refactor: Move Astro to root, use PORT env (default 80), allow all hosts

- Move Astro files from dealplustech-astro/ to project root
- Update Dockerfile: PORT environment variable (default 80)
- Add vite.config.ts with allowedHosts: true
- Matches nixpacks behavior for Easypanel deployment
- No hardcoded ports or domains

node_modules/rehype-raw/lib/index.js

@@ -0,0 +1,36 @@
+/**
+ * @typedef {import('hast').Root} Root
+ * @typedef {import('hast-util-raw').Options} RawOptions
+ * @typedef {import('vfile').VFile} VFile
+ */
+
+/**
+ * @typedef {Omit<RawOptions, 'file'>} Options
+ *   Configuration.
+ */
+
+import {raw} from 'hast-util-raw'
+
+/**
+ * Parse the tree (and raw nodes) again, keeping positional info okay.
+ *
+ * @param {Options | null | undefined}  [options]
+ *   Configuration (optional).
+ * @returns
+ *   Transform.
+ */
+export default function rehypeRaw(options) {
+  /**
+   * @param {Root} tree
+   *   Tree.
+   * @param {VFile} file
+   *   File.
+   * @returns {Root}
+   *   New tree.
+   */
+  return function (tree, file) {
+    // Assume root in -> root out.
+    const result = /** @type {Root} */ (raw(tree, {...options, file}))
+    return result
+  }
+}