fix: linter formatting and improve code readability

.codesight/CODESIGHT.md

@@ -264,6 +264,7 @@
   - class CacheEvictionManager
   - function setRedisPrefix
   - function initializeMetrics
+  - function periodicCacheEviction
   - function evictStaleGames
 - `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/FailoverService.scala`
   - class FailoverService
@@ -289,6 +290,7 @@
   - function setRedisPrefix
   - function shouldRebalance
   - function rebalance
+  - function periodicRebalanceCheck
 - `modules/core/src/main/scala/de/nowchess/chess/adapter/RuleSetRestAdapter.scala`
   - class RuleSetRestAdapter
   - function candidateMoves

.codesight/libs.md

@@ -208,6 +208,7 @@
   - class CacheEvictionManager
   - function setRedisPrefix
   - function initializeMetrics
+  - function periodicCacheEviction
   - function evictStaleGames
 - `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/FailoverService.scala`
   - class FailoverService
@@ -233,6 +234,7 @@
   - function setRedisPrefix
   - function shouldRebalance
   - function rebalance
+  - function periodicRebalanceCheck
 - `modules/core/src/main/scala/de/nowchess/chess/adapter/RuleSetRestAdapter.scala`
   - class RuleSetRestAdapter
   - function candidateMoves

modules/coordinator/src/main/scala/de/nowchess/coordinator/service/HealthMonitor.scala

@@ -192,7 +192,11 @@ class HealthMonitor:
               log.debugf("No pod found for instance %s, skipping deletion", instanceId)
         catch
           case ex: Exception =>
-            log.warnf(ex, "Failed to delete pod for instance %s — removing from registry to prevent blocking scale-down", instanceId)
+            log.warnf(
+              ex,
+              "Failed to delete pod for instance %s — removing from registry to prevent blocking scale-down",
+              instanceId,
+            )
             instanceRegistry.removeInstance(instanceId)
 
   private def validateStartupInstances(timeoutMs: Long): Unit =