feat: flat design Sunset Glitch + download manager + settings + recommendations overhaul

- Sunset Glitch color palette applied to all templates
- Font Awesome icons throughout UI
- Download manager with parallel queue and progress tracking
- Settings page with dynamic configuration
- Recommendations router enhanced with scoring
- Local vendor libs (Alpine.js, HTMX) for offline support
- Auto test suite with screenshots
- Series releases list component
- New download model

templates/components/toast_container.html

@@ -1,10 +1,12 @@
 <div id="toast-container" 
      class="toast-container"
+     style="pointer-events: none;"
      x-data="{ toasts: [] }"
      @show-toast.window="toasts.push({ id: Date.now(), message: $event.detail.message, type: $event.detail.type || 'info' }); setTimeout(() => { toasts = toasts.filter(t => t.id !== toasts[0].id) }, 5000)">
     
     <template x-for="toast in toasts" :key="toast.id">
         <div class="toast" 
+             style="pointer-events: auto;"
              :class="'toast-' + toast.type"
              x-show="true"
              x-transition:enter="toast-enter"
@@ -33,6 +35,9 @@
     display: flex;
     flex-direction: column;
     gap: 10px;
+    pointer-events: none;
+    max-height: 80vh;
+    overflow: hidden;
 }
 .toast {
     min-width: 250px;