Compact imported folder conversation previews

tests/conversation-home-items.test.ts

@@ -542,6 +542,45 @@ test("folder archive homepage rows keep the project title, compact subtitle, and
   assert.equal(presentation.href, "/conversations/folders/mac-studio%3Aboss");
 });
 
+test("conversation home compacts imported previews and trims local workspace prefixes from folder subtitles", async () => {
+  await setup();
+  const state = await readState();
+
+  state.projects = state.projects.filter((project) => project.id === "master-agent");
+  state.projects.push(
+    {
+      ...buildImportedThreadProject(
+        "mac-studio",
+        "wenshen-thread-1",
+        "wenshenapp",
+        "/Users/kris/code/wenshenapp",
+        "/Users/kris/code/wenshenapp/docs/superpowers/specs/2026-04-06-context-cleanup-design.md",
+        "thread-1",
+        "2026-04-06T15:00:00+08:00",
+      ),
+      preview: "已从设备 Mac Studio 导入线程《/Users/kris/code/wenshenapp/docs/superpowers/specs/2026-04-06-context-cleanup-design.md》。",
+      lastMessageAt: "2026-04-06T15:00:00+08:00",
+    },
+    buildImportedThreadProject(
+      "mac-studio",
+      "wenshen-thread-2",
+      "wenshenapp",
+      "/Users/kris/code/wenshenapp",
+      "补齐 Android 会话可读性",
+      "thread-2",
+      "2026-04-06T14:00:00+08:00",
+    ),
+  );
+
+  const folder = getConversationHomeItems(state).find((item) => item.projectId === "mac-studio:/users/kris/code/wenshenapp");
+
+  assert.ok(folder, "expected grouped folder archive item");
+  assert.equal(folder?.conversationType, "folder_archive");
+  assert.equal(folder?.folderLabel, "2 个线程 · 最近：wenshenapp/docs/superpowers/specs/2026-04-06-context-cleanup-design.md");
+  assert.equal(folder?.preview, "已导入线程");
+  assert.equal(folder?.lastMessagePreview, "已导入线程");
+});
+
 test("folder archive homepage rows expose pin toggles when the folder is pinned", async () => {
   await setup();
   const state = await readState();