Add shared empty states, customer product filters, and SSO handoff across dashboards.

Standardize list empty UI, searchable country fields, customer-products filter row, password/login polish, and one-time business dashboard handoff from the customer app.

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

apps/customer/src/components/Sidebar.module.css

@@ -29,8 +29,9 @@
   height: 40px;
   object-fit: contain;
   flex-shrink: 0;
-  background: transparent;
-  border-radius: 8px;
+  background: none;
+  border-radius: 0;
+  mix-blend-mode: multiply;
 }
 
 .brandFallback {
@@ -49,9 +50,9 @@
 }
 
 .brandLogoUploaded {
-  border-radius: 8px;
-  object-fit: cover;
-  background: transparent;
+  border-radius: 0;
+  object-fit: contain;
+  background: none;
 }
 
 .brandText {
@@ -118,7 +119,6 @@
 .navItem.active {
   background: rgba(var(--primary-rgb) / 0.1);
   color: var(--primary);
-  border-color: var(--primary);
 }
 
 .navItem.active:hover {
@@ -177,7 +177,6 @@
 .subNavActive {
   background: rgba(var(--primary-rgb) / 0.1);
   color: var(--primary);
-  border-color: var(--primary);
 }
 
 .subNavActive:hover {