♻️ 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/config/index.js

@@ -1,48 +0,0 @@
-import { createRoutesList } from "../core/routing/index.js";
-import { createDevelopmentManifest } from "../vite-plugin-astro-server/plugin.js";
-function defineConfig(config) {
-  return config;
-}
-function getViteConfig(userViteConfig, inlineAstroConfig = {}) {
-  return async ({ mode, command }) => {
-    const cmd = command === "serve" ? "dev" : "build";
-    const [
-      fs,
-      { mergeConfig },
-      { createNodeLogger },
-      { resolveConfig, createSettings },
-      { createVite },
-      { runHookConfigSetup, runHookConfigDone },
-      { astroContentListenPlugin }
-    ] = await Promise.all([
-      import("node:fs"),
-      import("vite"),
-      import("../core/config/logging.js"),
-      import("../core/config/index.js"),
-      import("../core/create-vite.js"),
-      import("../integrations/hooks.js"),
-      import("./vite-plugin-content-listen.js")
-    ]);
-    const logger = createNodeLogger(inlineAstroConfig);
-    const { astroConfig: config } = await resolveConfig(inlineAstroConfig, cmd);
-    let settings = await createSettings(config, userViteConfig.root);
-    settings = await runHookConfigSetup({ settings, command: cmd, logger });
-    const routesList = await createRoutesList({ settings }, logger);
-    const manifest = createDevelopmentManifest(settings);
-    const viteConfig = await createVite(
-      {
-        plugins: config.legacy.collections ? [
-          // Initialize the content listener
-          astroContentListenPlugin({ settings, logger, fs })
-        ] : []
-      },
-      { settings, command: cmd, logger, mode, sync: false, manifest, routesList }
-    );
-    await runHookConfigDone({ settings, logger });
-    return mergeConfig(viteConfig, userViteConfig);
-  };
-}
-export {
-  defineConfig,
-  getViteConfig
-};