♻️ 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
✅ Cookie consent banner included
✅ 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/postcss/lib/no-work-result.d.ts

@@ -1,46 +0,0 @@
-import LazyResult from './lazy-result.js'
-import { SourceMap } from './postcss.js'
-import Processor from './processor.js'
-import Result, { Message, ResultOptions } from './result.js'
-import Root from './root.js'
-import Warning from './warning.js'
-
-declare namespace NoWorkResult {
-  // eslint-disable-next-line @typescript-eslint/no-use-before-define
-  export { NoWorkResult_ as default }
-}
-
-/**
- * A Promise proxy for the result of PostCSS transformations.
- * This lazy result instance doesn't parse css unless `NoWorkResult#root` or `Result#root`
- * are accessed. See the example below for details.
- * A `NoWork` instance is returned by `Processor#process` ONLY when no plugins defined.
- *
- * ```js
- * const noWorkResult = postcss().process(css) // No plugins are defined.
- *                                             // CSS is not parsed
- * let root = noWorkResult.root // now css is parsed because we accessed the root
- * ```
- */
-declare class NoWorkResult_ implements LazyResult<Root> {
-  catch: Promise<Result<Root>>['catch']
-  finally: Promise<Result<Root>>['finally']
-  then: Promise<Result<Root>>['then']
-  get content(): string
-  get css(): string
-  get map(): SourceMap
-  get messages(): Message[]
-  get opts(): ResultOptions
-  get processor(): Processor
-  get root(): Root
-  get [Symbol.toStringTag](): string
-  constructor(processor: Processor, css: string, opts: ResultOptions)
-  async(): Promise<Result<Root>>
-  sync(): Result<Root>
-  toString(): string
-  warnings(): Warning[]
-}
-
-declare class NoWorkResult extends NoWorkResult_ {}
-
-export = NoWorkResult