refactor: fix related test

.agents/migration_plan_autocomplete.md

@@ -270,7 +270,7 @@
 
 ---
 
-### Step 10: 更新 E2E 测试
+### Step 10: 更新 E2E 测试 ✅ 完成
 **文件变更：**
 - `apps/server-e2e/src/support/app.ts`
 - `apps/server-e2e/src/layout/split_pane.spec.ts`
@@ -278,6 +278,13 @@
 **验证方式：**
 - E2E 测试全部通过
 
+**当前完成情况：**
+- ✅ `apps/server-e2e/src/support/app.ts` 已新增基于当前 headless DOM 语义的 note autocomplete suggestion helper，不再依赖旧的“第二项就是目标笔记”顺序假设。
+- ✅ `apps/server-e2e/src/layout/split_pane.spec.ts` 已改为复用该 helper，避免被 `create-note` / `search-notes` 等 action 项扰动。
+- ✅ 定向验证 `pnpm run --filter @triliumnext/server-e2e e2e -- src/layout/split_pane.spec.ts` 已通过（2 passed）。
+- ✅ 全量验证 `pnpm run --filter @triliumnext/server-e2e e2e` 已通过退出码校验。
+- ⚠️ 全量 Playwright 结果为 `41 passed, 9 flaky`；`src/layout/split_pane.spec.ts:40` 在全量并发执行中首跑超时、retry 后通过，另有多条非 autocomplete 相关用例也存在同类 flaky 现象。
+
 ---
 
 ## 依赖关系图

apps/server-e2e/src/layout/split_pane.spec.ts

@@ -32,8 +32,7 @@ test("Open the note in the correct split pane", async ({ page, context }) => {
     await noteContent.focus();
 
     // Click the search result in the second split.
-    await resultsSelector.locator(".aa-suggestion", { hasText: CODE_NOTE_TITLE })
-        .nth(1).click();
+    await app.getNoteAutocompleteSuggestion(resultsSelector, CODE_NOTE_TITLE).click();
 
     await expect(split2).toContainText(CODE_NOTE_TITLE);
 });
@@ -69,4 +68,4 @@ test("Can directly focus the autocomplete input within the split", async ({ page
 
     await page.waitForTimeout(100);
     await expect(autocomplete).toBeFocused();
-});
+});

apps/server-e2e/src/support/app.ts

@@ -27,6 +27,7 @@ export default class App {
     readonly currentNoteSplitContent: Locator;
     readonly sidebar: Locator;
     private isMobile: boolean = false;
+    private readonly noteAutocompleteSuggestionSelector = ".aa-suggestion:not(.create-note-action):not(.search-notes-action):not(.command-action):not(.external-link-action)";
 
     constructor(page: Page, context: BrowserContext) {
         this.page = page;
@@ -76,12 +77,19 @@ export default class App {
 
         const resultsSelector = this.currentNoteSplit.locator(".note-detail-empty-results");
         await expect(resultsSelector).toContainText(noteTitle);
-        const suggestionSelector = resultsSelector.locator(".aa-suggestion")
-            .nth(1); // Select the second one (best candidate), as the first one is "Create a new note"
+        const suggestionSelector = resultsSelector
+            .locator(this.noteAutocompleteSuggestionSelector, { hasText: noteTitle })
+            .first();
         await expect(suggestionSelector).toContainText(noteTitle);
         await suggestionSelector.click();
     }
 
+    getNoteAutocompleteSuggestion(resultsContainer: Locator, noteTitle: string) {
+        return resultsContainer
+            .locator(this.noteAutocompleteSuggestionSelector, { hasText: noteTitle })
+            .first();
+    }
+
     async goToSettings() {
         await this.page.locator(".launcher-button.bx-cog").click();
     }