Editor: live settings sync + session-death banner

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

ui/src/app/editor-window/editor-window.html

@@ -89,6 +89,16 @@
       </div>
     }
 
+    @if (sessionDead()) {
+      <div
+        class="flex shrink-0 items-center gap-2 border-b border-border bg-destructive/10 px-3 py-1.5 text-[11px] text-destructive"
+      >
+        <ng-icon name="mynaXCircle" size="0.85rem" class="shrink-0" />
+        Disconnected from {{ ctx.sessionTitle }} — saving will fail, but your text is preserved
+        in this window.
+      </div>
+    }
+
     @if (loading()) {
       <div class="flex flex-1 items-center justify-center">
         <ng-icon name="mynaSpinner" size="1.25rem" class="animate-spin text-primary" />

ui/src/app/settings.service.ts

@@ -32,23 +32,28 @@ export class SettingsService {
     this.applyAccent();
     if (!this.rpc.available) return;
     void this.rpc.request.getSettings({}).then((res) => {
-      if (!res.ok) return;
-      this.theme.set(res.settings.theme);
-      this.darkTone.set(res.settings.darkTone);
-      this.accent.set(res.settings.accent);
-      this.iconColors.set(res.settings.iconColors);
-      this.speedUnit.set(res.settings.speedUnit);
-      this.textSize.set(res.settings.textSize);
-      this.transferMode.set(res.settings.transferMode);
-      this.transferConcurrency.set(res.settings.transferConcurrency);
-      this.autoClearCompleted.set(res.settings.autoClearCompleted);
-      this.editor.set(res.settings.editor);
-      this.editorApp.set(res.settings.editorApp);
-      this.applyTheme();
-      this.applyDarkTone();
-      this.applyAccent();
-      this.applyTextSize();
+      if (res.ok) this.applyAll(res.settings);
     });
+    // editor windows: follow settings the main window saves, live
+    this.rpc.onSettingsChanged((settings) => this.applyAll(settings));
+  }
+
+  private applyAll(settings: AppSettings): void {
+    this.theme.set(settings.theme);
+    this.darkTone.set(settings.darkTone);
+    this.accent.set(settings.accent);
+    this.iconColors.set(settings.iconColors);
+    this.speedUnit.set(settings.speedUnit);
+    this.textSize.set(settings.textSize);
+    this.transferMode.set(settings.transferMode);
+    this.transferConcurrency.set(settings.transferConcurrency);
+    this.autoClearCompleted.set(settings.autoClearCompleted);
+    this.editor.set(settings.editor);
+    this.editorApp.set(settings.editorApp);
+    this.applyTheme();
+    this.applyDarkTone();
+    this.applyAccent();
+    this.applyTextSize();
   }
 
   setTheme(theme: AppSettings['theme']): void {