♻️ 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/@shikijs/langs/dist/vue-sfc-style-variable-injection.mjs

@@ -1,8 +0,0 @@
-import javascript from './javascript.mjs'
-
-const lang = Object.freeze(JSON.parse("{\"fileTypes\":[],\"injectTo\":[\"source.vue\"],\"injectionSelector\":\"L:source.css -comment, L:source.postcss -comment, L:source.sass -comment, L:source.stylus -comment\",\"name\":\"vue-sfc-style-variable-injection\",\"patterns\":[{\"include\":\"#vue-sfc-style-variable-injection\"}],\"repository\":{\"vue-sfc-style-variable-injection\":{\"begin\":\"\\\\b(v-bind)\\\\s*\\\\(\",\"beginCaptures\":{\"1\":{\"name\":\"entity.name.function\"}},\"end\":\"\\\\)\",\"name\":\"vue.sfc.style.variable.injection.v-bind\",\"patterns\":[{\"begin\":\"([\\\"'])\",\"beginCaptures\":{\"1\":{\"name\":\"punctuation.definition.tag.begin.html\"}},\"end\":\"(\\\\1)\",\"endCaptures\":{\"1\":{\"name\":\"punctuation.definition.tag.end.html\"}},\"name\":\"source.ts.embedded.html.vue\",\"patterns\":[{\"include\":\"source.js\"}]},{\"include\":\"source.js\"}]}},\"scopeName\":\"vue.sfc.style.variable.injection\",\"embeddedLangs\":[\"javascript\"]}"))
-
-export default [
-...javascript,
-lang
-]