feat(favicon,repair-pdf): Add favicon support and implement PDF repair tool

- Add favicon.ico to public directory for browser tab display
- Update favicon references across all HTML pages with proper link tags for SVG, PNG, and ICO formats
- Add Apple touch icon support for iOS devices
- Create new repair-pdf.ts logic module for PDF repair functionality
- Create new repair-pdf-page.ts utility module for page-level repair operations
- Add repair-pdf.html page with UI for PDF repair tool
- Register repair PDF tool in tools configuration and PDF tools registry
- Update UI rendering utilities to support new repair tool
- Improve favicon handling with multiple format fallbacks for cross-browser compatibility
- Standardize favicon paths to use absolute URLs for consistency
- Clean up whitespace and formatting in licensing.html for code consistency

src/js/utils/render-utils.ts

@@ -9,7 +9,7 @@ export interface RenderConfig {
     batchSize?: number;
     useLazyLoading?: boolean;
     lazyLoadMargin?: string;
-    eagerLoadBatches?: number; // Number of batches to load ahead eagerly (default: 1)
+    eagerLoadBatches?: number; // Number of batches to load ahead eagerly (default: 2)
     onProgress?: (current: number, total: number) => void;
     onPageRendered?: (pageIndex: number, element: HTMLElement) => void;
     onBatchComplete?: () => void;
@@ -214,7 +214,7 @@ export async function renderPagesProgressively(
     const {
         batchSize = 8,  // Increased from 5 to 8 for faster initial render
         useLazyLoading = true,
-        eagerLoadBatches = 1, // Eagerly load 1 batch ahead by default
+        eagerLoadBatches = 2, // Eagerly load 1 batch ahead by default
         onProgress,
         onBatchComplete,
     } = config;
@@ -318,7 +318,7 @@ export function observePlaceholder(
  * Eagerly renders the next batch in the background
  */
 function renderEagerBatch(config: RenderConfig): void {
-    const { eagerLoadBatches = 1, batchSize = 8 } = config;
+    const { eagerLoadBatches = 2, batchSize = 8 } = config;
 
     if (eagerLoadBatches <= 0 || lazyLoadState.eagerLoadQueue.length === 0) {
         return;