♻️ 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/vite-plugin-astro-server/base.js

@@ -1,57 +0,0 @@
-import * as fs from "node:fs";
-import path from "node:path";
-import { appendForwardSlash } from "@astrojs/internal-helpers/path";
-import colors from "piccolore";
-import { notFoundTemplate, subpathNotUsedTemplate } from "../template/4xx.js";
-import { writeHtmlResponse } from "./response.js";
-function baseMiddleware(settings, logger) {
-  const { config } = settings;
-  const base = config.base || "/";
-  const site = config.site ? new URL(base, config.site) : void 0;
-  const devRootURL = new URL(base, "http://localhost");
-  const devRoot = site ? site.pathname : devRootURL.pathname;
-  const devRootReplacement = devRoot.endsWith("/") ? "/" : "";
-  return function devBaseMiddleware(req, res, next) {
-    const url = req.url;
-    let pathname;
-    try {
-      pathname = decodeURI(new URL(url, "http://localhost").pathname);
-    } catch (e) {
-      return next(e);
-    }
-    if (pathname.startsWith(devRoot)) {
-      req.url = url.replace(devRoot, devRootReplacement);
-      return next();
-    }
-    if (pathname === "/" || pathname === "/index.html") {
-      const html = subpathNotUsedTemplate(devRoot, pathname);
-      return writeHtmlResponse(res, 404, html);
-    }
-    if (req.headers.accept?.includes("text/html")) {
-      const html = notFoundTemplate(pathname);
-      return writeHtmlResponse(res, 404, html);
-    }
-    const publicPath = new URL("." + req.url, config.publicDir);
-    fs.stat(publicPath, (_err, stats) => {
-      if (stats) {
-        const publicDir = appendForwardSlash(
-          path.posix.relative(config.root.pathname, config.publicDir.pathname)
-        );
-        const expectedLocation = new URL(devRootURL.pathname + url, devRootURL).pathname;
-        logger.error(
-          "router",
-          `Request URLs for ${colors.bold(
-            publicDir
-          )} assets must also include your base. "${expectedLocation}" expected, but received "${url}".`
-        );
-        const html = subpathNotUsedTemplate(devRoot, pathname);
-        return writeHtmlResponse(res, 404, html);
-      } else {
-        next();
-      }
-    });
-  };
-}
-export {
-  baseMiddleware
-};