Add PDF export functionality and favicon support

- Introduced a new script for exporting the dashboard as a PDF using html2canvas and jsPDF.
- Added a favicon.ico file and linked it in the base template.
- Updated the base template to include the new PDF export script and modified the button for PDF export functionality.
- Enhanced the index template to include an ID for the dashboard content for PDF generation.

static/js/export-pdf.js

@@ -0,0 +1,111 @@
+/**
+ * Export dashboard as PDF by capturing a screenshot of #dashboard-content
+ * and assembling it into a multi-page PDF (html2canvas + jsPDF).
+ */
+function exportDashboardToPdf() {
+  var el = document.getElementById('dashboard-content');
+  if (!el) {
+    if (typeof console !== 'undefined' && console.warn) {
+      console.warn('export-pdf: #dashboard-content not found');
+    }
+    return;
+  }
+
+  var btn = document.getElementById('pdf-export-btn');
+  var originalText = btn ? btn.innerHTML : '';
+  if (btn) {
+    btn.disabled = true;
+    btn.innerHTML = 'Generating PDF…';
+  }
+
+  var regionEl = document.getElementById('regionBadge');
+  var region = regionEl ? (regionEl.textContent || '').trim() : '';
+
+  if (typeof html2canvas === 'undefined' || typeof jspdf === 'undefined') {
+    if (btn) {
+      btn.disabled = false;
+      btn.innerHTML = originalText;
+    }
+    alert('PDF export requires html2canvas and jsPDF. Please refresh the page.');
+    return;
+  }
+
+  var JsPDFConstructor = (typeof jspdf !== 'undefined' && jspdf.jsPDF) ? jspdf.jsPDF : jspdf;
+
+  var auditSection = el.querySelector('section[aria-label="Audit analysis"]');
+  var auditSectionDisplay = '';
+  if (auditSection) {
+    auditSectionDisplay = auditSection.style.display;
+    auditSection.style.display = 'none';
+  }
+
+  function restoreAuditSection() {
+    if (auditSection) {
+      auditSection.style.display = auditSectionDisplay;
+    }
+  }
+
+  html2canvas(el, {
+    scale: 2,
+    useCORS: true,
+    allowTaint: true,
+    logging: false
+  }).then(function(canvas) {
+    var imgW = canvas.width;
+    var imgH = canvas.height;
+    var dataUrl = canvas.toDataURL('image/png');
+
+    var doc = new JsPDFConstructor({ orientation: 'portrait', unit: 'mm', format: 'a4' });
+    var pageW = 210;
+    var pageH = 297;
+    var margin = 10;
+    var contentW = pageW - 2 * margin;
+    var headerH = 14;
+    var firstPageImgTop = margin + headerH;
+    var firstPageImgH = pageH - firstPageImgTop - margin;
+    var otherPageImgH = pageH - 2 * margin;
+
+    var imgWmm = contentW;
+    var imgHmm = contentW * (imgH / imgW);
+
+    doc.setFontSize(14);
+    doc.text('Dashboard report', margin, margin + 6);
+    doc.setFontSize(10);
+    doc.text(region ? 'Region: ' + region : '', margin, margin + 12);
+
+    var shown = 0;
+    var totalH = imgHmm;
+    var pageNum = 0;
+    var imgYmm = firstPageImgTop;
+
+    while (shown < totalH) {
+      if (pageNum > 0) {
+        doc.addPage();
+        imgYmm = margin;
+      }
+      var sliceH = pageNum === 0 ? firstPageImgH : otherPageImgH;
+      var yOffset = -shown;
+      doc.addImage(dataUrl, 'PNG', margin, imgYmm + yOffset, imgWmm, imgHmm);
+      shown += sliceH;
+      pageNum += 1;
+    }
+
+    doc.save('dashboard-report.pdf');
+
+    restoreAuditSection();
+    if (btn) {
+      btn.disabled = false;
+      btn.innerHTML = originalText;
+    }
+  }).catch(function (err) {
+    if (typeof console !== 'undefined' && console.error) {
+      console.error('export-pdf:', err);
+    }
+    restoreAuditSection();
+    if (btn) {
+      btn.disabled = false;
+      btn.innerHTML = originalText;
+    }
+    alert('Failed to generate PDF. Please try again.');
+  });
+}

templates/base.html

@@ -5,10 +5,13 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>{% block title %}SWatcher{% endblock %}</title>
+    <link rel="icon" href="{% static 'favicon.ico' %}" type="image/x-icon">
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&display=swap" rel="stylesheet">
     <link rel="stylesheet" href="{% static 'css/output.css' %}">
+    <script src="{% static 'js/html2canvas-pro.min.js' %}"></script>
+    <script src="{% static 'js/jspdf.umd.min.js' %}"></script>
     {% block imports %}
     {% endblock %}
     {% block css %}
@@ -22,7 +25,7 @@
         </div>
         <div class="navbar-end">
             <div class="px-1 flex items-center gap-3 pr-10">
-                <button type="button" class="btn btn-ghost btn-sm no-print" onclick="window.print()" title="Save as PDF" aria-label="Save as PDF">
+                <button type="button" id="pdf-export-btn" class="btn btn-ghost btn-sm no-print" onclick="exportDashboardToPdf()" title="Save as PDF" aria-label="Save as PDF">
                     <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true">
                         <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 10v6m0 0l-3-3m3 3l3-3m2 8H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"/>
                     </svg>
@@ -70,6 +73,7 @@
             localStorage.setItem('theme', newTheme);
         });
     </script>
+    <script src="{% static 'js/export-pdf.js' %}"></script>
     {% block script %}
     {% endblock %}
 </body>

templates/index.html

@@ -10,7 +10,7 @@
 
 {% block content %}
 <!-- MAIN DASHBOARD -->
-<div class="p-4 space-y-8" {% if skeleton %}data-dashboard="skeleton"{% endif %}>
+<div id="dashboard-content" class="p-4 space-y-8" {% if skeleton %}data-dashboard="skeleton"{% endif %}>
     <!-- QUICK STATS ROW -->
     <section class="grid grid-cols-1 lg:grid-cols-3 gap-4" aria-label="Quick stats">
         <!-- CPU Utilization -->

watcher_visio/urls.py

@@ -14,10 +14,13 @@ Including another URLconf
     1. Import the include() function: from django.urls import include, path
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
+from django.conf import settings
 from django.contrib import admin
 from django.urls import path, include
+from django.views.generic import RedirectView
 
 urlpatterns = [
     path('admin/', admin.site.urls),
+    path('favicon.ico', RedirectView.as_view(url=settings.STATIC_URL + 'favicon.ico', permanent=False)),
     path('', include('dashboard.urls')),
 ]