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/micromark-util-encode/index.d.ts

@@ -0,0 +1,14 @@
+/**
+ * Encode only the dangerous HTML characters.
+ *
+ * This ensures that certain characters which have special meaning in HTML are
+ * dealt with.
+ * Technically, we can skip `>` and `"` in many cases, but CM includes them.
+ *
+ * @param {string} value
+ *   Value to encode.
+ * @returns {string}
+ *   Encoded value.
+ */
+export function encode(value: string): string;
+//# sourceMappingURL=index.d.ts.map