Raise docs editor z-index to 10000 to cover nav bar and all overlays

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

public/styles.css

@@ -2209,9 +2209,9 @@ body.bg-bubbles {
 .docs-submit-btn:disabled { background: var(--muted); opacity: .6; cursor: default; }
 
 #docs-editor-view {
-  position: fixed; inset: 0; z-index: 200;
+  position: fixed; inset: 0; z-index: 10000;
   display: flex; flex-direction: column;
-  background: var(--bg);
+  background: #fff;
 }
 #docs-editor-frame { flex: 1; min-height: 0; }
 #docs-editor-frame iframe { width: 100%; height: 100%; border: none; display: block; }