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

package.json

@@ -0,0 +1,17 @@
+{
+  "name": "stale-satellite",
+  "type": "module",
+  "version": "0.0.1",
+  "engines": {
+    "node": ">=22.12.0"
+  },
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro build",
+    "preview": "astro preview",
+    "astro": "astro"
+  },
+  "dependencies": {
+    "astro": "^7.1.6"
+  }
+}