release: v0.1.4 — parser enhancement, new syntax, performance optimization

feat(parser): comprehensive Markdown parser enhancement
- Add nested list support (multi-level unordered/ordered, mixed nesting)
- Add Setext headings (=== / ---)
- Add indented code blocks (4-space indent)
- Add HTML comment passthrough (<!-- -->)
- Add entity reference protection (&amp; &#169;)
- Add ordered list start attribute
- Add link title single-quote support
- Add LaTeX math formulas ($inline$ / $$block$$)
- Add footnote support ([^1] ref + [^1]: definition)
- Add definition lists (term\n: definition)
- Extend emoji map from 85 to 150+ common emojis
- Fix backtick code block matching (CommonMark spec)
- Fix italic regex character truncation (lookbehind assertions)
- Fix superscript/subscript/strikethrough ambiguity
- Fix blockquote prefix handling (>text without space)
- Enhance safeUrl filtering (additional protocol checks)
- Enhance slugify (Unicode NFKC normalization)

perf(parser): single-pass inline scanning, render cache, pre-compiled regex
- Replace 14-step chained regex with unified single-pass scanInline()
- Add cachedRenderInline() with FIFO LRU eviction (300-entry cap)
- Pre-compile 15+ static regex constants for block boundary detection
- Skip redundant style='text-align:left' on default-aligned table cells

style(parser): add CSS for footnotes, definition lists, math formulas, sup/sub

test(parser): 44 new test cases covering all v0.1.4 syntax additions (469 total)

chore: bump version 0.1.3 → 0.1.4 across all source files, docs, site pages

site/demo.html

@@ -313,9 +313,34 @@
       '',
       '| 名称 | 值 |',
       '| --- | --- |',
-      '| 版本 | 0.1.3 |',
+      '| 版本 | 0.1.4 |',
       '| 依赖 | 零 |',
-      '| 测试 | 390+ |',
+      '| 测试 | 469+ |',
+      '',
+      '## 新增语法',
+      '',
+      '### 数学公式',
+      '',
+      '- 行内：$E=mc^2$',
+      '- 块级：$$\\int_0^\\infty e^{-x}dx$$',
+      '',
+      '### 嵌套列表',
+      '',
+      '- 一级',
+      '  - 二级',
+      '    - 三级',
+      '',
+      '### 脚注',
+      '',
+      '这是带脚注的文字[^1]',
+      '',
+      '[^1]: 这是脚注内容',
+      '',
+      '### 定义列表',
+      '',
+      'Markdown',
+      ': 一种轻量级标记语言。',
+      ': 由 John Gruber 创建。',
       '',
       '## 任务列表',
       '',

site/docs.html

@@ -175,7 +175,7 @@
 
 <header class="docs-header">
   <h1><span class="grad">文档</span></h1>
-  <p class="sub">MetonaEditor v0.1.3 完整 API、配置与使用指南</p>
+  <p class="sub">MetonaEditor v0.1.4 完整 API、配置与使用指南</p>
 </header>
 
 <div class="container">
@@ -598,7 +598,7 @@ i18nUtils<span class="c-punc">.</span><span class="c-fn">formatDate</span><span
 
 <footer>
   <div class="container">
-    MetonaEditor v0.1.3 · <a href="https://git.metona.cn/MetonaTeam/MetonaEditor" target="_blank" rel="noopener">源码仓库</a> · MIT License
+    MetonaEditor v0.1.4 · <a href="https://git.metona.cn/MetonaTeam/MetonaEditor" target="_blank" rel="noopener">源码仓库</a> · MIT License
   </div>
 </footer>
 

site/index.html

@@ -467,8 +467,8 @@
         <div class="feature-icon">
           <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="16 18 22 12 16 6"/><polyline points="8 6 2 12 8 18"/></svg>
         </div>
-        <h3>内置轻量解析器</h3>
-        <p>自研 CommonMark 子集 + GFM 扩展解析器，覆盖标题、表格、任务列表、代码块等常用语法，也可整体替换。</p>
+        <h3>内置增强解析器</h3>
+        <p>自研 CommonMark + GFM 扩展解析器，覆盖数学公式、脚注、嵌套列表、定义列表、表格对齐、任务列表等丰富语法，也可整体替换。</p>
       </div>
       <div class="feature">
         <div class="feature-icon">