v0.4.2 - Implement NIP-11 Relay Information Document with event-based configuration - make relay info dynamically configurable via admin API

src/nip013.c

@@ -60,6 +60,7 @@ void init_pow_config() {
             g_unified_cache.pow_config.enabled = 0;
             log_info("PoW validation disabled via configuration");
         }
+        free((char*)pow_mode); // Free dynamically allocated string
     } else {
         // Default to basic mode
         g_unified_cache.pow_config.validation_flags = NOSTR_POW_VALIDATE_BASIC;