fix(app): keep update progress visible on the welcome screen (#951)

Check for Updates on the welcome screen showed nothing while the request was out: the check ran only as a status-bar task, and the welcome screen has no status bar. Leaving a project also dropped every notification, including a running update download.

A check started with no project or LightEdit window open now shows its progress in a balloon (keyed like the result, so the result replaces it); project windows keep it in the status bar. A project switch clears only project notifications and keeps the app-wide update ones.

Co-authored-by: youngtseup <[email protected]>

src/workbench/projectNotifications.test.ts

@@ -0,0 +1,26 @@
+import { afterEach, describe, expect, it } from "vitest";
+import { useProject } from "@/platform/project";
+import { activateWorkbench } from "./activate";
+import { notify, useNotifications } from "./notificationStore";
+
+afterEach(() => {
+  useNotifications.setState({ items: [] });
+  useProject.setState({ project: null, lightEdit: false });
+});
+
+describe("notifications across project changes", () => {
+  it("keeps app-level update notifications and drops project ones", () => {
+    useProject.setState({
+      project: { root: "/p", name: "p", trusted: true, isGit: false, settings: {} } as never,
+    });
+    const dispose = activateWorkbench();
+    try {
+      notify({ level: "info", title: "Downloading OpenIDEA 0.1.35", key: "app.update", sticky: true });
+      notify({ level: "info", title: "Git refresh failed", group: "vcs" });
+      useProject.setState({ project: null });
+      expect(useNotifications.getState().items.map((n) => n.title)).toEqual(["Downloading OpenIDEA 0.1.35"]);
+    } finally {
+      dispose();
+    }
+  });
+});