♻️ 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/array-iterate/index.d.ts

@@ -1,48 +0,0 @@
-/**
- * Function called for each element in an array.
- *
- * @typeParam Value
- *   Element in array.
- * @typeParam ThisArg
- *   Context object passed as `this`.
- * @param value
- *   Element in array.
- * @param index
- *   Index of `value` in `values`.
- * @param values
- *   List.
- * @param [thisArg]
- *   Context object
- * @returns {number|void}
- *   The `index` to move to next.
- */
-export type CallbackFn<Value, ThisArg = undefined> = (
-  this: ThisArg,
-  value: Value,
-  index: number,
-  array: Value[]
-) => number | void
-
-/**
- * Perform the specified action for each element in an array.
- * When `callbackFn` returns a `number`, moves to the element at that index
- * next.
- *
- * @typeParam Value
- *   Type in `values`.
- * @typeParam ThisArg
- *   Context passed as `this` to callback.
- * @param values
- *   Values to iterate over.
- * @param callbackFn
- *   Function called for each element.
- *   Can return the `index` to move to next.
- * @param [thisArg]
- *   Optional object assigned as `this` in `callbackFn`.
- * @returns {void}
- */
-export function arrayIterate<Value, ThisArg = undefined>(
-  values: Value[],
-  callbackFn: CallbackFn<Value, ThisArg>,
-  thisArg?: ThisArg
-): void