fix: align sidebar worker action spacing

web/workspace/src/lib/workspace/sidebar/sidebar.css

@@ -387,6 +387,20 @@
   .section-heading-link.active {
     background: var(--sidebar-item-active);
   }
+  .section-action {
+    margin-left: auto;
+    padding: var(--space-1) var(--space-2);
+    border-radius: var(--radius-soft);
+    color: var(--accent);
+    font-size: var(--font-size-compact);
+    font-weight: 650;
+    line-height: var(--line-height-compact);
+    text-decoration: none;
+  }
+  .section-action:hover,
+  .section-action:focus-visible {
+    background: var(--interactive-hover);
+  }
   .section-count {
     color: var(--text-muted);
     font-size: var(--font-size-compact);

web/workspace/src/routes/design-lab/workspace-web-ux/showroom.css

@@ -30,22 +30,6 @@
     white-space: nowrap;
   }
 
-  .workspace-sidebar .section-action {
-    margin-left: auto;
-    padding: var(--space-1) var(--space-2);
-    border-radius: var(--radius-soft);
-    color: var(--accent);
-    font-size: var(--font-size-compact);
-    font-weight: 650;
-    line-height: 16px;
-    text-decoration: none;
-  }
-
-  .workspace-sidebar .section-action:hover,
-  .workspace-sidebar .section-action:focus-visible {
-    background: var(--interactive-hover);
-  }
-
   .showroom {
     width: min(100%, 1180px);
     margin: 0 auto;

web/workspace/tests/bevel-line-contract.test.ts

@@ -122,6 +122,14 @@ Deno.test("Shell regions use selected Bevel edges while open separators use Beve
       showroomCss.includes("margin-inline: var(--space-2)"),
     "The design language and showroom must preserve adjacent area and line hierarchy",
   );
+  assert(
+    sidebarCss.includes(".section-action {") &&
+      sidebarCss.includes("padding: var(--space-1) var(--space-2)") &&
+      sidebarCss.includes("font-size: var(--font-size-compact)") &&
+      sidebarCss.includes("line-height: var(--line-height-compact)") &&
+      !showroomCss.includes(".workspace-sidebar .section-action"),
+    "Workspace Sidebar must own the Workers section action spacing used by the showroom",
+  );
   assert(
     !sidebarCss.includes("border-right:") &&
       !sidebarCss.includes("border-bottom:") &&