♻️ 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/astro/dist/content/runtime-assets.js

@@ -1,28 +0,0 @@
-import { z } from "zod";
-import { emitESMImage } from "../assets/utils/node/emitAsset.js";
-function createImage(pluginContext, shouldEmitFile, entryFilePath, experimentalSvgEnabled) {
-  return () => {
-    return z.string().transform(async (imagePath, ctx) => {
-      const resolvedFilePath = (await pluginContext.resolve(imagePath, entryFilePath))?.id;
-      const metadata = await emitESMImage(
-        resolvedFilePath,
-        pluginContext.meta.watchMode,
-        // FUTURE: Remove in this in v6
-        experimentalSvgEnabled,
-        shouldEmitFile ? pluginContext.emitFile : void 0
-      );
-      if (!metadata) {
-        ctx.addIssue({
-          code: "custom",
-          message: `Image ${imagePath} does not exist. Is the path correct?`,
-          fatal: true
-        });
-        return z.never();
-      }
-      return { ...metadata, ASTRO_ASSET: metadata.fsPath };
-    });
-  };
-}
-export {
-  createImage
-};