Dark mode improvements and FarmaClic rebranding

- Dark mode: gray background instead of pure black
- Dark mode: improved notification card visibility (SavedNotifications)
- Dark mode: improved alerts view badge contrast (AlertsView)
- Dark mode: custom pharmacy-themed background image
- Rebranding: replace all logos with FarmaClic branding
- Update PWA icons, favicon, apple-touch-icon, and mobile app icons

apps/frontend/src/components/SavedNotifications.css

@@ -175,6 +175,41 @@
   to { opacity: 1; transform: translateY(0) scale(1); }
 }
 
+/* Dark mode adaptations */
+[data-theme="dark"] .saved-notifications-item {
+  background: var(--surface-container);
+  border-color: var(--border);
+}
+
+[data-theme="dark"] .saved-notifications-item-name {
+  color: #b0d4b8;
+}
+
+[data-theme="dark"] .saved-notifications-chip {
+  background: rgba(96, 165, 250, 0.15);
+  color: #93c5fd;
+}
+
+[data-theme="dark"] .saved-notifications-chip--pharmacy {
+  background: rgba(142, 212, 160, 0.15);
+  color: #8ed4a0;
+}
+
+[data-theme="dark"] .saved-notifications-address {
+  color: #9ca3af;
+}
+
+[data-theme="dark"] .saved-notifications-remove {
+  border-color: var(--border);
+  color: var(--text-muted);
+}
+
+[data-theme="dark"] .saved-notifications-remove:hover:not(:disabled) {
+  background: rgba(239, 68, 68, 0.12);
+  color: #fca5a5;
+  border-color: #f87171;
+}
+
 @media (max-width: 540px) {
   .saved-notifications-backdrop {
     padding: 2vh 0.5rem;