♻️ 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/zod/v4/classic/external.js

@@ -1,18 +0,0 @@
-export * as core from "../core/index.js";
-export * from "./schemas.js";
-export * from "./checks.js";
-export * from "./errors.js";
-export * from "./parse.js";
-export * from "./compat.js";
-// zod-specified
-import { config } from "../core/index.js";
-import en from "../locales/en.js";
-config(en());
-export { globalRegistry, registry, config, function, $output, $input, $brand, clone, regexes, treeifyError, prettifyError, formatError, flattenError, toJSONSchema, TimePrecision, NEVER, } from "../core/index.js";
-export * as locales from "../locales/index.js";
-// iso
-// must be exported from top-level
-// https://github.com/colinhacks/zod/issues/4491
-export { ZodISODateTime, ZodISODate, ZodISOTime, ZodISODuration } from "./iso.js";
-export * as iso from "./iso.js";
-export * as coerce from "./coerce.js";