Add dashboard redesign, custom section builder, and enhanced search functionality

Features:
- Complete dashboard redesign with improved UI components and layout
- Implement custom section builder for personalized book organization
- Add new events tracking system for user interactions
- Enhance search functionality with better static search.js
- Update TypeScript type definitions for API responses

Backend:
- Update Go dependencies in go.mod
- Add new frontend routes in router

Templates:
- Update admin and dashboard templates with new components

Frontend:
- Refactor analytics, collections, conflicts, and queue modules
- Add new documentation features in docs.ts
- Implement linking between books and collections
- Add toast notifications for user feedback
- Include placeholder book SVG asset

This commit consolidates multiple feature additions and improvements
across the entire stack including backend, templates, and frontend.

web/src/toast.ts

@@ -18,7 +18,7 @@ const createToastContainer = (): HTMLElement => {
 };
 
 // Escape HTML to prevent XSS
-const escapeHtml = (text: string): string => {
+const toastEscapeHtml = (text: string): string => {
     const div = document.createElement('div');
     div.textContent = text;
     return div.innerHTML;
@@ -52,7 +52,7 @@ const createToastElement = (message: string, type: ToastType): HTMLElement => {
     
     toast.innerHTML = `
         <span class="text-xl flex-shrink-0">${config.icon}</span>
-        <span class="flex-1 break-words">${escapeHtml(message)}</span>
+        <span class="flex-1 break-words">${toastEscapeHtml(message)}</span>
         <button class="toast-close bg-transparent border-0 text-white cursor-pointer text-lg p-0 w-5 h-5 flex items-center justify-center opacity-70 hover:opacity-100 flex-shrink-0 transition-opacity">
             ×
         </button>