♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

✅ 11 pages built successfully
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/astro/dist/runtime/server/render/dom.js

@@ -1,26 +0,0 @@
-import { markHTMLString } from "../escape.js";
-import { renderSlotToString } from "./slot.js";
-import { toAttributeString } from "./util.js";
-function componentIsHTMLElement(Component) {
-  return typeof HTMLElement !== "undefined" && HTMLElement.isPrototypeOf(Component);
-}
-async function renderHTMLElement(result, constructor, props, slots) {
-  const name = getHTMLElementName(constructor);
-  let attrHTML = "";
-  for (const attr in props) {
-    attrHTML += ` ${attr}="${toAttributeString(await props[attr])}"`;
-  }
-  return markHTMLString(
-    `<${name}${attrHTML}>${await renderSlotToString(result, slots?.default)}</${name}>`
-  );
-}
-function getHTMLElementName(constructor) {
-  const definedName = customElements.getName(constructor);
-  if (definedName) return definedName;
-  const assignedName = constructor.name.replace(/^HTML|Element$/g, "").replace(/[A-Z]/g, "-$&").toLowerCase().replace(/^-/, "html-");
-  return assignedName;
-}
-export {
-  componentIsHTMLElement,
-  renderHTMLElement
-};