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-resolve-all/index.js

@@ -0,0 +1,32 @@
+/**
+ * @import {Event, Resolver, TokenizeContext} from 'micromark-util-types'
+ */
+
+/**
+ * Call all `resolveAll`s.
+ *
+ * @param {ReadonlyArray<{resolveAll?: Resolver | undefined}>} constructs
+ *   List of constructs, optionally with `resolveAll`s.
+ * @param {Array<Event>} events
+ *   List of events.
+ * @param {TokenizeContext} context
+ *   Context used by `tokenize`.
+ * @returns {Array<Event>}
+ *   Changed events.
+ */
+export function resolveAll(constructs, events, context) {
+  /** @type {Array<Resolver>} */
+  const called = []
+  let index = -1
+
+  while (++index < constructs.length) {
+    const resolve = constructs[index].resolveAll
+
+    if (resolve && !called.includes(resolve)) {
+      events = resolve(events, context)
+      called.push(resolve)
+    }
+  }
+
+  return events
+}