Fix Clippy: use is_multiple_of() instead of modulo check

Author: firstdorsal

example-server/src/modules/orders.rs

@@ -164,7 +164,7 @@ async fn order_processor(store: OrderStore) {
             // Simulate state transitions
             let new_status = match current_status {
                 OrderStatus::Pending => {
-                    if processed_count % 10 == 0 {
+                    if processed_count.is_multiple_of(10) {
                         tracing::warn!(
                             order_id = %order_id,
                             current_status = "pending",
@@ -296,7 +296,7 @@ async fn fraud_detection_monitor() {
         }
 
         // Simulate occasional false positive review
-        if scan_count % 23 == 0 {
+        if scan_count.is_multiple_of(23) {
             tracing::info!(
                 scan_id = %scan_count,
                 review_type = "manual_review_required",
@@ -450,7 +450,7 @@ async fn create_order(
     );
 
     // Simulate occasional payment failure
-    if order_id.as_u128() % 10 == 0 {
+    if order_id.as_u128().is_multiple_of(10) {
         tracing::error!(
             order_id = %order_id_str,
             user_id = %req.user_id,

example-server/src/modules/products.rs

@@ -204,7 +204,7 @@ async fn cache_warmer() {
         );
 
         // Occasionally report cache pressure
-        if warm_count % 7 == 0 {
+        if warm_count.is_multiple_of(7) {
             tracing::debug!(
                 cache_region = %region,
                 memory_usage_mb = %(simulated_entries / 10),

example-server/src/modules/users.rs

@@ -140,7 +140,7 @@ async fn user_activity_simulator(store: UserStore) {
         );
 
         // Occasionally log suspicious activity
-        if event_id % 17 == 0 {
+        if event_id.is_multiple_of(17) {
             tracing::warn!(
                 user_id = %user.id,
                 username = %user.username,