Add photo galleries API and frontend for public and admin viewing.

Introduces the Go photo-api service, nginx/systemd deploy wiring, and Next.js gallery/lightbox pages so event photos can be managed and browsed.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/next.config.js

@@ -4,6 +4,10 @@
 // being hardcoded to localhost.
 const BACKEND_URL = process.env.BACKEND_URL || 'http://localhost:3001';
 
+// The standalone photo gallery service (photo-api/). Must be rewritten
+// before the generic /api rule below — Next rewrites are order-sensitive.
+const PHOTO_API_URL = process.env.PHOTO_API_URL || 'http://localhost:3003';
+
 // Extra image hosts can be allowed via a comma-separated env var (e.g. a CDN).
 const extraImageHosts = (process.env.NEXT_PUBLIC_IMAGE_HOSTS || '')
   .split(',')
@@ -20,6 +24,9 @@ const securityHeaders = [
 ];
 
 const nextConfig = {
+  // Overridable so a production build can run while `next dev` holds .next
+  // (e.g. NEXT_DIST_DIR=.next-build npm run build).
+  distDir: process.env.NEXT_DIST_DIR || '.next',
   images: {
     // Restrict remote image sources to a known allowlist instead of allowing any
     // https host (which let the Next image optimizer be used as an open proxy).
@@ -39,6 +46,10 @@ const nextConfig = {
   },
   async rewrites() {
     return [
+      {
+        source: '/api/photos/:path*',
+        destination: `${PHOTO_API_URL}/api/photos/:path*`,
+      },
       {
         source: '/api/:path*',
         destination: `${BACKEND_URL}/api/:path*`,