fix(docs): enable raw HTML in markdown with rehype-raw

- Add rehype-raw plugin to allow HTML elements in markdown
- Remove inline script tag from nodes.md (loaded globally in Head.astro)
- This fixes blueprint graph examples not rendering in production

docs/package.json

@@ -15,6 +15,7 @@
     "@astrojs/vue": "^5.1.3",
     "@tailwindcss/vite": "^4.1.18",
     "astro": "^5.6.1",
+    "rehype-raw": "^7.0.0",
     "sharp": "^0.34.2",
     "tailwindcss": "^4.1.18",
     "vue": "^3.5.26"