refactor(alpine): migrate remaining pages to x-init declarative initialization

- Remove DOMContentLoaded event listeners from analytics.ts and docs.ts
- Rely on x-init attribute in templates for page initialization
- Clean up unused exports from collections.ts Alpine data
- Add x-init calls to admin_library, analytics, and docs templates
- Normalize quote style in collections WebSocket script (single to double)
- Disable Add Books button in collection detail (pending implementation)

web/src/analytics.ts

@@ -122,8 +122,6 @@ function renderPopularBooks(popular: PopularBooksResponse): void {
     .join("");
 }
 
-document.addEventListener("DOMContentLoaded", loadAnalytics);
-
 export { loadAnalytics };
 
 Alpine.data("analytics", () => ({

web/src/collections.ts

@@ -405,60 +405,32 @@ function filterIcons(searchTerm: string): void {
 
 // Export functions globally
 export {
-  addbooksToAdd,
-  backToCollections,
   closeCollectionModal,
   createRule,
   deleteRule,
-  filterCollectionBooks,
   filterIcons,
-  hideAddBooksModal,
-  initCollectionDetail,
   initColorSelection,
-  initIconSelection,
   loadCollectionRules,
   loadCollections,
   navigateToCollection,
   populateIconGrid,
-  removeBook,
-  removebooksToAdd,
-  searchBooksForCollections,
   selectColor,
   selectIcon,
-  showAddBooksModal,
-  showAllIcons,
   setupHTMXAuth,
   testRule,
-  toggleBookForRemoval,
-  toggleBookSelection,
-  updateSelectedCount,
 };
 
 Alpine.data("collections", () => ({
-  addbooksToAdd,
-  backToCollections,
   closeCollectionModal,
   createRule,
   deleteRule,
-  filterCollectionBooks,
   filterIcons,
-  hideAddBooksModal,
-  initCollectionDetail,
   initColorSelection,
-  initIconSelection,
   loadCollectionRules,
   loadCollections,
   navigateToCollection,
   populateIconGrid,
-  removeBook,
-  removebooksToAdd,
-  searchBooksForCollections,
   selectColor,
   selectIcon,
-  showAddBooksModal,
-  showAllIcons,
   testRule,
-  toggleBookForRemoval,
-  toggleBookSelection,
-  updateSelectedCount,
 }));

web/src/docs.ts

@@ -89,10 +89,6 @@ function performDocsSearch(query: string): void {
   }
 }
 
-document.addEventListener("DOMContentLoaded", () => {
-  initializeDocsSearch();
-});
-
 Alpine.data("docs", () => ({
   toggleSidebar,
   initializeSearch: initializeDocsSearch,