fix: copy map_editor.html to docker builder stage

Dockerfile.frontend.prod

@@ -14,7 +14,7 @@ RUN npm ci
 # Copy source code
 COPY src ./src
 COPY public ./public
-COPY index.html ./
+COPY index.html map_editor.html ./
 
 # Build application
 RUN npm run build
@@ -35,8 +35,8 @@ WORKDIR /usr/share/nginx/html
 # Copy built assets from builder
 COPY --from=builder /app/dist .
 
-# Copy static image assets referenced by literal /img/... paths
+# Copy static image assets referenced by literal /img/... paths (Obsolete: img folder is now public/img and copied via dist)
-COPY img ./img
+# COPY img ./img
 
 # Copy root-level logo asset referenced directly by index.html
 # COPY ["image 92.png", "./image 92.png"]