Preserve memo drafts and stabilize goal tree selection

e2e/goal-selection.spec.js

@@ -0,0 +1,44 @@
+// Rôle : couvre les remplacements de données et les onglets invalides du Goal Tree sous StrictMode.
+/* global window, document */
+import { test, expect } from "@playwright/test";
+import { fileURLToPath, URL } from "node:url";
+
+const probeUrl = `/@fs/${fileURLToPath(new URL("./fixtures/goal-selection-probe.js", import.meta.url))}`;
+
+test("goal selection remains valid through kind changes and data replacement", async ({ page }) => {
+  const errors = [];
+  page.on("pageerror", (error) => errors.push(error.message));
+  await page.goto("/");
+  await page.evaluate(async (url) => {
+    const { mountGoalSelectionProbe } = await import(url);
+    const element = document.createElement("div");
+    document.body.prepend(element);
+    window.goalProbe = mountGoalSelectionProbe(element);
+  }, probeUrl);
+  const first = { id: "first", title: "First", kind: "checklist" };
+  const second = { id: "second", title: "Second", kind: "checklist" };
+
+  async function updateAndCheck(nodes, selected, tab) {
+    const snapshots = await page.evaluate((nodes) => {
+      window.goalProbe.update(nodes);
+      return window.goalProbe.snapshots;
+    }, nodes);
+    expect(snapshots.length).toBeGreaterThan(0);
+    for (const snapshot of snapshots) {
+      expect(snapshot.selected).toBe(selected);
+      expect(snapshot.tab).toBe(tab);
+      expect(snapshot.tabs).toContain(snapshot.tab);
+    }
+  }
+
+  await updateAndCheck([first, second], "first", "base");
+  await page.evaluate(() => window.goalProbe.edit("second"));
+  expect(await page.evaluate(() => window.goalProbe.snapshots.at(-1).tab)).toBe("content");
+  await updateAndCheck([first, { ...second, kind: "step" }], "second", "base");
+  await updateAndCheck([first], "first", "base");
+  await updateAndCheck([first, second], "first", "base");
+  await updateAndCheck([], "", "base");
+  await updateAndCheck([second], "second", "base");
+  await page.evaluate(() => window.goalProbe.unmount());
+  expect(errors).toEqual([]);
+});