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/astro/dist/content/watcher.js

@@ -0,0 +1,38 @@
+function createWatcherWrapper(watcher) {
+  const listeners = /* @__PURE__ */ new Map();
+  const handler = {
+    get(target, prop, receiver) {
+      if (prop === "on") {
+        return function(event, callback) {
+          if (!listeners.has(event)) {
+            listeners.set(event, /* @__PURE__ */ new Set());
+          }
+          listeners.get(event).add(callback);
+          return Reflect.get(target, prop, receiver).call(target, event, callback);
+        };
+      }
+      if (prop === "off") {
+        return function(event, callback) {
+          listeners.get(event)?.delete(callback);
+          return Reflect.get(target, prop, receiver).call(target, event, callback);
+        };
+      }
+      if (prop === "removeAllTrackedListeners") {
+        return function() {
+          for (const [event, callbacks] of listeners.entries()) {
+            for (const callback of callbacks) {
+              target.off(event, callback);
+            }
+            callbacks.clear();
+          }
+          listeners.clear();
+        };
+      }
+      return Reflect.get(target, prop, receiver);
+    }
+  };
+  return new Proxy(watcher, handler);
+}
+export {
+  createWatcherWrapper
+};