fix(desktop): clamp long session names in the sidebar hover card

apps/desktop/src/renderer/routes/_authenticated/_dashboard/components/DashboardSidebar/components/DashboardSidebarWorkspaceItem/components/DashboardSidebarWorkspaceHoverCardContent/DashboardSidebarWorkspaceHoverCardContent.test.tsx

@@ -0,0 +1,71 @@
+import { afterAll, afterEach, describe, expect, test } from "bun:test";
+import { GlobalRegistrator } from "@happy-dom/global-registrator";
+import type { DashboardSidebarWorkspace } from "../../../../types";
+
+// happy-dom over the preloaded plain-object document: Radix needs a real DOM.
+// Globals are process-wide, so unregister in afterAll (see Redirect.test.tsx).
+const alreadyRegistered = GlobalRegistrator.isRegistered;
+if (!alreadyRegistered) GlobalRegistrator.register();
+(
+	globalThis as { IS_REACT_ACT_ENVIRONMENT?: boolean }
+).IS_REACT_ACT_ENVIRONMENT = true;
+
+// Queries go through `within(document.body)` rather than `screen`: in a full
+// suite run an earlier file may have loaded testing-library against a previous
+// happy-dom window, and `screen` stays bound to that stale body.
+const { cleanup, render, within } = await import("@testing-library/react");
+const { DashboardSidebarWorkspaceHoverCardContent } = await import(
+	"./DashboardSidebarWorkspaceHoverCardContent"
+);
+
+afterEach(() => {
+	cleanup();
+	document.body.style.pointerEvents = "";
+});
+afterAll(async () => {
+	if (!alreadyRegistered) await GlobalRegistrator.unregister();
+});
+
+function workspaceWithName(name: string): DashboardSidebarWorkspace {
+	return {
+		id: "ws-1",
+		projectId: null,
+		hostId: "host-1",
+		hostType: "local-device",
+		type: "session",
+		hostIsOnline: true,
+		accentColor: null,
+		name,
+		branch: "main",
+		pullRequest: null,
+		repoUrl: null,
+		branchExistsOnRemote: false,
+		previewUrl: null,
+		needsRebase: null,
+		behindCount: null,
+		createdAt: new Date("2026-09-01T00:00:00Z"),
+		updatedAt: new Date("2026-09-01T00:00:00Z"),
+		lastActivityAt: null,
+		taskId: null,
+		isPinned: false,
+		pendingTransaction: null,
+	};
+}
+
+describe("DashboardSidebarWorkspaceHoverCardContent long session name", () => {
+	test("an unbreakable name is wrapped, clamped, and fully reachable via tooltip", () => {
+		// happy-dom has no layout engine: this asserts the markup shape only.
+		// Real overflow verification needs CDP against the running desktop app.
+		const longName = `fix_the_thing_that_broke_in_the_importer_pipeline_${"x".repeat(120)}`;
+		render(
+			<DashboardSidebarWorkspaceHoverCardContent
+				workspace={workspaceWithName(longName)}
+				diffStats={null}
+			/>,
+		);
+		const name = within(document.body).getByTitle(longName);
+		expect(name.textContent).toBe(longName);
+		expect(name.className).toMatch(/\bbreak-words\b/);
+		expect(name.className).toMatch(/\bline-clamp-2\b/);
+	});
+});

apps/desktop/src/renderer/routes/_authenticated/_dashboard/components/DashboardSidebar/components/DashboardSidebarWorkspaceItem/components/DashboardSidebarWorkspaceHoverCardContent/DashboardSidebarWorkspaceHoverCardContent.tsx

@@ -65,7 +65,14 @@ export function DashboardSidebarWorkspaceHoverCardContent({
 	return (
 		<div className="space-y-3">
 			<div className="space-y-1.5">
-				{hasCustomAlias && <div className="text-sm font-medium">{name}</div>}
+				{hasCustomAlias && (
+					<div
+						className="text-sm font-medium break-words line-clamp-2"
+						title={name}
+					>
+						{name}
+					</div>
+				)}
 				<div className="space-y-0.5">
 					<span className="text-[10px] uppercase tracking-wide text-muted-foreground">
 						<Trans>Branch</Trans>