v0.4.12 - Refactor NIP-17 admin commands: eliminate ~400 lines of duplicated code with unified helper functions, fix SQL query bugs, and remove unused parameters

src/dm_admin.h

@@ -18,4 +18,10 @@ int process_nip17_admin_command(cJSON* dm_event, char* error_message, size_t err
 int is_nip17_gift_wrap_for_relay(cJSON* gift_wrap_event);
 char* generate_stats_json(void);
 
+// Unified NIP-17 response functions
+int send_nip17_response(const char* sender_pubkey, const char* response_content,
+                       char* error_message, size_t error_size);
+char* generate_config_text(void);
+char* generate_stats_text(void);
+
 #endif // DM_ADMIN_H