update the favicon without java script

assets/javascripts/dynamic_favicon.js

@@ -1,140 +0,0 @@
-(function() {
-  'use strict';
-
-  console.log('[Redmine QBO Calendar] dynamic_favicon.js loaded (Simplified Canvas PNG)');
-
-  const FAVICON_ID = 'redmine-qbo-calendar-favicon';
-
-  function generatePngFaviconUrl(day, callback) {
-    const svg = `
-      <svg xmlns="http://www.w3.org/2000/svg"
-           width="64" height="64" viewBox="0 0 64 64">
-
-        <rect
-          x="3"
-          y="4"
-          width="58"
-          height="57"
-          rx="7"
-          fill="#ffffff"
-          stroke="#888888"
-          stroke-width="2"/>
-
-        <rect
-          x="3"
-          y="4"
-          width="58"
-          height="18"
-          rx="7"
-          fill="#d92626"/>
-
-        <rect
-          x="3"
-          y="15"
-          width="58"
-          height="7"
-          fill="#d92626"/>
-
-        <rect
-          x="14"
-          y="1"
-          width="6"
-          height="12"
-          rx="3"
-          fill="#555555"/>
-
-        <rect
-          x="44"
-          y="1"
-          width="6"
-          height="12"
-          rx="3"
-          fill="#555555"/>
-
-        <text
-          x="32"
-          y="17"
-          text-anchor="middle"
-          font-family="Arial, sans-serif"
-          font-size="8"
-          font-weight="bold"
-          fill="#ffffff">
-          OSOR
-        </text>
-
-        <text
-          x="32"
-          y="50"
-          text-anchor="middle"
-          font-family="Arial, sans-serif"
-          font-size="36"
-          font-weight="bold"
-          fill="#222222">
-          ${day}
-        </text>
-
-      </svg>
-    `;
-
-    const cleanSvg = svg.replace(/\n/g, '').replace(/\s+/g, ' ').trim();
-    const svgDataUrl = 'data:image/svg+xml;base64,' + btoa(unescape(encodeURIComponent(cleanSvg)));
-
-    const canvas = document.createElement('canvas');
-    canvas.width = 64;
-    canvas.height = 64;
-    const ctx = canvas.getContext('2d');
-
-    const img = new Image();
-    
-    img.onload = function() {
-      ctx.drawImage(img, 0, 0, 64, 64);
-      const pngDataUrl = canvas.toDataURL('image/png');
-      callback(pngDataUrl);
-    };
-    
-    img.src = svgDataUrl;
-  }
-
-  function setFavicon() {
-    const day = new Date().getDate();
-
-    generatePngFaviconUrl(day, function(newFaviconUrl) {
-      const existingIcons = document.querySelectorAll('link[rel*="icon"]');
-
-      if (existingIcons.length > 0) {
-        existingIcons.forEach(function(icon) {
-          icon.type = 'image/png';
-          icon.rel = 'icon'; 
-          icon.href = newFaviconUrl;
-        });
-      } else {
-        const favicon = document.createElement('link');
-        favicon.id = FAVICON_ID;
-        favicon.rel = 'icon';
-        favicon.type = 'image/png';
-        favicon.href = newFaviconUrl;
-        document.head.appendChild(favicon);
-      }
-
-      console.log(
-        '[OSOR Calendar] favicon updated (Simplified PNG)',
-        { day: day }
-      );
-    });
-  }
-
-  function initialize() {
-    console.log('[OSOR Calendar] initializing favicon');
-    setTimeout(setFavicon, 150);
-  }
-
-  if (document.readyState === 'loading') {
-    document.addEventListener(
-      'DOMContentLoaded',
-      initialize
-    );
-  } else {
-    initialize();
-  }
-
-})();