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diff --git a/tests/test_readme_ascii_fenced.py b/tests/test_readme_ascii_fenced.py
index d202b6e7f..58019bb11 100644
--- a/tests/test_readme_ascii_fenced.py
+++ b/tests/test_readme_ascii_fenced.py
@@ -1,16 +1,18 @@
-"""Regression guard for issue #1390 — the README banner / ASCII art was not in a
-fenced code block, so GitHub's markdown collapsed its leading whitespace and the
-box-drawing rules, rendering it misaligned instead of monospace-as-typed.
+"""Regression guard for the README title presentation.
 
-This pins that the decorative banner stays inside a ``` code fence.
+Originally (#1390) the README opened with an ASCII-art banner that had to live
+inside a ``` code fence, otherwise GitHub's markdown collapsed its leading
+whitespace and box-drawing rules and rendered it misaligned. The README refresh
+(#4306) dropped that banner in favour of a centered wordmark image, so the guard
+now pins the wordmark identity instead, while still catching the original failure
+mode if an un-fenced ASCII banner is ever reintroduced.
 """
 from pathlib import Path
 
 README = Path(__file__).resolve().parent.parent / "README.md"
 
-# Distinctive bits of the banner (box-drawing rule + the kaomoji version line).
+# Box-drawing rule from the legacy ASCII banner (the #1390 failure mode).
 _RULE = "─" * 10
-_BANNER_LINE = "Odysseus vers. 1.0"
 
 
 def _fenced_segments(text: str):
@@ -20,15 +22,18 @@ def _fenced_segments(text: str):
     return parts[1::2]
 
 
-def test_readme_banner_is_inside_a_code_fence():
+def test_readme_opens_with_wordmark_title():
+    # The README must still open with a recognizable Odysseus title: now the
+    # centered wordmark image rather than an H1 / ASCII banner.
+    head = "\n".join(README.read_text(encoding="utf-8").splitlines()[:15])
+    assert 'alt="Odysseus"' in head, "README must open with the Odysseus wordmark image"
+
+
+def test_reintroduced_ascii_banner_stays_fenced():
+    # Defensive: if a box-drawing banner is ever added back, it must be fenced so
+    # GitHub renders it monospace-as-typed (the original #1390 regression).
     text = README.read_text(encoding="utf-8")
-    assert _BANNER_LINE in text, "banner line missing from README"
+    if _RULE not in text:
+        return
     inside = "\n".join(_fenced_segments(text))
-    assert _BANNER_LINE in inside, "banner version line must be inside a ``` code fence"
-    assert _RULE in inside, "banner rule line must be inside a ``` code fence"
-
-
-def test_readme_title_stays_a_heading():
-    # The H1 must remain a real heading, not get swallowed into the fence.
-    first = README.read_text(encoding="utf-8").splitlines()[0]
-    assert first.strip() == "# Odysseus"
+    assert _RULE in inside, "ASCII banner rule must be inside a ``` code fence"
diff --git a/tests/test_security_regressions.py b/tests/test_security_regressions.py
index 30d1ccd23..b0209281b 100644
--- a/tests/test_security_regressions.py
+++ b/tests/test_security_regressions.py
@@ -121,9 +121,12 @@ def test_docker_compose_binds_web_ui_to_loopback_by_default():
 
 
 def test_readme_native_quickstart_uses_loopback():
-    readme = Path("README.md").read_text(encoding="utf-8")
-    assert "python -m uvicorn app:app --host 127.0.0.1 --port 7000" in readme
-    assert "0.0.0.0` only when you intentionally want" in readme
+    # The README refresh (#4306) moved the native quickstart into docs/setup.md,
+    # so accept the loopback guidance from either the README or the setup guide.
+    docs = Path("README.md").read_text(encoding="utf-8")
+    docs += "\n" + Path("docs/setup.md").read_text(encoding="utf-8")
+    assert "python -m uvicorn app:app --host 127.0.0.1 --port 7000" in docs
+    assert "0.0.0.0` only when you intentionally want" in docs
 
 
 def test_ollama_cookbook_runner_does_not_force_public_bind():