show sync button for admin

tests/e2e/test_document_viewer.py

@@ -370,7 +370,7 @@ def test_standalone_page_still_works(
     page.goto(f"{app_url}/document.html?source=docs&path=homelab%2Fkubernetes.md")
     expect(page.locator("#doc-content .doc-md")).not_to_be_empty()
     bg = page.evaluate("() => getComputedStyle(document.documentElement).backgroundColor")
-    assert bg == "rgb(10, 14, 23)"
+    assert bg == "rgb(15, 10, 10)", "the dark-red rebrand canvas (#0f0a0a)"
 
     refs = page.evaluate(
         """() => [...document.querySelectorAll("script[src], link[href]")]
@@ -409,14 +409,15 @@ def test_modal_theme_and_no_cdn(
     expect(page.locator("#doc-modal-title")).to_have_text("Kubernetes Homelab Cluster")
     expect(page.locator("#doc-modal-content .doc-md")).not_to_be_empty()
 
-    # Dark theme (phase 08): the page background is untouched, and the
-    # modal panel sits on the Phase-08 surface colour (#121a2e).
+    # Dark theme (phase 08, dark-red rebrand 2026-08-28): the page
+    # background is untouched, and the modal panel sits on the --surface
+    # colour (#1a0f0f).
     bg = page.evaluate("() => getComputedStyle(document.documentElement).backgroundColor")
-    assert bg == "rgb(10, 14, 23)"
+    assert bg == "rgb(15, 10, 10)"
     surface = page.evaluate(
         "() => getComputedStyle(document.querySelector('.doc-modal-panel')).backgroundColor"
     )
-    assert surface == "rgb(18, 26, 46)", f"panel not on the Phase-08 surface: {surface}"
+    assert surface == "rgb(26, 15, 15)", f"panel not on the --surface colour: {surface}"
 
     # No-CDN: every script/link reference on the chat page (the touched
     # page) is same-origin or a data: URI — the modal adds no assets.