Add business dashboard dark mode from Super Admin theme setting.

Login and in-app surfaces follow tenant themeMode, matching customer dark tokens, with themed switches and tighter card/table chrome.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/business/src/components/ImageCropper.module.css

@@ -15,7 +15,7 @@
   min-height: 0;
   border: 2px dashed rgba(148, 163, 184, 0.4);
   border-radius: var(--radius-sm);
-  background: rgba(255, 255, 255, 0.4);
+  background: var(--surface);
   color: var(--text-secondary);
   font-size: 14px;
   cursor: pointer;
@@ -89,7 +89,7 @@
   border: 1px solid var(--glass-border);
   border-radius: var(--radius-sm);
   overflow: hidden;
-  background: rgba(255, 255, 255, 0.5);
+  background: var(--surface);
 }
 
 .cropArea {