♻️ 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-commit.mjs

@@ -1,8 +0,0 @@
-import diff from './diff.mjs'
-
-const lang = Object.freeze(JSON.parse("{\"displayName\":\"Git Commit Message\",\"name\":\"git-commit\",\"patterns\":[{\"begin\":\"(?=^diff --git)\",\"contentName\":\"source.diff\",\"end\":\"\\\\z\",\"name\":\"meta.embedded.diff.git-commit\",\"patterns\":[{\"include\":\"source.diff\"}]},{\"begin\":\"^(?!#)\",\"end\":\"^(?=#)\",\"name\":\"meta.scope.message.git-commit\",\"patterns\":[{\"captures\":{\"1\":{\"name\":\"invalid.deprecated.line-too-long.git-commit\"},\"2\":{\"name\":\"invalid.illegal.line-too-long.git-commit\"}},\"match\":\"\\\\G.{0,50}(.{0,22}(.*))$\",\"name\":\"meta.scope.subject.git-commit\"}]},{\"begin\":\"^(?=#)\",\"contentName\":\"comment.line.number-sign.git-commit\",\"end\":\"^(?!#)\",\"name\":\"meta.scope.metadata.git-commit\",\"patterns\":[{\"captures\":{\"1\":{\"name\":\"markup.changed.git-commit\"}},\"match\":\"^#\\\\t((modified|renamed):.*)$\"},{\"captures\":{\"1\":{\"name\":\"markup.inserted.git-commit\"}},\"match\":\"^#\\\\t(new file:.*)$\"},{\"captures\":{\"1\":{\"name\":\"markup.deleted.git-commit\"}},\"match\":\"^#\\\\t(deleted.*)$\"},{\"captures\":{\"1\":{\"name\":\"keyword.other.file-type.git-commit\"},\"2\":{\"name\":\"string.unquoted.filename.git-commit\"}},\"match\":\"^#\\\\t([^:]+): *(.*)$\"}]}],\"scopeName\":\"text.git-commit\",\"embeddedLangs\":[\"diff\"]}"))
-
-export default [
-...diff,
-lang
-]