Better error norifications

src/lib/components/ToastContainer.svelte

@@ -0,0 +1,25 @@
+<script lang="ts">
+  import { toast } from '$lib/stores/toast';
+  import ToastNotification from './ToastNotification.svelte';
+
+  // Subscribe to the toast store using Svelte 5 reactivity
+  let toasts = $derived($toast);
+
+  function handleDismiss(id: string) {
+    toast.remove(id);
+  }
+</script>
+
+<!-- Toast container positioned in top-left corner -->
+<div class="fixed top-4 p-2 space-y-3 pointer-events-none max-w-2xl">
+  {#each toasts as toastItem (toastItem.id)}
+    <div class="pointer-events-auto">
+      <ToastNotification
+        message={toastItem.message}
+        type={toastItem.type}
+        duration={toastItem.duration}
+        onDismiss={() => handleDismiss(toastItem.id)}
+      />
+    </div>
+  {/each}
+</div>

src/lib/components/ToastNotification.svelte

@@ -0,0 +1,115 @@
+<script lang="ts">
+  import { onMount } from 'svelte';
+
+  let { 
+    message, 
+    type = 'error',
+    duration = 5000,
+    onDismiss 
+  } = $props<{
+    message: string;
+    type?: 'error' | 'success' | 'warning' | 'info';
+    duration?: number;
+    onDismiss?: () => void;
+  }>();
+
+  let visible = $state(true);
+  let timeoutId: ReturnType<typeof setTimeout>;
+
+  // Auto-dismiss after specified duration
+  onMount(() => {
+    if (duration > 0) {
+      timeoutId = setTimeout(() => {
+        dismiss();
+      }, duration);
+    }
+
+    // Cleanup timeout on component destroy
+    return () => {
+      if (timeoutId) {
+        clearTimeout(timeoutId);
+      }
+    };
+  });
+
+  function dismiss() {
+    visible = false;
+    if (onDismiss) {
+      onDismiss();
+    }
+  }
+
+  // Get styles based on toast type
+  const getToastStyles = (type: string) => {
+    switch (type) {
+      case 'success':
+        return 'border-green-200 bg-green-50 text-green-800';
+      case 'warning':
+        return 'border-yellow-200 bg-yellow-50 text-yellow-800';
+      case 'info':
+        return 'border-blue-200 bg-blue-50 text-blue-800';
+      case 'error':
+      default:
+        return 'border-red-200 bg-red-50 text-red-800';
+    }
+  };
+
+  // Get icon SVG path based on toast type
+  const getIconSvg = (type: string) => {
+    switch (type) {
+      case 'success':
+        return `<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7" />`;
+      case 'warning':
+        return `<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4c-.77-.833-2.694-.833-3.464 0L3.268 16c-.77.833.192 2.5 1.732 2.5z" />`;
+      case 'info':
+        return `<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />`;
+      case 'error':
+      default:
+        return `<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />`;
+    }
+  };
+</script>
+
+{#if visible && message}
+  <div 
+    class="rounded-lg border p-4 shadow-lg w-full {getToastStyles(type)}"
+    role="alert"
+    aria-live="polite"
+  >
+    <div class="flex items-start gap-3">
+      <!-- Icon -->
+      <div class="flex-shrink-0">
+        <svg 
+          class="h-5 w-5" 
+          xmlns="http://www.w3.org/2000/svg" 
+          fill="none" 
+          viewBox="0 0 24 24" 
+          stroke="currentColor"
+          aria-hidden="true"
+        >
+          {@html getIconSvg(type)}
+        </svg>
+      </div>
+      
+      <!-- Message -->
+      <div class="flex-1">
+        <p class="text-sm font-medium">
+          {message}
+        </p>
+      </div>
+      
+      <!-- Close button -->
+      <button
+        onclick={dismiss}
+        class="flex-shrink-0 ml-2 text-current opacity-70 hover:opacity-100 transition-opacity"
+        aria-label="Dismiss notification"
+      >
+        <svg class="h-4 w-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12" />
+        </svg>
+      </button>
+    </div>
+    
+    <!-- Toast has no progress bar as requested -->
+  </div>
+{/if}