show sync button for admin

tests/e2e/test_global_tuning.py

@@ -416,12 +416,13 @@ def test_tuning_page_a11y_and_no_cdn(
     assert announcer.get_attribute("role") == "status"
     assert announcer.get_attribute("aria-live") == "polite"
 
-    # ≥44px touch targets on every interactive control.
+    # ≥44px touch targets on every interactive control (the New chat
+    # button is chat-page only — owner rework 2026-08-28 — so it is not
+    # a tuning-page target).
     for selector in (
         "#tune-save",
         "#tune-note",
         "#nav-tuning",
-        ".new-chat-btn",
         "#sign-out-btn",
         ".tuning-edit",
         ".tuning-delete",
@@ -447,7 +448,7 @@ def test_tuning_page_a11y_and_no_cdn(
     # Dark theme: the page canvas is the phase-08 dark bg (body stays
     # transparent for the background layers).
     bg = page.evaluate("() => getComputedStyle(document.documentElement).backgroundColor")
-    assert bg == "rgb(10, 14, 23)", f"expected the dark page bg, got {bg}"
+    assert bg == "rgb(15, 10, 10)", f"expected the dark page bg (rebrand #0f0a0a), got {bg}"
 
     # Contrast: the live text/background pairs compute ≥ 4.5:1 (AA).
     pairs = page.evaluate(