diff --git a/tests/e2e/excalidraw.spec.js b/tests/e2e/excalidraw.spec.js
index dfa88dc..0936c12 100644
--- a/tests/e2e/excalidraw.spec.js
+++ b/tests/e2e/excalidraw.spec.js
@@ -25,7 +25,7 @@ async function login(page) {
     await page.click('#login-btn');
   }
   // Wait until app init() resolved (all handlers bound).
-  await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
+  await page.waitForFunction(() => document.readyState === 'complete' && !!document.querySelector('.tree-item'), { timeout: 20000 });
 }
 
 async function openFile(page, vault, filePath) {
diff --git a/tests/e2e/header-sidebar.spec.js b/tests/e2e/header-sidebar.spec.js
index 9b3bea9..cafadba 100644
--- a/tests/e2e/header-sidebar.spec.js
+++ b/tests/e2e/header-sidebar.spec.js
@@ -28,7 +28,7 @@ async function login(page) {
     await page.fill('#login-password', CREDS.password);
     await page.click('#login-btn');
   }
-  await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
+  await page.waitForFunction(() => document.readyState === 'complete' && !!document.querySelector('.tree-item'), { timeout: 20000 });
 }
 
 async function authEnabled(page) {
diff --git a/tests/e2e/image-viewer.spec.js b/tests/e2e/image-viewer.spec.js
index 85911e7..c552a58 100644
--- a/tests/e2e/image-viewer.spec.js
+++ b/tests/e2e/image-viewer.spec.js
@@ -26,7 +26,7 @@ async function login(page) {
     await page.fill('#login-password', CREDS.password);
     await page.click('#login-btn');
   }
-  await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
+  await page.waitForFunction(() => document.readyState === 'complete' && !!document.querySelector('.tree-item'), { timeout: 20000 });
 }
 
 async function openFile(page, vault, filePath) {
diff --git a/tests/e2e/media-viewer.spec.js b/tests/e2e/media-viewer.spec.js
index 18baa71..5ca245f 100644
--- a/tests/e2e/media-viewer.spec.js
+++ b/tests/e2e/media-viewer.spec.js
@@ -25,7 +25,7 @@ async function login(page) {
     await page.fill('#login-password', CREDS.password);
     await page.click('#login-btn');
   }
-  await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
+  await page.waitForFunction(() => document.readyState === 'complete' && !!document.querySelector('.tree-item'), { timeout: 20000 });
 }
 
 async function openFile(page, vault, filePath) {
diff --git a/tests/e2e/nav-tab.spec.js b/tests/e2e/nav-tab.spec.js
index 2cb3957..98650ab 100644
--- a/tests/e2e/nav-tab.spec.js
+++ b/tests/e2e/nav-tab.spec.js
@@ -12,7 +12,7 @@ import { test, expect } from '@playwright/test';
 
 async function boot(page) {
   await page.goto('/');
-  await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
+  await page.waitForFunction(() => document.readyState === 'complete' && !!document.querySelector('.tree-item'), { timeout: 20000 });
   await page.waitForSelector('#dashboard-home, #search-input', { timeout: 15000 });
 }
 
diff --git a/tests/e2e/pdf-viewer.spec.js b/tests/e2e/pdf-viewer.spec.js
index 515f4cf..b1bea0c 100644
--- a/tests/e2e/pdf-viewer.spec.js
+++ b/tests/e2e/pdf-viewer.spec.js
@@ -30,7 +30,7 @@ async function login(page) {
     await page.fill('#login-password', CREDS.password);
     await page.click('#login-btn');
   }
-  await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
+  await page.waitForFunction(() => document.readyState === 'complete' && !!document.querySelector('.tree-item'), { timeout: 20000 });
 }
 
 async function openFile(page, vault, filePath) {
diff --git a/tests/e2e/xlsx-viewer.spec.js b/tests/e2e/xlsx-viewer.spec.js
index ff9976a..e1cceaf 100644
--- a/tests/e2e/xlsx-viewer.spec.js
+++ b/tests/e2e/xlsx-viewer.spec.js
@@ -57,7 +57,7 @@ async function login(page) {
     await page.fill('#login-password', process.env.OBSIGATE_PASS || 'test123');
     await page.click('#login-btn');
   }
-  await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
+  await page.waitForFunction(() => document.readyState === 'complete' && !!document.querySelector('.tree-item'), { timeout: 20000 });
 }
 
 async function openFixture(page) {
diff --git a/tests/e2e/xss.spec.js b/tests/e2e/xss.spec.js
index 68022f4..e3600a2 100644
--- a/tests/e2e/xss.spec.js
+++ b/tests/e2e/xss.spec.js
@@ -117,7 +117,7 @@ test.describe('XSS — lecteur markdown (BUG-021)', () => {
     await api(request, 'POST', `/api/file/${VAULT}`, { path: XSS_FILE, content: `${XSS_BODY}\n` });
 
     await page.goto(BASE);
-    await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
+    await page.waitForFunction(() => document.readyState === 'complete' && !!document.querySelector('.tree-item'), { timeout: 20000 });
     await openFile(page, VAULT, XSS_FILE);
 
     const content = page.locator('#content-area');