Rebuild as Astro static site (output identical to original)

- Move all 39 cloned pages + assets into public/ (Astro copies verbatim to dist/)
  -> dist/ is byte-identical to www.mitsuthailand.com (home 143633 bytes exact)
- Add Astro project: astro.config.mjs, package.json, src/layouts/Base.astro,
  src/pages/example.astro (sample Astro component page, builds to /example/)
- Multi-stage Dockerfile: pnpm build -> nginx serve + env-injecting entrypoint
- Env-configurable: GA_ID, FORM_EMAIL, GMAP_LAT/LNG/.env.example
- Remove Python crawl tooling and old nginx-static site/ layout
- Verified: astro build -> 39 pages + example; all routes serve 200 via preview

public/assets/external/track/track.js

@@ -0,0 +1,3 @@
+var inframe="";var inframeReferrer=false;try{if(top.document.domain!=self.document.domain){var inframeReferrer=document.referrer;}else{}}catch(err){var inframeReferrer=document.referrer;}
+if(inframeReferrer){var elemLink=document.createElement('a');elemLink.setAttribute('href',inframeReferrer);inframe="&inframe="+escape(elemLink.hostname);}
+document.write("<IMG SRC='//www.yellowpages.co.th/track/track.php?url="+escape(window.location.href)+inframe+"' HEIGHT='0' WIDTH='0' ID='typtrack' ALT='' TITLE='' REL='NOFOLLOW' STYLE='width:0px; height:0px; border:0px '/>");