Merge b626-631 (batch #626+)

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Components/Pages/ApiKeys.razor

@@ -142,6 +142,13 @@
         try
         {
             _keys = await Keys.ListAsync(default);
+            // The one-time banner is only meaningful while its key exists; the credential is
+            // otua_<keyId>_<secret>, so drop it once no listed key matches (deleted here or elsewhere).
+            if (_created is not null
+                && !_keys.Any(k => _created.StartsWith($"otua_{k.ApiKeyId}_", StringComparison.Ordinal)))
+            {
+                _created = null;
+            }
         }
         catch (Exception ex)
         {

src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/wwwroot/css/site.css

@@ -48,3 +48,14 @@
     flex: 0 0 18px;
     width: 18px;
 }
+
+/* Modal backdrop overran the viewport on /raw (#631). The theme's `.rise` entrance animation runs with
+   `animation-fill-mode: both`, which keeps its final keyframe's transform applied for good — and ANY
+   transform (even the identity it leaves) makes that section the containing block for position:fixed
+   descendants. A modal rendered inside a `.panel.rise` therefore had its fixed backdrop offset by the
+   panel's left edge, so it ran 240px past the viewport and the page grew a horizontal scrollbar.
+   `backwards` keeps the hidden start state during the stagger delay but drops the transform once the
+   animation ends. (Upstream fix belongs in ZB.MOM.WW.Theme's theme.css.) */
+.rise {
+    animation-fill-mode: backwards;
+}