Show running tool glow at full strength when a transcript opens

mac/Sources/Byre/Chat.swift

@@ -66,6 +66,8 @@ final class ChatModel {
     @ObservationIgnored private var activeObserver: NotificationCenter.ObservationToken?
     @ObservationIgnored private var keyObserver: NotificationCenter.ObservationToken?
     @ObservationIgnored private var started = false
+    @ObservationIgnored private var opened = 0
+    @ObservationIgnored private var settled = false
     @ObservationIgnored private var cursors: [String: Int] = [:]
 
     init(_ kind: ChatKind, _ store: Store) {
@@ -185,6 +187,10 @@ final class ChatModel {
         row.pending && (running || subagents && row.inActive || row.inReview) || row.holdsActive && (running || subagents)
     }
 
+    func fades(_ row: Row) -> Bool {
+        row.firstId > opened
+    }
+
     var hasOlder: Bool {
         kind == .lead && store.leadHasOlder()
     }
@@ -246,6 +252,10 @@ final class ChatModel {
 
     private func appended(_ all: [ByreEvent]) {
         _ = builder.append(all.filter(shows))
+        if !settled {
+            opened = Row.newest
+            settled = feed?.ready == true
+        }
         jump()
     }
 
@@ -1117,6 +1127,7 @@ struct DetailsBox<Summary: View, Content: View>: View {
     var boxed = true
     var nested = false
     var working = false
+    var fade = false
     var status: (text: String, color: Color)? = nil
     @ViewBuilder let summary: Summary
     @ViewBuilder let content: Content
@@ -1153,8 +1164,9 @@ struct DetailsBox<Summary: View, Content: View>: View {
         .background(boxed ? (nested ? Palette.raised : Palette.surface) : .clear, in: RoundedRectangle(cornerRadius: 8))
         .overlay {
             if boxed {
-                RoundedRectangle(cornerRadius: 8).stroke(working && shown ? accent : Palette.border)
+                let lit = working && (shown || !fade)
-                    .animation(.easeInOut(duration: 0.6), value: working && shown)
+                RoundedRectangle(cornerRadius: 8).stroke(lit ? accent : Palette.border)
+                    .animation(.easeInOut(duration: 0.6), value: lit)
             }
         }
         .onAppear {
@@ -1276,7 +1288,7 @@ struct RowView: View {
             }
 
         case .tool(let name, let brief, let input):
-            DetailsBox(nested: nested, working: model.working(row)) {
+            DetailsBox(nested: nested, working: model.working(row), fade: model.fades(row)) {
                 SubagentTag(show: row.tag)
                 Text(styled([(name, 600, nil), (" ", 400, nil), (brief, 400, Palette.muted)]))
             } content: {
@@ -1288,7 +1300,7 @@ struct RowView: View {
             }
 
         case .subagent(let title, let description, let prompt):
-            DetailsBox(nested: nested, working: model.working(row), status: (row.status, row.statusState == .done ? Palette.muted : row.statusState == .error ? Palette.danger : Palette.accent)) {
+            DetailsBox(nested: nested, working: model.working(row), fade: model.fades(row), status: (row.status, row.statusState == .done ? Palette.muted : row.statusState == .error ? Palette.danger : Palette.accent)) {
                 SubagentTag(show: row.tag)
                 Text(styled([(title, 600, nil), (" ", 400, nil), (description, 400, Palette.muted)]))
             } content: {
@@ -1303,7 +1315,7 @@ struct RowView: View {
             }
 
         case .reviewer(let agentModel):
-            DetailsBox(nested: nested, working: row.active, status: (row.status, row.statusState == .done ? Palette.muted : row.statusState == .error ? Palette.danger : Palette.accent)) {
+            DetailsBox(nested: nested, working: row.active, fade: model.fades(row), status: (row.status, row.statusState == .done ? Palette.muted : row.statusState == .error ? Palette.danger : Palette.accent)) {
                 Text(styled([(row.review?.stage ?? "review", 600, nil), (agentModel.isEmpty ? "" : " · \(agentModel)", 400, Palette.muted), (row.text.isEmpty ? "" : "  \(row.text)", 400, Palette.muted)]))
                     .lineLimit(1)
             } content: {
@@ -1317,7 +1329,7 @@ struct RowView: View {
             }
 
         case .group:
-            DetailsBox(nested: nested, working: model.working(row)) {
+            DetailsBox(nested: nested, working: model.working(row), fade: model.fades(row)) {
                 SubagentTag(show: row.tag)
                 RunSummary(calls: row.calls)
             } content: {

mac/Sources/Byre/TranscriptBuilder.swift

@@ -145,6 +145,17 @@ final class Row: Identifiable {
         return false
     }
 
+    static var newest: Int {
+        rowIds
+    }
+
+    var firstId: Int {
+        if case .group = kind {
+            return body!.rows.first?.id ?? id
+        }
+        return id
+    }
+
     init(_ kind: RowKind, taskId: String?, body: Bool = false) {
         rowIds += 1
         id = rowIds