fix: safeHTML live NodeList issue + expanded common words

Fixed safeHTML in all three files — template.content.childNodes and
doc.body.childNodes are live NodeLists that shrink as nodes are moved.
Using Array.from() to create a static copy before spreading into
replaceChildren().

Expanded proper noun common words filter with ~500 additional verbs,
nouns, and adjectives (generate, design, manage, process, account,
button, dashboard, etc.) to prevent false PPI flags on titles,
headings, and UI button labels.

https://claude.ai/code/session_01SWSwDfMVij53bCTNSCLMwn

src/options/options.js

@@ -17,7 +17,7 @@ const $ = (sel) => document.querySelector(sel);
 // --- Safe innerHTML replacement (AMO-compliant) ---
 function safeHTML(el, html) {
   const doc = new DOMParser().parseFromString(html, 'text/html');
-  el.replaceChildren(...doc.body.childNodes);
+  el.replaceChildren(...Array.from(doc.body.childNodes));
 }
 
 document.addEventListener('DOMContentLoaded', async () => {