♻️ 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
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✅ 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/@astrojs/telemetry/dist/system-info.js

@@ -1,35 +0,0 @@
-import os from "node:os";
-import { name as ciName, isCI } from "ci-info";
-import isDocker from "is-docker";
-import isWSL from "is-wsl";
-let meta;
-function getSystemInfo(versions) {
-  if (meta) {
-    return meta;
-  }
-  const cpus = os.cpus() || [];
-  return {
-    // Version information
-    nodeVersion: process.version.replace(/^v?/, ""),
-    viteVersion: versions.viteVersion,
-    astroVersion: versions.astroVersion,
-    // Software information
-    systemPlatform: os.platform(),
-    systemRelease: os.release(),
-    systemArchitecture: os.arch(),
-    // Machine information
-    cpuCount: cpus.length,
-    cpuModel: cpus.length ? cpus[0].model : null,
-    cpuSpeed: cpus.length ? cpus[0].speed : null,
-    memoryInMb: Math.trunc(os.totalmem() / Math.pow(1024, 2)),
-    // Environment information
-    isDocker: isDocker(),
-    isTTY: process.stdout.isTTY,
-    isWSL,
-    isCI,
-    ciName
-  };
-}
-export {
-  getSystemInfo
-};