feat: 添加完整的数学渲染库本地镜像

- 下载 MathJax 3 完整版本 (tex-chtml-full.js)
- 下载 MathJax 2 完整版本 (v2.7.9)
- 下载 KaTeX 完整版本 (v0.16.9)
- 包含 katex.min.js, katex.min.css, auto-render.min.js
- 替换之前的简化备用版本
- 提供完整的数学公式渲染功能

assets/vendor/external/katex/auto-render.min.js

@@ -1,54 +1 @@
-/* KaTeX Auto-Render - Local Fallback */
-(function() {
-    'use strict';
-    
-    console.warn('KaTeX Auto-Render 本地备用版本 - 功能受限');
-    
-    window.renderMathInElement = function(element, options) {
-        console.warn('KaTeX 自动渲染功能不可用 - 使用备用版本');
-        
-        options = options || {};
-        var delimiters = options.delimiters || [
-            {left: "$$", right: "$$", display: true},
-            {left: "$", right: "$", display: false},
-            {left: "\\(", right: "\\)", display: false},
-            {left: "\\[", right: "\\]", display: true}
-        ];
-        
-        if (!element) {
-            element = document.body;
-        }
-        
-        // 简单的文本替换处理
-        var walker = document.createTreeWalker(
-            element,
-            NodeFilter.SHOW_TEXT,
-            null,
-            false
-        );
-        
-        var textNodes = [];
-        var node;
-        while (node = walker.nextNode()) {
-            textNodes.push(node);
-        }
-        
-        textNodes.forEach(function(textNode) {
-            var text = textNode.textContent;
-            var hasMatch = false;
-            
-            delimiters.forEach(function(delimiter) {
-                if (text.includes(delimiter.left) && text.includes(delimiter.right)) {
-                    hasMatch = true;
-                }
-            });
-            
-            if (hasMatch) {
-                var span = document.createElement('span');
-                span.innerHTML = text.replace(/\$([^$]+)\$/g, 
-                    '<span class="katex" style="font-style: italic; color: #666;" title="数学公式渲染服务不可用">$1</span>');
-                textNode.parentNode.replaceChild(span, textNode);
-            }
-        });
-    };
-})();
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t(require("katex")):"function"==typeof define&&define.amd?define(["katex"],t):"object"==typeof exports?exports.renderMathInElement=t(require("katex")):e.renderMathInElement=t(e.katex)}("undefined"!=typeof self?self:this,(function(e){return function(){"use strict";var t={771:function(t){t.exports=e}},r={};function n(e){var i=r[e];if(void 0!==i)return i.exports;var a=r[e]={exports:{}};return t[e](a,a.exports,n),a.exports}n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,{a:t}),t},n.d=function(e,t){for(var r in t)n.o(t,r)&&!n.o(e,r)&&Object.defineProperty(e,r,{enumerable:!0,get:t[r]})},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)};var i={};return function(){n.d(i,{default:function(){return s}});var e=n(771),t=n.n(e),r=function(e,t,r){for(var n=r,i=0,a=e.length;n<t.length;){var o=t[n];if(i<=0&&t.slice(n,n+a)===e)return n;"\\"===o?n++:"{"===o?i++:"}"===o&&i--,n++}return-1},a=/^\\begin{/,o=function(e,t){for(var n,i=[],o=new RegExp("("+t.map((function(e){return e.left.replace(/[-/\\^$*+?.()|[\]{}]/g,"\\$&")})).join("|")+")");-1!==(n=e.search(o));){n>0&&(i.push({type:"text",data:e.slice(0,n)}),e=e.slice(n));var l=t.findIndex((function(t){return e.startsWith(t.left)}));if(-1===(n=r(t[l].right,e,t[l].left.length)))break;var d=e.slice(0,n+t[l].right.length),s=a.test(d)?d:e.slice(t[l].left.length,n);i.push({type:"math",data:s,rawData:d,display:t[l].display}),e=e.slice(n+t[l].right.length)}return""!==e&&i.push({type:"text",data:e}),i},l=function(e,r){var n=o(e,r.delimiters);if(1===n.length&&"text"===n[0].type)return null;for(var i=document.createDocumentFragment(),a=0;a<n.length;a++)if("text"===n[a].type)i.appendChild(document.createTextNode(n[a].data));else{var l=document.createElement("span"),d=n[a].data;r.displayMode=n[a].display;try{r.preProcess&&(d=r.preProcess(d)),t().render(d,l,r)}catch(e){if(!(e instanceof t().ParseError))throw e;r.errorCallback("KaTeX auto-render: Failed to parse `"+n[a].data+"` with ",e),i.appendChild(document.createTextNode(n[a].rawData));continue}i.appendChild(l)}return i},d=function e(t,r){for(var n=0;n<t.childNodes.length;n++){var i=t.childNodes[n];if(3===i.nodeType){for(var a=i.textContent,o=i.nextSibling,d=0;o&&o.nodeType===Node.TEXT_NODE;)a+=o.textContent,o=o.nextSibling,d++;var s=l(a,r);if(s){for(var f=0;f<d;f++)i.nextSibling.remove();n+=s.childNodes.length-1,t.replaceChild(s,i)}else n+=d}else 1===i.nodeType&&function(){var t=" "+i.className+" ";-1===r.ignoredTags.indexOf(i.nodeName.toLowerCase())&&r.ignoredClasses.every((function(e){return-1===t.indexOf(" "+e+" ")}))&&e(i,r)}()}},s=function(e,t){if(!e)throw new Error("No element provided to render");var r={};for(var n in t)t.hasOwnProperty(n)&&(r[n]=t[n]);r.delimiters=r.delimiters||[{left:"$$",right:"$$",display:!0},{left:"\\(",right:"\\)",display:!1},{left:"\\begin{equation}",right:"\\end{equation}",display:!0},{left:"\\begin{align}",right:"\\end{align}",display:!0},{left:"\\begin{alignat}",right:"\\end{alignat}",display:!0},{left:"\\begin{gather}",right:"\\end{gather}",display:!0},{left:"\\begin{CD}",right:"\\end{CD}",display:!0},{left:"\\[",right:"\\]",display:!0}],r.ignoredTags=r.ignoredTags||["script","noscript","style","textarea","pre","code","option"],r.ignoredClasses=r.ignoredClasses||[],r.errorCallback=r.errorCallback||console.error,r.macros=r.macros||{},d(e,r)}}(),i=i.default}()}));