fix(editor): preserve active cell border on row highlight

apps/desktop/src/lib/__tests__/editor/currentStatementFrameLayer.spec.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it, vi } from "vitest";
 import { Text } from "@codemirror/state";
-import { currentStatementFrameRect, FRAME_INSET_PX } from "@/lib/editor/codemirrorCurrentStatementFrameLayer";
+import { currentStatementFrameLayer, currentStatementFrameRect, FRAME_INSET_PX } from "@/lib/editor/codemirrorCurrentStatementFrameLayer";
 
 interface CoordRect {
   left: number;
@@ -253,3 +253,14 @@ describe("currentStatementFrameRect", () => {
     expect(rect!.height).toBe(expectedHeight);
   });
 });
+
+describe("currentStatementFrameLayer", () => {
+  it("renders above line decorations so active-line backgrounds cannot cover the frame", () => {
+    const layer = vi.fn((config) => config);
+    const RectangleMarker = vi.fn();
+
+    currentStatementFrameLayer({ layer, RectangleMarker } as never, () => ({ from: 0, to: 1 }));
+
+    expect(layer).toHaveBeenCalledWith(expect.objectContaining({ above: true, class: "cm-db-currentStatementFrameLayer" }));
+  });
+});

apps/desktop/src/lib/editor/codemirrorCurrentStatementFrameLayer.ts

@@ -140,7 +140,9 @@ interface CurrentStatementFrameModule {
  */
 export function currentStatementFrameLayer(viewModule: CurrentStatementFrameModule, resolve: StatementFrameResolver): Extension {
   return viewModule.layer({
-    above: false,
+    // Keep the outline above line decorations so opaque active-line colors
+    // from editor themes cannot cover the frame border.
+    above: true,
     class: "cm-db-currentStatementFrameLayer",
     markers(view) {
       const request = resolve(view);