♻️ 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/nanoid/non-secure/index.d.ts

@@ -1,33 +0,0 @@
-/**
- * Generate URL-friendly unique ID. This method uses the non-secure
- * predictable random generator with bigger collision probability.
- *
- * ```js
- * import { nanoid } from 'nanoid/non-secure'
- * model.id = nanoid() //=> "Uakgb_J5m9g-0JDMbcJqL"
- * ```
- *
- * @param size Size of the ID. The default size is 21.
- * @returns A random string.
- */
-export function nanoid(size?: number): string
-
-/**
- * Generate a unique ID based on a custom alphabet.
- * This method uses the non-secure predictable random generator
- * with bigger collision probability.
- *
- * @param alphabet Alphabet used to generate the ID.
- * @param defaultSize Size of the ID. The default size is 21.
- * @returns A random string generator.
- *
- * ```js
- * import { customAlphabet } from 'nanoid/non-secure'
- * const nanoid = customAlphabet('0123456789абвгдеё', 5)
- * model.id = //=> "8ё56а"
- * ```
- */
-export function customAlphabet(
-  alphabet: string,
-  defaultSize?: number
-): (size?: number) => string