diff --git a/tests/test_palier8.py b/tests/test_palier8.py
new file mode 100644
index 0000000..5cd1f0d
--- /dev/null
+++ b/tests/test_palier8.py
@@ -0,0 +1,41 @@
+"""Palier 8 (0.11.0): navigation manuelle du Wallboard."""
+
+from datetime import datetime, timedelta, timezone
+
+
+def _make_two_active_projects(fake_gitea):
+    """The fake's second repo is 800 days old (inactive): revive it."""
+    now = datetime.now(timezone.utc)
+    for repo in fake_gitea.repos:
+        if repo["full_name"] == "Projets/vieux":
+            repo["updated_at"] = now.strftime("%Y-%m-%dT%H:%M:%SZ")
+
+
+def test_wall_nav_markup_with_multiple_slides(client, fake_gitea):
+    _make_two_active_projects(fake_gitea)
+    r = client.get("/wall")
+    assert r.status_code == 200
+    assert r.text.count("wall-slide") >= 2
+    assert 'id="wall-prev"' in r.text
+    assert 'id="wall-next"' in r.text
+    assert 'id="wall-dots"' in r.text
+    assert 'id="wall-paused"' in r.text
+    assert "1 / 2" in r.text and "2 / 2" in r.text
+
+
+def test_wall_no_nav_with_single_slide(client, fake_gitea):
+    r = client.get("/wall")
+    assert r.status_code == 200
+    assert 'id="wall-prev"' not in r.text
+
+
+def test_wall_js_contract():
+    js = open("static/js/wall.js", encoding="utf-8").read()
+    # Arrow navigation + hard pause + position persistence.
+    assert "ArrowRight" in js and "ArrowLeft" in js
+    assert "sessionStorage" in js
+    assert "MANUAL_PAUSE_MS" in js
+    # The live listener must use the NAMED gitea event (onmessage
+    # never fires for named SSE events — the 0.6.0 bug).
+    assert "addEventListener('gitea'" in js
+    assert "source.onmessage" not in js