diff --git a/DeepDrftManager/Components/Pages/Tracks/CmsCutBrowser.razor b/DeepDrftManager/Components/Pages/Tracks/CmsCutBrowser.razor
index 4e6ced7..b2c23db 100644
--- a/DeepDrftManager/Components/Pages/Tracks/CmsCutBrowser.razor
+++ b/DeepDrftManager/Components/Pages/Tracks/CmsCutBrowser.razor
@@ -4,8 +4,8 @@
 
 @* CUTS tab content (Phase 9 §8.A/§8.C): the rich CmsAlbumBrowser grid filtered to Cut releases, so the
    tab carries expand-tracks, delete, the Type chip, and per-row edit identically to the ALL tab — no
-   forked grid. Cuts have no medium-specific row action, so no RowActions slot is supplied; the grid
-   renders its shared edit/delete only. Embedded as tab content only; no standalone @page route. *@
+   forked grid. Cuts have no medium-specific action, so no SpecialColumns are supplied; the grid renders
+   its shared edit/delete only. Embedded as tab content only; no standalone @page route. *@
 <CmsAlbumBrowser Releases="Releases"
                  IsLoading="Loading"
                  OnReleasesChanged="ReloadAsync" />
diff --git a/DeepDrftManager/Components/Pages/Tracks/CmsMediumBrowserBase.cs b/DeepDrftManager/Components/Pages/Tracks/CmsMediumBrowserBase.cs
index 72b15b0..0d93a73 100644
--- a/DeepDrftManager/Components/Pages/Tracks/CmsMediumBrowserBase.cs
+++ b/DeepDrftManager/Components/Pages/Tracks/CmsMediumBrowserBase.cs
@@ -13,7 +13,7 @@ namespace DeepDrftManager.Components.Pages.Tracks;
 /// it (§8.C parity — reuse, don't fork). This base owns the loading flag, the medium-filtered load, the
 /// per-release row projection, and a cover-thumbnail helper; subclasses supply the <see cref="Medium"/>,
 /// an error noun, and their bespoke per-row action (Session hero upload, Mix waveform generate) via the
-/// rich grid's <c>RowActions</c> slot, looking their action-state row up with <see cref="RowFor"/>.
+/// rich grid's <c>SpecialColumns</c> column model, looking their action-state row up with <see cref="RowFor"/>.
 /// </summary>
 /// <typeparam name="TRow">The subclass's row model wrapping a <see cref="ReleaseDto"/> plus its
 /// medium-specific action state (upload/generate flags). The rich grid renders from the bare
@@ -42,8 +42,8 @@ public abstract class CmsMediumBrowserBase<TRow> : ComponentBase where TRow : cl
     // it never sees TRow. Rebuilt on every (re)load so the grid re-projects against a fresh reference.
     protected IReadOnlyList<ReleaseDto> Releases { get; private set; } = Array.Empty<ReleaseDto>();
 
-    // release.Id → action-state row, so a RowActions fragment (which the grid hands a ReleaseDto) can
-    // recover its TRow. Rebuilt alongside Rows so a refresh never leaves a stale row behind.
+    // release.Id → action-state row, so a SpecialColumns cell delegate (which the grid hands a ReleaseDto)
+    // can recover its TRow. Rebuilt alongside Rows so a refresh never leaves a stale row behind.
     private Dictionary<long, TRow> _rowsById = new();
 
     protected override async Task OnInitializedAsync() => await LoadAsync();
diff --git a/DeepDrftManager/Components/Pages/Tracks/CmsMixBrowser.razor b/DeepDrftManager/Components/Pages/Tracks/CmsMixBrowser.razor
index e2d89a6..d291411 100644
--- a/DeepDrftManager/Components/Pages/Tracks/CmsMixBrowser.razor
+++ b/DeepDrftManager/Components/Pages/Tracks/CmsMixBrowser.razor
@@ -8,9 +8,10 @@
 @* Embedded as the MIXES tab content of the Release Archive (Phase 9 §8.A), and still routable at
    /tracks/mixes for direct-URL access. The grid is the rich CmsAlbumBrowser filtered to Mixes (§8.C
    parity: expand-tracks, delete, Type chip, per-row edit), with the Mix waveform generate supplied as
-   its medium-specific RowActions slot so that affordance survives the move off the thin table. When
-   embedded, the page chrome (title, container, the now-meaningless "Back to Release Archive" button) is
-   suppressed; the standalone route keeps it. The waveform affordance (9.5.E) is preserved in both. *@
+   its medium-specific special-action column so that affordance survives the move off the thin table.
+   When embedded, the page chrome (title, container, the now-meaningless "Back to Release Archive"
+   button) is suppressed; the standalone route keeps it. The waveform affordance (9.5.E) is preserved
+   in both. *@
 @if (Embedded)
 {
     @GridContent
@@ -60,10 +61,15 @@ else
                                                            OnReleasesChanged="ReloadAsync"
                                                            SpecialColumns="_specialColumns" />;
 
-    private IReadOnlyList<SpecialActionColumn> _specialColumns => new[]
+    // Allocated once per component instance in OnInitialized (field initializers cannot reference
+    // instance members, so initialization is deferred to the first lifecycle hook).
+    private IReadOnlyList<SpecialActionColumn> _specialColumns = Array.Empty<SpecialActionColumn>();
+
+    protected override void OnInitialized()
     {
-        new SpecialActionColumn("Waveform", WaveformCell)
-    };
+        _specialColumns = new[] { new SpecialActionColumn("Waveform", WaveformCell) };
+        base.OnInitialized();
+    }
 
     // Per-row cell for the dedicated "Waveform" column: status icon plus generate/regenerate button with
     // progress. Recovers the typed MixRow via RowFor; skips rendering for a release not on the page.
diff --git a/DeepDrftManager/Components/Pages/Tracks/CmsSessionBrowser.razor b/DeepDrftManager/Components/Pages/Tracks/CmsSessionBrowser.razor
index 11e2d8d..7e56266 100644
--- a/DeepDrftManager/Components/Pages/Tracks/CmsSessionBrowser.razor
+++ b/DeepDrftManager/Components/Pages/Tracks/CmsSessionBrowser.razor
@@ -9,9 +9,10 @@
 @* Embedded as the SESSIONS tab content of the Release Archive (Phase 9 §8.A), and still routable at
    /tracks/sessions for direct-URL access. The grid is the rich CmsAlbumBrowser filtered to Sessions
    (§8.C parity: expand-tracks, delete, Type chip, per-row edit), with the Session hero upload supplied
-   as its medium-specific RowActions slot so that affordance survives the move off the thin table. When
-   embedded, the page chrome (title, container, the now-meaningless "Back to Release Archive" button) is
-   suppressed; the standalone route keeps it. The hero affordance (9.5.E) is preserved in both contexts. *@
+   as its medium-specific special-action column so that affordance survives the move off the thin table.
+   When embedded, the page chrome (title, container, the now-meaningless "Back to Release Archive"
+   button) is suppressed; the standalone route keeps it. The hero affordance (9.5.E) is preserved in
+   both contexts. *@
 @if (Embedded)
 {
     @GridContent
@@ -61,10 +62,15 @@ else
                                                            OnReleasesChanged="ReloadAsync"
                                                            SpecialColumns="_specialColumns" />;
 
-    private IReadOnlyList<SpecialActionColumn> _specialColumns => new[]
+    // Allocated once per component instance in OnInitialized (field initializers cannot reference
+    // instance members, so initialization is deferred to the first lifecycle hook).
+    private IReadOnlyList<SpecialActionColumn> _specialColumns = Array.Empty<SpecialActionColumn>();
+
+    protected override void OnInitialized()
     {
-        new SpecialActionColumn("Hero", HeroCell)
-    };
+        _specialColumns = new[] { new SpecialActionColumn("Hero", HeroCell) };
+        base.OnInitialized();
+    }
 
     // Per-row cell for the dedicated "Hero" column: thumbnail preview plus set/replace upload button with
     // progress. Recovers the typed SessionRow via RowFor; skips rendering for a release not on the page.