fix(studio): recover uncertain imports with persistent request identities

e2e/ui/furniture-jobs.spec.ts

@@ -143,3 +143,46 @@ test("history shows the current phase and validated recovery source", async ({
 		),
 	).toBe(false);
 });
+
+test("uncertain import submissions keep their identity after a page reload", async ({
+	page,
+}) => {
+	const ids: string[] = [];
+	await page.route("**/api/admin/csrf", (route) =>
+		route.fulfill({ json: { token: "a".repeat(64) } }),
+	);
+	await page.route("**/api/admin/studio/import-jobs**", async (route) => {
+		if (route.request().method() !== "POST") {
+			await route.fulfill({ json: { ok: true, jobs: [], nextCursor: null } });
+			return;
+		}
+		const body = route.request().postDataJSON();
+		ids.push(body.id);
+		if (ids.length === 1) await route.abort("failed");
+		else
+			await route.fulfill({
+				json: { ok: true, job: { ...furnitureJobFixture, id: body.id } },
+			});
+	});
+	await page.goto("/admin/jobs-harness");
+	await page
+		.getByRole("button", { name: "Submit import", exact: true })
+		.click();
+	await expect(page.getByLabel("Submitted", { exact: true })).toHaveText(
+		"false",
+	);
+	await page.reload();
+	await page
+		.getByRole("button", { name: "Submit import", exact: true })
+		.click();
+	await expect(page.getByLabel("Submitted", { exact: true })).toHaveText(
+		"true",
+	);
+	expect(ids).toHaveLength(2);
+	expect(ids[1]).toBe(ids[0]);
+	await page
+		.getByRole("button", { name: "Submit import", exact: true })
+		.click();
+	await expect.poll(() => ids.length).toBe(3);
+	expect(ids[2]).not.toBe(ids[0]);
+});