♻️ 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/git-rebase.mjs

@@ -1,8 +0,0 @@
-import shellscript from './shellscript.mjs'
-
-const lang = Object.freeze(JSON.parse("{\"displayName\":\"Git Rebase Message\",\"name\":\"git-rebase\",\"patterns\":[{\"captures\":{\"1\":{\"name\":\"punctuation.definition.comment.git-rebase\"}},\"match\":\"^\\\\s*(#).*$\\\\n?\",\"name\":\"comment.line.number-sign.git-rebase\"},{\"captures\":{\"1\":{\"name\":\"support.function.git-rebase\"},\"2\":{\"name\":\"constant.sha.git-rebase\"},\"3\":{\"name\":\"meta.commit-message.git-rebase\"}},\"match\":\"^\\\\s*(pick|p|reword|r|edit|e|squash|s|fixup|f|drop|d)\\\\s+([0-9a-f]+)\\\\s+(.*)$\",\"name\":\"meta.commit-command.git-rebase\"},{\"captures\":{\"1\":{\"name\":\"support.function.git-rebase\"},\"2\":{\"patterns\":[{\"include\":\"source.shell\"}]}},\"match\":\"^\\\\s*(exec|x)\\\\s+(.*)$\",\"name\":\"meta.commit-command.git-rebase\"},{\"captures\":{\"1\":{\"name\":\"support.function.git-rebase\"}},\"match\":\"^\\\\s*(b(?:reak|))\\\\s*$\",\"name\":\"meta.commit-command.git-rebase\"}],\"scopeName\":\"text.git-rebase\",\"embeddedLangs\":[\"shellscript\"]}"))
-
-export default [
-...shellscript,
-lang
-]