Chat View Refinement

Nucleic-Session: 4E56990A-96AE-4597-9140-753CB82E769D
Co-authored-by: Nucleic <[email protected]>

NucleicRemote/NucleicRemote/Views/SessionDetailView.swift

@@ -21,39 +21,16 @@ struct SessionDetailView: View {
     }
 
     var body: some View {
-        Group {
-            if tab == 0 {
-                TranscriptList(events: store.openEvents)
-            } else if store.capabilities.canFetchDiff || store.openDiff != nil {
-                SessionDiffView(diff: store.openDiff, loading: store.diffLoading)
-                    .onAppear { store.fetchDiff(sessionID) }
-            } else {
-                // Older host with no on-demand diff — the stat summary is all it projects.
-                DiffSummaryView(diffStat: summary?.diffStat)
+        TranscriptList(events: store.openEvents)
+            // The chat bar floats over the scrolling content on Liquid Glass instead of sitting
+            // in a boxed strip below it, so the transcript runs the full height of the screen.
+            .safeAreaInset(edge: .bottom) { actionArea }
+            .navigationTitle(summary?.title ?? "Session")
+            .navigationBarTitleDisplayMode(.inline)
+            .toolbar {
+                ToolbarItem(placement: .topBarTrailing) { sessionMenu }
             }
-        }
-        // The chat bar floats over the scrolling content on Liquid Glass instead of sitting in
-        // a boxed strip below it, so the transcript runs the full height of the screen.
-        .safeAreaInset(edge: .bottom) { actionArea }
-        .navigationTitle(summary?.title ?? "Session")
-        .navigationBarTitleDisplayMode(.inline)
-        .toolbar {
-            // Transcript/Diff lives in the navigation bar (icon segments) rather than a
-            // dedicated row — it's a mode flip, not content, and shouldn't cost chat height.
-            ToolbarItem(placement: .topBarTrailing) {
-                Picker("View", selection: $tab) {
-                    Image(systemName: "text.bubble").tag(0)
-                        .accessibilityLabel("Transcript")
-                    Image(systemName: "plus.forwardslash.minus").tag(1)
-                        .accessibilityLabel("Diff")
-                }
-                .pickerStyle(.segmented)
-                .fixedSize()
-            }
-            if let summary, store.canControl {
-                ToolbarItem(placement: .topBarTrailing) { sessionMenu(summary) }
-            }
-        }
+            .sheet(isPresented: $showDiff) { diffSheet }
         .alert("Rename chat", isPresented: $showRename) {
             TextField("Title", text: $renameDraft)
             Button("Cancel", role: .cancel) {}