feat: Add customer management, payments, and push notifications with security enhancements

Major Feature Additions:
- Customer management: Full CRUD with data export and privacy compliance
- Payment management: Centralized payment tracking and administration
- Push notification subscriptions: Manage and track web push subscriptions

Security Enhancements:
- IP whitelist middleware for administrative endpoints
- Data retention service with configurable policies
- Enhanced push notification security documentation
- Security fixes progress tracking (2025-11-14)

UI/UX Improvements:
- Enhanced navigation with improved mobile responsiveness
- Updated admin dashboard with order status counts
- Improved product CRUD forms
- New customer and payment management interfaces

Backend Improvements:
- Extended customer service with data export capabilities
- Enhanced order service with status count queries
- Improved crypto payment service with better error handling
- Updated validators and configuration

Documentation:
- DEPLOYMENT_NGINX_GUIDE.md: Nginx deployment instructions
- IP_STORAGE_ANALYSIS.md: IP storage security analysis
- PUSH_NOTIFICATION_SECURITY.md: Push notification security guide
- UI_UX_IMPROVEMENT_PLAN.md: Planned UI/UX enhancements
- UI_UX_IMPROVEMENTS_COMPLETED.md: Completed improvements

Cleanup:
- Removed temporary database WAL files
- Removed stale commit message file

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

LittleShop/wwwroot/css/enhanced-navigation.css

@@ -0,0 +1,312 @@
+/*
+ * Enhanced Navigation Styles for TeleShop Admin
+ * Improves dropdown menus and active state highlighting
+ */
+
+/* ========================================
+   NAVIGATION BAR
+   ======================================== */
+
+/* Modern Navbar Styling */
+.navbar {
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
+    border-bottom: 1px solid #e5e7eb;
+}
+
+.navbar-brand {
+    font-weight: 700;
+    font-size: 1.25rem;
+    color: #2563eb !important;
+    transition: all 0.2s ease;
+}
+
+.navbar-brand:hover {
+    transform: scale(1.05);
+}
+
+.navbar-brand i {
+    margin-right: 0.5rem;
+}
+
+/* ========================================
+   NAVIGATION LINKS
+   ======================================== */
+
+.nav-link {
+    font-weight: 500;
+    color: #4b5563 !important;
+    transition: all 0.2s ease;
+    border-radius: 0.375rem;
+    margin: 0 0.25rem;
+    padding: 0.5rem 1rem !important;
+}
+
+.nav-link:hover {
+    color: #2563eb !important;
+    background-color: #eff6ff;
+}
+
+.nav-link.active {
+    color: #2563eb !important;
+    background-color: #dbeafe;
+    font-weight: 600;
+}
+
+.nav-link i {
+    margin-right: 0.5rem;
+    font-size: 0.875rem;
+}
+
+/* ========================================
+   DROPDOWN MENUS
+   ======================================== */
+
+.dropdown-menu {
+    border: 1px solid #e5e7eb;
+    border-radius: 0.5rem;
+    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
+                0 4px 6px -2px rgba(0, 0, 0, 0.05);
+    padding: 0.5rem;
+    min-width: 220px;
+    margin-top: 0.5rem;
+}
+
+.dropdown-item {
+    border-radius: 0.375rem;
+    padding: 0.625rem 1rem;
+    font-weight: 500;
+    color: #4b5563;
+    transition: all 0.15s ease;
+    display: flex;
+    align-items: center;
+}
+
+.dropdown-item i {
+    margin-right: 0.75rem;
+    width: 1.25rem;
+    text-align: center;
+    color: #6b7280;
+    transition: color 0.15s ease;
+}
+
+.dropdown-item:hover {
+    background-color: #eff6ff;
+    color: #2563eb;
+    transform: translateX(2px);
+}
+
+.dropdown-item:hover i {
+    color: #2563eb;
+}
+
+.dropdown-item:active {
+    background-color: #dbeafe;
+}
+
+.dropdown-divider {
+    margin: 0.5rem 0;
+    border-color: #e5e7eb;
+}
+
+/* ========================================
+   DROPDOWN TOGGLE INDICATOR
+   ======================================== */
+
+.dropdown-toggle::after {
+    margin-left: 0.5rem;
+    vertical-align: 0.1em;
+    transition: transform 0.2s ease;
+}
+
+.dropdown-toggle[aria-expanded="true"]::after {
+    transform: rotate(180deg);
+}
+
+/* ========================================
+   ACTIVE DROPDOWN HIGHLIGHTING
+   ======================================== */
+
+/* Highlight dropdown parent when child page is active */
+.nav-item.dropdown .nav-link.active {
+    background-color: #dbeafe;
+    color: #2563eb !important;
+}
+
+.nav-item.dropdown .nav-link.active::before {
+    content: "";
+    position: absolute;
+    bottom: 0;
+    left: 50%;
+    transform: translateX(-50%);
+    width: 80%;
+    height: 3px;
+    background: linear-gradient(90deg, transparent, #2563eb, transparent);
+    border-radius: 2px 2px 0 0;
+}
+
+.nav-item.dropdown {
+    position: relative;
+}
+
+/* ========================================
+   RESPONSIVE IMPROVEMENTS
+   ======================================== */
+
+@media (max-width: 768px) {
+    .navbar-collapse {
+        background-color: white;
+        border-radius: 0.5rem;
+        margin-top: 0.5rem;
+        padding: 1rem;
+        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
+    }
+
+    .nav-link {
+        padding: 0.75rem 1rem !important;
+        margin: 0.25rem 0;
+    }
+
+    .dropdown-menu {
+        border: none;
+        box-shadow: none;
+        padding-left: 1rem;
+        margin-top: 0;
+        background-color: #f9fafb;
+    }
+
+    .dropdown-item {
+        font-size: 0.9rem;
+    }
+}
+
+/* ========================================
+   BREADCRUMB NAVIGATION (Future Enhancement)
+   ======================================== */
+
+.breadcrumb {
+    background-color: transparent;
+    padding: 0.5rem 0;
+    margin-bottom: 1rem;
+    font-size: 0.875rem;
+}
+
+.breadcrumb-item {
+    color: #6b7280;
+}
+
+.breadcrumb-item.active {
+    color: #2563eb;
+    font-weight: 600;
+}
+
+.breadcrumb-item + .breadcrumb-item::before {
+    content: "›";
+    color: #9ca3af;
+    padding: 0 0.5rem;
+}
+
+.breadcrumb-item a {
+    color: #6b7280;
+    text-decoration: none;
+    transition: color 0.2s ease;
+}
+
+.breadcrumb-item a:hover {
+    color: #2563eb;
+}
+
+/* ========================================
+   ACCESSIBILITY ENHANCEMENTS
+   ======================================== */
+
+.nav-link:focus,
+.dropdown-item:focus {
+    outline: 2px solid #2563eb;
+    outline-offset: 2px;
+    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
+}
+
+/* Keyboard navigation indicator */
+.nav-link:focus-visible,
+.dropdown-item:focus-visible {
+    outline: 2px solid #2563eb;
+    outline-offset: 2px;
+}
+
+/* ========================================
+   ANIMATION & MICRO-INTERACTIONS
+   ======================================== */
+
+@keyframes slideDown {
+    from {
+        opacity: 0;
+        transform: translateY(-10px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+.dropdown-menu.show {
+    animation: slideDown 0.2s ease-out;
+}
+
+/* Hover effect for dropdown parent */
+.nav-item.dropdown:hover .nav-link {
+    background-color: #f3f4f6;
+}
+
+/* ========================================
+   NOTIFICATION BADGES (For Future Use)
+   ======================================== */
+
+.nav-link .badge {
+    position: absolute;
+    top: 0.25rem;
+    right: 0.25rem;
+    font-size: 0.625rem;
+    padding: 0.2rem 0.4rem;
+    border-radius: 0.75rem;
+    background-color: #ef4444;
+    color: white;
+    font-weight: 700;
+    min-width: 1.25rem;
+    text-align: center;
+}
+
+/* ========================================
+   LOADING STATE (For Future Enhancement)
+   ======================================== */
+
+.nav-link.loading {
+    opacity: 0.6;
+    pointer-events: none;
+}
+
+.nav-link.loading::after {
+    content: "";
+    display: inline-block;
+    width: 0.75rem;
+    height: 0.75rem;
+    margin-left: 0.5rem;
+    border: 2px solid currentColor;
+    border-right-color: transparent;
+    border-radius: 50%;
+    animation: spin 0.6s linear infinite;
+}
+
+@keyframes spin {
+    to {
+        transform: rotate(360deg);
+    }
+}
+
+/* ========================================
+   PWA INSTALL ALERT (Inline Dashboard Content)
+   ======================================== */
+
+/* PWA install alert is now inline Bootstrap alert component */
+/* No custom styles needed - using standard Bootstrap alert-info */
+/* Dismiss functionality handled via Bootstrap's data-bs-dismiss */
+/* Visibility controlled by JavaScript based on localStorage */