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/runtime/client/dev-toolbar/ui-library/radio-checkbox.d.ts

@@ -0,0 +1,13 @@
+export declare class DevToolbarRadioCheckbox extends HTMLElement {
+    private _radioStyle;
+    input: HTMLInputElement;
+    shadowRoot: ShadowRoot;
+    get radioStyle(): "red" | "green" | "yellow" | "blue" | "gray" | "purple";
+    set radioStyle(value: "red" | "green" | "yellow" | "blue" | "gray" | "purple");
+    static observedAttributes: string[];
+    constructor();
+    connectedCallback(): void;
+    updateStyle(): void;
+    updateInputState(): void;
+    attributeChangedCallback(): void;
+}