Merge pull request 'feat(CUB-52): Responsive Hub Grid CSS' (#12) from agent/rex/CUB-52-responsive-hub-grid into dev

Reviewed-on: #12
Reviewed-by: Otto the Minion <otto@code.cubecraftcreations.com>
Reviewed-by: Joshua <joshua@cnjmail.com>

backend/ControlCenter.Api.csproj

@@ -8,12 +8,11 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.14" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.4">
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
-      <PrivateAssets>all</PrivateAssets>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.4">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
-    <PackageReference Include="Swashbuckle.AspNetCore" Version="10.1.7" />
   </ItemGroup>
 
 </Project>

frontend/src/app/pages/hub/hub-page.component.scss

@@ -0,0 +1,28 @@
+// ============================================================================
+// Hub Page — Responsive AgentCard Grid
+// Desktop (≥1024px): 2×2 grid
+// Mobile (<1024px): single-column stack
+// ============================================================================
+
+.hub-page {
+  display: grid;
+  grid-template-columns: 1fr;
+  gap: 16px;
+  padding: var(--cc-section-padding, 16px);
+  min-height: 400px;
+  overflow-x: hidden;
+}
+
+.hub-page__placeholder {
+  color: var(--cc-on-surface-variant);
+  font-size: 16px;
+  text-align: center;
+  padding: 24px 0;
+}
+
+// Desktop / kiosk breakpoint — 2-column grid
+@media (min-width: 1024px) {
+  .hub-page {
+    grid-template-columns: repeat(2, 1fr);
+  }
+}

frontend/src/app/pages/hub/hub-page.component.ts

@@ -9,18 +9,7 @@ import { ChangeDetectionStrategy, Component } from '@angular/core';
       <p class="hub-page__placeholder">Command Hub — Fleet status grid will render here</p>
     </div>
   `,
-  styles: [`
-    .hub-page {
-      display: flex;
-      align-items: center;
-      justify-content: center;
-      min-height: 400px;
-    }
-    .hub-page__placeholder {
-      color: var(--cc-on-surface-variant);
-      font-size: 16px;
-    }
-  `],
+  styleUrl: './hub-page.component.scss',
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class HubPageComponent {}