Fix duplicate @submit matcher in Caddyfile

- Combined @submit matcher conditions into single block
- Fixed 'matcher is defined more than once' error
- Proper Caddyfile syntax for combining path and method matchers

scripts/Caddyfile

@@ -56,8 +56,10 @@ yourdomain.com {
     rate_limit @api 30r/m
     
     # Submission rate limiting: 5 requests per minute
-    @submit path /api/locations
-    @submit method POST
+    @submit {
+        path /api/locations
+        method POST
+    }
     rate_limit @submit 5r/m
 }