♻️ 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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✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/get-east-asian-width/index.d.ts

@@ -1,60 +0,0 @@
-export type WidthType = 'fullwidth' | 'halfwidth' | 'wide' | 'narrow' | 'neutral' | 'ambiguous';
-
-export type Options = {
-	/**
-	Whether to treat an `'ambiguous'` character as wide.
-
-	@default true
-
-	@example
-	```
-	import {eastAsianWidth} from 'get-east-asian-width';
-
-	const codePoint = '⛣'.codePointAt(0);
-
-	console.log(eastAsianWidth(codePoint));
-	//=> 1
-
-	console.log(eastAsianWidth(codePoint, {ambiguousAsWide: true}));
-	//=> 2
-	```
-
-	> Ambiguous characters behave like wide or narrow characters depending on the context (language tag, script identification, associated font, source of data, or explicit markup; all can provide the context). __If the context cannot be established reliably, they should be treated as narrow characters by default.__
-	> - http://www.unicode.org/reports/tr11/
-	*/
-	readonly ambiguousAsWide?: boolean;
-};
-
-/**
-Returns the width as a number for the given code point.
-
-@param codePoint - A Unicode code point.
-
-@example
-```
-import {eastAsianWidth} from 'get-east-asian-width';
-
-const codePoint = '字'.codePointAt(0);
-
-console.log(eastAsianWidth(codePoint));
-//=> 2
-```
-*/
-export function eastAsianWidth(codePoint: number, options?: Options): 1 | 2;
-
-/**
-Returns the type of “East Asian Width” for the given code point.
-
-@param codePoint - A Unicode code point.
-
-@example
-```
-import {eastAsianWidthType} from 'get-east-asian-width';
-
-const codePoint = '字'.codePointAt(0);
-
-console.log(eastAsianWidthType(codePoint));
-//=> 'wide'
-```
-*/
-export function eastAsianWidthType(codePoint: number): WidthType;