fix(caddy): add http block for welcome page to prevent redirect loop

when accessing welcome page through cloudflare tunnel, caddy was
redirecting http to https, causing an infinite redirect loop.
adding an explicit http block prevents automatic https redirect.

Caddyfile

@@ -162,6 +162,17 @@ https://{$NEO4J_HOSTNAME}:7687 {
 }
 
 # Welcome Page (Post-install dashboard)
+# HTTP block for Cloudflare Tunnel access (prevents redirect loop)
+http://{$WELCOME_HOSTNAME} {
+    basic_auth {
+        {$WELCOME_USERNAME} {$WELCOME_PASSWORD_HASH}
+    }
+    root * /srv/welcome
+    file_server
+    try_files {path} /index.html
+}
+
+# HTTPS block for direct access
 {$WELCOME_HOSTNAME} {
     basic_auth {
         {$WELCOME_USERNAME} {$WELCOME_PASSWORD_HASH}