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/csso/lib/replace/atrule/keyframes.js

@@ -0,0 +1,21 @@
+export default function(node) {
+    node.block.children.forEach((rule) => {
+        rule.prelude.children.forEach((simpleselector) => {
+            simpleselector.children.forEach((data, item) => {
+                if (data.type === 'Percentage' && data.value === '100') {
+                    item.data = {
+                        type: 'TypeSelector',
+                        loc: data.loc,
+                        name: 'to'
+                    };
+                } else if (data.type === 'TypeSelector' && data.name === 'from') {
+                    item.data = {
+                        type: 'Percentage',
+                        loc: data.loc,
+                        value: '0'
+                    };
+                }
+            });
+        });
+    });
+};