chore: refactoring and tests, splitting up files (#12495)

packages/app/src/pages/layout/sidebar-workspace.test.ts

@@ -0,0 +1,13 @@
+import { describe, expect, test } from "bun:test"
+import { workspaceOpenState } from "./sidebar-workspace-helpers"
+
+describe("workspaceOpenState", () => {
+  test("defaults to local workspace open", () => {
+    expect(workspaceOpenState({}, "/tmp/root", true)).toBe(true)
+  })
+
+  test("uses persisted expansion state when present", () => {
+    expect(workspaceOpenState({ "/tmp/root": false }, "/tmp/root", true)).toBe(false)
+    expect(workspaceOpenState({ "/tmp/branch": true }, "/tmp/branch", false)).toBe(true)
+  })
+})