refactor(core): 迁移 post-content 到 yggdrasil-core,删除 public/js

逐行 TypeScript 化(逻辑不变),改走 window.__initPostContent 全局入口。
post-content.js 已迁移进 libs/yggdrasil-core/,public/js/ 目录随之删除。

libs/yggdrasil-core/src/index.ts

@@ -1,11 +1,11 @@
+import { initPostContent } from './post-content';
+
 declare global {
   interface Window {
     __initPostContent: (selector: string) => void;
   }
 }
 
-window.__initPostContent = (_selector: string): void => {
-  // Task 2 实现
-};
+window.__initPostContent = initPostContent;
 
 export {};

libs/yggdrasil-core/src/post-content.test.ts

@@ -0,0 +1,73 @@
+/**
+ * post-content 测试:钉住代码块 copy 按钮的生成与复制行为。
+ * 黑盒驱动:只通过 window.__initPostContent 入口。
+ */
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import './index';
+
+describe('initPostContent', () => {
+  beforeEach(() => {
+    document.body.innerHTML = '';
+    vi.restoreAllMocks();
+    vi.useFakeTimers();
+  });
+  afterEach(() => {
+    vi.useRealTimers();
+    document.body.innerHTML = '';
+  });
+
+  it('为 pre>code 注入 .copy-code 按钮', () => {
+    const root = document.createElement('div');
+    root.className = 'post-content';
+    root.innerHTML = '<pre><code>console.log(1)</code></pre>';
+    document.body.appendChild(root);
+
+    window.__initPostContent('.post-content');
+
+    const btn = root.querySelector('pre .copy-code');
+    expect(btn).not.toBeNull();
+    expect(btn?.textContent).toBe('copy');
+  });
+
+  it('已有 .copy-code 的 pre 不重复注入', () => {
+    const root = document.createElement('div');
+    root.className = 'post-content';
+    root.innerHTML =
+      '<pre><code>x</code><button class="copy-code">copy</button></pre>';
+    document.body.appendChild(root);
+
+    window.__initPostContent('.post-content');
+
+    const btns = root.querySelectorAll('pre .copy-code');
+    expect(btns.length).toBe(1);
+  });
+
+  it('点击按钮调用 clipboard.writeText 并回显 copied!', () => {
+    const writeText = vi.fn().mockResolvedValue(undefined);
+    Object.defineProperty(navigator, 'clipboard', {
+      value: { writeText },
+      configurable: true,
+    });
+
+    const root = document.createElement('div');
+    root.className = 'post-content';
+    root.innerHTML = '<pre><code>hello</code></pre>';
+    document.body.appendChild(root);
+
+    window.__initPostContent('.post-content');
+
+    const btn = root.querySelector('.copy-code') as HTMLButtonElement;
+    btn.click();
+
+    expect(writeText).toHaveBeenCalledWith('hello');
+    expect(btn.textContent).toBe('copied!');
+
+    // 2 秒后还原回 'copy'
+    vi.advanceTimersByTime(2000);
+    expect(btn.textContent).toBe('copy');
+  });
+
+  it('selector 未命中时不报错', () => {
+    expect(() => window.__initPostContent('.not-exist')).not.toThrow();
+  });
+});

libs/yggdrasil-core/src/post-content.ts

@@ -0,0 +1,48 @@
+/**
+ * 代码块 copy 按钮。
+ *
+ * 为 pre>code 注入一个 .copy-code 按钮,点击复制代码文本并回显 copied!。
+ * 2 秒后还原文案。样式见 input.css 的 .copy-code 规则(全局 Tailwind 构建)。
+ */
+
+function initCopyButtons(root: Element): void {
+  const blocks = root.querySelectorAll('pre > code');
+  blocks.forEach((code) => {
+    const pre = code.parentElement;
+    if (!pre) return;
+    if (pre.querySelector('.copy-code')) return;
+
+    const btn = document.createElement('button');
+    btn.className = 'copy-code';
+    btn.textContent = 'copy';
+    btn.setAttribute('aria-label', 'Copy code');
+
+    const codeText = code.textContent || '';
+    btn.addEventListener('click', () => {
+      if (navigator.clipboard && navigator.clipboard.writeText) {
+        navigator.clipboard.writeText(codeText);
+      } else {
+        const ta = document.createElement('textarea');
+        ta.value = codeText;
+        ta.style.position = 'fixed';
+        ta.style.opacity = '0';
+        document.body.appendChild(ta);
+        ta.select();
+        document.execCommand('copy');
+        document.body.removeChild(ta);
+      }
+      btn.textContent = 'copied!';
+      setTimeout(() => {
+        btn.textContent = 'copy';
+      }, 2000);
+    });
+
+    pre.appendChild(btn);
+  });
+}
+
+export function initPostContent(selector: string): void {
+  const root = document.querySelector(selector);
+  if (!root) return;
+  initCopyButtons(root);
+}

public/js/post-content.js

@@ -1,48 +0,0 @@
-(function () {
-  "use strict";
-
-  function initCopyButtons(root) {
-    var blocks = root.querySelectorAll("pre > code");
-    for (var i = 0; i < blocks.length; i++) {
-      var code = blocks[i];
-      var pre = code.parentElement;
-      if (!pre) continue;
-      if (pre.querySelector(".copy-code")) continue;
-
-      var btn = document.createElement("button");
-      btn.className = "copy-code";
-      btn.textContent = "copy";
-      btn.setAttribute("aria-label", "Copy code");
-
-      (function (codeText) {
-        btn.addEventListener("click", function () {
-          var self = this;
-          if (navigator.clipboard && navigator.clipboard.writeText) {
-            navigator.clipboard.writeText(codeText);
-          } else {
-            var ta = document.createElement("textarea");
-            ta.value = codeText;
-            ta.style.position = "fixed";
-            ta.style.opacity = "0";
-            document.body.appendChild(ta);
-            ta.select();
-            document.execCommand("copy");
-            document.body.removeChild(ta);
-          }
-          self.textContent = "copied!";
-          setTimeout(function () {
-            self.textContent = "copy";
-          }, 2000);
-        });
-      })(code.textContent || "");
-
-      pre.appendChild(btn);
-    }
-  }
-
-  window.__initPostContent = function (selector) {
-    var root = document.querySelector(selector);
-    if (!root) return;
-    initCopyButtons(root);
-  };
-})();

src/components/post/post_content.rs

@@ -10,14 +10,14 @@ use dioxus::prelude::*;
 /// - `content_html`：服务端渲染的文章 HTML 字符串
 ///
 /// 关键行为：
-/// - 在 `target_arch = "wasm32"` 环境下执行 `post-content.js`（代码块复制）。
+/// - 在 `target_arch = "wasm32"` 环境下调用 `window.__initPostContent` 初始化代码块
+///   复制按钮（`yggdrasil-core.js` 已由 `Dioxus.toml` 全局注入）。
 ///   灯箱（图片灯箱 + 懒加载）改由 `Dioxus.toml` 全局注入 `lightbox.js`，
 ///   这里仅设置其初始化配置 `__lightboxSelectors` 并兜底调用。
 #[component]
 pub fn PostContent(content_html: String) -> Element {
     #[cfg(target_arch = "wasm32")]
     use_effect(move || {
-        let _ = js_sys::eval(include_str!("../../../public/js/post-content.js"));
         let _ = js_sys::eval("window.__initPostContent('.post-content')");
         // lightbox 改由 Dioxus.toml 全局 <script src> 加载（不再 include_str!）。
         // 双保险契约：先设配置，若 lightbox.js 已加载则立即调用；