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/mdast-util-to-hast/lib/handlers/code.d.ts

@@ -0,0 +1,20 @@
+/**
+ * @import {Element, Properties} from 'hast'
+ * @import {Code} from 'mdast'
+ * @import {State} from '../state.js'
+ */
+/**
+ * Turn an mdast `code` node into hast.
+ *
+ * @param {State} state
+ *   Info passed around.
+ * @param {Code} node
+ *   mdast node.
+ * @returns {Element}
+ *   hast node.
+ */
+export function code(state: State, node: Code): Element;
+import type { State } from '../state.js';
+import type { Code } from 'mdast';
+import type { Element } from 'hast';
+//# sourceMappingURL=code.d.ts.map