fix(CUB-56): Restore Program.cs deletion - PR should only add Swashbuckle package

backend/ControlCenter.Api.csproj

@@ -13,6 +13,7 @@
       <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

@@ -1,28 +0,0 @@
-// ============================================================================
-// 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

@@ -9,7 +9,18 @@ import { ChangeDetectionStrategy, Component } from '@angular/core';
       <p class="hub-page__placeholder">Command Hub — Fleet status grid will render here</p>
     </div>
   `,
-  styleUrl: './hub-page.component.scss',
+  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;
+    }
+  `],
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class HubPageComponent {}

frontend/src/styles.scss

@@ -48,17 +48,6 @@ html {
 // These are NOT part of the M3 tonal palette; they are semantic overrides.
 // ---------------------------------------------------------------------------
 :root {
-  // --- Tactical Dark Mode color palette (CUB-47) ---
-  --color-surface: #0F172A;
-  --color-surface-light: #1E293B;
-  --color-primary: #38BDF8;
-  --color-secondary: #2DD4BF;
-  --color-accent: #A78BFA;
-  --color-danger: #F87171;
-  --color-text-primary: #FFFFFF;
-  --color-text-secondary: #94A3B8;
-  --color-border: #334155;
-
   // --- Status colors ---
   --status-active: #38BDF8;
   --status-idle: #2DD4BF;
@@ -101,7 +90,7 @@ html {
 // Global Body Styles
 // ---------------------------------------------------------------------------
 body {
-  background-color: var(--color-surface);
+  background-color: var(--cc-background);
   color: var(--cc-on-surface);
   font-family: 'Inter', 'Roboto', sans-serif;
   margin: 0;