修正门禁测试定位与动画测量（09-17-company-loan-principal-repayment）

保留原断言、容差及运行配置；两份完整测试定向 61/61 通过，补充可复用规约及失败门禁记录。提交后对固定干净候选重跑 verify-candidate。真实回单、人员与独立业务验收仍待核实；本轮不推送、不部署。

client/tests/e2e/system-action-confirmation.spec.ts

@@ -830,8 +830,14 @@ test.describe("报销付款交接一致性", () => {
         }
         widths.push((await panel.locator("../..").boundingBox())!.width);
         const row = panel.getByTestId("detail-inline-actions");
-        const primary = await row.locator("a, button").first().boundingBox();
-        const more = await row.getByRole("button", { name: "更多", exact: true }).boundingBox();
+        const measuredActions = row.locator("a, button").first()
+          .or(row.getByRole("button", { name: "更多", exact: true }));
+        await expect(measuredActions).toHaveCount(2);
+        // Both positions must come from the same animation frame.
+        const [primary, more] = await measuredActions.evaluateAll((elements) => elements.map((element) => {
+          const { x, y, width, height } = element.getBoundingClientRect();
+          return { x, y, width, height };
+        }));
         expect(Math.abs(primary!.y + primary!.height / 2 - more!.y - more!.height / 2)).toBeLessThan(2);
         expect(more!.x).toBeGreaterThan(primary!.x + primary!.width);
         await row.getByRole("button", { name: "更多", exact: true }).click();