fix(map): stabilize notifications during map navigation

Ignore obsolete tile cancellations and update source notices without dismissing their existing toast. Keep notice input above the task ticker and disable swipe removal.

The remaining vertical jitter came from Sonner exit offsets being applied on top of flow positioning. Let flow own geometry and retain opacity transitions; add frame-sampled pan and recovery regression coverage.

src/features/map/core/components/notice.test.tsx

@@ -0,0 +1,52 @@
+import { cleanup, render } from "@testing-library/react";
+import { afterEach, expect, it, vi } from "vitest";
+import { dismissMapNotice, showMapNotice } from "./notice-actions";
+import { MapErrorNotice, MapLoadingNotice, MapSourceStatusNotice } from "./notice";
+
+vi.mock("./notice-actions", () => ({ showMapNotice: vi.fn(), dismissMapNotice: vi.fn() }));
+afterEach(() => { cleanup(); vi.clearAllMocks(); });
+
+it("keeps initial healthy sources quiet and announces recovery once", () => {
+  const { rerender, unmount } = render(<MapSourceStatusNotice sourceName="管网" status="online" message="已就绪" />);
+  expect(showMapNotice).not.toHaveBeenCalled();
+  rerender(<MapSourceStatusNotice sourceName="管网" status="online" message="瓦片已加载" />);
+  expect(showMapNotice).not.toHaveBeenCalled();
+  rerender(<MapSourceStatusNotice sourceName="管网" status="offline" message="连接失败" />);
+  expect(showMapNotice).toHaveBeenLastCalledWith(expect.objectContaining({ tone: "error", message: "连接失败" }));
+  rerender(<MapSourceStatusNotice sourceName="管网" status="online" message="已恢复" />);
+  expect(showMapNotice).toHaveBeenLastCalledWith(expect.objectContaining({ tone: "success", duration: 2600 }));
+  rerender(<MapSourceStatusNotice sourceName="管网" status="online" message="全部瓦片已加载" />);
+  expect(showMapNotice).toHaveBeenCalledTimes(2);
+  expect(dismissMapNotice).not.toHaveBeenCalled();
+  unmount();
+  expect(dismissMapNotice).toHaveBeenCalledOnce();
+});
+
+it("updates a degraded source in place and only removes it when unmounted", () => {
+  const { rerender, unmount } = render(<MapSourceStatusNotice id="source" sourceName="管网" status="degraded" message="部分不可用" />);
+  rerender(<MapSourceStatusNotice id="source" sourceName="管网" status="degraded" message="正在重试" />);
+  rerender(<MapSourceStatusNotice id="source" sourceName="管网" status="online" message="已恢复" />);
+  expect(showMapNotice).toHaveBeenCalledTimes(3);
+  expect(dismissMapNotice).not.toHaveBeenCalled();
+  unmount();
+  expect(dismissMapNotice).toHaveBeenCalledWith("source");
+});
+
+it("updates map errors without cancelling the updated notice and cleans up a replaced id", () => {
+  const { rerender, unmount } = render(<MapErrorNotice id="old" message="连接失败" />);
+  rerender(<MapErrorNotice id="old" message="正在重新连接" />);
+  expect(dismissMapNotice).not.toHaveBeenCalled();
+  rerender(<MapErrorNotice id="new" message="另一项错误" />);
+  expect(dismissMapNotice).toHaveBeenCalledExactlyOnceWith("old");
+  unmount();
+  expect(dismissMapNotice).toHaveBeenLastCalledWith("new");
+});
+
+it("keeps loading visible while its title or message changes", () => {
+  const { rerender, unmount } = render(<MapLoadingNotice id="loading" message="加载底图" />);
+  rerender(<MapLoadingNotice id="loading" title="准备管网" message="加载业务图层" />);
+  expect(showMapNotice).toHaveBeenLastCalledWith(expect.objectContaining({ id: "loading", title: "准备管网", duration: Infinity }));
+  expect(dismissMapNotice).not.toHaveBeenCalled();
+  unmount();
+  expect(dismissMapNotice).toHaveBeenCalledWith("loading");
+});