♻️ 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/ranges/simplify.js

@@ -1,49 +0,0 @@
-'use strict'
-
-// given a set of versions and a range, create a "simplified" range
-// that includes the same versions that the original range does
-// If the original range is shorter than the simplified one, return that.
-const satisfies = require('../functions/satisfies.js')
-const compare = require('../functions/compare.js')
-module.exports = (versions, range, options) => {
-  const set = []
-  let first = null
-  let prev = null
-  const v = versions.sort((a, b) => compare(a, b, options))
-  for (const version of v) {
-    const included = satisfies(version, range, options)
-    if (included) {
-      prev = version
-      if (!first) {
-        first = version
-      }
-    } else {
-      if (prev) {
-        set.push([first, prev])
-      }
-      prev = null
-      first = null
-    }
-  }
-  if (first) {
-    set.push([first, null])
-  }
-
-  const ranges = []
-  for (const [min, max] of set) {
-    if (min === max) {
-      ranges.push(min)
-    } else if (!max && min === v[0]) {
-      ranges.push('*')
-    } else if (!max) {
-      ranges.push(`>=${min}`)
-    } else if (min === v[0]) {
-      ranges.push(`<=${max}`)
-    } else {
-      ranges.push(`${min} - ${max}`)
-    }
-  }
-  const simplified = ranges.join(' || ')
-  const original = typeof range.raw === 'string' ? range.raw : String(range)
-  return simplified.length < original.length ? simplified : range
-}