Greasy Fork

1. [New] Added a "Copy" button next to feed links with visual feedback for easy subscription.
2. [Imp] Enhanced network probing strategy: Automatically falls back to GET requests if HEAD returns 405, significantly improving detection on static sites (e.g., GitHub Pages).
3. [Fix] Resolved a logic issue where site-specific rules (e.g., GitHub) prevented scanning for other valid feeds on the page.
4. [Priv] Removed all external font (CDN) dependencies in favor of system native fonts to enhance privacy and loading speed.
5. [Core] Optimized HTTP header parsing to handle special characters correctly; updated metadata to @run-at document-idle for better performance.

Fix: 避免了 UI 在 iframe 中生成; 將 Widget 掛載到 document.documentElement（即 標籤下），使其與 同級，避免被網站佈局影響。

Fix: Prevents UI from being generated in an iframe by mounting the Widget to document.documentElement (i.e., under the tag), making it at the same level as , thus avoiding being affected by the website layout.