♻️ 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/compiler/index.d.ts

@@ -1 +0,0 @@
-export { addAttribute, createAstro, createComponent, createTransitionScope, defineScriptVars, defineStyleVars, Fragment, maybeRenderHead, mergeSlots, render, renderComponent, renderHead, renderScript, renderSlot, renderTransition, spreadAttributes, unescapeHTML, } from '../server/index.js';

dealplustech-astro/node_modules/astro/dist/runtime/compiler/index.js

@@ -1,38 +0,0 @@
-import {
-  addAttribute,
-  createAstro,
-  createComponent,
-  createTransitionScope,
-  defineScriptVars,
-  defineStyleVars,
-  Fragment,
-  maybeRenderHead,
-  mergeSlots,
-  render,
-  renderComponent,
-  renderHead,
-  renderScript,
-  renderSlot,
-  renderTransition,
-  spreadAttributes,
-  unescapeHTML
-} from "../server/index.js";
-export {
-  Fragment,
-  addAttribute,
-  createAstro,
-  createComponent,
-  createTransitionScope,
-  defineScriptVars,
-  defineStyleVars,
-  maybeRenderHead,
-  mergeSlots,
-  render,
-  renderComponent,
-  renderHead,
-  renderScript,
-  renderSlot,
-  renderTransition,
-  spreadAttributes,
-  unescapeHTML
-};