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

.dockerignore

@@ -1,15 +1,24 @@
-.git
-.gitignore
+# Astro / node
+node_modules/
+dist/
+.astro/
+pnpm-debug.log*
+
+# Python tooling (not needed in image)
+__pycache__/
+*.pyc
+mirror_log*.txt
+*.py
+
+# Secrets / local env
 .env
 .env.*
 !.env.example
-*.md
-mirror_log*.txt
-__pycache__
-*.pyc
-postprocess.py
-repair.py
-cleanup.py
-common.py
-mirror.py
-rewrite.py
+
+# VCS / docs / local
+.git
+.gitignore
+README.md
+
+# Original static clone (superseded by src/pages + public)
+site/