♻️ 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/zwitch/index.d.ts

@@ -1,67 +0,0 @@
-/**
- * Handle values based on a field.
- *
- * @template {InvalidHandler} [Invalid=InvalidHandler]
- * @template {UnknownHandler} [Unknown=UnknownHandler]
- * @template {Record<string, Handler>} [Handlers=Record<string, Handler>]
- * @param {string} key
- *   Field to switch on.
- * @param {Options<Invalid, Unknown, Handlers>} [options]
- *   Configuration (required).
- * @returns {{unknown: Unknown, invalid: Invalid, handlers: Handlers, (...parameters: Parameters<Handlers[keyof Handlers]>): ReturnType<Handlers[keyof Handlers]>, (...parameters: Parameters<Unknown>): ReturnType<Unknown>}}
- */
-export function zwitch<
-  Invalid extends InvalidHandler = InvalidHandler,
-  Unknown extends UnknownHandler = UnknownHandler,
-  Handlers extends Record<string, Handler> = Record<string, Handler>
->(
-  key: string,
-  options?: Options<Invalid, Unknown, Handlers> | undefined
-): {
-  (...parameters: Parameters<Handlers[keyof Handlers]>): ReturnType<
-    Handlers[keyof Handlers]
-  >
-  (...parameters: Parameters<Unknown>): ReturnType<Unknown>
-  unknown: Unknown
-  invalid: Invalid
-  handlers: Handlers
-}
-/**
- * Handle a value, with a certain ID field set to a certain value.
- * The ID field is passed to `zwitch`, and it’s value is this function’s
- * place on the `handlers` record.
- */
-export type Handler = (...parameters: any[]) => any
-/**
- * Handle values that do have a certain ID field, but it’s set to a value
- * that is not listed in the `handlers` record.
- */
-export type UnknownHandler = (value: unknown, ...rest: any[]) => any
-/**
- * Handle values that do not have a certain ID field.
- */
-export type InvalidHandler = (
-  value: unknown,
-  ...rest: any[]
-) => void | null | undefined | never
-/**
- * Configuration (required).
- */
-export type Options<
-  Invalid extends InvalidHandler = InvalidHandler,
-  Unknown extends UnknownHandler = UnknownHandler,
-  Handlers extends Record<string, Handler> = Record<string, Handler>
-> = {
-  /**
-   * Handler to use for invalid values.
-   */
-  invalid?: Invalid | undefined
-  /**
-   * Handler to use for unknown values.
-   */
-  unknown?: Unknown | undefined
-  /**
-   * Handlers to use.
-   */
-  handlers?: Handlers | undefined
-}