♻️ 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

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✅ 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/scripts.js

@@ -1,37 +0,0 @@
-import islandScript from "./astro-island.prebuilt.js";
-import islandScriptDev from "./astro-island.prebuilt-dev.js";
-import { ISLAND_STYLES } from "./astro-island-styles.js";
-function determineIfNeedsHydrationScript(result) {
-  if (result._metadata.hasHydrationScript) {
-    return false;
-  }
-  return result._metadata.hasHydrationScript = true;
-}
-function determinesIfNeedsDirectiveScript(result, directive) {
-  if (result._metadata.hasDirectives.has(directive)) {
-    return false;
-  }
-  result._metadata.hasDirectives.add(directive);
-  return true;
-}
-function getDirectiveScriptText(result, directive) {
-  const clientDirectives = result.clientDirectives;
-  const clientDirective = clientDirectives.get(directive);
-  if (!clientDirective) {
-    throw new Error(`Unknown directive: ${directive}`);
-  }
-  return clientDirective;
-}
-function getPrescripts(result, type, directive) {
-  switch (type) {
-    case "both":
-      return `<style>${ISLAND_STYLES}</style><script>${getDirectiveScriptText(result, directive)}</script><script>${process.env.NODE_ENV === "development" ? islandScriptDev : islandScript}</script>`;
-    case "directive":
-      return `<script>${getDirectiveScriptText(result, directive)}</script>`;
-  }
-}
-export {
-  determineIfNeedsHydrationScript,
-  determinesIfNeedsDirectiveScript,
-  getPrescripts
-};