feat: Add VitePress docs, EPUB to PDF tool, Phosphor icons, and licensing updates

- Set up VitePress documentation site (docs:dev, docs:build, docs:preview)
- Added Getting Started, Tools Reference, Contributing, and Commercial License pages
- Created self-hosting guides for Docker, Vercel, Netlify, Cloudflare, AWS, Hostinger, Nginx, Apache
- Updated README with documentation link, sponsors section, and docs contribution guide

- Added EPUB to PDF converter using LibreOffice WASM

- Migrated to Phosphor Icons for consistent iconography

- Added donation ribbon banner on landing page
- Removed 'Like My Work?' section (replaced by ribbon)
- Updated licensing.html with delivery model, AGPL notice, invoicing, and no-refund policy

- Added Commercial License documentation page
- Updated translations table (Chinese added, marked non-English as In Progress)

- Added sponsors.yml workflow for auto-generating sponsor avatars

src/js/logic/pdf-to-csv-page.ts

@@ -0,0 +1,171 @@
+import { showLoader, hideLoader, showAlert } from '../ui.js';
+import { downloadFile, formatBytes } from '../utils/helpers.js';
+import { createIcons, icons } from 'lucide';
+import JSZip from 'jszip';
+import { PyMuPDF } from '@bentopdf/pymupdf-wasm';
+
+const pymupdf = new PyMuPDF(import.meta.env.BASE_URL + 'pymupdf-wasm/');
+let file: File | null = null;
+
+const updateUI = () => {
+    const fileDisplayArea = document.getElementById('file-display-area');
+    const optionsPanel = document.getElementById('options-panel');
+
+    if (!fileDisplayArea || !optionsPanel) return;
+
+    fileDisplayArea.innerHTML = '';
+
+    if (file) {
+        optionsPanel.classList.remove('hidden');
+
+        const fileDiv = document.createElement('div');
+        fileDiv.className = 'flex items-center justify-between bg-gray-700 p-3 rounded-lg text-sm';
+
+        const infoContainer = document.createElement('div');
+        infoContainer.className = 'flex flex-col overflow-hidden';
+
+        const nameSpan = document.createElement('div');
+        nameSpan.className = 'truncate font-medium text-gray-200 text-sm mb-1';
+        nameSpan.textContent = file.name;
+
+        const metaSpan = document.createElement('div');
+        metaSpan.className = 'text-xs text-gray-400';
+        metaSpan.textContent = formatBytes(file.size);
+
+        infoContainer.append(nameSpan, metaSpan);
+
+        const removeBtn = document.createElement('button');
+        removeBtn.className = 'ml-4 text-red-400 hover:text-red-300 flex-shrink-0';
+        removeBtn.innerHTML = '<i data-lucide="trash-2" class="w-4 h-4"></i>';
+        removeBtn.onclick = resetState;
+
+        fileDiv.append(infoContainer, removeBtn);
+        fileDisplayArea.appendChild(fileDiv);
+
+        createIcons({ icons });
+    } else {
+        optionsPanel.classList.add('hidden');
+    }
+};
+
+const resetState = () => {
+    file = null;
+    const fileInput = document.getElementById('file-input') as HTMLInputElement;
+    if (fileInput) fileInput.value = '';
+    updateUI();
+};
+
+function tableToCsv(rows: (string | null)[][]): string {
+    return rows.map(row =>
+        row.map(cell => {
+            const cellStr = cell ?? '';
+            if (cellStr.includes(',') || cellStr.includes('"') || cellStr.includes('\n')) {
+                return `"${cellStr.replace(/"/g, '""')}"`;
+            }
+            return cellStr;
+        }).join(',')
+    ).join('\n');
+}
+
+async function convert() {
+    if (!file) {
+        showAlert('No File', 'Please upload a PDF file first.');
+        return;
+    }
+
+    showLoader('Loading Engine...');
+
+    try {
+        await pymupdf.load();
+        showLoader('Extracting tables...');
+
+        const doc = await pymupdf.open(file);
+        const pageCount = doc.pageCount;
+        const baseName = file.name.replace(/\.[^/.]+$/, '');
+
+        const allRows: (string | null)[][] = [];
+
+        for (let i = 0; i < pageCount; i++) {
+            showLoader(`Scanning page ${i + 1} of ${pageCount}...`);
+            const page = doc.getPage(i);
+            const tables = page.findTables();
+
+            tables.forEach((table) => {
+                allRows.push(...table.rows);
+                allRows.push([]);
+            });
+        }
+
+        if (allRows.length === 0) {
+            showAlert('No Tables Found', 'No tables were detected in this PDF.');
+            return;
+        }
+
+        const csvContent = tableToCsv(allRows.filter(row => row.length > 0));
+        const blob = new Blob([csvContent], { type: 'text/csv;charset=utf-8;' });
+        downloadFile(blob, `${baseName}.csv`);
+        showAlert('Success', 'PDF converted to CSV successfully!', 'success', resetState);
+    } catch (e) {
+        console.error(e);
+        const message = e instanceof Error ? e.message : 'Unknown error';
+        showAlert('Error', `Failed to convert PDF to CSV. ${message}`);
+    } finally {
+        hideLoader();
+    }
+}
+
+document.addEventListener('DOMContentLoaded', () => {
+    const fileInput = document.getElementById('file-input') as HTMLInputElement;
+    const dropZone = document.getElementById('drop-zone');
+    const processBtn = document.getElementById('process-btn');
+    const backBtn = document.getElementById('back-to-tools');
+
+    if (backBtn) {
+        backBtn.addEventListener('click', () => {
+            window.location.href = import.meta.env.BASE_URL;
+        });
+    }
+
+    const handleFileSelect = (newFiles: FileList | null) => {
+        if (!newFiles || newFiles.length === 0) return;
+        const validFile = Array.from(newFiles).find(f => f.type === 'application/pdf');
+
+        if (!validFile) {
+            showAlert('Invalid File', 'Please upload a PDF file.');
+            return;
+        }
+
+        file = validFile;
+        updateUI();
+    };
+
+    if (fileInput && dropZone) {
+        fileInput.addEventListener('change', (e) => {
+            handleFileSelect((e.target as HTMLInputElement).files);
+        });
+
+        dropZone.addEventListener('dragover', (e) => {
+            e.preventDefault();
+            dropZone.classList.add('bg-gray-700');
+        });
+
+        dropZone.addEventListener('dragleave', (e) => {
+            e.preventDefault();
+            dropZone.classList.remove('bg-gray-700');
+        });
+
+        dropZone.addEventListener('drop', (e) => {
+            e.preventDefault();
+            dropZone.classList.remove('bg-gray-700');
+            handleFileSelect(e.dataTransfer?.files ?? null);
+        });
+
+        fileInput.addEventListener('click', () => {
+            fileInput.value = '';
+        });
+    }
+
+    if (processBtn) {
+        processBtn.addEventListener('click', convert);
+    }
+});