Reduce progress callback interval to every 10 rounds

event_miner.c

@@ -378,8 +378,8 @@ static void* miner_thread(void* arg) {
             break;  // Exit after reporting solution
         }
         
-        // Progress reporting every 9999 attempts
-        if (ctx->progress_callback && attempts % 9999 == 0) {
+        // Progress reporting every 10 attempts
+        if (ctx->progress_callback && attempts % 10 == 0) {
             ctx->progress_callback(ctx->thread_id, attempts, ctx->user_data);
         }