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/prismjs/components/prism-jsstacktrace.min.js

@@ -0,0 +1 @@
+Prism.languages.jsstacktrace={"error-message":{pattern:/^\S.*/m,alias:"string"},"stack-frame":{pattern:/(^[ \t]+)at[ \t].*/m,lookbehind:!0,inside:{"not-my-code":{pattern:/^at[ \t]+(?!\s)(?:node\.js|<unknown>|.*(?:node_modules|\(<anonymous>\)|\(<unknown>|<anonymous>$|\(internal\/|\(node\.js)).*/m,alias:"comment"},filename:{pattern:/(\bat\s+(?!\s)|\()(?:[a-zA-Z]:)?[^():]+(?=:)/,lookbehind:!0,alias:"url"},function:{pattern:/(\bat\s+(?:new\s+)?)(?!\s)[_$a-zA-Z\xA0-\uFFFF<][.$\w\xA0-\uFFFF<>]*/,lookbehind:!0,inside:{punctuation:/\./}},punctuation:/[()]/,keyword:/\b(?:at|new)\b/,alias:{pattern:/\[(?:as\s+)?(?!\s)[_$a-zA-Z\xA0-\uFFFF][$\w\xA0-\uFFFF]*\]/,alias:"variable"},"line-number":{pattern:/:\d+(?::\d+)?\b/,alias:"number",inside:{punctuation:/:/}}}}};