fix: enhance diagram copy button functionality and ensure Echarts visibility on home page

assets/js/theme.js

@@ -527,7 +527,10 @@ class FixIt {
     this.util.forEach(document.querySelectorAll('.diagram-copy-btn'), ($btn) => {
       $btn.addEventListener('click', () => {
         stagingDOM.stage($btn.parentElement.querySelector('template').content.cloneNode(true))
-        const code = stagingDOM.contentAsText();
+        let code = stagingDOM.contentAsText();
+        try {
+          code = JSON.stringify(JSON.parse(code), null, 2);
+        } catch {}
         this.util.copyText(code).then(() => {
           $btn.toggleAttribute('data-copied', true);
           setTimeout(() => {

layouts/_markup/render-codeblock-echarts.html

@@ -6,3 +6,6 @@
   | partial "plugin/echarts.html"
 -}}
 {{- .Page.Store.Set "hasEcharts" true -}}
+{{- if eq hugo.Context.MarkupScope "home" -}}
+  {{- site.Home.Store.Set "hasEcharts" true -}}
+{{- end -}}

layouts/_partials/init/index.html

@@ -1,4 +1,4 @@
-{{- hugo.Store.Set "version" "v0.4.0-alpha.2-20251012060036-b4cb5a5a" -}}
+{{- hugo.Store.Set "version" "v0.4.0-alpha.2-20251014072524-fa94e698" -}}
 {{- .Store.Set "this" dict -}}
 
 {{- partial "init/detection-env.html" . -}}