Fix major Nearlight deviations from design review

- Expose End conversation + readable draft during connecting/waiting
- Stop masking assistant speaking/thinking state in Type/muted modes
- Restrict failure diagnosis to real causes (no invented network text)
- Replace old blue tint with Rosewood everywhere
- Fix transcript short-content bottom-anchor (top-align short histories)
- Settings: visible Server URL label, focus on rejected save, edit clears
  saved confirmation, trim-aware unchanged detection
- Task detail: live store lookup with missing-task state
- Task rows: status text label restored

Sources/Features/Tasks/TaskPanelView.swift

@@ -23,7 +23,7 @@ struct TaskPanelView: View {
             LazyVStack(alignment: .leading, spacing: 0) {
                 ForEach(taskStore.sortedTasks) { task in
                     NavigationLink {
-                        TaskDetailView(task: task)
+                        TaskDetailView(taskStore: taskStore, taskID: task.id)
                     } label: {
                         TaskRowView(task: task)
                     }
@@ -130,7 +130,35 @@ private struct TaskRowView: View {
 }
 
 /// Native push detail for one task: title, status, steps, result/error.
+/// Looks the task up live in the store so removal shows the missing state.
 struct TaskDetailView: View {
+    @ObservedObject var taskStore: TaskStore
+    let taskID: String
+    @Environment(\.dynamicTypeSize) private var typeSize
+
+    private var task: TaskItem? {
+        taskStore.tasks[taskID]
+    }
+
+    var body: some View {
+        Group {
+            if let task {
+                TaskDetailContent(task: task)
+            } else {
+                Text("This task is no longer available.")
+                    .font(.body)
+                    .foregroundStyle(Nearlight.quiet)
+                    .padding(Nearlight.s20)
+                    .frame(maxWidth: .infinity, alignment: .leading)
+            }
+        }
+        .background(Nearlight.ground)
+        .navigationTitle("Task")
+        .navigationBarTitleDisplayMode(.inline)
+    }
+}
+
+private struct TaskDetailContent: View {
     let task: TaskItem
     @Environment(\.dynamicTypeSize) private var typeSize
 
@@ -192,9 +220,6 @@ struct TaskDetailView: View {
             .padding(.top, Nearlight.s24)
             .padding(.bottom, Nearlight.s24)
         }
-        .background(Nearlight.ground)
-        .navigationTitle("Task")
-        .navigationBarTitleDisplayMode(.inline)
     }
 
     private var statusTitle: String {