feat(infinite-canvas): add infinite canvas component with drag and zoom functionality

- Implemented InfiniteCanvas.vue for rendering an infinite canvas with drag and zoom capabilities.
- Created useInfiniteCanvas composable for managing canvas state and interactions.
- Added useImagePreloader composable for preloading images and videos.
- Introduced constants for physics, touch interactions, viewport settings, and zoom defaults.
- Developed utility functions for touch handling and media type detection.
- Defined TypeScript types for canvas items, grid items, and composables.
- Registered components and composables in the Nuxt module.
- Added screenshot generation functionality for content files.
- Updated package.json to include capture-website dependency.

app/components/chat/CommandPalette.vue

@@ -45,10 +45,15 @@ defineShortcuts({
   t: () => toggleDark({ clientX: window.innerWidth / 2, clientY: window.innerHeight }),
 })
 
+const isMobile = computed(() => {
+  if (!import.meta.client)
+    return false
+  return isMobileDevice(navigator.userAgent, window.innerWidth)
+})
 const activeElement = useActiveElement()
 watch(openMessageModal, async () => {
   await nextTick()
-  if (activeElement.value instanceof HTMLElement) {
+  if (activeElement.value instanceof HTMLElement && isMobile.value) {
     activeElement.value.blur()
   }
 })