♻️ 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/semver/internal/constants.js

@@ -1,37 +0,0 @@
-'use strict'
-
-// Note: this is the semver.org version of the spec that it implements
-// Not necessarily the package version of this code.
-const SEMVER_SPEC_VERSION = '2.0.0'
-
-const MAX_LENGTH = 256
-const MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER ||
-/* istanbul ignore next */ 9007199254740991
-
-// Max safe segment length for coercion.
-const MAX_SAFE_COMPONENT_LENGTH = 16
-
-// Max safe length for a build identifier. The max length minus 6 characters for
-// the shortest version with a build 0.0.0+BUILD.
-const MAX_SAFE_BUILD_LENGTH = MAX_LENGTH - 6
-
-const RELEASE_TYPES = [
-  'major',
-  'premajor',
-  'minor',
-  'preminor',
-  'patch',
-  'prepatch',
-  'prerelease',
-]
-
-module.exports = {
-  MAX_LENGTH,
-  MAX_SAFE_COMPONENT_LENGTH,
-  MAX_SAFE_BUILD_LENGTH,
-  MAX_SAFE_INTEGER,
-  RELEASE_TYPES,
-  SEMVER_SPEC_VERSION,
-  FLAG_INCLUDE_PRERELEASE: 0b001,
-  FLAG_LOOSE: 0b010,
-}