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/unist-util-visit-parents/index.d.ts

@@ -0,0 +1,14 @@
+export type {Test} from 'unist-util-is'
+export type {
+  Action,
+  ActionTuple,
+  BuildVisitor,
+  // Undocumented: used in `unist-util-visit`:
+  InclusiveDescendant,
+  Index,
+  // Undocumented: used in `unist-util-visit`:
+  Matches,
+  Visitor,
+  VisitorResult
+} from './lib/index.js'
+export {CONTINUE, EXIT, SKIP, visitParents} from './lib/index.js'