refactor(library): fix SSR bug by removing data fetch from init function

CRITICAL FIX: initializeLibraryAdmin() was calling reloadLibraries()
which fetched data from the API and replaced the SSR-rendered library
list on page load, defeating the purpose of server-side rendering.

Changes in web/src/library.ts:
- Remove DOMContentLoaded listener (now uses Alpine x-init in template)
- Remove void reloadLibraries() call from initializeLibraryAdmin()
- Add comment explaining SSR provides initial data
- Add initializeLibraryAdmin to export statement
- Add initializeLibraryAdmin to Alpine.data() registration
- Keep reloadLibraries() as standalone function for use after CRUD ops

Rationale:
- SSR provides fast initial page load with library list
- x-init should ONLY setup event listeners, not fetch data
- reloadLibraries() is called after create/delete/update operations
- Follows SSR-first architecture: different pages have different
  SSR/JS ratios (analytics is 80% JS, most pages are 80% SSR)

Documentation:
- Update COLLECTIONS_CLEANUP_GUIDE.md with SSR-first strategy
- Document page-by-page review status (dashboard ✓, collections 🔄)
- Fix template references (library.templ → admin_library.templ)
- Explain why analytics fetches data (intentional for dynamic page)

This ensures the admin library page maintains SSR benefits while
still providing interactive features via Alpine.js.

web/src/library.ts

@@ -650,50 +650,45 @@ function initializeLibraryAdmin(): void {
     createLibraryForm.addEventListener("submit", handleCreateLibrarySubmit);
   }
 
-  // Load libraries from API on page load
-  void reloadLibraries();
-}
-
-// Initialize on DOM ready
-if (document.readyState === "loading") {
-  document.addEventListener("DOMContentLoaded", initializeLibraryAdmin);
-} else {
-  initializeLibraryAdmin();
+  // SSR provides initial library list - no need to fetch on page load
+  // reloadLibraries() is called after create/delete/update operations
 }
 
 // Export functions for global access
 export {
-  deleteLibrary,
-  showLibraryFolders,
   addLibraryFolder,
-  removeLibraryFolder,
-  setLibraryVisibility,
-  loadUserVisibility,
+  confirmDeleteLibrary,
+  deleteLibrary,
   editLibrary,
   handleCreateLibrarySubmit,
-  showFolderBrowser,
-  navigateFolderBrowser,
-  selectBrowseFolder,
-  hideFolderBrowser,
-  showDeleteModal,
   hideDeleteModal,
-  confirmDeleteLibrary,
+  hideFolderBrowser,
+  initializeLibraryAdmin,
+  loadUserVisibility,
+  navigateFolderBrowser,
+  removeLibraryFolder,
+  selectBrowseFolder,
+  setLibraryVisibility,
+  showDeleteModal,
+  showFolderBrowser,
+  showLibraryFolders,
 };
 
 Alpine.data("library", () => ({
-  deleteLibrary,
-  showLibraryFolders,
   addLibraryFolder,
-  removeLibraryFolder,
-  setLibraryVisibility,
-  loadUserVisibility,
+  confirmDeleteLibrary,
+  deleteLibrary,
   editLibrary,
   handleCreateLibrarySubmit,
-  showFolderBrowser,
-  navigateFolderBrowser,
-  selectBrowseFolder,
-  hideFolderBrowser,
-  showDeleteModal,
   hideDeleteModal,
-  confirmDeleteLibrary,
+  hideFolderBrowser,
+  initializeLibraryAdmin,
+  loadUserVisibility,
+  navigateFolderBrowser,
+  removeLibraryFolder,
+  selectBrowseFolder,
+  setLibraryVisibility,
+  showDeleteModal,
+  showFolderBrowser,
+  showLibraryFolders,
 }));