♻️ 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

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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/@astrojs/internal-helpers/dist/path.d.ts

@@ -1,39 +0,0 @@
-/**
- * A set of common path utilities commonly used through the Astro core and integration
- * projects. These do things like ensure a forward slash prepends paths.
- */
-export declare function appendExtension(path: string, extension: string): string;
-export declare function appendForwardSlash(path: string): string;
-export declare function prependForwardSlash(path: string): string;
-export declare function collapseDuplicateSlashes(path: string): string;
-export declare const MANY_TRAILING_SLASHES: RegExp;
-export declare function collapseDuplicateTrailingSlashes(path: string, trailingSlash: boolean): string;
-export declare function removeTrailingForwardSlash(path: string): string;
-export declare function removeLeadingForwardSlash(path: string): string;
-export declare function removeLeadingForwardSlashWindows(path: string): string;
-export declare function trimSlashes(path: string): string;
-export declare function startsWithForwardSlash(path: string): boolean;
-export declare function startsWithDotDotSlash(path: string): boolean;
-export declare function startsWithDotSlash(path: string): boolean;
-export declare function isRelativePath(path: string): boolean;
-export declare function isAbsolutePath(path: string): boolean;
-export declare function isInternalPath(path: string): boolean;
-export declare function joinPaths(...paths: (string | undefined)[]): string;
-export declare function removeFileExtension(path: string): string;
-export declare function removeQueryString(path: string): string;
-/**
- * Checks whether the path is considered a remote path.
- * Remote means untrusted in this context, so anything that isn't a straightforward
- * local path is considered remote.
- *
- * @param src
- */
-export declare function isRemotePath(src: string): boolean;
-/**
- * Checks if parentPath is a parent directory of childPath.
- */
-export declare function isParentDirectory(parentPath: string, childPath: string): boolean;
-export declare function slash(path: string): string;
-export declare function fileExtension(path: string): string;
-export declare function removeBase(path: string, base: string): string;
-export declare function hasFileExtension(path: string): boolean;