Serve with Node/Express instead of nginx (matches working astroreal pattern)

- Add server.js: Express serves dist/ + injects env (GA_ID, FORM_EMAIL, GMAP) at runtime
- Container port now 4321 (identical to moreminimore-astroreal that deploys on EasyPanel)
- Remove nginx.conf + entrypoint.sh (no longer needed); Dockerfile uses node server.js
- Verified: pnpm build + node server.js -> all 40 pages serve 200, env injected, 0 leftovers

.env.example

@@ -1,23 +1,21 @@
 # ============================================================
-# มิตซูชัยพร static site — environment variables
-# Copy to `.env` (or set in EasyPanel service env) and adjust.
-# These get injected into the HTML at container startup by entrypoint.sh.
+# มิตซูชัยพร — environment variables
+# Set in EasyPanel (Service → Environment) or --env at docker run.
+# Injected by server.js when serving HTML.
 # ============================================================
 
+# Port Express listens on (EasyPanel container port must MATCH this)
+PORT=4321
+
 # --- Google Analytics / GTM ---
-# Measurement ID (e.g. G-XXXXXXXXXX). Leave EMPTY to disable analytics.
-# GA_ID=G-L4835B8PSW
+# Leave EMPTY to disable analytics.
 GA_ID=
 
 # --- Contact / RFQ form email (FormSubmit) ---
-# Email that receives form submissions.
 FORM_EMAIL=mail@mitsuchaiyaporn.com
 
-# --- Google Map (type A — free embed, NO API key required) ---
-# Option 1: provide lat/lng (recommended)
+# --- Google Map (type A — free embed, no API key) ---
 GMAP_LAT=13.557229094780995
 GMAP_LNG=100.28916297408983
 GMAP_ZOOM=16
-
-# Option 2: full embed URL (overrides lat/lng)
-# GMAP_EMBED=https://maps.google.com/maps?q=13.557229094780995,100.28916297408983&z=16&output=embed
+# GMAP_EMBED=https://maps.google.com/maps?q=13.55,100.28&z=16&output=embed