✨ feat: add github repository card extension feature

- remove astro-compress to improve build speed
- add target and rel attributes to footer links
- rename unocss opacity utility from 'opacity' to 'op'
- update PostList component's page logic from 'isTag' to 'isHome'
- create extend.css file for markdown extended features
- reorganize and sort styles in heti.css
- fix inline code wrapping issue

package.json

@@ -19,7 +19,6 @@
     "@astrojs/sitemap": "^3.3.1",
     "@waline/client": "^3.5.6",
     "astro": "^5.7.10",
-    "astro-compress": "^2.3.8",
     "astro-og-canvas": "^0.7.0",
     "astro-robots-txt": "^1.0.0",
     "canvaskit-wasm": "^0.40.0",