Enhance frontend components and introduce new features

- Added a custom light theme in app.css to match the dark theme's palette.
- Introduced AdminBreadcrumbs component for improved navigation in admin pages.
- Implemented Skeleton component for loading states in various views.
- Added ToastContainer for displaying notifications and alerts.
- Enhanced MapView with loading indicators and improved marker handling.
- Updated MapCoordsDisplay to allow copying of shareable links.
- Refactored MapControls and MapContextMenu for better usability.
- Improved user experience in profile and admin pages with loading states and search functionality.

frontend-nuxt/assets/css/app.css

@@ -3,6 +3,28 @@
   themes: light --default;
 }
 
+/* Custom light theme — OKLCH matching the dark theme's violet palette */
+@plugin "daisyui/theme" {
+  name: "light";
+  color-scheme: light;
+  --color-primary: oklch(50% 0.22 277);
+  --color-primary-content: oklch(100% 0 0);
+  --color-secondary: oklch(52% 0.22 293);
+  --color-secondary-content: oklch(100% 0 0);
+  --color-accent: oklch(55% 0.14 203);
+  --color-accent-content: oklch(100% 0 0);
+  --color-neutral: oklch(25% 0.02 249);
+  --color-neutral-content: oklch(98% 0.005 249);
+  --color-base-100: oklch(99% 0.005 250);
+  --color-base-200: oklch(96% 0.008 251);
+  --color-base-300: oklch(92% 0.01 250);
+  --color-base-content: oklch(22% 0.02 249);
+  --color-info: oklch(55% 0.15 250);
+  --color-success: oklch(55% 0.16 155);
+  --color-warning: oklch(75% 0.15 85);
+  --color-error: oklch(55% 0.22 25);
+}
+
 @plugin "daisyui/theme" {
   name: "dark";
   prefersdark: true;