.dp,
         )
 
 // Tighter top gap for a message visually connected to the previous message of the
@@ -291,7 +296,7 @@ val ChatPaddingGroupedModifier =
             start = 12.dp,
             end = 12.dp,
             top = 1.dp,
-            bottom = 3.dp,
+            bottom = 1.dp,
         )
 
 val profileContentHeaderModifier =

commonsUI/src/jvmTest/kotlin/com/vitorpamplona/amethyst/commons/chats/ui/SubjectChangeTest.kt

@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.commons.chats.ui
+
+import com.vitorpamplona.quartz.nip01Core.core.Event
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertNull
+
+class SubjectChangeTest {
+    private val key = "460c25e682fda7832b52d1f22d3d22b3176d972f60dcdc3212ed8c92ef85065c"
+
+    private fun message(subject: String?) =
+        Event(
+            id = key,
+            pubKey = key,
+            createdAt = 1L,
+            kind = 14,
+            tags = if (subject != null) arrayOf(arrayOf("subject", subject)) else emptyArray(),
+            content = "hi",
+            sig = key,
+        )
+
+    @Test
+    fun noSubjectIsNoRename() {
+        assertNull(subjectChangeOf(message(null), message(null)))
+    }
+
+    @Test
+    fun aNewSubjectIsARename() {
+        assertEquals("Product", subjectChangeOf(message(null), message("Product")))
+        assertEquals("Product", subjectChangeOf(message("Old"), message("Product")))
+    }
+
+    @Test
+    fun aRepeatedSubjectIsNotARename() {
+        // Some clients tag every message of a named group with its subject.
+        assertNull(subjectChangeOf(message("Product"), message("Product")))
+        assertNull(subjectChangeOf(message("Product"), message(" Product ")))
+    }
+
+    @Test
+    fun aBlankSubjectIsNoRename() {
+        assertNull(subjectChangeOf(message("Product"), message("  ")))
+    }
+}

commonsUI/src/jvmTest/kotlin/com/vitorpamplona/amethyst/commons/ui/screen/loggedIn/chats/feed/ChatScreenRenderTest.kt

@@ -0,0 +1,258 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.commons.ui.screen.loggedIn.chats.feed
+
+import androidx.compose.foundation.background
+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.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.ImageComposeScene
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.dp
+import com.vitorpamplona.amethyst.commons.chats.ui.ChatBubbleLayout
+import com.vitorpamplona.amethyst.commons.chats.ui.ChatDivisor
+import com.vitorpamplona.amethyst.commons.chats.ui.ChatGroupPosition
+import com.vitorpamplona.amethyst.commons.chats.ui.ChatSystemCaption
+import com.vitorpamplona.amethyst.commons.chats.ui.ThinSendButton
+import com.vitorpamplona.amethyst.commons.icons.symbols.Icon
+import com.vitorpamplona.amethyst.commons.icons.symbols.MaterialSymbols
+import com.vitorpamplona.amethyst.commons.ui.theme.EditFieldBorder
+import com.vitorpamplona.amethyst.commons.ui.theme.Font12SP
+import com.vitorpamplona.amethyst.commons.ui.theme.ThemeComparisonRow
+import com.vitorpamplona.amethyst.commons.ui.theme.isLight
+import com.vitorpamplona.amethyst.commons.ui.theme.placeholderText
+import org.jetbrains.skia.EncodedImageFormat
+import java.io.File
+import kotlin.test.Test
+import kotlin.test.assertTrue
+
+/**
+ * Renders a group chat offscreen (no device, no display) through `ImageComposeScene`, in the dark and
+ * light themes side by side, and writes it to `commonsUI/build/chat-screen/chat.png`.
+ *
+ * Bubbles, dividers, the rename caption, reaction chips and the send button are the real shared
+ * composables. The header row, the bubble footer and the faces are stand-ins with the same geometry
+ * and styles, since the real ones need a Note, an account and the network. It exists so the chat's
+ * visual weight can be looked at while it is tuned, and it fails if the screen draws nothing.
+ */
+class ChatScreenRenderTest {
+    private val outDir = File("build/chat-screen").apply { mkdirs() }
+
+    @Test
+    fun chat() {
+        val density = 2f
+        val widthDp = 840
+        val heightDp = 1040
+        val scene =
+            ImageComposeScene(
+                width = (widthDp * density).toInt(),
+                height = (heightDp * density).toInt(),
+                density = Density(density),
+            ) { ThemeComparisonRow { SampleGroupChat() } }
+        try {
+            var image = scene.render(0)
+            repeat(SETTLE_FRAMES) { frame ->
+                Thread.sleep(FRAME_MILLIS)
+                image = scene.render((frame + 1) * FRAME_MILLIS * 1_000_000L)
+            }
+            val png = image.encodeToData(EncodedImageFormat.PNG) ?: error("could not encode")
+            File(outDir, "chat.png").writeBytes(png.bytes)
+
+            val pixels = image.peekPixels() ?: error("no pixels")
+            val distinct = HashSet<Int>()
+            for (y in 0 until image.height step 7) for (x in 0 until image.width step 7) distinct += pixels.getColor(x, y)
+            assertTrue(distinct.size > 20, "the chat rendered almost nothing (${distinct.size} colours)")
+        } finally {
+            scene.close()
+        }
+    }
+
+    private companion object {
+        const val SETTLE_FRAMES = 12
+        const val FRAME_MILLIS = 60L
+    }
+}
+
+private const val OUTPOST = "a1b2c3d4e5f60718293a4b5c6d7e8f90a1b2c3d4e5f60718293a4b5c6d7e8f9"
+private const val DAVID = "3f9e2d1c0b0a99887766554433221100ffeeddccbbaa99887766554433221100"
+
+@Composable
+private fun Face(
+    color: Color,
+    size: Int = 28,
+) {
+    Box(Modifier.size(size.dp).background(color, CircleShape))
+}
+
+/** Same geometry as `ChatRoomFaces` (two overlapping faces with a background ring). */
+@Composable
+private fun HeaderFaces() {
+    val face = 34.dp * 0.68f
+    Box(Modifier.size(34.dp)) {
+        Box(Modifier.align(Alignment.TopStart).size(face).background(Color(0xFF8C6E5A), CircleShape))
+        Box(
+            contentAlignment = Alignment.Center,
+            modifier = Modifier.align(Alignment.BottomEnd).size(face + 4.dp).background(MaterialTheme.colorScheme.background, CircleShape),
+        ) {
+            Box(Modifier.size(face).background(Color(0xFF4F86C6), CircleShape))
+        }
+    }
+}
+
+@Composable
+private fun Header() {
+    Row(
+        verticalAlignment = Alignment.CenterVertically,
+        modifier = Modifier.fillMaxWidth().padding(horizontal = 12.dp, vertical = 10.dp),
+    ) {
+        Icon(MaterialSymbols.AutoMirrored.ArrowBack, contentDescription = null, tint = MaterialTheme.colorScheme.placeholderText)
+        Spacer(Modifier.width(12.dp))
+        HeaderFaces()
+        Column(Modifier.padding(start = 10.dp)) {
+            Text("NosFabrica Product", fontWeight = FontWeight.SemiBold, style = MaterialTheme.typography.titleMedium)
+            Text("5 members", style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.placeholderText)
+        }
+    }
+}
+
+/** Same type and color as `ChatTimeAgo` + the delivered tick of `ChatTimeWithDelivery`. */
+@Composable
+private fun Footer(
+    time: String,
+    mine: Boolean,
+) {
+    Row(verticalAlignment = Alignment.CenterVertically) {
+        Text(time, color = MaterialTheme.colorScheme.placeholderText, fontSize = Font12SP)
+        if (mine) {
+            Spacer(Modifier.width(4.dp))
+            Icon(MaterialSymbols.DoneAll, contentDescription = null, tint = MaterialTheme.colorScheme.placeholderText, modifier = Modifier.size(14.dp))
+        }
+    }
+}
+
+@Composable
+private fun Bubble(
+    text: String,
+    mine: Boolean,
+    position: ChatGroupPosition = ChatGroupPosition.SINGLE,
+    time: String? = null,
+    author: Pair<String, String>? = null,
+    faceColor: Color = Color.Gray,
+    fire: Boolean = false,
+) {
+    val isLight = MaterialTheme.colorScheme.isLight
+    ChatBubbleLayout(
+        isLoggedInUser = mine,
+        isDraft = false,
+        innerQuote = false,
+        drawAuthorInfo = author != null && position.isFirstOfGroup,
+        groupPosition = position,
+        onClick = { false },
+        onAuthorClick = {},
+        actionMenu = {},
+        reactionsRow =
+            if (fire) {
+                { ChatChipFlowRow { ReactionChipView(ReactionChip("🔥", 1, false), {}, {}) } }
+            } else {
+                null
+            },
+        footerRow = time?.let { { Footer(it, mine) } },
+        drawAuthorLine = {
+            author?.let { (hex, name) ->
+                Text(name, color = authorNameColorFor(hex, isLight), fontWeight = ChatAuthorNameWeight, fontSize = ChatAuthorNameSize)
+            }
+        },
+        authorAvatar = if (author != null) ({ Face(faceColor) }) else null,
+    ) { Text(text) }
+}
+
+@Composable
+private fun Composer(typed: String?) {
+    Surface(
+        shape = EditFieldBorder,
+        color = MaterialTheme.colorScheme.onSurface.copy(alpha = 0.08f),
+        modifier = Modifier.fillMaxWidth().padding(horizontal = 10.dp, vertical = 6.dp),
+    ) {
+        Row(verticalAlignment = Alignment.CenterVertically, modifier = Modifier.padding(start = 14.dp, end = 4.dp)) {
+            Icon(MaterialSymbols.AddPhotoAlternate, contentDescription = null, tint = MaterialTheme.colorScheme.placeholderText)
+            Spacer(Modifier.width(12.dp))
+            Text(
+                typed ?: "Message",
+                color = if (typed != null) MaterialTheme.colorScheme.onSurface else MaterialTheme.colorScheme.placeholderText,
+                modifier = Modifier.weight(1f),
+            )
+            ThinSendButton(isActive = typed != null, modifier = Modifier) {}
+        }
+    }
+}
+
+@Composable
+private fun SampleGroupChat() {
+    Column {
+        Header()
+        ChatDivisor("Today")
+        ChatSystemCaption("You renamed the chat to “NosFabrica Product”")
+        Bubble("Renamed the chat to “NosFabrica Product”", mine = true, position = ChatGroupPosition.TOP)
+        Bubble("Ok, this is working way better than I expected", mine = true, position = ChatGroupPosition.BOTTOM, time = "8:38", fire = true)
+        Bubble("A cool goal of this is to delete messages from unknown users automatically", mine = true, time = "8:49")
+        Bubble(
+            "to prevent random users or bots out of network from sliding in DMs?",
+            mine = false,
+            time = "8:55",
+            author = OUTPOST to "Relay Outpost",
+            faceColor = Color(0xFF5A5A5A),
+        )
+        Bubble("Delete the past scammers", mine = true, time = "8:59", fire = true)
+        Bubble(
+            "Big fat red alert next to the accounts that need it.",
+            mine = false,
+            position = ChatGroupPosition.TOP,
+            author = DAVID to "david",
+            faceColor = Color(0xFFD9825B),
+        )
+        Bubble(
+            "Unlike every other nostr app that give you no useful warnings at all.",
+            mine = false,
+            position = ChatGroupPosition.BOTTOM,
+            time = "9:08",
+            author = DAVID to "david",
+            faceColor = Color(0xFFD9825B),
+        )
+        Bubble("But also, send a message to the relays that store DMs to delete those Giftwraps.", mine = true, time = "9:09")
+        Spacer(Modifier.size(8.dp))
+        Composer(typed = null)
+        Composer(typed = "Sounds good")
+    }
+}