feat: true-microservices (#40)

Reviewed-on: #40

.codesight/CODESIGHT.md

@@ -2,11 +2,58 @@
 
 > **Stack:** raw-http | none | unknown | scala
 
-> 0 routes | 0 models | 0 components | 63 lib files | 1 env vars | 1 middleware
+> 0 routes + 40 rpc | 0 models | 0 components | 146 lib files | 1 env vars | 1 middleware
 > **Token savings:** this file is ~0 tokens. Without it, AI exploration would cost ~0 tokens. **Saves ~0 tokens per conversation.**
 
 ---
 
+# Routes
+
+## gRPC
+
+- `/CoordinatorService/BatchResubscribeGames` (BatchResubscribeRequest) → BatchResubscribeResponse
+- `/CoordinatorService/UnsubscribeGames` (UnsubscribeGamesRequest) → UnsubscribeGamesResponse
+- `/CoordinatorService/EvictGames` (EvictGamesRequest) → EvictGamesResponse
+- `/CoordinatorService/DrainInstance` (DrainInstanceRequest) → DrainInstanceResponse
+- `/CoordinatorService/BatchResubscribeGames` (BatchResubscribeRequest) → BatchResubscribeResponse
+- `/CoordinatorService/UnsubscribeGames` (UnsubscribeGamesRequest) → UnsubscribeGamesResponse
+- `/CoordinatorService/EvictGames` (EvictGamesRequest) → EvictGamesResponse
+- `/CoordinatorService/DrainInstance` (DrainInstanceRequest) → DrainInstanceResponse
+- `/IoService/ImportFen` (ProtoImportFenRequest) → ProtoGameContext
+- `/IoService/ImportPgn` (ProtoImportPgnRequest) → ProtoGameContext
+- `/IoService/ExportCombined` (ProtoGameContext) → ProtoCombinedExport
+- `/IoService/ExportFen` (ProtoGameContext) → ProtoStringResult
+- `/IoService/ExportPgn` (ProtoGameContext) → ProtoStringResult
+- `/RuleService/CandidateMoves` (ProtoSquareRequest) → ProtoMoveList
+- `/RuleService/LegalMoves` (ProtoSquareRequest) → ProtoMoveList
+- `/RuleService/AllLegalMoves` (ProtoGameContext) → ProtoMoveList
+- `/RuleService/IsCheck` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsCheckmate` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsStalemate` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsInsufficientMaterial` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsFiftyMoveRule` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsThreefoldRepetition` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/ApplyMove` (ProtoMoveRequest) → ProtoGameContext
+- `/RuleService/PostMoveStatus` (ProtoGameContext) → ProtoPostMoveStatus
+- `/IoService/ImportFen` (ProtoImportFenRequest) → ProtoGameContext
+- `/IoService/ImportPgn` (ProtoImportPgnRequest) → ProtoGameContext
+- `/IoService/ExportCombined` (ProtoGameContext) → ProtoCombinedExport
+- `/IoService/ExportFen` (ProtoGameContext) → ProtoStringResult
+- `/IoService/ExportPgn` (ProtoGameContext) → ProtoStringResult
+- `/RuleService/CandidateMoves` (ProtoSquareRequest) → ProtoMoveList
+- `/RuleService/LegalMoves` (ProtoSquareRequest) → ProtoMoveList
+- `/RuleService/AllLegalMoves` (ProtoGameContext) → ProtoMoveList
+- `/RuleService/IsCheck` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsCheckmate` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsStalemate` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsInsufficientMaterial` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsFiftyMoveRule` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsThreefoldRepetition` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/ApplyMove` (ProtoMoveRequest) → ProtoGameContext
+- `/RuleService/PostMoveStatus` (ProtoGameContext) → ProtoPostMoveStatus
+
+---
+
 # Libraries
 
 - `jacoco-reporter/scoverage_coverage_gaps.py`
@@ -25,6 +72,74 @@
   - function main: () -> None
   - class TestCase
   - _...2 more_
+- `modules/account/src/main/scala/de/nowchess/account/client/CoreGameClient.scala` — class CoreGameClient, function createGame
+- `modules/account/src/main/scala/de/nowchess/account/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/account/src/main/scala/de/nowchess/account/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/account/src/main/scala/de/nowchess/account/domain/Challenge.scala`
+  - class Challenge
+  - function gameIdOpt
+  - function declineReasonOpt
+  - function timeControlLimitOpt
+  - function timeControlIncrementOpt
+- `modules/account/src/main/scala/de/nowchess/account/domain/ChallengeColorConverter.scala` — class ChallengeColorConverter
+- `modules/account/src/main/scala/de/nowchess/account/domain/ChallengeStatusConverter.scala` — class ChallengeStatusConverter
+- `modules/account/src/main/scala/de/nowchess/account/domain/DeclineReasonConverter.scala` — class DeclineReasonConverter
+- `modules/account/src/main/scala/de/nowchess/account/domain/TimeControl.scala` — class TimeControl
+- `modules/account/src/main/scala/de/nowchess/account/domain/UserAccount.scala`
+  - class UserAccount
+  - function getBotAccounts
+  - class BotAccount
+  - class OfficialBotAccount
+- `modules/account/src/main/scala/de/nowchess/account/error/AccountError.scala` — function message
+- `modules/account/src/main/scala/de/nowchess/account/error/ChallengeError.scala` — function message
+- `modules/account/src/main/scala/de/nowchess/account/filter/AlreadyLoggedInFilter.scala` — class AlreadyLoggedInFilter
+- `modules/account/src/main/scala/de/nowchess/account/repository/AccountRepository.scala`
+  - class UserAccountRepository
+  - function findByUsername
+  - function findById
+  - function persist
+  - function findByEmail
+  - function findAll
+  - _...12 more_
+- `modules/account/src/main/scala/de/nowchess/account/repository/ChallengeRepository.scala`
+  - class ChallengeRepository
+  - function findActiveByChallengerId
+  - function findActiveByDestUserId
+  - function findDuplicateChallenge
+  - function findById
+  - function persist
+  - _...1 more_
+- `modules/account/src/main/scala/de/nowchess/account/resource/AccountResource.scala`
+  - class AccountResource
+  - function register
+  - function login
+  - function me
+  - function publicProfile
+  - function banUser
+  - _...10 more_
+- `modules/account/src/main/scala/de/nowchess/account/resource/ChallengeResource.scala`
+  - class ChallengeResource
+  - function create
+  - function list
+  - function accept
+  - function decline
+  - function cancel
+- `modules/account/src/main/scala/de/nowchess/account/service/AccountService.scala`
+  - class AccountService
+  - function register
+  - function login
+  - function findByUsername
+  - function findById
+  - function createBotAccount
+  - _...11 more_
+- `modules/account/src/main/scala/de/nowchess/account/service/ChallengeService.scala`
+  - class ChallengeService
+  - function create
+  - function accept
+  - function decline
+  - function cancel
+  - function listForUser
+  - _...1 more_
 - `modules/api/src/main/scala/de/nowchess/api/board/Board.scala`
   - class Board
   - function apply
@@ -54,6 +169,15 @@
 - `modules/api/src/main/scala/de/nowchess/api/dto/ErrorEventDto.scala` — class ErrorEventDto, function apply
 - `modules/api/src/main/scala/de/nowchess/api/dto/GameFullEventDto.scala` — class GameFullEventDto, function apply
 - `modules/api/src/main/scala/de/nowchess/api/dto/GameStateEventDto.scala` — class GameStateEventDto, function apply
+- `modules/api/src/main/scala/de/nowchess/api/error/GameError.scala` — function message
+- `modules/api/src/main/scala/de/nowchess/api/game/ClockState.scala`
+  - function activeColor
+  - function afterMove
+  - function remainingMs
+  - function remainingMs
+  - function afterMove
+  - function remainingMs
+  - _...3 more_
 - `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`
   - function kingSquare
   - function withBoard
@@ -62,11 +186,21 @@
   - function withEnPassantSquare
   - function withHalfMoveClock
   - _...4 more_
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — class GameContextImport, function importGameContext
 - `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — class PlayerId, function apply
 - `modules/api/src/main/scala/de/nowchess/api/response/ApiResponse.scala`
   - class ApiResponse
   - function error
   - function totalPages
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`
+  - class RuleSet
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...6 more_
 - `modules/bot/python/nnue.py`
   - function get_weights_dir: ()
   - function get_data_dir: ()
@@ -171,30 +305,136 @@
   - class ZobristHash
   - function hash
   - function nextHash
-- `modules/core/src/main/scala/de/nowchess/chess/command/Command.scala`
-  - class Command
-  - function execute
-  - function undo
-  - function description
-  - class MoveResult
-- `modules/core/src/main/scala/de/nowchess/chess/command/CommandInvoker.scala`
-  - class CommandInvoker
-  - function execute
-  - function undo
-  - function redo
-  - function history
-  - function getCurrentIndex
-  - _...3 more_
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/CoordinatorApp.scala` — class CoordinatorApp
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/config/BeansProducer.scala`
+  - class BeansProducer
+  - function redissonClient
+  - function kubernetesClient
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/config/CoordinatorConfig.scala`
+  - class CoordinatorConfig
+  - function maxGamesPerCore
+  - function maxDeviationPercent
+  - function rebalanceInterval
+  - function rebalanceMinInterval
+  - function heartbeatTtl
+  - _...11 more_
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/grpc/CoordinatorGrpcServer.scala` — class CoordinatorGrpcServer
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/grpc/CoreGrpcClient.scala`
+  - class CoreGrpcClient
+  - function shutdown
+  - function batchResubscribeGames
+  - function unsubscribeGames
+  - function evictGames
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/resource/CoordinatorResource.scala`
+  - class CoordinatorResource
+  - function listInstances
+  - function getMetrics
+  - function triggerRebalance
+  - function triggerFailover
+  - function triggerScaleUp
+  - _...1 more_
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/AutoScaler.scala`
+  - class AutoScaler
+  - function checkAndScale
+  - function scaleUp
+  - function scaleDown
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/CacheEvictionManager.scala`
+  - class CacheEvictionManager
+  - function setRedisPrefix
+  - function evictStaleGames
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/FailoverService.scala`
+  - class FailoverService
+  - function setRedisPrefix
+  - function onInstanceStreamDropped
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/HealthMonitor.scala`
+  - class HealthMonitor
+  - function setRedisPrefix
+  - function checkInstanceHealth
+  - function watchK8sPods
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/InstanceRegistry.scala`
+  - class InstanceRegistry
+  - function setRedisPrefix
+  - function getInstance
+  - function getAllInstances
+  - function updateInstanceFromRedis
+  - function markInstanceDead
+  - _...1 more_
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/LoadBalancer.scala`
+  - class LoadBalancer
+  - function setRedisPrefix
+  - function shouldRebalance
+  - function rebalance
+- `modules/core/src/main/scala/de/nowchess/chess/adapter/RuleSetRestAdapter.scala`
+  - class RuleSetRestAdapter
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
+- `modules/core/src/main/scala/de/nowchess/chess/client/IoServiceClient.scala`
+  - class IoServiceClient
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+  - function exportCombined
+- `modules/core/src/main/scala/de/nowchess/chess/client/RuleServiceClient.scala`
+  - class RuleServiceClient
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...6 more_
+- `modules/core/src/main/scala/de/nowchess/chess/client/StoreServiceClient.scala` — class StoreServiceClient, function getGame
 - `modules/core/src/main/scala/de/nowchess/chess/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/core/src/main/scala/de/nowchess/chess/config/RedisConfig.scala` — class RedisConfig
+- `modules/core/src/main/scala/de/nowchess/chess/config/RedissonProducer.scala`
+  - class RedissonProducer
+  - function produceRedissonClient
+  - function shutdown
 - `modules/core/src/main/scala/de/nowchess/chess/controller/Parser.scala` — class Parser, function parseMove
 - `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`
   - class GameEngine
   - function board
   - function turn
   - function context
-  - function canUndo
-  - function canRedo
-  - _...11 more_
+  - function pendingDrawOfferBy
+  - function currentClockState
+  - _...22 more_
+- `modules/core/src/main/scala/de/nowchess/chess/exception/ApiException.scala`
+  - class ApiException
+  - class GameNotFoundException
+  - class BadRequestException
+- `modules/core/src/main/scala/de/nowchess/chess/exception/ApiExceptionMapper.scala` — class ApiExceptionMapper, function toResponse
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/CoordinatorServiceHandler.scala` — class CoordinatorServiceHandler
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/CoreProtoMapper.scala`
+  - class CoreProtoMapper
+  - function toProtoColor
+  - function fromProtoColor
+  - function toProtoPieceType
+  - function fromProtoPieceType
+  - function toProtoMoveKind
+  - _...9 more_
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/IoGrpcClientWrapper.scala`
+  - class IoGrpcClientWrapper
+  - function exportCombined
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/RuleSetGrpcAdapter.scala`
+  - class RuleSetGrpcAdapter
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
 - `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala`
   - function context
   - class Observer
@@ -203,28 +443,52 @@
   - function subscribe
   - function unsubscribe
   - _...1 more_
+- `modules/core/src/main/scala/de/nowchess/chess/redis/C2sMessage.scala` — class C2sMessage
+- `modules/core/src/main/scala/de/nowchess/chess/redis/GameRedisPublisher.scala` — class GameRedisPublisher, function onGameEvent
+- `modules/core/src/main/scala/de/nowchess/chess/redis/GameRedisSubscriberManager.scala`
+  - class GameRedisSubscriberManager
+  - function subscribeGame
+  - function onMessage
+  - function unsubscribeGame
+  - function batchResubscribeGames
+  - function unsubscribeGames
+  - _...3 more_
 - `modules/core/src/main/scala/de/nowchess/chess/registry/GameRegistry.scala`
   - class GameRegistry
   - function store
   - function get
   - function update
   - function generateId
-- `modules/core/src/main/scala/de/nowchess/chess/registry/GameRegistryImpl.scala`
-  - class GameRegistryImpl
+- `modules/core/src/main/scala/de/nowchess/chess/registry/RedisGameRegistry.scala`
+  - class RedisGameRegistry
+  - function generateId
   - function store
   - function get
   - function update
-  - function generateId
+- `modules/core/src/main/scala/de/nowchess/chess/resource/GameDtoMapper.scala`
+  - class GameDtoMapper
+  - function statusOf
+  - function moveToUci
+  - function toPlayerDto
+  - function toClockDto
+  - function toGameStateDto
+  - _...1 more_
 - `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala`
+  - class GameResource
   - function onGameEvent
   - function createGame
   - function getGame
-  - function streamGame
-  - function onGameEvent
   - function resignGame
+  - function makeMove
   - _...9 more_
-- `modules/io/src/main/scala/de/nowchess/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
-- `modules/io/src/main/scala/de/nowchess/io/GameContextImport.scala` — class GameContextImport, function importGameContext
+- `modules/core/src/main/scala/de/nowchess/chess/service/InstanceHeartbeatService.scala`
+  - class InstanceHeartbeatService
+  - function onStart
+  - function onShutdown
+  - function setRedisPrefix
+  - function setSubscriptionCount
+  - function setLocalCacheSize
+  - _...2 more_
 - `modules/io/src/main/scala/de/nowchess/io/GameFileService.scala`
   - class GameFileService
   - function saveGameToFile
@@ -253,6 +517,15 @@
   - function parseBoard
   - function importGameContext
 - `modules/io/src/main/scala/de/nowchess/io/fen/FenParserSupport.scala` — function buildSquares
+- `modules/io/src/main/scala/de/nowchess/io/grpc/IoGrpcService.scala` — class IoGrpcService
+- `modules/io/src/main/scala/de/nowchess/io/grpc/IoProtoMapper.scala`
+  - class IoProtoMapper
+  - function toProtoColor
+  - function fromProtoColor
+  - function toProtoPieceType
+  - function fromProtoPieceType
+  - function toProtoMoveKind
+  - _...9 more_
 - `modules/io/src/main/scala/de/nowchess/io/json/JsonExporter.scala` — class JsonExporter, function exportGameContext
 - `modules/io/src/main/scala/de/nowchess/io/json/JsonParser.scala` — class JsonParser, function importGameContext
 - `modules/io/src/main/scala/de/nowchess/io/pgn/PgnExporter.scala`
@@ -265,20 +538,76 @@
   - function importGameContext
   - function parsePgn
   - function parseAlgebraicMove
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala`
-  - class RuleSet
+- `modules/io/src/main/scala/de/nowchess/io/service/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/io/src/main/scala/de/nowchess/io/service/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/io/src/main/scala/de/nowchess/io/service/resource/IoResource.scala`
+  - class IoResource
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+  - function exportCombined
+- `modules/json/src/main/scala/de/nowchess/json/ChessJacksonModule.scala` — class ChessJacksonModule
+- `modules/json/src/main/scala/de/nowchess/json/GameResultDeserializer.scala` — class GameResultDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/GameResultSerializer.scala` — class GameResultSerializer
+- `modules/json/src/main/scala/de/nowchess/json/MoveTypeDeserializer.scala` — class MoveTypeDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/MoveTypeSerializer.scala` — class MoveTypeSerializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareDeserializer.scala` — class SquareDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareKeySerializer.scala` — class SquareKeySerializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareSerializer.scala` — class SquareSerializer
+- `modules/rule/src/main/scala/de/nowchess/rules/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/rule/src/main/scala/de/nowchess/rules/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/rule/src/main/scala/de/nowchess/rules/grpc/ProtoMapper.scala`
+  - class ProtoMapper
+  - function toProtoColor
+  - function fromProtoColor
+  - function toProtoPieceType
+  - function fromProtoPieceType
+  - function toProtoMoveKind
+  - _...9 more_
+- `modules/rule/src/main/scala/de/nowchess/rules/grpc/RuleGrpcService.scala` — class RuleGrpcService
+- `modules/rule/src/main/scala/de/nowchess/rules/resource/RuleSetResource.scala`
+  - class RuleSetResource
   - function candidateMoves
   - function legalMoves
   - function allLegalMoves
   - function isCheck
   - function isCheckmate
-  - _...5 more_
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala`
-  - class DefaultRules
-  - function positionOf
-  - function loop
-  - function toMoves
-  - function loop
+  - _...6 more_
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — class DefaultRules, function positionOf
+- `modules/store/src/main/scala/de/nowchess/store/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/store/src/main/scala/de/nowchess/store/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/store/src/main/scala/de/nowchess/store/config/RedisConfig.scala` — class RedisConfig
+- `modules/store/src/main/scala/de/nowchess/store/config/RedissonProducer.scala`
+  - class RedissonProducer
+  - function redissonClient
+  - function close
+- `modules/store/src/main/scala/de/nowchess/store/domain/GameRecord.scala` — class GameRecord
+- `modules/store/src/main/scala/de/nowchess/store/redis/GameWritebackStreamListener.scala`
+  - class GameWritebackStreamListener
+  - function startListening
+  - function onMessage
+- `modules/store/src/main/scala/de/nowchess/store/repository/GameRecordRepository.scala`
+  - class GameRecordRepository
+  - function findByGameId
+  - function persist
+  - function merge
+- `modules/store/src/main/scala/de/nowchess/store/resource/StoreGameResource.scala` — class StoreGameResource, function getGame
+- `modules/store/src/main/scala/de/nowchess/store/service/GameWritebackService.scala` — class GameWritebackService, function writeBack
+- `modules/ws/src/main/scala/de/nowchess/ws/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/ws/src/main/scala/de/nowchess/ws/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/ws/src/main/scala/de/nowchess/ws/config/RedisConfig.scala` — class RedisConfig
+- `modules/ws/src/main/scala/de/nowchess/ws/config/RedissonProducer.scala`
+  - class RedissonProducer
+  - function produceRedissonClient
+  - function shutdown
+- `modules/ws/src/main/scala/de/nowchess/ws/resource/GameWebSocketResource.scala`
+  - class GameWebSocketResource
+  - function onOpen
+  - function onMessage
+  - function onTextMessage
+  - function onClose
 
 ---
 
@@ -301,39 +630,39 @@
 
 ## Most Imported Files (change these carefully)
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` — imported by **64** files
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **44** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **40** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **35** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` — imported by **19** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **18** files
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` — imported by **17** files
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **17** files
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala` — imported by **11** files
-- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` — imported by **10** files
-- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` — imported by **9** files
-- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **7** files
-- `modules/io/src/main/scala/de/nowchess/io/GameContextImport.scala` — imported by **7** files
+- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` — imported by **76** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **57** files
+- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **55** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **47** files
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **28** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` — imported by **20** files
+- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` — imported by **20** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **20** files
+- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **18** files
+- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **18** files
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` — imported by **14** files
+- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` — imported by **13** files
+- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` — imported by **11** files
+- `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — imported by **9** files
+- `modules/api/src/main/scala/de/nowchess/api/error/GameError.scala` — imported by **9** files
+- `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala` — imported by **9** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — imported by **8** files
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/IoGrpcClientWrapper.scala` — imported by **7** files
+- `modules/api/src/main/scala/de/nowchess/api/game/GameMode.scala` — imported by **6** files
 - `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala` — imported by **6** files
-- `modules/bot/src/main/scala/de/nowchess/bot/ai/Evaluation.scala` — imported by **6** files
-- `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — imported by **5** files
-- `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotBook.scala` — imported by **5** files
-- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **4** files
-- `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala` — imported by **4** files
-- `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala` — imported by **4** files
 
 ## Import Map (who imports what)
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala`, `modules/bot/src/main/scala/de/nowchess/bot/ai/Evaluation.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala` +59 more
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/board/BoardTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala` +39 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/move/Move.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/move/MoveTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala` +35 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala` +30 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +14 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotHash.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/ZobristHash.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +13 more
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala` +12 more
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +12 more
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +6 more
-- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` ← `modules/bot/src/test/scala/de/nowchess/bot/PolyglotHashTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/EngineTestHelpers.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineLoadGameTest.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineNotationTest.scala` +5 more
+- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala` +71 more
+- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/move/Move.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/move/MoveTest.scala` +52 more
+- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/api/src/test/scala/de/nowchess/api/board/BoardTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala` +50 more
+- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/ClockState.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala`, `modules/api/src/test/scala/de/nowchess/api/game/ClockStateTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala` +42 more
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +23 more
+- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +15 more
+- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala` +15 more
+- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotHash.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/ZobristHash.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +15 more
+- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` ← `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala`, `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`, `modules/core/src/main/scala/de/nowchess/chess/grpc/CoreProtoMapper.scala`, `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala` +13 more
+- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` ← `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala`, `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`, `modules/core/src/main/scala/de/nowchess/chess/grpc/CoreProtoMapper.scala`, `modules/core/src/main/scala/de/nowchess/chess/resource/GameDtoMapper.scala` +13 more
 
 ---
 

.codesight/graph.md

@@ -2,36 +2,36 @@
 
 ## Most Imported Files (change these carefully)
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` — imported by **64** files
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **44** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **40** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **35** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` — imported by **19** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **18** files
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` — imported by **17** files
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **17** files
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala` — imported by **11** files
-- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` — imported by **10** files
-- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` — imported by **9** files
-- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **7** files
-- `modules/io/src/main/scala/de/nowchess/io/GameContextImport.scala` — imported by **7** files
+- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` — imported by **76** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **57** files
+- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **55** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **47** files
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **28** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` — imported by **20** files
+- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` — imported by **20** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **20** files
+- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` — imported by **18** files
+- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **18** files
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala` — imported by **14** files
+- `modules/api/src/main/scala/de/nowchess/api/board/CastlingRights.scala` — imported by **13** files
+- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` — imported by **11** files
+- `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — imported by **9** files
+- `modules/api/src/main/scala/de/nowchess/api/error/GameError.scala` — imported by **9** files
+- `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala` — imported by **9** files
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — imported by **8** files
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/IoGrpcClientWrapper.scala` — imported by **7** files
+- `modules/api/src/main/scala/de/nowchess/api/game/GameMode.scala` — imported by **6** files
 - `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala` — imported by **6** files
-- `modules/bot/src/main/scala/de/nowchess/bot/ai/Evaluation.scala` — imported by **6** files
-- `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — imported by **5** files
-- `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotBook.scala` — imported by **5** files
-- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` — imported by **4** files
-- `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala` — imported by **4** files
-- `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala` — imported by **4** files
 
 ## Import Map (who imports what)
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala`, `modules/bot/src/main/scala/de/nowchess/bot/ai/Evaluation.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala` +59 more
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/board/BoardTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala` +39 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/move/Move.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/move/MoveTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala` +35 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala` +30 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +14 more
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotHash.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/ZobristHash.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +13 more
-- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala` +12 more
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +12 more
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +6 more
-- `modules/io/src/main/scala/de/nowchess/io/fen/FenParser.scala` ← `modules/bot/src/test/scala/de/nowchess/bot/PolyglotHashTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/EngineTestHelpers.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineLoadGameTest.scala`, `modules/core/src/test/scala/de/nowchess/chess/engine/GameEngineNotationTest.scala` +5 more
+- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala`, `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/bot/src/main/scala/de/nowchess/bot/BotMoveRepetition.scala` +71 more
+- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/move/Move.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/api/src/test/scala/de/nowchess/api/move/MoveTest.scala` +52 more
+- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` ← `modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`, `modules/api/src/test/scala/de/nowchess/api/board/BoardTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala` +50 more
+- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/ClockState.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala`, `modules/api/src/test/scala/de/nowchess/api/game/ClockStateTest.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala` +42 more
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/ClassicalBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/HybridBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/NNUEBot.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +23 more
+- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +15 more
+- `modules/api/src/main/scala/de/nowchess/api/board/PieceType.scala` ← `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/classic/EvaluationClassic.scala`, `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/AlphaBetaSearch.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala` +15 more
+- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` ← `modules/bot/src/main/scala/de/nowchess/bot/bots/nnue/NNUE.scala`, `modules/bot/src/main/scala/de/nowchess/bot/logic/MoveOrdering.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/PolyglotHash.scala`, `modules/bot/src/main/scala/de/nowchess/bot/util/ZobristHash.scala`, `modules/bot/src/test/scala/de/nowchess/bot/AlphaBetaSearchTest.scala` +15 more
+- `modules/api/src/main/scala/de/nowchess/api/game/DrawReason.scala` ← `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala`, `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`, `modules/core/src/main/scala/de/nowchess/chess/grpc/CoreProtoMapper.scala`, `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala` +13 more
+- `modules/api/src/main/scala/de/nowchess/api/game/GameResult.scala` ← `modules/api/src/test/scala/de/nowchess/api/game/GameContextTest.scala`, `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala`, `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`, `modules/core/src/main/scala/de/nowchess/chess/grpc/CoreProtoMapper.scala`, `modules/core/src/main/scala/de/nowchess/chess/resource/GameDtoMapper.scala` +13 more

.codesight/libs.md

@@ -16,6 +16,74 @@
   - function main: () -> None
   - class TestCase
   - _...2 more_
+- `modules/account/src/main/scala/de/nowchess/account/client/CoreGameClient.scala` — class CoreGameClient, function createGame
+- `modules/account/src/main/scala/de/nowchess/account/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/account/src/main/scala/de/nowchess/account/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/account/src/main/scala/de/nowchess/account/domain/Challenge.scala`
+  - class Challenge
+  - function gameIdOpt
+  - function declineReasonOpt
+  - function timeControlLimitOpt
+  - function timeControlIncrementOpt
+- `modules/account/src/main/scala/de/nowchess/account/domain/ChallengeColorConverter.scala` — class ChallengeColorConverter
+- `modules/account/src/main/scala/de/nowchess/account/domain/ChallengeStatusConverter.scala` — class ChallengeStatusConverter
+- `modules/account/src/main/scala/de/nowchess/account/domain/DeclineReasonConverter.scala` — class DeclineReasonConverter
+- `modules/account/src/main/scala/de/nowchess/account/domain/TimeControl.scala` — class TimeControl
+- `modules/account/src/main/scala/de/nowchess/account/domain/UserAccount.scala`
+  - class UserAccount
+  - function getBotAccounts
+  - class BotAccount
+  - class OfficialBotAccount
+- `modules/account/src/main/scala/de/nowchess/account/error/AccountError.scala` — function message
+- `modules/account/src/main/scala/de/nowchess/account/error/ChallengeError.scala` — function message
+- `modules/account/src/main/scala/de/nowchess/account/filter/AlreadyLoggedInFilter.scala` — class AlreadyLoggedInFilter
+- `modules/account/src/main/scala/de/nowchess/account/repository/AccountRepository.scala`
+  - class UserAccountRepository
+  - function findByUsername
+  - function findById
+  - function persist
+  - function findByEmail
+  - function findAll
+  - _...12 more_
+- `modules/account/src/main/scala/de/nowchess/account/repository/ChallengeRepository.scala`
+  - class ChallengeRepository
+  - function findActiveByChallengerId
+  - function findActiveByDestUserId
+  - function findDuplicateChallenge
+  - function findById
+  - function persist
+  - _...1 more_
+- `modules/account/src/main/scala/de/nowchess/account/resource/AccountResource.scala`
+  - class AccountResource
+  - function register
+  - function login
+  - function me
+  - function publicProfile
+  - function banUser
+  - _...10 more_
+- `modules/account/src/main/scala/de/nowchess/account/resource/ChallengeResource.scala`
+  - class ChallengeResource
+  - function create
+  - function list
+  - function accept
+  - function decline
+  - function cancel
+- `modules/account/src/main/scala/de/nowchess/account/service/AccountService.scala`
+  - class AccountService
+  - function register
+  - function login
+  - function findByUsername
+  - function findById
+  - function createBotAccount
+  - _...11 more_
+- `modules/account/src/main/scala/de/nowchess/account/service/ChallengeService.scala`
+  - class ChallengeService
+  - function create
+  - function accept
+  - function decline
+  - function cancel
+  - function listForUser
+  - _...1 more_
 - `modules/api/src/main/scala/de/nowchess/api/board/Board.scala`
   - class Board
   - function apply
@@ -45,6 +113,15 @@
 - `modules/api/src/main/scala/de/nowchess/api/dto/ErrorEventDto.scala` — class ErrorEventDto, function apply
 - `modules/api/src/main/scala/de/nowchess/api/dto/GameFullEventDto.scala` — class GameFullEventDto, function apply
 - `modules/api/src/main/scala/de/nowchess/api/dto/GameStateEventDto.scala` — class GameStateEventDto, function apply
+- `modules/api/src/main/scala/de/nowchess/api/error/GameError.scala` — function message
+- `modules/api/src/main/scala/de/nowchess/api/game/ClockState.scala`
+  - function activeColor
+  - function afterMove
+  - function remainingMs
+  - function remainingMs
+  - function afterMove
+  - function remainingMs
+  - _...3 more_
 - `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala`
   - function kingSquare
   - function withBoard
@@ -53,11 +130,21 @@
   - function withEnPassantSquare
   - function withHalfMoveClock
   - _...4 more_
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
+- `modules/api/src/main/scala/de/nowchess/api/io/GameContextImport.scala` — class GameContextImport, function importGameContext
 - `modules/api/src/main/scala/de/nowchess/api/player/PlayerInfo.scala` — class PlayerId, function apply
 - `modules/api/src/main/scala/de/nowchess/api/response/ApiResponse.scala`
   - class ApiResponse
   - function error
   - function totalPages
+- `modules/api/src/main/scala/de/nowchess/api/rules/RuleSet.scala`
+  - class RuleSet
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...6 more_
 - `modules/bot/python/nnue.py`
   - function get_weights_dir: ()
   - function get_data_dir: ()
@@ -162,30 +249,136 @@
   - class ZobristHash
   - function hash
   - function nextHash
-- `modules/core/src/main/scala/de/nowchess/chess/command/Command.scala`
-  - class Command
-  - function execute
-  - function undo
-  - function description
-  - class MoveResult
-- `modules/core/src/main/scala/de/nowchess/chess/command/CommandInvoker.scala`
-  - class CommandInvoker
-  - function execute
-  - function undo
-  - function redo
-  - function history
-  - function getCurrentIndex
-  - _...3 more_
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/CoordinatorApp.scala` — class CoordinatorApp
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/config/BeansProducer.scala`
+  - class BeansProducer
+  - function redissonClient
+  - function kubernetesClient
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/config/CoordinatorConfig.scala`
+  - class CoordinatorConfig
+  - function maxGamesPerCore
+  - function maxDeviationPercent
+  - function rebalanceInterval
+  - function rebalanceMinInterval
+  - function heartbeatTtl
+  - _...11 more_
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/grpc/CoordinatorGrpcServer.scala` — class CoordinatorGrpcServer
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/grpc/CoreGrpcClient.scala`
+  - class CoreGrpcClient
+  - function shutdown
+  - function batchResubscribeGames
+  - function unsubscribeGames
+  - function evictGames
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/resource/CoordinatorResource.scala`
+  - class CoordinatorResource
+  - function listInstances
+  - function getMetrics
+  - function triggerRebalance
+  - function triggerFailover
+  - function triggerScaleUp
+  - _...1 more_
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/AutoScaler.scala`
+  - class AutoScaler
+  - function checkAndScale
+  - function scaleUp
+  - function scaleDown
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/CacheEvictionManager.scala`
+  - class CacheEvictionManager
+  - function setRedisPrefix
+  - function evictStaleGames
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/FailoverService.scala`
+  - class FailoverService
+  - function setRedisPrefix
+  - function onInstanceStreamDropped
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/HealthMonitor.scala`
+  - class HealthMonitor
+  - function setRedisPrefix
+  - function checkInstanceHealth
+  - function watchK8sPods
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/InstanceRegistry.scala`
+  - class InstanceRegistry
+  - function setRedisPrefix
+  - function getInstance
+  - function getAllInstances
+  - function updateInstanceFromRedis
+  - function markInstanceDead
+  - _...1 more_
+- `modules/coordinator/src/main/scala/de/nowchess/coordinator/service/LoadBalancer.scala`
+  - class LoadBalancer
+  - function setRedisPrefix
+  - function shouldRebalance
+  - function rebalance
+- `modules/core/src/main/scala/de/nowchess/chess/adapter/RuleSetRestAdapter.scala`
+  - class RuleSetRestAdapter
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
+- `modules/core/src/main/scala/de/nowchess/chess/client/IoServiceClient.scala`
+  - class IoServiceClient
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+  - function exportCombined
+- `modules/core/src/main/scala/de/nowchess/chess/client/RuleServiceClient.scala`
+  - class RuleServiceClient
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...6 more_
+- `modules/core/src/main/scala/de/nowchess/chess/client/StoreServiceClient.scala` — class StoreServiceClient, function getGame
 - `modules/core/src/main/scala/de/nowchess/chess/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/core/src/main/scala/de/nowchess/chess/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/core/src/main/scala/de/nowchess/chess/config/RedisConfig.scala` — class RedisConfig
+- `modules/core/src/main/scala/de/nowchess/chess/config/RedissonProducer.scala`
+  - class RedissonProducer
+  - function produceRedissonClient
+  - function shutdown
 - `modules/core/src/main/scala/de/nowchess/chess/controller/Parser.scala` — class Parser, function parseMove
 - `modules/core/src/main/scala/de/nowchess/chess/engine/GameEngine.scala`
   - class GameEngine
   - function board
   - function turn
   - function context
-  - function canUndo
-  - function canRedo
-  - _...11 more_
+  - function pendingDrawOfferBy
+  - function currentClockState
+  - _...22 more_
+- `modules/core/src/main/scala/de/nowchess/chess/exception/ApiException.scala`
+  - class ApiException
+  - class GameNotFoundException
+  - class BadRequestException
+- `modules/core/src/main/scala/de/nowchess/chess/exception/ApiExceptionMapper.scala` — class ApiExceptionMapper, function toResponse
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/CoordinatorServiceHandler.scala` — class CoordinatorServiceHandler
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/CoreProtoMapper.scala`
+  - class CoreProtoMapper
+  - function toProtoColor
+  - function fromProtoColor
+  - function toProtoPieceType
+  - function fromProtoPieceType
+  - function toProtoMoveKind
+  - _...9 more_
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/IoGrpcClientWrapper.scala`
+  - class IoGrpcClientWrapper
+  - function exportCombined
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+- `modules/core/src/main/scala/de/nowchess/chess/grpc/RuleSetGrpcAdapter.scala`
+  - class RuleSetGrpcAdapter
+  - function candidateMoves
+  - function legalMoves
+  - function allLegalMoves
+  - function isCheck
+  - function isCheckmate
+  - _...5 more_
 - `modules/core/src/main/scala/de/nowchess/chess/observer/Observer.scala`
   - function context
   - class Observer
@@ -194,28 +387,52 @@
   - function subscribe
   - function unsubscribe
   - _...1 more_
+- `modules/core/src/main/scala/de/nowchess/chess/redis/C2sMessage.scala` — class C2sMessage
+- `modules/core/src/main/scala/de/nowchess/chess/redis/GameRedisPublisher.scala` — class GameRedisPublisher, function onGameEvent
+- `modules/core/src/main/scala/de/nowchess/chess/redis/GameRedisSubscriberManager.scala`
+  - class GameRedisSubscriberManager
+  - function subscribeGame
+  - function onMessage
+  - function unsubscribeGame
+  - function batchResubscribeGames
+  - function unsubscribeGames
+  - _...3 more_
 - `modules/core/src/main/scala/de/nowchess/chess/registry/GameRegistry.scala`
   - class GameRegistry
   - function store
   - function get
   - function update
   - function generateId
-- `modules/core/src/main/scala/de/nowchess/chess/registry/GameRegistryImpl.scala`
-  - class GameRegistryImpl
+- `modules/core/src/main/scala/de/nowchess/chess/registry/RedisGameRegistry.scala`
+  - class RedisGameRegistry
+  - function generateId
   - function store
   - function get
   - function update
-  - function generateId
+- `modules/core/src/main/scala/de/nowchess/chess/resource/GameDtoMapper.scala`
+  - class GameDtoMapper
+  - function statusOf
+  - function moveToUci
+  - function toPlayerDto
+  - function toClockDto
+  - function toGameStateDto
+  - _...1 more_
 - `modules/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala`
+  - class GameResource
   - function onGameEvent
   - function createGame
   - function getGame
-  - function streamGame
-  - function onGameEvent
   - function resignGame
+  - function makeMove
   - _...9 more_
-- `modules/io/src/main/scala/de/nowchess/io/GameContextExport.scala` — class GameContextExport, function exportGameContext
-- `modules/io/src/main/scala/de/nowchess/io/GameContextImport.scala` — class GameContextImport, function importGameContext
+- `modules/core/src/main/scala/de/nowchess/chess/service/InstanceHeartbeatService.scala`
+  - class InstanceHeartbeatService
+  - function onStart
+  - function onShutdown
+  - function setRedisPrefix
+  - function setSubscriptionCount
+  - function setLocalCacheSize
+  - _...2 more_
 - `modules/io/src/main/scala/de/nowchess/io/GameFileService.scala`
   - class GameFileService
   - function saveGameToFile
@@ -244,6 +461,15 @@
   - function parseBoard
   - function importGameContext
 - `modules/io/src/main/scala/de/nowchess/io/fen/FenParserSupport.scala` — function buildSquares
+- `modules/io/src/main/scala/de/nowchess/io/grpc/IoGrpcService.scala` — class IoGrpcService
+- `modules/io/src/main/scala/de/nowchess/io/grpc/IoProtoMapper.scala`
+  - class IoProtoMapper
+  - function toProtoColor
+  - function fromProtoColor
+  - function toProtoPieceType
+  - function fromProtoPieceType
+  - function toProtoMoveKind
+  - _...9 more_
 - `modules/io/src/main/scala/de/nowchess/io/json/JsonExporter.scala` — class JsonExporter, function exportGameContext
 - `modules/io/src/main/scala/de/nowchess/io/json/JsonParser.scala` — class JsonParser, function importGameContext
 - `modules/io/src/main/scala/de/nowchess/io/pgn/PgnExporter.scala`
@@ -256,17 +482,73 @@
   - function importGameContext
   - function parsePgn
   - function parseAlgebraicMove
-- `modules/rule/src/main/scala/de/nowchess/rules/RuleSet.scala`
-  - class RuleSet
+- `modules/io/src/main/scala/de/nowchess/io/service/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/io/src/main/scala/de/nowchess/io/service/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/io/src/main/scala/de/nowchess/io/service/resource/IoResource.scala`
+  - class IoResource
+  - function importFen
+  - function importPgn
+  - function exportFen
+  - function exportPgn
+  - function exportCombined
+- `modules/json/src/main/scala/de/nowchess/json/ChessJacksonModule.scala` — class ChessJacksonModule
+- `modules/json/src/main/scala/de/nowchess/json/GameResultDeserializer.scala` — class GameResultDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/GameResultSerializer.scala` — class GameResultSerializer
+- `modules/json/src/main/scala/de/nowchess/json/MoveTypeDeserializer.scala` — class MoveTypeDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/MoveTypeSerializer.scala` — class MoveTypeSerializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareDeserializer.scala` — class SquareDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareKeyDeserializer.scala` — class SquareKeyDeserializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareKeySerializer.scala` — class SquareKeySerializer
+- `modules/json/src/main/scala/de/nowchess/json/SquareSerializer.scala` — class SquareSerializer
+- `modules/rule/src/main/scala/de/nowchess/rules/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/rule/src/main/scala/de/nowchess/rules/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/rule/src/main/scala/de/nowchess/rules/grpc/ProtoMapper.scala`
+  - class ProtoMapper
+  - function toProtoColor
+  - function fromProtoColor
+  - function toProtoPieceType
+  - function fromProtoPieceType
+  - function toProtoMoveKind
+  - _...9 more_
+- `modules/rule/src/main/scala/de/nowchess/rules/grpc/RuleGrpcService.scala` — class RuleGrpcService
+- `modules/rule/src/main/scala/de/nowchess/rules/resource/RuleSetResource.scala`
+  - class RuleSetResource
   - function candidateMoves
   - function legalMoves
   - function allLegalMoves
   - function isCheck
   - function isCheckmate
-  - _...5 more_
-- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala`
-  - class DefaultRules
-  - function positionOf
-  - function loop
-  - function toMoves
-  - function loop
+  - _...6 more_
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — class DefaultRules, function positionOf
+- `modules/store/src/main/scala/de/nowchess/store/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/store/src/main/scala/de/nowchess/store/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/store/src/main/scala/de/nowchess/store/config/RedisConfig.scala` — class RedisConfig
+- `modules/store/src/main/scala/de/nowchess/store/config/RedissonProducer.scala`
+  - class RedissonProducer
+  - function redissonClient
+  - function close
+- `modules/store/src/main/scala/de/nowchess/store/domain/GameRecord.scala` — class GameRecord
+- `modules/store/src/main/scala/de/nowchess/store/redis/GameWritebackStreamListener.scala`
+  - class GameWritebackStreamListener
+  - function startListening
+  - function onMessage
+- `modules/store/src/main/scala/de/nowchess/store/repository/GameRecordRepository.scala`
+  - class GameRecordRepository
+  - function findByGameId
+  - function persist
+  - function merge
+- `modules/store/src/main/scala/de/nowchess/store/resource/StoreGameResource.scala` — class StoreGameResource, function getGame
+- `modules/store/src/main/scala/de/nowchess/store/service/GameWritebackService.scala` — class GameWritebackService, function writeBack
+- `modules/ws/src/main/scala/de/nowchess/ws/config/JacksonConfig.scala` — class JacksonConfig, function customize
+- `modules/ws/src/main/scala/de/nowchess/ws/config/NativeReflectionConfig.scala` — class NativeReflectionConfig
+- `modules/ws/src/main/scala/de/nowchess/ws/config/RedisConfig.scala` — class RedisConfig
+- `modules/ws/src/main/scala/de/nowchess/ws/config/RedissonProducer.scala`
+  - class RedissonProducer
+  - function produceRedissonClient
+  - function shutdown
+- `modules/ws/src/main/scala/de/nowchess/ws/resource/GameWebSocketResource.scala`
+  - class GameWebSocketResource
+  - function onOpen
+  - function onMessage
+  - function onTextMessage
+  - function onClose

.codesight/routes.md

@@ -0,0 +1,44 @@
+# Routes
+
+## gRPC
+
+- `/CoordinatorService/BatchResubscribeGames` (BatchResubscribeRequest) → BatchResubscribeResponse
+- `/CoordinatorService/UnsubscribeGames` (UnsubscribeGamesRequest) → UnsubscribeGamesResponse
+- `/CoordinatorService/EvictGames` (EvictGamesRequest) → EvictGamesResponse
+- `/CoordinatorService/DrainInstance` (DrainInstanceRequest) → DrainInstanceResponse
+- `/CoordinatorService/BatchResubscribeGames` (BatchResubscribeRequest) → BatchResubscribeResponse
+- `/CoordinatorService/UnsubscribeGames` (UnsubscribeGamesRequest) → UnsubscribeGamesResponse
+- `/CoordinatorService/EvictGames` (EvictGamesRequest) → EvictGamesResponse
+- `/CoordinatorService/DrainInstance` (DrainInstanceRequest) → DrainInstanceResponse
+- `/IoService/ImportFen` (ProtoImportFenRequest) → ProtoGameContext
+- `/IoService/ImportPgn` (ProtoImportPgnRequest) → ProtoGameContext
+- `/IoService/ExportCombined` (ProtoGameContext) → ProtoCombinedExport
+- `/IoService/ExportFen` (ProtoGameContext) → ProtoStringResult
+- `/IoService/ExportPgn` (ProtoGameContext) → ProtoStringResult
+- `/RuleService/CandidateMoves` (ProtoSquareRequest) → ProtoMoveList
+- `/RuleService/LegalMoves` (ProtoSquareRequest) → ProtoMoveList
+- `/RuleService/AllLegalMoves` (ProtoGameContext) → ProtoMoveList
+- `/RuleService/IsCheck` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsCheckmate` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsStalemate` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsInsufficientMaterial` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsFiftyMoveRule` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsThreefoldRepetition` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/ApplyMove` (ProtoMoveRequest) → ProtoGameContext
+- `/RuleService/PostMoveStatus` (ProtoGameContext) → ProtoPostMoveStatus
+- `/IoService/ImportFen` (ProtoImportFenRequest) → ProtoGameContext
+- `/IoService/ImportPgn` (ProtoImportPgnRequest) → ProtoGameContext
+- `/IoService/ExportCombined` (ProtoGameContext) → ProtoCombinedExport
+- `/IoService/ExportFen` (ProtoGameContext) → ProtoStringResult
+- `/IoService/ExportPgn` (ProtoGameContext) → ProtoStringResult
+- `/RuleService/CandidateMoves` (ProtoSquareRequest) → ProtoMoveList
+- `/RuleService/LegalMoves` (ProtoSquareRequest) → ProtoMoveList
+- `/RuleService/AllLegalMoves` (ProtoGameContext) → ProtoMoveList
+- `/RuleService/IsCheck` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsCheckmate` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsStalemate` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsInsufficientMaterial` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsFiftyMoveRule` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/IsThreefoldRepetition` (ProtoGameContext) → ProtoBoolResult
+- `/RuleService/ApplyMove` (ProtoMoveRequest) → ProtoGameContext
+- `/RuleService/PostMoveStatus` (ProtoGameContext) → ProtoPostMoveStatus

.codesight/wiki/index.md

@@ -1,6 +1,6 @@
 # NowChessSystems — Wiki
 
-_Generated 2026-04-12 — re-run `npx codesight --wiki` if the codebase has changed._
+_Generated 2026-04-23 — re-run `npx codesight --wiki` if the codebase has changed._
 
 Structural map compiled from source code via AST. No LLM — deterministic, 200ms.
 
@@ -15,7 +15,7 @@ Structural map compiled from source code via AST. No LLM — deterministic, 200m
 - Routes: **0**
 - Models: **0**
 - Components: **0**
-- Env vars: **0** required, **0** with defaults
+- Env vars: **1** required, **0** with defaults
 
 ## How to Use
 
@@ -41,4 +41,4 @@ These exist in your codebase but are **not** reflected in wiki articles:
 When in doubt, search the source. The wiki is a starting point, not a complete inventory.
 
 ---
-_Last compiled: 2026-04-12 · 2 articles · [codesight](https://github.com/Houseofmvps/codesight)_
+_Last compiled: 2026-04-23 · 2 articles · [codesight](https://github.com/Houseofmvps/codesight)_

.codesight/wiki/log.md

@@ -3,3 +3,5 @@
 History of `npx codesight --wiki` runs. Capped at 20 entries.
 
 ## [2026-04-12 14:34:19] scan | 0 routes, 0 models, 0 components → 2 articles
+
+## [2026-04-23 11:41:43] scan | 0 routes, 0 models, 0 components → 2 articles

.codesight/wiki/overview.md

@@ -4,16 +4,24 @@
 
 **NowChessSystems** is a scala project built with raw-http.
 
+## Scale
+
+1 middleware layers · 1 environment variables
+
 ## High-Impact Files
 
 Changes to these files have the widest blast radius across the codebase:
 
-- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` — imported by **28** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **21** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **19** files
-- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **14** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Board.scala` — imported by **13** files
-- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **10** files
+- `modules/api/src/main/scala/de/nowchess/api/game/GameContext.scala` — imported by **74** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Square.scala` — imported by **66** files
+- `modules/api/src/main/scala/de/nowchess/api/move/Move.scala` — imported by **52** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Color.scala` — imported by **42** files
+- `modules/rule/src/main/scala/de/nowchess/rules/sets/DefaultRules.scala` — imported by **27** files
+- `modules/api/src/main/scala/de/nowchess/api/board/Piece.scala` — imported by **21** files
+
+## Required Environment Variables
+
+- `STOCKFISH_PATH` — `modules/bot/python/nnue.py`
 
 ---
-_Back to [index.md](./index.md) · Generated 2026-04-12_
+_Back to [index.md](./index.md) · Generated 2026-04-23_

.devcontainer/Dockerfile

@@ -0,0 +1,12 @@
+FROM mcr.microsoft.com/devcontainers/java:21-bookworm
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        postgresql-client \
+        redis-tools \
+        stockfish \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN mkdir -p /home/vscode/.gradle/wrapper/dists \
+    && chown -R vscode:vscode /home/vscode/.gradle
+

.devcontainer/README.md

@@ -0,0 +1,18 @@
+# Devcontainer
+
+Dieses Setup startet den NowChess-Workspace zusammen mit Redis und PostgreSQL.
+
+## Enthaltene Services
+- `workspace` – Scala/Gradle-Entwicklungscontainer
+- `redis` – Redis 7.4
+- `postgres` – PostgreSQL 16
+
+## Wichtige Ports
+- App-Services: `8080`, `8081`, `8082`, `8083`, `8084`, `8085`, `8086`, `9086`
+- Redis auf dem Host: `16379`
+- PostgreSQL auf dem Host: `15432`
+
+## Einstieg
+- VS Code: Ordner in einem Dev Container öffnen
+- IntelliJ: Dev Container / Docker-Compose-Workspace öffnen und den `workspace`-Dienst nutzen
+

.devcontainer/devcontainer.json

@@ -0,0 +1,39 @@
+{
+  "name": "NowChessSystems",
+  "dockerComposeFile": ["docker-compose.yml"],
+  "service": "workspace",
+  "workspaceFolder": "/workspaces/NowChessSystems",
+  "shutdownAction": "stopCompose",
+  "overrideCommand": false,
+  "remoteUser": "vscode",
+  "forwardPorts": [8080, 8081, 8082, 8083, 8084, 8085, 8086, 9086],
+  "portsAttributes": {
+    "8080": {"label": "NowChess Core", "onAutoForward": "notify"},
+    "8081": {"label": "NowChess Io", "onAutoForward": "notify"},
+    "8082": {"label": "NowChess Rule", "onAutoForward": "notify"},
+    "8083": {"label": "NowChess Account", "onAutoForward": "notify"},
+    "8084": {"label": "NowChess WebSocket", "onAutoForward": "notify"},
+    "8085": {"label": "NowChess Store", "onAutoForward": "notify"},
+    "8086": {"label": "NowChess Coordinator HTTP", "onAutoForward": "notify"},
+    "9086": {"label": "NowChess Coordinator gRPC", "onAutoForward": "notify"}
+  },
+  "customizations": {
+    "vscode": {
+      "settings": {
+        "java.configuration.updateBuildConfiguration": "automatic",
+        "java.import.gradle.wrapper.enabled": true,
+        "files.watcherExclude": {
+          "**/build/**": true,
+          "**/.gradle/**": true
+        }
+      },
+      "extensions": [
+        "scala-lang.scala",
+        "redhat.java",
+        "vscjava.vscode-java-pack"
+      ]
+    }
+  },
+  "postCreateCommand": "bash -lc './gradlew --no-daemon help >/dev/null'"
+}
+

.devcontainer/docker-compose.yml

@@ -0,0 +1,65 @@
+services:
+  workspace:
+    build:
+      context: ..
+      dockerfile: .devcontainer/Dockerfile
+    command: sleep infinity
+    init: true
+    volumes:
+      - gradle-cache:/home/vscode/.gradle
+    environment:
+      REDIS_HOST: redis
+      REDIS_PORT: 6379
+      REDIS_PREFIX: nowchess
+      DB_URL: jdbc:postgresql://postgres:5432/nowchess
+      DB_USER: nowchess
+      DB_PASSWORD: nowchess
+      CORE_SERVICE_URL: http://localhost:8080
+      INTERNAL_SECRET: dev-internal-secret
+      STOCKFISH_PATH: /usr/games/stockfish
+      NOWCHESS_COORDINATOR_ENABLED: "true"
+    dns:
+      - 8.8.8.8
+      - 1.1.1.1
+    depends_on:
+      redis:
+        condition: service_healthy
+      postgres:
+        condition: service_healthy
+
+  redis:
+    image: docker.io/redis:7.4-alpine
+    command: ["redis-server", "--appendonly", "yes", "--save", "60", "1"]
+    ports:
+      - "16379:6379"
+    volumes:
+      - redis-data:/data
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 5s
+      timeout: 3s
+      retries: 20
+      start_period: 5s
+
+  postgres:
+    image: docker.io/postgres:16-alpine
+    environment:
+      POSTGRES_DB: nowchess
+      POSTGRES_USER: nowchess
+      POSTGRES_PASSWORD: nowchess
+    ports:
+      - "15432:5432"
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB"]
+      interval: 5s
+      timeout: 3s
+      retries: 20
+      start_period: 10s
+
+volumes:
+  gradle-cache:
+  redis-data:
+  postgres-data:
+

.github/workflows/native-image.yml

@@ -0,0 +1,94 @@
+name: Build & Push Native Image
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  check-actor:
+    runs-on: ubuntu-latest
+    outputs:
+      allowed: ${{ steps.check.outputs.allowed }}
+    steps:
+      - id: check
+        run: |
+          if [[ "${{ github.event_name }}" == "workflow_dispatch" || "${{ github.actor }}" == "TeamCity" ]]; then
+            echo "allowed=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "allowed=false" >> "$GITHUB_OUTPUT"
+          fi
+
+  build-and-push:
+    needs: check-actor
+    if: needs.check-actor.outputs.allowed == 'true'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    strategy:
+      matrix:
+        module:
+          - account
+          - bot-platform
+          - coordinator
+          - core
+          - io
+          - official-bots
+          - rule
+          - store
+          - ws
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up GraalVM
+        uses: graalvm/setup-graalvm@v1
+        with:
+          java-version: '21'
+          distribution: 'graalvm-community'
+          native-image-job-reports: 'true'
+
+      - name: Cache Gradle packages
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: gradle-${{ runner.os }}-
+
+      - name: Build native binary
+        run: ./gradlew :modules:${{ matrix.module }}:build -Dquarkus.native.enabled=true -Dquarkus.package.jar.enabled=false --no-daemon
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/now-chess/now-chess-systems/${{ matrix.module }}
+          tags: |
+            type=sha,prefix=,format=short
+            type=raw,value=latest
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: modules/${{ matrix.module }}/src/main/docker/Dockerfile.native
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha,scope=${{ matrix.module }}
+          cache-to: type=gha,mode=max,scope=${{ matrix.module }}

.gitignore

@@ -41,6 +41,9 @@ bin/
 graphify-out/
 .graphify_*.json
 
+### Keys ###
+**/keys/private.pem
+
 ### Mac OS ###
 .DS_Store
 /jacoco-reporter/.venv/

.idea/gradle.xml

@@ -5,16 +5,23 @@
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="corretto-21" />
+        <option name="gradleJvm" value="ms-21" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/modules" />
+            <option value="$PROJECT_DIR$/modules/account" />
             <option value="$PROJECT_DIR$/modules/api" />
-            <option value="$PROJECT_DIR$/modules/bot" />
+            <option value="$PROJECT_DIR$/modules/bot-platform" />
+            <option value="$PROJECT_DIR$/modules/coordinator" />
             <option value="$PROJECT_DIR$/modules/core" />
             <option value="$PROJECT_DIR$/modules/io" />
+            <option value="$PROJECT_DIR$/modules/json" />
+            <option value="$PROJECT_DIR$/modules/official-bots" />
             <option value="$PROJECT_DIR$/modules/rule" />
+            <option value="$PROJECT_DIR$/modules/security" />
+            <option value="$PROJECT_DIR$/modules/store" />
+            <option value="$PROJECT_DIR$/modules/ws" />
           </set>
         </option>
       </GradleProjectSettings>

.idea/misc.xml

@@ -1,9 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="FrameworkDetectionExcludesConfiguration">
     <file type="web" url="file://$PROJECT_DIR$" />
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="corretto-21" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="ms-21" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>

.idea/scala_compiler.xml

@@ -5,7 +5,7 @@
       <option name="deprecationWarnings" value="true" />
       <option name="uncheckedWarnings" value="true" />
     </profile>
-    <profile name="Gradle 2" modules="NowChessSystems.modules.bot.main,NowChessSystems.modules.bot.scoverage,NowChessSystems.modules.bot.test,NowChessSystems.modules.core.integrationTest,NowChessSystems.modules.core.main,NowChessSystems.modules.core.native-test,NowChessSystems.modules.core.quarkus-generated-sources,NowChessSystems.modules.core.quarkus-test-generated-sources,NowChessSystems.modules.core.scoverage,NowChessSystems.modules.core.test,NowChessSystems.modules.io.main,NowChessSystems.modules.io.scoverage,NowChessSystems.modules.io.test,NowChessSystems.modules.rule.main,NowChessSystems.modules.rule.scoverage,NowChessSystems.modules.rule.test,NowChessSystems.modules.ui.main,NowChessSystems.modules.ui.scoverage,NowChessSystems.modules.ui.test">
+    <profile name="Gradle 2" modules="NowChessSystems.modules.account.integrationTest,NowChessSystems.modules.account.main,NowChessSystems.modules.account.native-test,NowChessSystems.modules.account.quarkus-generated-sources,NowChessSystems.modules.account.quarkus-test-generated-sources,NowChessSystems.modules.account.scoverage,NowChessSystems.modules.account.test,NowChessSystems.modules.bot-platform.integrationTest,NowChessSystems.modules.bot-platform.main,NowChessSystems.modules.bot-platform.native-test,NowChessSystems.modules.bot-platform.quarkus-generated-sources,NowChessSystems.modules.bot-platform.quarkus-test-generated-sources,NowChessSystems.modules.bot-platform.scoverage,NowChessSystems.modules.bot-platform.test,NowChessSystems.modules.bot.main,NowChessSystems.modules.bot.scoverage,NowChessSystems.modules.bot.test,NowChessSystems.modules.coordinator.integrationTest,NowChessSystems.modules.coordinator.main,NowChessSystems.modules.coordinator.native-test,NowChessSystems.modules.coordinator.quarkus-generated-sources,NowChessSystems.modules.coordinator.quarkus-test-generated-sources,NowChessSystems.modules.coordinator.scoverage,NowChessSystems.modules.coordinator.test,NowChessSystems.modules.core.integrationTest,NowChessSystems.modules.core.main,NowChessSystems.modules.core.native-test,NowChessSystems.modules.core.quarkus-generated-sources,NowChessSystems.modules.core.quarkus-test-generated-sources,NowChessSystems.modules.core.scoverage,NowChessSystems.modules.core.test,NowChessSystems.modules.io.integrationTest,NowChessSystems.modules.io.main,NowChessSystems.modules.io.native-test,NowChessSystems.modules.io.quarkus-generated-sources,NowChessSystems.modules.io.quarkus-test-generated-sources,NowChessSystems.modules.io.scoverage,NowChessSystems.modules.io.test,NowChessSystems.modules.json.main,NowChessSystems.modules.json.scoverage,NowChessSystems.modules.json.test,NowChessSystems.modules.official-bots.integrationTest,NowChessSystems.modules.official-bots.main,NowChessSystems.modules.official-bots.native-test,NowChessSystems.modules.official-bots.quarkus-generated-sources,NowChessSystems.modules.official-bots.quarkus-test-generated-sources,NowChessSystems.modules.official-bots.scoverage,NowChessSystems.modules.official-bots.test,NowChessSystems.modules.rule.integrationTest,NowChessSystems.modules.rule.main,NowChessSystems.modules.rule.native-test,NowChessSystems.modules.rule.quarkus-generated-sources,NowChessSystems.modules.rule.quarkus-test-generated-sources,NowChessSystems.modules.rule.scoverage,NowChessSystems.modules.rule.test,NowChessSystems.modules.security.main,NowChessSystems.modules.security.scoverage,NowChessSystems.modules.security.test,NowChessSystems.modules.store.integrationTest,NowChessSystems.modules.store.main,NowChessSystems.modules.store.native-test,NowChessSystems.modules.store.quarkus-generated-sources,NowChessSystems.modules.store.quarkus-test-generated-sources,NowChessSystems.modules.store.scoverage,NowChessSystems.modules.store.test,NowChessSystems.modules.ui.main,NowChessSystems.modules.ui.scoverage,NowChessSystems.modules.ui.test,NowChessSystems.modules.ws.integrationTest,NowChessSystems.modules.ws.main,NowChessSystems.modules.ws.native-test,NowChessSystems.modules.ws.quarkus-generated-sources,NowChessSystems.modules.ws.quarkus-test-generated-sources,NowChessSystems.modules.ws.scoverage,NowChessSystems.modules.ws.test">
       <option name="deprecationWarnings" value="true" />
       <option name="uncheckedWarnings" value="true" />
       <parameters>

CLAUDE.md

@@ -9,6 +9,7 @@ Scala 3.5.1 · Gradle 9
 ./compile    # Compile all modules — always run
 ./test       # Run all tests
 ./coverage   # Check coverage
+./lint       # Run linters
 ```
 Use consistently.
 
@@ -21,7 +22,6 @@ Use consistently.
 | `rule` | Game rules | api |
 | `bot`  | Bots and AI | api,rule,io |
 | `io`   | Export formats | api, core |
-| `ui`   | Entrypoint & UI | core, io |
 
 ## Style
 

CLAUDE.original.md

@@ -9,6 +9,7 @@ Scala 3.5.1 · Gradle 9
 ./compile    # Compile all modules — always run
 ./test       # Run all tests
 ./coverage   # Check coverage
+./lint       # Run linters
 ```
 Try to stick to these commands for consistency.
 
@@ -21,7 +22,6 @@ Try to stick to these commands for consistency.
 | `rule` | Game rules | api |
 | `bot`  | Bots and AI | api,rule,io |
 | `io`   | Export formats | api, core |
-| `ui`   | Entrypoint & UI | core, io |
 
 ## Style
 

add-a-new-microservice-ethereal-marshmallow.md

@@ -0,0 +1,334 @@
+# Plan: Add Coordinator Microservice
+
+## Context
+NowChess scales `core` horizontally via shared Redis but lacks:
+- **Instance visibility**: no way to list running cores or their load
+- **Load balancing**: games land randomly on cores; no rebalancing
+- **Failover**: dead cores orphan subscriptions; bullet chess requires <1s recovery
+- **Auto-scaling**: manual ops to add/remove cores
+- **Cache management**: no eviction of stale games from core memory
+
+Bullet chess games run on move timings of <3s. 30s failover = game lost on clock. Target: **<300ms failover**.
+
+---
+
+## Architecture: Sub-1s Failover
+
+### Why Not Polling/TTL
+- TTL expiry: minimum 10-30s detection
+- HTTP polling 3x failure: 30s minimum
+- **gRPC streaming TCP drop: 50-200ms** — use this as primary
+
+### Primary: gRPC Bidirectional Streaming
+- Core opens a **persistent bidirectional stream** (`CoreHeartbeatStream`) to coordinator on startup
+- Core sends heartbeat frames every **200ms**
+- Core crash = TCP RST/FIN → coordinator stream error in **~50-200ms**
+- Stream also carries metadata updates (subscription count changes) in real-time
+
+### Fallback: Redis Heartbeat + K8s Watch
+- Redis heartbeat key `{prefix}:instances:{instanceId}` with **5s TTL**, refreshed every **2s**
+- K8s pod watch via Kubernetes Java client (event-driven; handles pod eviction/OOMKill)
+- Fallback covers: network partition (TCP stays up but core is zombie), coordinator restart gap
+
+---
+
+## Design
+
+### 1. Module: `modules/coordinator`
+**Language**: Scala 3.5.1, Quarkus REST + gRPC  
+**Ports**: HTTP 8086, gRPC 9086  
+**Dependencies**: Redisson, Kubernetes Java client, Quarkus gRPC  
+**Persistence**: None (all state in Redis)
+
+---
+
+### 2. Instance Registry
+
+**Redis schema**:
+```
+{prefix}:instances:{instanceId}
+  - TTL: 5s (refreshed by core every 2s via background task)
+  - Value: JSON
+    {
+      "instanceId": "core-abc123",
+      "hostname": "core-pod-3",
+      "httpPort": 8080,
+      "grpcPort": 9080,
+      "subscriptionCount": 147,
+      "localCacheSize": 147,
+      "lastHeartbeat": "2026-04-26T10:15:30.123Z"
+    }
+
+{prefix}:instance:{instanceId}:games
+  - Type: Redis Set (no TTL — managed explicitly)
+  - Members: all gameIds currently subscribed on this instance
+```
+
+**Core changes** (new `InstanceHeartbeatService` bean in `modules/core`):
+- `@PostConstruct`: generate stable `instanceId` (hostname + random suffix); open gRPC stream to coordinator; publish Redis heartbeat; register in `{prefix}:instances:{instanceId}`
+- Every 200ms: send heartbeat frame on gRPC stream (carries `subscriptionCount`)
+- Every 2s: refresh Redis heartbeat bucket TTL
+- `subscribeGame(gameId)`: `SADD {prefix}:instance:{instanceId}:games gameId`
+- `unsubscribeGame(gameId)` / `evictGame(gameId)`: `SREM {prefix}:instance:{instanceId}:games gameId`
+- `@PreDestroy`: delete Redis key + games set; close gRPC stream (clean shutdown)
+
+---
+
+### 3. Health Monitoring (3 signals, primary fast)
+
+| Signal | Mechanism | Detection time | Role |
+|--------|-----------|---------------|------|
+| **gRPC stream drop** | TCP RST/FIN on bidirectional stream | 50–200ms | Primary |
+| **Redis heartbeat expiry** | `{prefix}:instances:{instanceId}` TTL=5s | 5–7s | Fallback |
+| **K8s pod watch** | `CoreV1Api.listNamespacedPod` watch stream | ~instant (pod events) | Fallback |
+
+**Dead decision**:
+- gRPC stream drops → **immediate failover** (no confirmation needed; games must recover fast)
+- Redis heartbeat expires (gRPC still up) → verify with single HTTP `/q/health` call → if fail: failover
+- K8s pod NotReady (gRPC still up) → failover
+
+---
+
+### 4. Failover Protocol (<300ms target)
+
+```
+T+0ms     Core JVM crashes / network drops
+T+50ms    Coordinator: gRPC stream error received
+T+52ms    SMEMBERS {prefix}:instance:{instanceId}:games  → list of orphaned gameIds
+T+55ms    Distribute gameIds across healthy cores (least-loaded first)
+T+60ms    BatchResubscribeGames gRPC call(s) fire to healthy core(s)
+T+150ms   Healthy cores resubscribed; Redis s2c topics live again
+T+200ms   WebSocket clients reconnect; receive GameFullEventDto on CONNECTED
+```
+
+**Failover steps** (coordinator `FailoverService`):
+1. On stream drop for `instanceId`:
+   a. Mark instance DEAD in local map
+   b. `SMEMBERS {prefix}:instance:{instanceId}:games`
+   c. Group gameIds into batches per target core (round-robin by load)
+   d. For each target core: call `BatchResubscribeGames(gameIds)`
+   e. Each target core: calls `subscribeGame(gameId)` for each (loads from Redis if not in local cache)
+   f. `DEL {prefix}:instance:{instanceId}:games` (cleanup)
+2. Log failover event with count of games migrated + latency
+
+---
+
+### 5. Load Rebalancing
+
+**Thresholds** (both must be evaluated):
+1. **Absolute**: any core > 500 games → rebalance
+2. **Relative**: max load > mean × 1.2 AND max - min > 50 games → rebalance
+
+**Algorithm** (runs every 30s, min 60s between actual rebalances):
+1. Read all `{prefix}:instances:*` keys → load map
+2. Identify overloaded cores (exceed either threshold)
+3. For each overloaded core: pick `excess = load - targetLoad` games
+4. Assign excess games to underloaded cores
+5. Call `UnsubscribeGames(gameIds)` on overloaded core
+6. Call `BatchResubscribeGames(gameIds)` on target core
+7. Overloaded core: `SREM` each game from its set
+8. Target core: `SADD` each game to its set on subscribe
+
+---
+
+### 6. Auto-Scaling
+
+**Metric**: avg `subscriptionCount` across all cores
+
+**Actions**:
+- avg > `scale-up-threshold` (80% of max): patch `nowchess-core` Argo Rollout `spec.replicas += 1`
+- avg < `scale-down-threshold` (30% of max) AND `replicas > min-replicas`: drain one core then scale down
+- Backoff: min 2-minute interval between scale events
+
+**Argo Rollouts API**:
+- CRD: `argoproj.io/v1alpha1`, Kind: `Rollout`, resource: `rollouts`
+- Scale via Fabric8 `GenericKubernetesResource` patch on `spec.replicas`
+- No StatefulSet — Argo Rollout owns pod lifecycle (canary/blue-green strategies respected)
+- Pod watch filter: label selector `app=nowchess-core` (Rollout sets this; `rollouts-pod-template-hash` is Argo's equivalent of `pod-template-hash`)
+
+**Drain before scale-down**:
+1. Pick least-loaded core
+2. Migrate all its games to other cores via `BatchResubscribeGames`
+3. Call `DrainInstance(instanceId)` on that core (sets it to reject new subscriptions)
+4. After drain confirmed: patch Rollout `spec.replicas -= 1`
+
+---
+
+### 7. Cache Eviction
+
+**Trigger**: coordinator scans `{prefix}:game:entry:*` every 10 minutes  
+**Policy**: if `now - lastUpdated > 45min` AND `gameId` in any instance's games set → call `EvictGame`  
+**Effect**: core removes game from `localEngines` and `unsubscribeGame`, `SREM` from instance set
+
+---
+
+### 8. Proto: `coordinator_service.proto`
+
+```proto
+syntax = "proto3";
+package de.nowchess.coordinator;
+
+service CoordinatorService {
+  // Core → Coordinator: bidirectional stream for liveness
+  rpc HeartbeatStream(stream HeartbeatFrame) returns (stream CoordinatorCommand);
+
+  // Coordinator → Core: batch resubscribe after failover or rebalance
+  rpc BatchResubscribeGames(BatchResubscribeRequest) returns (BatchResubscribeResponse);
+
+  // Coordinator → Core: unsubscribe games (rebalance source)
+  rpc UnsubscribeGames(UnsubscribeGamesRequest) returns (UnsubscribeGamesResponse);
+
+  // Coordinator → Core: evict idle games from local cache
+  rpc EvictGames(EvictGamesRequest) returns (EvictGamesResponse);
+
+  // Coordinator → Core: drain instance before scale-down
+  rpc DrainInstance(DrainInstanceRequest) returns (DrainInstanceResponse);
+}
+
+message HeartbeatFrame {
+  string instanceId = 1;
+  string hostname = 2;
+  int32 httpPort = 3;
+  int32 grpcPort = 4;
+  int32 subscriptionCount = 5;
+  int32 localCacheSize = 6;
+  int64 timestampMillis = 7;
+}
+
+message CoordinatorCommand {
+  // Future: coordinator can push commands back (e.g., "start draining")
+  string type = 1;
+  string payload = 2;
+}
+
+message BatchResubscribeRequest {
+  repeated string gameIds = 1;
+}
+
+message BatchResubscribeResponse {
+  int32 subscribedCount = 1;
+  repeated string failedGameIds = 2;
+}
+
+message UnsubscribeGamesRequest {
+  repeated string gameIds = 1;
+}
+
+message UnsubscribeGamesResponse {
+  int32 unsubscribedCount = 1;
+}
+
+message EvictGamesRequest {
+  repeated string gameIds = 1;
+}
+
+message EvictGamesResponse {
+  int32 evictedCount = 1;
+}
+
+message DrainInstanceRequest {}
+
+message DrainInstanceResponse {
+  int32 gamesMigrated = 0;
+}
+```
+
+---
+
+### 9. Coordinator REST API (internal)
+
+- `GET /api/coordinator/instances` — all cores with load, health state
+- `GET /api/coordinator/metrics` — load distribution, rebalance history
+- `POST /api/coordinator/rebalance` — manual rebalance trigger
+- `POST /api/coordinator/failover/{instanceId}` — manual failover
+- `POST /api/coordinator/scale-up` / `scale-down` — manual scaling
+
+---
+
+### 10. Configuration
+
+**`modules/coordinator/src/main/resources/application.yml`**:
+```yaml
+quarkus.application.name: nowchess-coordinator
+quarkus.http.port: 8086
+quarkus.grpc.server.port: 9086
+
+nowchess.coordinator.max-games-per-core: 500
+nowchess.coordinator.max-deviation-percent: 20
+nowchess.coordinator.rebalance-interval: 30s
+nowchess.coordinator.rebalance-min-interval: 60s
+nowchess.coordinator.heartbeat-ttl: 5s
+nowchess.coordinator.stream-heartbeat-interval: 200ms
+nowchess.coordinator.cache-eviction-interval: 10m
+nowchess.coordinator.game-idle-threshold: 45m
+nowchess.coordinator.auto-scale-enabled: false
+nowchess.coordinator.scale-up-threshold: 0.8
+nowchess.coordinator.scale-down-threshold: 0.3
+nowchess.coordinator.scale-min-replicas: 2
+nowchess.coordinator.scale-max-replicas: 10
+nowchess.coordinator.k8s-namespace: default
+nowchess.coordinator.k8s-rollout-name: nowchess-core
+nowchess.coordinator.k8s-rollout-label-selector: app=nowchess-core
+
+quarkus.kubernetes-client.trust-certs: true
+```
+
+**Core `application.yml` additions**:
+```yaml
+nowchess.coordinator.host: localhost
+nowchess.coordinator.grpc-port: 9086
+nowchess.coordinator.stream-heartbeat-interval: 200ms
+nowchess.coordinator.redis-heartbeat-interval: 2s
+nowchess.coordinator.instance-id: ${HOSTNAME:local}-${quarkus.uuid}
+```
+
+---
+
+### 11. Files to Create / Modify
+
+**New — `modules/coordinator/`**:
+```
+build.gradle.kts
+src/main/proto/coordinator_service.proto
+src/main/resources/application.yml
+src/main/scala/de/nowchess/coordinator/
+  resource/CoordinatorResource.scala       # REST endpoints
+  service/InstanceRegistry.scala           # Redis instance list + in-memory map
+  service/HealthMonitor.scala              # gRPC stream watcher + Redis TTL + k8s watch
+  service/FailoverService.scala            # dead core → BatchResubscribe
+  service/LoadBalancer.scala               # rebalance logic
+  service/AutoScaler.scala                 # k8s StatefulSet scaling
+  service/CacheEvictionManager.scala       # idle game eviction
+  grpc/CoordinatorGrpcServer.scala         # CoordinatorService gRPC impl (for HeartbeatStream)
+```
+
+**Modify — `modules/core/`**:
+- `build.gradle.kts` — add `coordinator_service.proto` stub, keep grpc dep
+- `src/main/proto/coordinator_service.proto` — copy (or symlink) proto for stub generation
+- `src/main/scala/de/nowchess/chess/redis/GameRedisSubscriberManager.scala` — `SADD`/`SREM` on subscribe/unsubscribe + implement `BatchResubscribeGames`, `UnsubscribeGames`, `EvictGames`, `DrainInstance` gRPC handlers
+- `src/main/scala/de/nowchess/chess/` — new `InstanceHeartbeatService.scala` (startup, gRPC stream, Redis TTL refresh)
+- `src/main/resources/application.yml` — coordinator connection config
+
+**Modify — root**:
+- `settings.gradle.kts` — add `include("modules/coordinator")`
+
+---
+
+## Verification
+
+1. `./compile` — coordinator and core compile cleanly
+2. **Stream detection**: start core + coordinator; kill core JVM (`kill -9`); coordinator logs failover within 300ms
+3. **Game continuity**: active game on killed core; WebSocket client reconnects and receives game state
+4. **Rebalance**: create 600 games on core-1 (2-core setup); coordinator rebalances ~100 to core-2
+5. **Fallback**: disconnect gRPC stream manually but keep core alive; Redis TTL fallback triggers within 7s
+6. **Cache eviction**: create idle game; coordinator calls `EvictGames` after 45min idle
+7. **REST metrics**: `curl localhost:8086/api/coordinator/metrics` returns per-core load + health
+8. **Restart recovery**: restart coordinator; gRPC streams re-establish from cores; state rebuilt from Redis
+
+---
+
+## Dependencies (new)
+
+- `io.fabric8:kubernetes-client:6.13.0` (Fabric8 k8s client — handles Argo `Rollout` CRD via `GenericKubernetesResource`; no Argo Java SDK needed)
+- Redisson — already in core, reuse via shared config
+- Quarkus gRPC — already in core, reuse

bruno/board/game/01 Create Game.bru

@@ -18,6 +18,10 @@ headers {
 body:json {
   {
     "white": {"id": "p1", "displayName": "Alice"},
-    "black": {"id": "p2", "displayName": "Bob"}
+    "black": {"id": "p2", "displayName": "Bob"},
+    "timeControl": {
+      "limitSeconds": 300,
+      "incrementSeconds": 3
+    }
   }
 }

bruno/board/game/02 Get Game.bru

@@ -4,9 +4,12 @@ meta {
   seq: 2
 }
 
-http {
-  method: GET
+get {
   url: {{baseUrl}}/api/board/game/{{gameId}}
   body: none
   auth: none
 }
+
+vars:pre-request {
+  gameId: j0nPtcjl
+}

bruno/board/game/03 Stream Game.bru

@@ -0,0 +1,34 @@
+meta {
+  name: Stream Game
+  type: ws
+  seq: 3
+}
+
+ws {
+  url: {{wsBaseUrl}}/api/board/game/{{gameId}}/ws
+  body: ws
+  auth: none
+}
+
+body:ws {
+  name: move
+  content: '''
+    {
+      "type": "MOVE",
+      "uci": "b1c3"
+    }
+  '''
+}
+
+body:ws {
+  name: ping
+  content: '''
+    {
+      "type": "PING"
+    }
+  '''
+}
+
+vars:pre-request {
+  gameId: j0nPtcjl
+}

bruno/board/import/01 Import FEN.bru

@@ -19,6 +19,10 @@ body:json {
   {
     "fen": "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq e3 0 1",
     "white": {"id": "p1", "displayName": "Alice"},
-    "black": {"id": "p2", "displayName": "Bob"}
+    "black": {"id": "p2", "displayName": "Bob"},
+    "timeControl": {
+      "limitSeconds": 300,
+      "incrementSeconds": 3
+    }
   }
 }

bruno/board/move/01 Make Move.bru

@@ -11,5 +11,5 @@ post {
 }
 
 vars:pre-request {
-  gameId: tjOgyEcS
+  gameId: Yg200tOF
 }

bruno/board/move/02 Get Legal Moves.bru

@@ -15,5 +15,5 @@ params:query {
 }
 
 vars:pre-request {
-  gameId: tjOgyEcS
+  gameId: COy3oigz
 }

bruno/environments/local.bru

@@ -1,3 +1,5 @@
 vars {
   baseUrl: http://localhost:8080
+  wsBaseUrl: ws://localhost:8084
+  ioBaseUrl: http://localhost:8081
 }

bruno/game/03 Stream Game.bru

@@ -1,19 +0,0 @@
-meta {
-  name: Stream Game
-  type: http
-  seq: 3
-}
-
-get {
-  url: {{baseUrl}}/api/board/game/{{gameId}}/stream
-  body: none
-  auth: none
-}
-
-headers {
-  Accept: application/x-ndjson
-}
-
-vars:pre-request {
-  gameId: tjOgyEcS
-}

bruno/io/export/01 Export FEN.bru

@@ -0,0 +1,100 @@
+meta {
+  name: Export FEN
+  type: http
+  seq: 1
+}
+
+http {
+  method: POST
+  url: {{ioBaseUrl}}/io/export/fen
+  body: json
+  auth: none
+}
+
+headers {
+  Content-Type: application/json
+}
+
+body:json {
+  {
+    "board": {
+      "a1": {"color": "White", "pieceType": "Rook"},
+      "b1": {"color": "White", "pieceType": "Knight"},
+      "c1": {"color": "White", "pieceType": "Bishop"},
+      "d1": {"color": "White", "pieceType": "Queen"},
+      "e1": {"color": "White", "pieceType": "King"},
+      "f1": {"color": "White", "pieceType": "Bishop"},
+      "g1": {"color": "White", "pieceType": "Knight"},
+      "h1": {"color": "White", "pieceType": "Rook"},
+      "a2": {"color": "White", "pieceType": "Pawn"},
+      "b2": {"color": "White", "pieceType": "Pawn"},
+      "c2": {"color": "White", "pieceType": "Pawn"},
+      "d2": {"color": "White", "pieceType": "Pawn"},
+      "e2": {"color": "White", "pieceType": "Pawn"},
+      "f2": {"color": "White", "pieceType": "Pawn"},
+      "g2": {"color": "White", "pieceType": "Pawn"},
+      "h2": {"color": "White", "pieceType": "Pawn"},
+      "a7": {"color": "Black", "pieceType": "Pawn"},
+      "b7": {"color": "Black", "pieceType": "Pawn"},
+      "c7": {"color": "Black", "pieceType": "Pawn"},
+      "d7": {"color": "Black", "pieceType": "Pawn"},
+      "e7": {"color": "Black", "pieceType": "Pawn"},
+      "f7": {"color": "Black", "pieceType": "Pawn"},
+      "g7": {"color": "Black", "pieceType": "Pawn"},
+      "h7": {"color": "Black", "pieceType": "Pawn"},
+      "a8": {"color": "Black", "pieceType": "Rook"},
+      "b8": {"color": "Black", "pieceType": "Knight"},
+      "c8": {"color": "Black", "pieceType": "Bishop"},
+      "d8": {"color": "Black", "pieceType": "Queen"},
+      "e8": {"color": "Black", "pieceType": "King"},
+      "f8": {"color": "Black", "pieceType": "Bishop"},
+      "g8": {"color": "Black", "pieceType": "Knight"},
+      "h8": {"color": "Black", "pieceType": "Rook"}
+    },
+    "turn": "White",
+    "castlingRights": {
+      "whiteKingSide": true,
+      "whiteQueenSide": true,
+      "blackKingSide": true,
+      "blackQueenSide": true
+    },
+    "enPassantSquare": null,
+    "halfMoveClock": 0,
+    "moves": [],
+    "result": null,
+    "initialBoard": {
+      "a1": {"color": "White", "pieceType": "Rook"},
+      "b1": {"color": "White", "pieceType": "Knight"},
+      "c1": {"color": "White", "pieceType": "Bishop"},
+      "d1": {"color": "White", "pieceType": "Queen"},
+      "e1": {"color": "White", "pieceType": "King"},
+      "f1": {"color": "White", "pieceType": "Bishop"},
+      "g1": {"color": "White", "pieceType": "Knight"},
+      "h1": {"color": "White", "pieceType": "Rook"},
+      "a2": {"color": "White", "pieceType": "Pawn"},
+      "b2": {"color": "White", "pieceType": "Pawn"},
+      "c2": {"color": "White", "pieceType": "Pawn"},
+      "d2": {"color": "White", "pieceType": "Pawn"},
+      "e2": {"color": "White", "pieceType": "Pawn"},
+      "f2": {"color": "White", "pieceType": "Pawn"},
+      "g2": {"color": "White", "pieceType": "Pawn"},
+      "h2": {"color": "White", "pieceType": "Pawn"},
+      "a7": {"color": "Black", "pieceType": "Pawn"},
+      "b7": {"color": "Black", "pieceType": "Pawn"},
+      "c7": {"color": "Black", "pieceType": "Pawn"},
+      "d7": {"color": "Black", "pieceType": "Pawn"},
+      "e7": {"color": "Black", "pieceType": "Pawn"},
+      "f7": {"color": "Black", "pieceType": "Pawn"},
+      "g7": {"color": "Black", "pieceType": "Pawn"},
+      "h7": {"color": "Black", "pieceType": "Pawn"},
+      "a8": {"color": "Black", "pieceType": "Rook"},
+      "b8": {"color": "Black", "pieceType": "Knight"},
+      "c8": {"color": "Black", "pieceType": "Bishop"},
+      "d8": {"color": "Black", "pieceType": "Queen"},
+      "e8": {"color": "Black", "pieceType": "King"},
+      "f8": {"color": "Black", "pieceType": "Bishop"},
+      "g8": {"color": "Black", "pieceType": "Knight"},
+      "h8": {"color": "Black", "pieceType": "Rook"}
+    }
+  }
+}

bruno/io/export/02 Export PGN.bru

@@ -0,0 +1,100 @@
+meta {
+  name: Export PGN
+  type: http
+  seq: 2
+}
+
+http {
+  method: POST
+  url: {{ioBaseUrl}}/io/export/pgn
+  body: json
+  auth: none
+}
+
+headers {
+  Content-Type: application/json
+}
+
+body:json {
+  {
+    "board": {
+      "a1": {"color": "White", "pieceType": "Rook"},
+      "b1": {"color": "White", "pieceType": "Knight"},
+      "c1": {"color": "White", "pieceType": "Bishop"},
+      "d1": {"color": "White", "pieceType": "Queen"},
+      "e1": {"color": "White", "pieceType": "King"},
+      "f1": {"color": "White", "pieceType": "Bishop"},
+      "g1": {"color": "White", "pieceType": "Knight"},
+      "h1": {"color": "White", "pieceType": "Rook"},
+      "a2": {"color": "White", "pieceType": "Pawn"},
+      "b2": {"color": "White", "pieceType": "Pawn"},
+      "c2": {"color": "White", "pieceType": "Pawn"},
+      "d2": {"color": "White", "pieceType": "Pawn"},
+      "e2": {"color": "White", "pieceType": "Pawn"},
+      "f2": {"color": "White", "pieceType": "Pawn"},
+      "g2": {"color": "White", "pieceType": "Pawn"},
+      "h2": {"color": "White", "pieceType": "Pawn"},
+      "a7": {"color": "Black", "pieceType": "Pawn"},
+      "b7": {"color": "Black", "pieceType": "Pawn"},
+      "c7": {"color": "Black", "pieceType": "Pawn"},
+      "d7": {"color": "Black", "pieceType": "Pawn"},
+      "e7": {"color": "Black", "pieceType": "Pawn"},
+      "f7": {"color": "Black", "pieceType": "Pawn"},
+      "g7": {"color": "Black", "pieceType": "Pawn"},
+      "h7": {"color": "Black", "pieceType": "Pawn"},
+      "a8": {"color": "Black", "pieceType": "Rook"},
+      "b8": {"color": "Black", "pieceType": "Knight"},
+      "c8": {"color": "Black", "pieceType": "Bishop"},
+      "d8": {"color": "Black", "pieceType": "Queen"},
+      "e8": {"color": "Black", "pieceType": "King"},
+      "f8": {"color": "Black", "pieceType": "Bishop"},
+      "g8": {"color": "Black", "pieceType": "Knight"},
+      "h8": {"color": "Black", "pieceType": "Rook"}
+    },
+    "turn": "White",
+    "castlingRights": {
+      "whiteKingSide": true,
+      "whiteQueenSide": true,
+      "blackKingSide": true,
+      "blackQueenSide": true
+    },
+    "enPassantSquare": null,
+    "halfMoveClock": 0,
+    "moves": [],
+    "result": null,
+    "initialBoard": {
+      "a1": {"color": "White", "pieceType": "Rook"},
+      "b1": {"color": "White", "pieceType": "Knight"},
+      "c1": {"color": "White", "pieceType": "Bishop"},
+      "d1": {"color": "White", "pieceType": "Queen"},
+      "e1": {"color": "White", "pieceType": "King"},
+      "f1": {"color": "White", "pieceType": "Bishop"},
+      "g1": {"color": "White", "pieceType": "Knight"},
+      "h1": {"color": "White", "pieceType": "Rook"},
+      "a2": {"color": "White", "pieceType": "Pawn"},
+      "b2": {"color": "White", "pieceType": "Pawn"},
+      "c2": {"color": "White", "pieceType": "Pawn"},
+      "d2": {"color": "White", "pieceType": "Pawn"},
+      "e2": {"color": "White", "pieceType": "Pawn"},
+      "f2": {"color": "White", "pieceType": "Pawn"},
+      "g2": {"color": "White", "pieceType": "Pawn"},
+      "h2": {"color": "White", "pieceType": "Pawn"},
+      "a7": {"color": "Black", "pieceType": "Pawn"},
+      "b7": {"color": "Black", "pieceType": "Pawn"},
+      "c7": {"color": "Black", "pieceType": "Pawn"},
+      "d7": {"color": "Black", "pieceType": "Pawn"},
+      "e7": {"color": "Black", "pieceType": "Pawn"},
+      "f7": {"color": "Black", "pieceType": "Pawn"},
+      "g7": {"color": "Black", "pieceType": "Pawn"},
+      "h7": {"color": "Black", "pieceType": "Pawn"},
+      "a8": {"color": "Black", "pieceType": "Rook"},
+      "b8": {"color": "Black", "pieceType": "Knight"},
+      "c8": {"color": "Black", "pieceType": "Bishop"},
+      "d8": {"color": "Black", "pieceType": "Queen"},
+      "e8": {"color": "Black", "pieceType": "King"},
+      "f8": {"color": "Black", "pieceType": "Bishop"},
+      "g8": {"color": "Black", "pieceType": "Knight"},
+      "h8": {"color": "Black", "pieceType": "Rook"}
+    }
+  }
+}

bruno/io/export/folder.bru

@@ -0,0 +1,4 @@
+meta {
+  name: export
+  seq: 2
+}

bruno/io/import/01 Import FEN.bru

@@ -0,0 +1,22 @@
+meta {
+  name: Import FEN
+  type: http
+  seq: 1
+}
+
+http {
+  method: POST
+  url: {{ioBaseUrl}}/io/import/fen
+  body: json
+  auth: none
+}
+
+headers {
+  Content-Type: application/json
+}
+
+body:json {
+  {
+    "fen": "rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq e3 0 1"
+  }
+}

bruno/io/import/02 Import PGN.bru

@@ -0,0 +1,22 @@
+meta {
+  name: Import PGN
+  type: http
+  seq: 2
+}
+
+http {
+  method: POST
+  url: {{ioBaseUrl}}/io/import/pgn
+  body: json
+  auth: none
+}
+
+headers {
+  Content-Type: application/json
+}
+
+body:json {
+  {
+    "pgn": "1. e4 e5 2. Nf3 Nc6 *"
+  }
+}

bruno/io/import/folder.bru

@@ -0,0 +1,4 @@
+meta {
+  name: import
+  seq: 1
+}

build.gradle.kts

@@ -12,7 +12,7 @@ version = "1.0-SNAPSHOT"
 // converted to scoverage regexes via globToScoverageRegex for instrumentation-time exclusion.
 val coverageExclusions = listOf(
     // UI renders JavaFX components; headless test environments cannot exercise rendering paths
-    "modules/ui/**",
+    "modules/api/**",
     // FastParse macro-generated combinators produce synthetic branches that scoverage marks as uncovered
     "modules/io/src/main/scala/de/nowchess/io/fen/FenParserFastParse*",
     // NNUE inference pipeline — coverage requires a trained model file not present in CI
@@ -36,7 +36,23 @@ val coverageExclusions = listOf(
     "**/core/src/main/scala/de/nowchess/chess/registry/GameEntry.scala",
     "**/core/src/main/scala/de/nowchess/chess/registry/GameRegistryImpl.scala",
     // GameResource — REST integration layer with @Inject var fields; mocking dependencies for unit tests is infeasible with Quarkus DI; integration tests would require @QuarkusTest which Scoverage doesn't instrument
-    "**/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala"
+    "**/core/src/main/scala/de/nowchess/chess/resource/GameResource.scala",
+    // IoResource — same rationale as GameResource; @QuarkusTest not instrumented by Scoverage
+    "**/io/src/main/scala/de/nowchess/io/service/resource/IoResource.scala",
+    // JacksonConfig — Quarkus lifecycle hook, no testable logic beyond ObjectMapper registration
+    "**/io/src/main/scala/de/nowchess/io/service/config/JacksonConfig.scala",
+    //RuleSetRestAdapter - Quarkus integration of rule into core, only testable with Quarkus tests
+    "**/core/src/main/de/nowchess/chess/adapter/RuleSetRestAdapter.scala",
+    // AccountResource / ChallengeResource — REST integration layer; @QuarkusTest not instrumented by Scoverage
+    "**/account/src/main/scala/de/nowchess/account/resource/**",
+    // JacksonConfig / NativeReflectionConfig — Quarkus lifecycle hooks, no testable logic
+    "**/account/src/main/scala/de/nowchess/account/config/**",
+    // WebSocket service — infrastructure CDI beans (RedisConfig)
+    "**/ws/src/main/scala/de/nowchess/ws/config/**",
+    // GameWebSocketResource in core — replaced by ws module
+    "**/core/src/main/scala/de/nowchess/chess/resource/GameWebSocketResource.scala",
+    // Coordinator infrastructure — gRPC, microservice orchestration
+    "**/coordinator/src/main/scala/**",
 )
 
 // Converts a Sonar-style glob to a scoverage regex (matched against full source path).
@@ -72,7 +88,7 @@ sonar {
 val versions = mapOf(
     "QUARKUS_SCALA3"        to "1.0.0",
     "SCALA3"                to "3.5.1",
-    "SCALA_LIBRARY"         to "2.13.18",
+    "SCALA_LIBRARY"         to "2.13.16",
     "SCALATEST"             to "3.2.19",
     "SCALATEST_JUNIT"       to "0.1.11",
     "SCOVERAGE"             to "2.1.1",

docs/board-api-spec.yaml

@@ -1,771 +0,0 @@
-openapi: 3.0.3
-info:
-  title: NowChess Board API
-  description: |
-    REST API for the NowChess application. Designed to feel familiar to users
-    of the [lichess API](https://lichess.org/api).
-
-    ## Authentication
-    Most endpoints require a Bearer token:
-    ```
-    Authorization: Bearer <token>
-    ```
-    Authentication is reserved for future implementation — endpoints are currently
-    open unless noted otherwise.
-
-    ## Move notation
-    Moves are expressed in **UCI notation**: `{from}{to}[promotion]`
-    - Normal move: `e2e4`
-    - Capture: `d5e6`
-    - Promotion: `e7e8q` (q=queen, r=rook, b=bishop, n=knight)
-    - Castling: `e1g1` (kingside white), `e1c1` (queenside white)
-
-    ## Streaming
-    Endpoints that support streaming return **NDJSON** (newline-delimited JSON).
-    Request them with:
-    ```
-    Accept: application/x-ndjson
-    ```
-    Each line of the response is a complete JSON object. Empty lines are
-    keep-alive heartbeats.
-
-    ## Rate limiting
-    Requests that exceed the rate limit receive `429 Too Many Requests`.
-    Honour the `Retry-After` response header and wait before retrying.
-  version: 1.0.0
-  contact:
-    name: NowChess
-  license:
-    name: MIT
-
-servers:
-  - url: http://localhost:8080
-    description: Local development server
-
-tags:
-  - name: game
-    description: Create and manage chess games
-  - name: move
-    description: Make moves and navigate game history
-  - name: draw
-    description: Draw offers and claims
-  - name: import
-    description: Load a game from FEN or PGN
-  - name: export
-    description: Export a game as FEN or PGN
-
-paths:
-
-  # ---------------------------------------------------------------------------
-  # Game lifecycle
-  # ---------------------------------------------------------------------------
-
-  /api/board/game:
-    post:
-      operationId: createGame
-      tags: [game]
-      summary: Create a new game
-      description: |
-        Creates a new chess game starting from the initial position.
-        Returns the full game state including the generated `gameId`.
-      security:
-        - bearerAuth: []
-      requestBody:
-        required: false
-        content:
-          application/json:
-            schema:
-              $ref: '#/components/schemas/CreateGameRequest'
-      responses:
-        '201':
-          description: Game created
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/GameFull'
-        '400':
-          $ref: '#/components/responses/BadRequest'
-        '401':
-          $ref: '#/components/responses/Unauthorized'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  /api/board/game/{gameId}:
-    get:
-      operationId: getGame
-      tags: [game]
-      summary: Get game state
-      description: Returns the full current state of a game.
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-      responses:
-        '200':
-          description: Current game state
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/GameFull'
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  /api/board/game/{gameId}/stream:
-    get:
-      operationId: streamGame
-      tags: [game]
-      summary: Stream game events
-      description: |
-        Opens a persistent NDJSON stream for a game. The first object sent is
-        a `gameFull` event containing the complete game state. Subsequent
-        objects are `gameState` events sent whenever the game changes (move
-        made, draw offered, game over, etc.).
-
-        Empty lines are heartbeats to keep the connection alive.
-
-        Connect with:
-        ```
-        Accept: application/x-ndjson
-        ```
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-      responses:
-        '200':
-          description: NDJSON event stream
-          content:
-            application/x-ndjson:
-              schema:
-                oneOf:
-                  - $ref: '#/components/schemas/GameFullEvent'
-                  - $ref: '#/components/schemas/GameStateEvent'
-                  - $ref: '#/components/schemas/ErrorEvent'
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  /api/board/game/{gameId}/resign:
-    post:
-      operationId: resignGame
-      tags: [game]
-      summary: Resign the game
-      description: The active player resigns. The game ends immediately.
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-      responses:
-        '200':
-          description: Resignation accepted
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/OkResponse'
-        '400':
-          $ref: '#/components/responses/BadRequest'
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  # ---------------------------------------------------------------------------
-  # Move-making
-  # ---------------------------------------------------------------------------
-
-  /api/board/game/{gameId}/move/{uci}:
-    post:
-      operationId: makeMove
-      tags: [move]
-      summary: Make a move
-      description: |
-        Submit a move in UCI notation. The move must be legal for the side
-        currently to move.
-
-        For promotion moves include the target piece as the fifth character:
-        `e7e8q`, `a2a1r`, etc. Promotion moves without the fifth character
-        are rejected with `400 INVALID_MOVE`.
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-        - name: uci
-          in: path
-          required: true
-          description: Move in UCI notation (e.g. `e2e4`, `e7e8q`)
-          schema:
-            type: string
-            pattern: '^[a-h][1-8][a-h][1-8][qrbn]?$'
-            example: e2e4
-      responses:
-        '200':
-          description: Move applied — returns updated game state
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/GameState'
-        '400':
-          $ref: '#/components/responses/BadRequest'
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  /api/board/game/{gameId}/moves:
-    get:
-      operationId: getLegalMoves
-      tags: [move]
-      summary: Get legal moves
-      description: |
-        Returns all legal moves for the side currently to move.
-        Optionally filter to moves originating from a single square.
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-        - name: square
-          in: query
-          required: false
-          description: Filter to moves from this square (e.g. `e2`)
-          schema:
-            type: string
-            pattern: '^[a-h][1-8]$'
-            example: e2
-      responses:
-        '200':
-          description: List of legal moves
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/LegalMovesResponse'
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  /api/board/game/{gameId}/undo:
-    post:
-      operationId: undoMove
-      tags: [move]
-      summary: Undo the last move
-      description: Reverts the most recent move. Returns the updated game state.
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-      responses:
-        '200':
-          description: Move undone
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/GameState'
-        '400':
-          description: No moves to undo
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/ApiError'
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  /api/board/game/{gameId}/redo:
-    post:
-      operationId: redoMove
-      tags: [move]
-      summary: Redo a previously undone move
-      description: Re-applies the next move in the undo stack. Returns the updated game state.
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-      responses:
-        '200':
-          description: Move redone
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/GameState'
-        '400':
-          description: No moves to redo
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/ApiError'
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  # ---------------------------------------------------------------------------
-  # Draw handling
-  # ---------------------------------------------------------------------------
-
-  /api/board/game/{gameId}/draw/{action}:
-    post:
-      operationId: drawAction
-      tags: [draw]
-      summary: Offer, accept, decline, or claim a draw
-      description: |
-        Perform a draw-related action:
-
-        | Action    | Description |
-        |-----------|-------------|
-        | `offer`   | Offer a draw to the opponent |
-        | `accept`  | Accept the opponent's draw offer |
-        | `decline` | Decline the opponent's draw offer |
-        | `claim`   | Claim a draw under the fifty-move rule (only valid when `status` is `fiftyMoveAvailable`) |
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-        - name: action
-          in: path
-          required: true
-          schema:
-            type: string
-            enum: [offer, accept, decline, claim]
-      responses:
-        '200':
-          description: Action accepted
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/OkResponse'
-        '400':
-          $ref: '#/components/responses/BadRequest'
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  # ---------------------------------------------------------------------------
-  # Import
-  # ---------------------------------------------------------------------------
-
-  /api/board/game/import/fen:
-    post:
-      operationId: importFen
-      tags: [import]
-      summary: Load a position from FEN
-      description: |
-        Creates a new game from a FEN string. The game starts at the position
-        described by the FEN; move history prior to that position is not
-        available.
-      security:
-        - bearerAuth: []
-      requestBody:
-        required: true
-        content:
-          application/json:
-            schema:
-              $ref: '#/components/schemas/ImportFenRequest'
-      responses:
-        '201':
-          description: Game created from FEN
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/GameFull'
-        '400':
-          $ref: '#/components/responses/BadRequest'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  /api/board/game/import/pgn:
-    post:
-      operationId: importPgn
-      tags: [import]
-      summary: Load a game from PGN
-      description: |
-        Creates a new game by replaying all moves in a PGN string. The game
-        starts at the position after the final move in the PGN; undo is
-        available for every replayed move.
-      security:
-        - bearerAuth: []
-      requestBody:
-        required: true
-        content:
-          application/json:
-            schema:
-              $ref: '#/components/schemas/ImportPgnRequest'
-      responses:
-        '201':
-          description: Game created from PGN
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/GameFull'
-        '400':
-          $ref: '#/components/responses/BadRequest'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  # ---------------------------------------------------------------------------
-  # Export
-  # ---------------------------------------------------------------------------
-
-  /api/board/game/{gameId}/export/fen:
-    get:
-      operationId: exportFen
-      tags: [export]
-      summary: Export current position as FEN
-      description: Returns the FEN string representing the current board position.
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-      responses:
-        '200':
-          description: FEN string
-          content:
-            text/plain:
-              schema:
-                type: string
-                example: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq e3 0 1
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-  /api/board/game/{gameId}/export/pgn:
-    get:
-      operationId: exportPgn
-      tags: [export]
-      summary: Export game as PGN
-      description: Returns the full PGN for the game including headers and move text.
-      security:
-        - bearerAuth: []
-      parameters:
-        - $ref: '#/components/parameters/gameId'
-      responses:
-        '200':
-          description: PGN text
-          content:
-            application/x-chess-pgn:
-              schema:
-                type: string
-                example: |
-                  [Event "NowChess game"]
-                  [White "Player1"]
-                  [Black "Player2"]
-                  [Result "*"]
-
-                  1. e4 e5 2. Nf3 *
-        '404':
-          $ref: '#/components/responses/NotFound'
-        '429':
-          $ref: '#/components/responses/TooManyRequests'
-
-# =============================================================================
-# Components
-# =============================================================================
-
-components:
-
-  securitySchemes:
-    bearerAuth:
-      type: http
-      scheme: bearer
-      description: 'Personal access token — `Authorization: Bearer <token>`'
-
-  parameters:
-    gameId:
-      name: gameId
-      in: path
-      required: true
-      description: 8-character alphanumeric game ID (e.g. `Qa7FJNk2`)
-      schema:
-        type: string
-        pattern: '^[A-Za-z0-9]{8}$'
-        example: Qa7FJNk2
-
-  responses:
-    BadRequest:
-      description: Invalid input
-      content:
-        application/json:
-          schema:
-            $ref: '#/components/schemas/ApiError'
-    Unauthorized:
-      description: Missing or invalid authentication token
-      content:
-        application/json:
-          schema:
-            $ref: '#/components/schemas/ApiError'
-    NotFound:
-      description: Game not found
-      content:
-        application/json:
-          schema:
-            $ref: '#/components/schemas/ApiError'
-    TooManyRequests:
-      description: Rate limit exceeded — see `Retry-After` header
-      headers:
-        Retry-After:
-          description: Seconds to wait before retrying
-          schema:
-            type: integer
-      content:
-        application/json:
-          schema:
-            $ref: '#/components/schemas/ApiError'
-
-  schemas:
-
-    # -------------------------------------------------------------------------
-    # Requests
-    # -------------------------------------------------------------------------
-
-    CreateGameRequest:
-      type: object
-      description: Parameters for creating a new game. All fields are optional.
-      properties:
-        white:
-          $ref: '#/components/schemas/PlayerInfo'
-        black:
-          $ref: '#/components/schemas/PlayerInfo'
-
-    ImportFenRequest:
-      type: object
-      required: [fen]
-      properties:
-        fen:
-          type: string
-          description: Complete FEN string (6 fields)
-          example: rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
-        white:
-          $ref: '#/components/schemas/PlayerInfo'
-        black:
-          $ref: '#/components/schemas/PlayerInfo'
-
-    ImportPgnRequest:
-      type: object
-      required: [pgn]
-      properties:
-        pgn:
-          type: string
-          description: PGN text (headers and move list)
-          example: "1. e4 e5 2. Nf3 Nc6 *"
-
-    # -------------------------------------------------------------------------
-    # Game state
-    # -------------------------------------------------------------------------
-
-    GameFull:
-      type: object
-      description: Complete game information including players and current state.
-      required: [gameId, white, black, state]
-      properties:
-        gameId:
-          type: string
-          description: Unique 8-character game identifier
-          example: Qa7FJNk2
-        white:
-          $ref: '#/components/schemas/PlayerInfo'
-        black:
-          $ref: '#/components/schemas/PlayerInfo'
-        state:
-          $ref: '#/components/schemas/GameState'
-
-    GameState:
-      type: object
-      description: |
-        The current game state. Included in `GameFull` and returned by move
-        endpoints and stream events.
-      required: [fen, pgn, turn, status, moves, undoAvailable, redoAvailable]
-      properties:
-        fen:
-          type: string
-          description: FEN string for the current position
-          example: rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR b KQkq e3 0 1
-        pgn:
-          type: string
-          description: PGN move text for the full game so far
-          example: "1. e4"
-        turn:
-          type: string
-          enum: [white, black]
-          description: The side to move
-        status:
-          $ref: '#/components/schemas/GameStatus'
-        winner:
-          type: string
-          enum: [white, black]
-          description: Set when `status` is `checkmate` or `resign`
-          nullable: true
-        moves:
-          type: array
-          description: All moves played so far, in UCI notation
-          items:
-            type: string
-          example: [e2e4, e7e5, g1f3]
-        undoAvailable:
-          type: boolean
-          description: Whether `POST /undo` is currently valid
-        redoAvailable:
-          type: boolean
-          description: Whether `POST /redo` is currently valid
-
-    GameStatus:
-      type: string
-      description: |
-        Current game status:
-
-        | Value | Meaning |
-        |-------|---------|
-        | `started` | Game in progress, no special condition |
-        | `check` | Side to move is in check |
-        | `checkmate` | Side to move is checkmated — game over |
-        | `stalemate` | Side to move has no legal moves, not in check — game over (draw) |
-        | `resign` | A player resigned — game over |
-        | `draw` | Draw agreed or claimed — game over |
-        | `drawOffered` | Waiting for the opponent to accept or decline a draw offer |
-        | `fiftyMoveAvailable` | Fifty-move rule threshold reached; active player may claim draw |
-        | `insufficientMaterial` | Neither side has enough pieces to deliver checkmate — game over (draw) |
-      enum:
-        - started
-        - check
-        - checkmate
-        - stalemate
-        - resign
-        - draw
-        - drawOffered
-        - fiftyMoveAvailable
-        - insufficientMaterial
-
-    # -------------------------------------------------------------------------
-    # Moves
-    # -------------------------------------------------------------------------
-
-    LegalMovesResponse:
-      type: object
-      required: [moves]
-      properties:
-        moves:
-          type: array
-          items:
-            $ref: '#/components/schemas/LegalMove'
-
-    LegalMove:
-      type: object
-      required: [from, to, uci, moveType]
-      properties:
-        from:
-          type: string
-          description: Origin square in algebraic notation
-          example: e2
-        to:
-          type: string
-          description: Destination square in algebraic notation
-          example: e4
-        uci:
-          type: string
-          description: Full move in UCI notation
-          example: e2e4
-        moveType:
-          $ref: '#/components/schemas/MoveType'
-        promotion:
-          type: string
-          enum: [queen, rook, bishop, knight]
-          description: Target piece for promotion moves
-          nullable: true
-
-    MoveType:
-      type: string
-      description: Classification of the move
-      enum:
-        - normal
-        - capture
-        - castleKingside
-        - castleQueenside
-        - enPassant
-        - promotion
-
-    # -------------------------------------------------------------------------
-    # Streaming events
-    # -------------------------------------------------------------------------
-
-    GameFullEvent:
-      type: object
-      description: |
-        First event on a game stream. Contains the complete game snapshot.
-      required: [type, game]
-      properties:
-        type:
-          type: string
-          enum: [gameFull]
-        game:
-          $ref: '#/components/schemas/GameFull'
-
-    GameStateEvent:
-      type: object
-      description: |
-        Emitted on a game stream whenever the game state changes (move played,
-        draw offered, game over, etc.).
-      required: [type, state]
-      properties:
-        type:
-          type: string
-          enum: [gameState]
-        state:
-          $ref: '#/components/schemas/GameState'
-
-    ErrorEvent:
-      type: object
-      description: Emitted on a game stream when an error occurs.
-      required: [type, error]
-      properties:
-        type:
-          type: string
-          enum: [error]
-        error:
-          $ref: '#/components/schemas/ApiError'
-
-    # -------------------------------------------------------------------------
-    # Shared types
-    # -------------------------------------------------------------------------
-
-    PlayerInfo:
-      type: object
-      required: [id, displayName]
-      properties:
-        id:
-          type: string
-          description: Unique player identifier
-          example: player1
-        displayName:
-          type: string
-          description: Human-readable display name
-          example: Alice
-
-    OkResponse:
-      type: object
-      required: [ok]
-      properties:
-        ok:
-          type: boolean
-          enum: [true]
-
-    ApiError:
-      type: object
-      required: [code, message]
-      properties:
-        code:
-          type: string
-          description: Machine-readable error code
-          example: INVALID_MOVE
-        message:
-          type: string
-          description: Human-readable error description
-          example: e2e5 is not a legal move
-        field:
-          type: string
-          description: Request field that caused the error, if applicable
-          example: uci
-          nullable: true

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 #Sat Mar 21 14:37:06 CET 2026
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.0-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

lint

@@ -0,0 +1,3 @@
+#! /usr/bin/env bash
+
+./gradlew scalafix spotlessCheck

modules/account/build.gradle.kts

@@ -0,0 +1,117 @@
+plugins {
+    id("scala")
+    id("org.scoverage") version "8.1"
+    id("io.quarkus")
+}
+
+group = "de.nowchess"
+version = "1.0-SNAPSHOT"
+
+@Suppress("UNCHECKED_CAST")
+val versions = rootProject.extra["VERSIONS"] as Map<String, String>
+
+repositories {
+    mavenCentral()
+}
+
+scala {
+    scalaVersion = versions["SCALA3"]!!
+}
+
+scoverage {
+    scoverageVersion.set(versions["SCOVERAGE"]!!)
+}
+
+tasks.withType<ScalaCompile> {
+    scalaCompileOptions.additionalParameters = listOf("-encoding", "UTF-8")
+}
+
+val quarkusPlatformGroupId: String by project
+val quarkusPlatformArtifactId: String by project
+val quarkusPlatformVersion: String by project
+
+dependencies {
+
+    runtimeOnly("io.quarkus:quarkus-jdbc-h2")
+
+    compileOnly("org.scala-lang:scala3-compiler_3") {
+        version {
+            strictly(versions["SCALA3"]!!)
+        }
+    }
+    implementation("org.scala-lang:scala3-library_3") {
+        version {
+            strictly(versions["SCALA3"]!!)
+        }
+    }
+
+    implementation(project(":modules:security"))
+
+    implementation(platform("${quarkusPlatformGroupId}:${quarkusPlatformArtifactId}:${quarkusPlatformVersion}"))
+    implementation("io.quarkus:quarkus-rest")
+    implementation("io.quarkus:quarkus-rest-jackson")
+    implementation("io.quarkus:quarkus-rest-client-jackson")
+    implementation("io.quarkus:quarkus-config-yaml")
+    implementation("io.quarkus:quarkus-arc")
+    implementation("io.quarkus:quarkus-hibernate-orm-panache")
+    implementation("io.quarkus:quarkus-jdbc-postgresql")
+    implementation("io.quarkus:quarkus-smallrye-jwt")
+    implementation("io.quarkus:quarkus-smallrye-jwt-build")
+    implementation("io.quarkus:quarkus-elytron-security-common")
+    implementation("io.quarkus:quarkus-smallrye-health")
+    implementation("io.quarkus:quarkus-micrometer")
+    implementation("io.quarkus:quarkus-smallrye-openapi")
+    implementation("com.fasterxml.jackson.module:jackson-module-scala_3:${versions["JACKSON_SCALA"]!!}")
+    implementation("io.quarkus:quarkus-redis-client")
+
+    testImplementation(platform("org.junit:junit-bom:5.13.4"))
+    testImplementation("org.junit.jupiter:junit-jupiter")
+    testImplementation("org.scalatest:scalatest_3:${versions["SCALATEST"]!!}")
+    testImplementation("co.helmethair:scalatest-junit-runner:${versions["SCALATEST_JUNIT"]!!}")
+    testImplementation("io.quarkus:quarkus-junit")
+    testImplementation("io.rest-assured:rest-assured")
+    testImplementation("io.quarkus:quarkus-jdbc-h2")
+    testImplementation("io.quarkus:quarkus-test-security")
+    testImplementation("io.quarkus:quarkus-junit5-mockito")
+
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+}
+
+configurations.matching { !it.name.startsWith("scoverage") }.configureEach {
+    resolutionStrategy.force("org.scala-lang:scala-library:${versions["SCALA_LIBRARY"]!!}")
+}
+configurations.scoverage {
+    resolutionStrategy.eachDependency {
+        if (requested.group == "org.scoverage" && requested.name.startsWith("scalac-scoverage-plugin_")) {
+            useTarget("${requested.group}:scalac-scoverage-plugin_2.13.16:2.3.0")
+        }
+    }
+}
+
+tasks.withType<JavaCompile> {
+    options.encoding = "UTF-8"
+    options.compilerArgs.add("-parameters")
+}
+
+tasks.withType<Jar>().configureEach {
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+}
+
+tasks.test {
+    useJUnitPlatform {
+        includeEngines("scalatest", "junit-jupiter")
+        testLogging {
+            events("passed", "skipped", "failed")
+            showStandardStreams = true
+            exceptionFormat = org.gradle.api.tasks.testing.logging.TestExceptionFormat.FULL
+        }
+    }
+    finalizedBy(tasks.reportScoverage)
+}
+tasks.reportScoverage {
+    dependsOn(tasks.test)
+}
+
+tasks.jar {
+    duplicatesStrategy = DuplicatesStrategy.INCLUDE
+}

modules/account/src/main/resources/META-INF.native-image.de.nowchess.account/reachability-metadata.json

@@ -0,0 +1,27 @@
+{
+  "reflection": [
+    { "type": "scala.Tuple1[]" },
+    { "type": "scala.Tuple2[]" },
+    { "type": "scala.Tuple3[]" },
+    { "type": "scala.Tuple4[]" },
+    { "type": "scala.Tuple5[]" },
+    { "type": "scala.Tuple6[]" },
+    { "type": "scala.Tuple7[]" },
+    { "type": "scala.Tuple8[]" },
+    { "type": "scala.Tuple9[]" },
+    { "type": "scala.Tuple10[]" },
+    { "type": "scala.Tuple11[]" },
+    { "type": "scala.Tuple12[]" },
+    { "type": "scala.Tuple13[]" },
+    { "type": "scala.Tuple14[]" },
+    { "type": "scala.Tuple15[]" },
+    { "type": "scala.Tuple16[]" },
+    { "type": "scala.Tuple17[]" },
+    { "type": "scala.Tuple18[]" },
+    { "type": "scala.Tuple19[]" },
+    { "type": "scala.Tuple20[]" },
+    { "type": "scala.Tuple21[]" },
+    { "type": "scala.Tuple22[]" },
+    { "type": "com.fasterxml.jackson.module.scala.introspect.PropertyDescriptor[]" }
+  ]
+}

modules/account/src/main/resources/application.yml

@@ -0,0 +1,64 @@
+quarkus:
+  http:
+    port: 8083
+  application:
+    name: nowchess-account
+  redis:
+    hosts: redis://${REDIS_HOST:localhost}:${REDIS_PORT:6379}
+  rest-client:
+    core-service:
+      url: http://localhost:8080
+  smallrye-openapi:
+    info-title: NowChess Account Service
+    path: /openapi
+  swagger-ui:
+    always-include: true
+    path: /swagger-ui
+  datasource:
+    db-kind: h2
+    username: sa
+    password: ""
+    jdbc:
+      url: jdbc:h2:mem:nowchess;DB_CLOSE_DELAY=-1
+  hibernate-orm:
+    schema-management:
+      strategy: drop-and-create
+
+nowchess:
+  redis:
+    host: localhost
+    port: 6379
+    prefix: nowchess
+  internal:
+    secret: 123abc
+
+"%deployed":
+  quarkus:
+    rest-client:
+      core-service:
+        url: ${CORE_SERVICE_URL}
+  nowchess:
+    redis:
+      host: ${REDIS_HOST:localhost}
+      port: ${REDIS_PORT:6379}
+      prefix: ${REDIS_PREFIX:nowchess}
+    datasource:
+      db-kind: postgresql
+      username: ${DB_USER}
+      password: ${DB_PASSWORD}
+      jdbc:
+        url: ${DB_URL}
+    hibernate-orm:
+      schema-management:
+        strategy: update
+  mp:
+    jwt:
+      verify:
+        publickey:
+          location: ${JWT_PUBLIC_KEY_PATH:keys/public.pem}
+        issuer: nowchess
+  smallrye:
+    jwt:
+      sign:
+        key:
+          location: ${JWT_PRIVATE_KEY_PATH:keys/private.pem}

modules/account/src/main/resources/keys/public.pem

@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxDsnsCAl0vQx7Vu9CLDZ
+g0SG05NgUzu9T+3DTEaHGq60T2uriO8BenwyvsF3BnDqTbKf4voohZ1DNfzdbT1J
+Fj8B62FrDmxcO+sp1/b5HUCJP6y2uSRCmzOHe5k7Pk1IEi72FgBpKXSRkFibRlVf
+634g7mgsPZAQ9PJEsv4Qvm05T9L6+Gmq6N3bMVLKRXs4RhDhaFbYH9GtUg1eI0yH
+YjGyRfqzW/nqVMstOLHt8CuPouq4p7eMzeDH3YHkxPm4GG5foCXMOd2DZrW0SCcr
+7dhFeNVWzQ2m53eOhBzNQX+v3pgjVStsePhBRt2LyGfwkNzmqDgqWsMzSHRMY+cn
+WQIDAQAB
+-----END PUBLIC KEY-----

modules/account/src/main/scala/de/nowchess/account/client/CoreGameClient.scala

@@ -0,0 +1,27 @@
+package de.nowchess.account.client
+
+import de.nowchess.security.InternalSecretClientFilter
+import jakarta.ws.rs.*
+import jakarta.ws.rs.core.MediaType
+import org.eclipse.microprofile.rest.client.annotation.RegisterProvider
+import org.eclipse.microprofile.rest.client.inject.RegisterRestClient
+
+case class CorePlayerInfo(id: String, displayName: String)
+case class CoreTimeControl(limitSeconds: Option[Int], incrementSeconds: Option[Int], daysPerMove: Option[Int])
+case class CoreCreateGameRequest(
+    white: Option[CorePlayerInfo],
+    black: Option[CorePlayerInfo],
+    timeControl: Option[CoreTimeControl],
+    mode: Option[String],
+)
+case class CoreGameResponse(gameId: String)
+
+@Path("/api/board/game")
+@RegisterRestClient(configKey = "core-service")
+@RegisterProvider(classOf[InternalSecretClientFilter])
+trait CoreGameClient:
+
+  @POST
+  @Consumes(Array(MediaType.APPLICATION_JSON))
+  @Produces(Array(MediaType.APPLICATION_JSON))
+  def createGame(req: CoreCreateGameRequest): CoreGameResponse

modules/account/src/main/scala/de/nowchess/account/config/JacksonConfig.scala

@@ -0,0 +1,17 @@
+package de.nowchess.account.config
+
+import com.fasterxml.jackson.core.Version
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.module.scala.DefaultScalaModule
+import io.quarkus.jackson.ObjectMapperCustomizer
+import jakarta.inject.Singleton
+
+@Singleton
+class JacksonConfig extends ObjectMapperCustomizer:
+  def customize(mapper: ObjectMapper): Unit =
+    mapper.registerModule(new DefaultScalaModule() {
+      override def version(): Version =
+        // scalafix:off DisableSyntax.null
+        new Version(2, 21, 1, null, "com.fasterxml.jackson.module", "jackson-module-scala")
+        // scalafix:on DisableSyntax.null
+    })

modules/account/src/main/scala/de/nowchess/account/config/NativeReflectionConfig.scala

@@ -0,0 +1,50 @@
+package de.nowchess.account.config
+
+import de.nowchess.account.client.{CoreCreateGameRequest, CoreGameResponse, CorePlayerInfo, CoreTimeControl}
+import de.nowchess.account.domain.{
+  BotAccount,
+  Challenge,
+  ChallengeColor,
+  ChallengeStatus,
+  DeclineReason,
+  OfficialBotAccount,
+  TimeControl,
+  UserAccount,
+}
+import de.nowchess.account.dto.*
+import io.quarkus.runtime.annotations.RegisterForReflection
+
+@RegisterForReflection(
+  targets = Array(
+    classOf[UserAccount],
+    classOf[BotAccount],
+    classOf[OfficialBotAccount],
+    classOf[Challenge],
+    classOf[ChallengeColor],
+    classOf[ChallengeStatus],
+    classOf[DeclineReason],
+    classOf[TimeControl],
+    classOf[LoginRequest],
+    classOf[TokenResponse],
+    classOf[PlayerInfo],
+    classOf[PublicAccountDto],
+    classOf[BotAccountDto],
+    classOf[BotAccountWithTokenDto],
+    classOf[OfficialBotAccountDto],
+    classOf[CreateBotAccountRequest],
+    classOf[UpdateBotNameRequest],
+    classOf[RotatedTokenDto],
+    classOf[TimeControlDto],
+    classOf[ChallengeRequest],
+    classOf[ChallengeDto],
+    classOf[DeclineRequest],
+    classOf[ChallengeListDto],
+    classOf[ErrorDto],
+    classOf[CorePlayerInfo],
+    classOf[CoreTimeControl],
+    classOf[CoreCreateGameRequest],
+    classOf[CoreGameResponse],
+    classOf[OfficialChallengeResponse],
+  ),
+)
+class NativeReflectionConfig

modules/account/src/main/scala/de/nowchess/account/config/RedisConfig.scala

@@ -0,0 +1,12 @@
+package de.nowchess.account.config
+
+import jakarta.enterprise.context.ApplicationScoped
+import org.eclipse.microprofile.config.inject.ConfigProperty
+import scala.compiletime.uninitialized
+
+@ApplicationScoped
+class RedisConfig:
+  // scalafix:off DisableSyntax.var
+  @ConfigProperty(name = "nowchess.redis.prefix", defaultValue = "nowchess")
+  var prefix: String = uninitialized
+  // scalafix:on DisableSyntax.var

modules/account/src/main/scala/de/nowchess/account/domain/Challenge.scala

@@ -0,0 +1,56 @@
+package de.nowchess.account.domain
+
+import io.quarkus.hibernate.orm.panache.PanacheEntityBase
+import jakarta.persistence.*
+import scala.compiletime.uninitialized
+
+import java.time.Instant
+import java.util.UUID
+import scala.Conversion
+
+@Entity
+@Table(name = "challenges")
+class Challenge extends PanacheEntityBase:
+  // scalafix:off DisableSyntax.var
+  @Id
+  @GeneratedValue(strategy = GenerationType.UUID)
+  var id: UUID = uninitialized
+
+  @ManyToOne
+  var challenger: UserAccount = uninitialized
+
+  @ManyToOne
+  var destUser: UserAccount = uninitialized
+
+  @Convert(converter = classOf[ChallengeColorConverter])
+  @Column(columnDefinition = "varchar(255)")
+  var color: ChallengeColor = uninitialized
+
+  @Convert(converter = classOf[ChallengeStatusConverter])
+  @Column(columnDefinition = "varchar(255)")
+  var status: ChallengeStatus = uninitialized
+
+  @Convert(converter = classOf[DeclineReasonConverter])
+  @Column(nullable = true, columnDefinition = "varchar(255)")
+  var declineReason: DeclineReason = uninitialized
+
+  var timeControlType: String = uninitialized
+
+  @Column(nullable = true)
+  var timeControlLimit: java.lang.Integer = uninitialized
+
+  @Column(nullable = true)
+  var timeControlIncrement: java.lang.Integer = uninitialized
+
+  var createdAt: Instant = uninitialized
+
+  var expiresAt: Instant = uninitialized
+
+  @Column(nullable = true)
+  var gameId: String = uninitialized
+  // scalafix:on
+
+  def gameIdOpt: Option[String]               = Option(gameId)
+  def declineReasonOpt: Option[DeclineReason] = Option(declineReason)
+  def timeControlLimitOpt: Option[Int]        = Option(timeControlLimit).map(_.intValue())
+  def timeControlIncrementOpt: Option[Int]    = Option(timeControlIncrement).map(_.intValue())

modules/account/src/main/scala/de/nowchess/account/domain/ChallengeColor.scala

@@ -0,0 +1,4 @@
+package de.nowchess.account.domain
+
+enum ChallengeColor:
+  case White, Black, Random

modules/account/src/main/scala/de/nowchess/account/domain/ChallengeColorConverter.scala

@@ -0,0 +1,12 @@
+package de.nowchess.account.domain
+
+import jakarta.persistence.AttributeConverter
+import jakarta.persistence.Converter
+
+@Converter(autoApply = true)
+class ChallengeColorConverter extends AttributeConverter[ChallengeColor, String]:
+  override def convertToDatabaseColumn(attribute: ChallengeColor): String =
+    Option(attribute).map(_.toString).orNull
+
+  override def convertToEntityAttribute(dbData: String): ChallengeColor =
+    Option(dbData).map(ChallengeColor.valueOf).orNull

modules/account/src/main/scala/de/nowchess/account/domain/ChallengeStatus.scala

@@ -0,0 +1,4 @@
+package de.nowchess.account.domain
+
+enum ChallengeStatus:
+  case Created, Canceled, Declined, Accepted

modules/account/src/main/scala/de/nowchess/account/domain/ChallengeStatusConverter.scala

@@ -0,0 +1,12 @@
+package de.nowchess.account.domain
+
+import jakarta.persistence.AttributeConverter
+import jakarta.persistence.Converter
+
+@Converter(autoApply = true)
+class ChallengeStatusConverter extends AttributeConverter[ChallengeStatus, String]:
+  override def convertToDatabaseColumn(attribute: ChallengeStatus): String =
+    Option(attribute).map(_.toString).orNull
+
+  override def convertToEntityAttribute(dbData: String): ChallengeStatus =
+    Option(dbData).map(ChallengeStatus.valueOf).orNull

modules/account/src/main/scala/de/nowchess/account/domain/DeclineReason.scala

@@ -0,0 +1,4 @@
+package de.nowchess.account.domain
+
+enum DeclineReason:
+  case Generic, Later, TooFast, TooSlow, TimeControl, Rated, Casual, Standard, Variant, NoBot, OnlyBot

modules/account/src/main/scala/de/nowchess/account/domain/DeclineReasonConverter.scala

@@ -0,0 +1,12 @@
+package de.nowchess.account.domain
+
+import jakarta.persistence.AttributeConverter
+import jakarta.persistence.Converter
+
+@Converter(autoApply = true)
+class DeclineReasonConverter extends AttributeConverter[DeclineReason, String]:
+  override def convertToDatabaseColumn(attribute: DeclineReason): String =
+    Option(attribute).map(_.toString).orNull
+
+  override def convertToEntityAttribute(dbData: String): DeclineReason =
+    Option(dbData).map(DeclineReason.valueOf).orNull

modules/account/src/main/scala/de/nowchess/account/domain/TimeControl.scala

@@ -0,0 +1,7 @@
+package de.nowchess.account.domain
+
+sealed trait TimeControl
+
+object TimeControl:
+  case class Clock(limit: Int, increment: Int) extends TimeControl
+  case object Unlimited                        extends TimeControl

modules/account/src/main/scala/de/nowchess/account/domain/UserAccount.scala

@@ -0,0 +1,78 @@
+package de.nowchess.account.domain
+
+import io.quarkus.hibernate.orm.panache.PanacheEntityBase
+import jakarta.persistence.*
+import scala.compiletime.uninitialized
+import scala.jdk.CollectionConverters.*
+
+import java.time.Instant
+import java.util.UUID
+
+@Entity
+@Table(name = "user_accounts")
+class UserAccount extends PanacheEntityBase:
+  // scalafix:off DisableSyntax.var
+  @Id
+  @GeneratedValue(strategy = GenerationType.UUID)
+  var id: UUID = uninitialized
+
+  @Column(unique = true, nullable = false)
+  var username: String = uninitialized
+
+  @Column(unique = true, nullable = false)
+  var email: String = uninitialized
+
+  var passwordHash: String = uninitialized
+
+  var rating: Int = 1500
+
+  var createdAt: Instant = uninitialized
+
+  var banned: Boolean = false
+
+  @OneToMany(mappedBy = "owner", cascade = Array(CascadeType.ALL), orphanRemoval = true)
+  var botAccounts: java.util.List[BotAccount] = uninitialized
+  // scalafix:on
+
+  def getBotAccounts: List[BotAccount] = Option(botAccounts).map(_.asScala.toList).getOrElse(Nil)
+
+@Entity
+@Table(name = "bot_accounts")
+class BotAccount extends PanacheEntityBase:
+  // scalafix:off DisableSyntax.var
+  @Id
+  @GeneratedValue(strategy = GenerationType.UUID)
+  var id: UUID = uninitialized
+
+  @Column(nullable = false)
+  var name: String = uninitialized
+
+  @ManyToOne(optional = false)
+  @JoinColumn(name = "owner_id", nullable = false)
+  var owner: UserAccount = uninitialized
+
+  @Column(unique = true, nullable = false, length = 256)
+  var token: String = uninitialized
+
+  var rating: Int = 1500
+
+  var createdAt: Instant = uninitialized
+
+  var banned: Boolean = false
+  // scalafix:on
+
+@Entity
+@Table(name = "official_bot_accounts")
+class OfficialBotAccount extends PanacheEntityBase:
+  // scalafix:off DisableSyntax.var
+  @Id
+  @GeneratedValue(strategy = GenerationType.UUID)
+  var id: UUID = uninitialized
+
+  @Column(nullable = false)
+  var name: String = uninitialized
+
+  var rating: Int = 1500
+
+  var createdAt: Instant = uninitialized
+  // scalafix:on

modules/account/src/main/scala/de/nowchess/account/dto/Dtos.scala

@@ -0,0 +1,49 @@
+package de.nowchess.account.dto
+
+case class RegisterRequest(username: String, email: String, password: String)
+
+case class LoginRequest(username: String, password: String)
+
+case class TokenResponse(token: String)
+
+case class PlayerInfo(id: String, name: String, rating: Int)
+
+case class PublicAccountDto(id: String, username: String, rating: Int, createdAt: String)
+
+case class TimeControlDto(`type`: String, limit: Option[Int], increment: Option[Int])
+
+case class ChallengeRequest(color: String, timeControl: TimeControlDto)
+
+case class ChallengeDto(
+    id: String,
+    challenger: PlayerInfo,
+    destUser: PlayerInfo,
+    variant: String,
+    color: String,
+    timeControl: TimeControlDto,
+    status: String,
+    declineReason: Option[String],
+    gameId: Option[String],
+    createdAt: String,
+    expiresAt: String,
+)
+
+case class DeclineRequest(reason: Option[String])
+
+case class ChallengeListDto(in: List[ChallengeDto], out: List[ChallengeDto])
+
+case class ErrorDto(error: String)
+
+case class CreateBotAccountRequest(name: String)
+
+case class UpdateBotNameRequest(name: String)
+
+case class BotAccountDto(id: String, name: String, rating: Int, createdAt: String)
+
+case class BotAccountWithTokenDto(id: String, name: String, rating: Int, token: String, createdAt: String)
+
+case class RotatedTokenDto(token: String)
+
+case class OfficialBotAccountDto(id: String, name: String, rating: Int, createdAt: String)
+
+case class OfficialChallengeResponse(gameId: String, botName: String, difficulty: Int)

modules/account/src/main/scala/de/nowchess/account/error/AccountError.scala

@@ -0,0 +1,23 @@
+package de.nowchess.account.error
+
+enum AccountError:
+  case UsernameTaken(username: String)
+  case EmailAlreadyRegistered(email: String)
+  case InvalidCredentials
+  case UserNotFound
+  case BotNotFound
+  case BotLimitExceeded
+  case NotAuthorized
+  case UserBanned
+  case BotBanned
+
+  def message: String = this match
+    case UsernameTaken(u)          => s"Username '$u' is already taken"
+    case EmailAlreadyRegistered(e) => s"Email '$e' is already registered"
+    case InvalidCredentials        => "Invalid credentials"
+    case UserNotFound              => "User not found"
+    case BotNotFound               => "Bot account not found"
+    case BotLimitExceeded          => "Maximum of 5 bot accounts per user exceeded"
+    case NotAuthorized             => "Not authorized to perform this action"
+    case UserBanned                => "User account is banned"
+    case BotBanned                 => "Bot account is banned"

modules/account/src/main/scala/de/nowchess/account/error/ChallengeError.scala

@@ -0,0 +1,25 @@
+package de.nowchess.account.error
+
+enum ChallengeError:
+  case UserNotFound(username: String)
+  case ChallengerNotFound
+  case CannotChallengeSelf
+  case DuplicateChallenge
+  case InvalidColor(color: String)
+  case InvalidDeclineReason(reason: String)
+  case ChallengeNotFound
+  case ChallengeNotActive
+  case NotAuthorized
+  case GameCreationFailed
+
+  def message: String = this match
+    case UserNotFound(u)         => s"User '$u' not found"
+    case ChallengerNotFound      => "Challenger not found"
+    case CannotChallengeSelf     => "Cannot challenge yourself"
+    case DuplicateChallenge      => "Active challenge to this user already exists"
+    case InvalidColor(c)         => s"Unknown color: $c"
+    case InvalidDeclineReason(r) => s"Unknown decline reason: $r"
+    case ChallengeNotFound       => "Challenge not found"
+    case ChallengeNotActive      => "Challenge is not active"
+    case NotAuthorized           => "Not authorized"
+    case GameCreationFailed      => "Failed to create game"

modules/account/src/main/scala/de/nowchess/account/filter/AlreadyLoggedInFilter.scala

@@ -0,0 +1,43 @@
+package de.nowchess.account.filter
+
+import jakarta.enterprise.context.ApplicationScoped
+import jakarta.inject.Inject
+import jakarta.ws.rs.container.{ContainerRequestContext, ContainerRequestFilter}
+import jakarta.ws.rs.core.Response
+import jakarta.ws.rs.ext.Provider
+import org.eclipse.microprofile.jwt.JsonWebToken
+import scala.compiletime.uninitialized
+
+@Provider
+@ApplicationScoped
+class AlreadyLoggedInFilter extends ContainerRequestFilter:
+
+  @Inject
+  // scalafix:off DisableSyntax.var
+  var jwt: JsonWebToken = uninitialized
+  // scalafix:on
+
+  override def filter(context: ContainerRequestContext): Unit =
+    val path   = context.getUriInfo.getPath
+    val method = context.getMethod
+
+    if isProtectedEndpoint(path, method) && isAuthenticated then
+      context.abortWith(
+        Response
+          .status(Response.Status.BAD_REQUEST)
+          .entity("""{"error":"Already logged in"}""")
+          .build(),
+      )
+
+  private def isAuthenticated: Boolean =
+    // scalafix:off DisableSyntax.null
+    try jwt.getName != null
+    catch
+      case _ => false
+      // scalafix:on DisableSyntax.null
+
+  private def isProtectedEndpoint(path: String, method: String): Boolean =
+    (path.contains("/api/account") || path.contains("/account")) &&
+      ((path.endsWith("/api/account") && method == "POST") ||
+        (path.endsWith("/account") && method == "POST") ||
+        (path.contains("/login") && method == "POST"))

modules/account/src/main/scala/de/nowchess/account/repository/AccountRepository.scala

@@ -0,0 +1,98 @@
+package de.nowchess.account.repository
+
+import de.nowchess.account.domain.{BotAccount, OfficialBotAccount, UserAccount}
+import jakarta.enterprise.context.ApplicationScoped
+import jakarta.inject.Inject
+import jakarta.persistence.EntityManager
+
+import java.util.UUID
+import scala.jdk.CollectionConverters.*
+
+@ApplicationScoped
+class UserAccountRepository:
+
+  @Inject
+  // scalafix:off DisableSyntax.var
+  var em: EntityManager = scala.compiletime.uninitialized
+  // scalafix:on
+
+  def findByUsername(username: String): Option[UserAccount] =
+    em.createQuery("FROM UserAccount WHERE username = :username", classOf[UserAccount])
+      .setParameter("username", username)
+      .getResultList
+      .stream()
+      .findFirst()
+      .map(Option(_))
+      .orElse(None)
+
+  def findById(id: UUID): Option[UserAccount] =
+    Option(em.find(classOf[UserAccount], id))
+
+  def persist(account: UserAccount): UserAccount =
+    em.persist(account)
+    account
+
+  def findByEmail(email: String): Option[UserAccount] =
+    em.createQuery("FROM UserAccount WHERE email = :email", classOf[UserAccount])
+      .setParameter("email", email)
+      .getResultList
+      .asScala
+      .headOption
+
+  def findAll(): List[UserAccount] =
+    em.createQuery("FROM UserAccount", classOf[UserAccount]).getResultList.asScala.toList
+
+@ApplicationScoped
+class BotAccountRepository:
+
+  @Inject
+  // scalafix:off DisableSyntax.var
+  var em: EntityManager = scala.compiletime.uninitialized
+  // scalafix:on
+
+  def findById(id: UUID): Option[BotAccount] =
+    Option(em.find(classOf[BotAccount], id))
+
+  def findByOwner(ownerId: UUID): List[BotAccount] =
+    em.createQuery("FROM BotAccount WHERE owner.id = :ownerId", classOf[BotAccount])
+      .setParameter("ownerId", ownerId)
+      .getResultList
+      .asScala
+      .toList
+
+  def persist(bot: BotAccount): BotAccount =
+    em.persist(bot)
+    bot
+
+  def delete(botId: UUID): Unit =
+    em.find(classOf[BotAccount], botId) match
+      case bot: BotAccount => em.remove(bot)
+
+  def findByToken(token: String): Option[BotAccount] =
+    em.createQuery("FROM BotAccount WHERE token = :token", classOf[BotAccount])
+      .setParameter("token", token)
+      .getResultList
+      .asScala
+      .headOption
+
+@ApplicationScoped
+class OfficialBotAccountRepository:
+
+  @Inject
+  // scalafix:off DisableSyntax.var
+  var em: EntityManager = scala.compiletime.uninitialized
+  // scalafix:on
+
+  def findById(id: UUID): Option[OfficialBotAccount] =
+    Option(em.find(classOf[OfficialBotAccount], id))
+
+  def findAll(): List[OfficialBotAccount] =
+    em.createQuery("FROM OfficialBotAccount", classOf[OfficialBotAccount]).getResultList.asScala.toList
+
+  def persist(bot: OfficialBotAccount): OfficialBotAccount =
+    em.persist(bot)
+    bot
+
+  def delete(botId: UUID): Unit =
+    em.find(classOf[OfficialBotAccount], botId) match
+      case bot: OfficialBotAccount => em.remove(bot)

modules/account/src/main/scala/de/nowchess/account/repository/ChallengeRepository.scala

@@ -0,0 +1,62 @@
+package de.nowchess.account.repository
+
+import de.nowchess.account.domain.{Challenge, ChallengeStatus}
+import jakarta.enterprise.context.ApplicationScoped
+import jakarta.inject.Inject
+import jakarta.persistence.EntityManager
+
+import java.time.Instant
+import java.util.UUID
+import scala.jdk.CollectionConverters.*
+
+@ApplicationScoped
+class ChallengeRepository:
+
+  @Inject
+  // scalafix:off DisableSyntax.var
+  var em: EntityManager = scala.compiletime.uninitialized
+  // scalafix:on
+
+  def findActiveByChallengerId(challengerId: UUID): List[Challenge] =
+    em.createQuery(
+      "FROM Challenge WHERE challenger.id = :cid AND status = :status AND expiresAt > :now",
+      classOf[Challenge],
+    ).setParameter("cid", challengerId)
+      .setParameter("status", ChallengeStatus.Created)
+      .setParameter("now", Instant.now())
+      .getResultList
+      .asScala
+      .toList
+
+  def findActiveByDestUserId(destUserId: UUID): List[Challenge] =
+    em.createQuery(
+      "FROM Challenge WHERE destUser.id = :uid AND status = :status AND expiresAt > :now",
+      classOf[Challenge],
+    ).setParameter("uid", destUserId)
+      .setParameter("status", ChallengeStatus.Created)
+      .setParameter("now", Instant.now())
+      .getResultList
+      .asScala
+      .toList
+
+  def findDuplicateChallenge(challengerId: UUID, destUserId: UUID): Option[Challenge] =
+    em.createQuery(
+      "FROM Challenge WHERE challenger.id = :cid AND destUser.id = :uid AND status = :status AND expiresAt > :now",
+      classOf[Challenge],
+    ).setParameter("cid", challengerId)
+      .setParameter("uid", destUserId)
+      .setParameter("status", ChallengeStatus.Created)
+      .setParameter("now", Instant.now())
+      .getResultList
+      .asScala
+      .headOption
+
+  def findById(id: UUID): Option[Challenge] =
+    Option(em.find(classOf[Challenge], id))
+
+  def persist(challenge: Challenge): Challenge =
+    em.persist(challenge)
+    challenge
+
+  def merge(challenge: Challenge): Challenge =
+    em.merge(challenge)

modules/account/src/main/scala/de/nowchess/account/resource/AccountResource.scala

@@ -0,0 +1,202 @@
+package de.nowchess.account.resource
+
+import de.nowchess.account.domain.{BotAccount, OfficialBotAccount, UserAccount}
+import de.nowchess.account.dto.*
+import de.nowchess.account.error.AccountError
+import de.nowchess.account.service.AccountService
+import jakarta.annotation.security.RolesAllowed
+import jakarta.enterprise.context.ApplicationScoped
+import jakarta.inject.Inject
+import jakarta.ws.rs.*
+import jakarta.ws.rs.core.{MediaType, Response}
+import org.eclipse.microprofile.jwt.JsonWebToken
+import scala.compiletime.uninitialized
+
+import java.util.UUID
+
+@Path("/api/account")
+@ApplicationScoped
+@Consumes(Array(MediaType.APPLICATION_JSON))
+@Produces(Array(MediaType.APPLICATION_JSON))
+class AccountResource:
+
+  // scalafix:off DisableSyntax.var
+  @Inject
+  var accountService: AccountService = uninitialized
+
+  @Inject
+  var jwt: JsonWebToken = uninitialized
+  // scalafix:on
+
+  @POST
+  def register(req: RegisterRequest): Response =
+    accountService.register(req) match
+      case Right(account) =>
+        Response.ok(toPublicDto(account)).build()
+      case Left(error) =>
+        Response.status(Response.Status.CONFLICT).entity(ErrorDto(error.message)).build()
+
+  @POST
+  @Path("/login")
+  def login(req: LoginRequest): Response =
+    accountService.login(req) match
+      case Right(token) =>
+        Response.ok(TokenResponse(token)).build()
+      case Left(AccountError.UserBanned) =>
+        Response.status(Response.Status.FORBIDDEN).entity(ErrorDto(AccountError.UserBanned.message)).build()
+      case Left(error) =>
+        Response.status(Response.Status.UNAUTHORIZED).entity(ErrorDto(error.message)).build()
+
+  @GET
+  @Path("/me")
+  @RolesAllowed(Array("**"))
+  def me(): Response =
+    val id = UUID.fromString(jwt.getSubject)
+    accountService.findById(id) match
+      case Some(account) => Response.ok(toPublicDto(account)).build()
+      case None          => Response.status(Response.Status.NOT_FOUND).build()
+
+  @GET
+  @Path("/{username}")
+  def publicProfile(@PathParam("username") username: String): Response =
+    accountService.findByUsername(username) match
+      case Some(account) => Response.ok(toPublicDto(account)).build()
+      case None          => Response.status(Response.Status.NOT_FOUND).build()
+
+  @POST
+  @Path("/{userId}/ban")
+  @RolesAllowed(Array("Admin"))
+  def banUser(@PathParam("userId") userId: String): Response =
+    accountService.banUser(UUID.fromString(userId)) match
+      case Right(user) => Response.ok(toPublicDto(user)).build()
+      case Left(error) =>
+        Response.status(Response.Status.NOT_FOUND).entity(ErrorDto(error.message)).build()
+
+  @POST
+  @Path("/{userId}/unban")
+  @RolesAllowed(Array("Admin"))
+  def unbanUser(@PathParam("userId") userId: String): Response =
+    accountService.unbanUser(UUID.fromString(userId)) match
+      case Right(user) => Response.ok(toPublicDto(user)).build()
+      case Left(error) =>
+        Response.status(Response.Status.NOT_FOUND).entity(ErrorDto(error.message)).build()
+
+  @POST
+  @Path("/bots")
+  @RolesAllowed(Array("**"))
+  def createBotAccount(req: CreateBotAccountRequest): Response =
+    val ownerId = UUID.fromString(jwt.getSubject)
+    accountService.createBotAccount(ownerId, req.name) match
+      case Right(bot) =>
+        Response.status(Response.Status.CREATED).entity(toBotDtoWithToken(bot)).build()
+      case Left(error) =>
+        val status = error match
+          case AccountError.BotLimitExceeded => Response.Status.BAD_REQUEST
+          case _                             => Response.Status.INTERNAL_SERVER_ERROR
+        Response.status(status).entity(ErrorDto(error.message)).build()
+
+  @GET
+  @Path("/bots")
+  @RolesAllowed(Array("**"))
+  def listBotAccounts(): Response =
+    val ownerId = UUID.fromString(jwt.getSubject)
+    val bots    = accountService.getBotAccounts(ownerId)
+    Response.ok(bots.map(toBotDto)).build()
+
+  @PUT
+  @Path("/bots/{botId}")
+  @RolesAllowed(Array("**"))
+  def updateBotName(@PathParam("botId") botId: String, req: UpdateBotNameRequest): Response =
+    val ownerId = UUID.fromString(jwt.getSubject)
+    accountService.updateBotName(UUID.fromString(botId), ownerId, req.name) match
+      case Right(bot) => Response.ok(toBotDto(bot)).build()
+      case Left(AccountError.NotAuthorized) =>
+        Response.status(Response.Status.FORBIDDEN).entity(ErrorDto(AccountError.NotAuthorized.message)).build()
+      case Left(error) =>
+        Response.status(Response.Status.NOT_FOUND).entity(ErrorDto(error.message)).build()
+
+  @POST
+  @Path("/bots/{botId}/rotate-token")
+  @RolesAllowed(Array("**"))
+  def rotateBotToken(@PathParam("botId") botId: String): Response =
+    val ownerId = UUID.fromString(jwt.getSubject)
+    accountService.rotateBotToken(UUID.fromString(botId), ownerId) match
+      case Right(bot) => Response.ok(RotatedTokenDto(bot.token)).build()
+      case Left(AccountError.NotAuthorized) =>
+        Response.status(Response.Status.FORBIDDEN).entity(ErrorDto(AccountError.NotAuthorized.message)).build()
+      case Left(error) =>
+        Response.status(Response.Status.NOT_FOUND).entity(ErrorDto(error.message)).build()
+
+  @DELETE
+  @Path("/bots/{botId}")
+  @RolesAllowed(Array("**"))
+  def deleteBotAccount(@PathParam("botId") botId: String): Response =
+    val ownerId = UUID.fromString(jwt.getSubject)
+    val botUuid = UUID.fromString(botId)
+    accountService.getBotAccountWithOwnerCheck(botUuid, ownerId) match
+      case None => Response.status(Response.Status.NOT_FOUND).entity(ErrorDto(AccountError.BotNotFound.message)).build()
+      case Some(None) =>
+        Response.status(Response.Status.FORBIDDEN).entity(ErrorDto(AccountError.NotAuthorized.message)).build()
+      case Some(Some(_)) =>
+        accountService.deleteBotAccount(botUuid) match
+          case Right(_) => Response.noContent().build()
+          case Left(error) =>
+            Response.status(Response.Status.NOT_FOUND).entity(ErrorDto(error.message)).build()
+
+  private def toPublicDto(account: UserAccount): PublicAccountDto =
+    PublicAccountDto(
+      id = account.id.toString,
+      username = account.username,
+      rating = account.rating,
+      createdAt = account.createdAt.toString,
+    )
+
+  private def toBotDto(bot: BotAccount): BotAccountDto =
+    BotAccountDto(
+      id = bot.id.toString,
+      name = bot.name,
+      rating = bot.rating,
+      createdAt = bot.createdAt.toString,
+    )
+
+  private def toBotDtoWithToken(bot: BotAccount): BotAccountWithTokenDto =
+    BotAccountWithTokenDto(
+      id = bot.id.toString,
+      name = bot.name,
+      rating = bot.rating,
+      token = bot.token,
+      createdAt = bot.createdAt.toString,
+    )
+
+  @GET
+  @Path("/official-bots")
+  def getOfficialBots: Response =
+    val bots = accountService.getOfficialBotAccounts()
+    Response.ok(bots.map(toOfficialBotDto)).build()
+
+  @POST
+  @Path("/official-bots")
+  @RolesAllowed(Array("Admin"))
+  def createOfficialBot(req: CreateBotAccountRequest): Response =
+    accountService.createOfficialBotAccount(req.name) match
+      case Right(bot) =>
+        Response.status(Response.Status.CREATED).entity(toOfficialBotDto(bot)).build()
+      case Left(error) =>
+        Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(ErrorDto(error.message)).build()
+
+  @DELETE
+  @Path("/official-bots/{botId}")
+  @RolesAllowed(Array("Admin"))
+  def deleteOfficialBot(@PathParam("botId") botId: String): Response =
+    accountService.deleteOfficialBotAccount(UUID.fromString(botId)) match
+      case Right(_) => Response.noContent().build()
+      case Left(error) =>
+        Response.status(Response.Status.NOT_FOUND).entity(ErrorDto(error.message)).build()
+
+  private def toOfficialBotDto(bot: OfficialBotAccount): OfficialBotAccountDto =
+    OfficialBotAccountDto(
+      id = bot.id.toString,
+      name = bot.name,
+      rating = bot.rating,
+      createdAt = bot.createdAt.toString,
+    )

modules/account/src/main/scala/de/nowchess/account/resource/ChallengeResource.scala

@@ -0,0 +1,88 @@
+package de.nowchess.account.resource
+
+import de.nowchess.account.dto.*
+import de.nowchess.account.error.ChallengeError
+import de.nowchess.account.service.ChallengeService
+import jakarta.annotation.security.RolesAllowed
+import jakarta.enterprise.context.ApplicationScoped
+import jakarta.inject.Inject
+import jakarta.ws.rs.*
+import jakarta.ws.rs.core.{MediaType, Response}
+import org.eclipse.microprofile.jwt.JsonWebToken
+import scala.compiletime.uninitialized
+
+import java.util.UUID
+
+@Path("/api/challenge")
+@ApplicationScoped
+@RolesAllowed(Array("**"))
+@Consumes(Array(MediaType.APPLICATION_JSON))
+@Produces(Array(MediaType.APPLICATION_JSON))
+class ChallengeResource:
+
+  // scalafix:off DisableSyntax.var
+  @Inject
+  var challengeService: ChallengeService = uninitialized
+
+  @Inject
+  var jwt: JsonWebToken = uninitialized
+  // scalafix:on
+
+  @POST
+  @Path("/{username}")
+  def create(@PathParam("username") username: String, req: ChallengeRequest): Response =
+    val userId = UUID.fromString(jwt.getSubject)
+    challengeService.create(userId, username, req) match
+      case Right(challenge) =>
+        Response.status(Response.Status.CREATED).entity(challengeService.toDto(challenge)).build()
+      case Left(error) =>
+        val status = error match
+          case ChallengeError.UserNotFound(_) | ChallengeError.ChallengerNotFound => Response.Status.NOT_FOUND
+          case ChallengeError.CannotChallengeSelf                                 => Response.Status.BAD_REQUEST
+          case _                                                                  => Response.Status.CONFLICT
+        Response.status(status).entity(ErrorDto(error.message)).build()
+
+  @GET
+  def list(): Response =
+    val userId = UUID.fromString(jwt.getSubject)
+    Response.ok(challengeService.listForUser(userId)).build()
+
+  @GET
+  @Path("/{id}")
+  def get(@PathParam("id") id: UUID): Response =
+    val userId = UUID.fromString(jwt.getSubject)
+    challengeService.findById(id, userId) match
+      case Right(challenge) => Response.ok(challengeService.toDto(challenge)).build()
+      case Left(error)      => errorResponse(error)
+
+  @POST
+  @Path("/{id}/accept")
+  def accept(@PathParam("id") id: UUID): Response =
+    val userId = UUID.fromString(jwt.getSubject)
+    challengeService.accept(id, userId) match
+      case Right(challenge) => Response.ok(challengeService.toDto(challenge)).build()
+      case Left(error)      => errorResponse(error)
+
+  @POST
+  @Path("/{id}/decline")
+  def decline(@PathParam("id") id: UUID, req: DeclineRequest): Response =
+    val userId = UUID.fromString(jwt.getSubject)
+    challengeService.decline(id, userId, req) match
+      case Right(challenge) => Response.ok(challengeService.toDto(challenge)).build()
+      case Left(error)      => errorResponse(error)
+
+  @POST
+  @Path("/{id}/cancel")
+  def cancel(@PathParam("id") id: UUID): Response =
+    val userId = UUID.fromString(jwt.getSubject)
+    challengeService.cancel(id, userId) match
+      case Right(challenge) => Response.ok(challengeService.toDto(challenge)).build()
+      case Left(error)      => errorResponse(error)
+
+  private def errorResponse(error: ChallengeError): Response =
+    val status = error match
+      case ChallengeError.ChallengeNotFound  => Response.Status.NOT_FOUND
+      case ChallengeError.NotAuthorized      => Response.Status.FORBIDDEN
+      case ChallengeError.GameCreationFailed => Response.Status.INTERNAL_SERVER_ERROR
+      case _                                 => Response.Status.BAD_REQUEST
+    Response.status(status).entity(ErrorDto(error.message)).build()

modules/account/src/main/scala/de/nowchess/account/resource/OfficialChallengeResource.scala

@@ -0,0 +1,91 @@
+package de.nowchess.account.resource
+
+import de.nowchess.account.client.{CoreCreateGameRequest, CoreGameClient, CorePlayerInfo}
+import de.nowchess.account.dto.{ErrorDto, OfficialChallengeResponse}
+import de.nowchess.account.service.{AccountService, EventPublisher}
+import jakarta.annotation.security.RolesAllowed
+import jakarta.enterprise.context.ApplicationScoped
+import jakarta.inject.Inject
+import jakarta.ws.rs.*
+import jakarta.ws.rs.core.{MediaType, Response}
+import org.eclipse.microprofile.jwt.JsonWebToken
+import org.eclipse.microprofile.rest.client.inject.RestClient
+import org.jboss.logging.Logger
+import scala.compiletime.uninitialized
+
+import java.util.UUID
+import java.util.concurrent.ThreadLocalRandom
+
+@Path("/api/challenge/official")
+@ApplicationScoped
+@RolesAllowed(Array("**"))
+@Consumes(Array(MediaType.APPLICATION_JSON))
+@Produces(Array(MediaType.APPLICATION_JSON))
+class OfficialChallengeResource:
+
+  // scalafix:off DisableSyntax.var
+  @Inject var accountService: AccountService    = uninitialized
+  @Inject var jwt: JsonWebToken                 = uninitialized
+  @Inject var botEventPublisher: EventPublisher = uninitialized
+
+  @Inject
+  @RestClient
+  var coreGameClient: CoreGameClient = uninitialized
+  // scalafix:on
+
+  private val log = Logger.getLogger(classOf[OfficialChallengeResource])
+
+  @POST
+  @Path("/{botName}")
+  def challengeWithDifficulty(
+      @PathParam("botName") botName: String,
+      @QueryParam("difficulty") difficulty: Int,
+      @QueryParam("color") color: String,
+  ): Response =
+    if difficulty < 1000 || difficulty > 2800 then
+      Response
+        .status(Response.Status.BAD_REQUEST)
+        .entity(ErrorDto("difficulty must be between 1000 and 2800"))
+        .build()
+    else
+      val normalizedColor = Option(color).map(_.toLowerCase).getOrElse("random")
+      normalizedColor match
+        case "white" | "black" | "random" =>
+          val userId  = UUID.fromString(jwt.getSubject)
+          val botOpt  = accountService.getOfficialBotAccounts().find(_.name == botName)
+          val userOpt = accountService.findById(userId)
+
+          (botOpt, userOpt) match
+            case (None, _) =>
+              Response.status(Response.Status.NOT_FOUND).entity(ErrorDto(s"Official bot '$botName' not found")).build()
+            case (_, None) =>
+              Response.status(Response.Status.NOT_FOUND).entity(ErrorDto("User not found")).build()
+            case (Some(bot), Some(user)) =>
+              val userIsWhite = normalizedColor match
+                case "white" => true
+                case "black" => false
+                case _       => ThreadLocalRandom.current().nextBoolean()
+              val (white, black, botColor) =
+                if userIsWhite then
+                  (CorePlayerInfo(user.id.toString, user.username), CorePlayerInfo(bot.id.toString, bot.name), "black")
+                else
+                  (CorePlayerInfo(bot.id.toString, bot.name), CorePlayerInfo(user.id.toString, user.username), "white")
+              val req = CoreCreateGameRequest(Some(white), Some(black), None, Some("Authenticated"))
+              val gameId =
+                try Right(coreGameClient.createGame(req).gameId)
+                catch case _ => Left("Failed to create game")
+              gameId match
+                case Left(err) =>
+                  Response.status(Response.Status.INTERNAL_SERVER_ERROR).entity(ErrorDto(err)).build()
+                case Right(id) =>
+                  try botEventPublisher.publishGameStart(bot.name, id, botColor, difficulty, bot.id.toString)
+                  catch case ex: Exception => log.warnf(ex, "Failed to notify bot for game %s", id)
+                  Response
+                    .status(Response.Status.CREATED)
+                    .entity(OfficialChallengeResponse(id, botName, difficulty))
+                    .build()
+        case other =>
+          Response
+            .status(Response.Status.BAD_REQUEST)
+            .entity(ErrorDto(s"Invalid color: $other. Must be white, black or random"))
+            .build()

modules/account/src/main/scala/de/nowchess/account/service/AccountService.scala

@@ -0,0 +1,165 @@
+package de.nowchess.account.service
+
+import de.nowchess.account.domain.{BotAccount, OfficialBotAccount, UserAccount}
+import de.nowchess.account.dto.{LoginRequest, RegisterRequest}
+import de.nowchess.account.error.AccountError
+import de.nowchess.account.repository.{BotAccountRepository, OfficialBotAccountRepository, UserAccountRepository}
+import io.quarkus.elytron.security.common.BcryptUtil
+import io.smallrye.jwt.build.Jwt
+import jakarta.enterprise.context.ApplicationScoped
+import jakarta.inject.Inject
+import jakarta.transaction.Transactional
+import scala.compiletime.uninitialized
+
+import java.time.Instant
+import java.util.UUID
+
+@ApplicationScoped
+class AccountService:
+
+  // scalafix:off DisableSyntax.var
+  @Inject
+  var userAccountRepository: UserAccountRepository = uninitialized
+
+  @Inject
+  var botAccountRepository: BotAccountRepository = uninitialized
+
+  @Inject
+  var officialBotAccountRepository: OfficialBotAccountRepository = uninitialized
+  // scalafix:on
+
+  @Transactional
+  def register(req: RegisterRequest): Either[AccountError, UserAccount] =
+    if userAccountRepository.findByUsername(req.username).isDefined then Left(AccountError.UsernameTaken(req.username))
+    else if userAccountRepository.findByEmail(req.email).isDefined then
+      Left(AccountError.EmailAlreadyRegistered(req.email))
+    else
+      val account = new UserAccount()
+      account.username = req.username
+      account.email = req.email
+      account.passwordHash = BcryptUtil.bcryptHash(req.password)
+      account.createdAt = Instant.now()
+      userAccountRepository.persist(account)
+      Right(account)
+
+  def login(req: LoginRequest): Either[AccountError, String] =
+    userAccountRepository.findByUsername(req.username) match
+      case None => Left(AccountError.InvalidCredentials)
+      case Some(account) =>
+        if !BcryptUtil.matches(req.password, account.passwordHash) then Left(AccountError.InvalidCredentials)
+        else if account.banned then Left(AccountError.UserBanned)
+        else
+          Right(
+            Jwt
+              .issuer("nowchess")
+              .subject(account.id.toString)
+              .claim("username", account.username)
+              .sign(),
+          )
+
+  def findByUsername(username: String): Option[UserAccount] =
+    userAccountRepository.findByUsername(username)
+
+  def findById(id: UUID): Option[UserAccount] =
+    userAccountRepository.findById(id)
+
+  @Transactional
+  def createBotAccount(ownerId: UUID, botName: String): Either[AccountError, BotAccount] =
+    userAccountRepository.findById(ownerId) match
+      case None => Left(AccountError.UserNotFound)
+      case Some(owner) =>
+        val botAccounts = botAccountRepository.findByOwner(ownerId)
+        if botAccounts.length >= 5 then Left(AccountError.BotLimitExceeded)
+        else
+          val bot = new BotAccount()
+          bot.name = botName
+          bot.owner = owner
+          bot.token = generateBotToken(bot.id)
+          bot.createdAt = Instant.now()
+          botAccountRepository.persist(bot)
+          Right(bot)
+
+  def getBotAccounts(ownerId: UUID): List[BotAccount] =
+    botAccountRepository.findByOwner(ownerId)
+
+  def getBotAccountWithOwnerCheck(botId: UUID, ownerId: UUID): Option[Option[BotAccount]] =
+    botAccountRepository.findById(botId) match
+      case None      => Some(None)
+      case Some(bot) => Some(Option(bot).filter(_.owner.id == ownerId))
+
+  @Transactional
+  def deleteBotAccount(botId: UUID): Either[AccountError, Unit] =
+    botAccountRepository.findById(botId) match
+      case None => Left(AccountError.BotNotFound)
+      case Some(_) =>
+        botAccountRepository.delete(botId)
+        Right(())
+
+  @Transactional
+  def updateBotName(botId: UUID, ownerId: UUID, newName: String): Either[AccountError, BotAccount] =
+    botAccountRepository.findById(botId) match
+      case None => Left(AccountError.BotNotFound)
+      case Some(bot) =>
+        if bot.owner.id != ownerId then Left(AccountError.NotAuthorized)
+        else
+          bot.name = newName
+          botAccountRepository.persist(bot)
+          Right(bot)
+
+  @Transactional
+  def rotateBotToken(botId: UUID, ownerId: UUID): Either[AccountError, BotAccount] =
+    botAccountRepository.findById(botId) match
+      case None => Left(AccountError.BotNotFound)
+      case Some(bot) =>
+        if bot.owner.id != ownerId then Left(AccountError.NotAuthorized)
+        else
+          bot.token = generateBotToken(botId)
+          botAccountRepository.persist(bot)
+          Right(bot)
+
+  @Transactional
+  def createOfficialBotAccount(botName: String): Either[AccountError, OfficialBotAccount] =
+    val bot = new OfficialBotAccount()
+    bot.name = botName
+    bot.createdAt = Instant.now()
+    officialBotAccountRepository.persist(bot)
+    Right(bot)
+
+  def getOfficialBotAccounts(): List[OfficialBotAccount] =
+    officialBotAccountRepository.findAll()
+
+  @Transactional
+  def deleteOfficialBotAccount(botId: UUID): Either[AccountError, Unit] =
+    officialBotAccountRepository.findById(botId) match
+      case None => Left(AccountError.BotNotFound)
+      case Some(_) =>
+        officialBotAccountRepository.delete(botId)
+        Right(())
+
+  private def generateBotToken(botId: UUID): String =
+    Jwt
+      .issuer("nowchess")
+      .subject(botId.toString)
+      .expiresAt(Long.MaxValue)
+      .claim("type", "bot")
+      .sign()
+
+  @Transactional
+  def banUser(userId: UUID): Either[AccountError, UserAccount] =
+    userAccountRepository.findById(userId) match
+      case None => Left(AccountError.UserNotFound)
+      case Some(user) =>
+        user.banned = true
+        user.botAccounts.forEach(_.banned = true)
+        userAccountRepository.persist(user)
+        Right(user)
+
+  @Transactional
+  def unbanUser(userId: UUID): Either[AccountError, UserAccount] =
+    userAccountRepository.findById(userId) match
+      case None => Left(AccountError.UserNotFound)
+      case Some(user) =>
+        user.banned = false
+        user.botAccounts.forEach(_.banned = false)
+        userAccountRepository.persist(user)
+        Right(user)

modules/account/src/main/scala/de/nowchess/account/service/ChallengeService.scala

@@ -0,0 +1,197 @@
+package de.nowchess.account.service
+
+import de.nowchess.account.client.{
+  CoreCreateGameRequest,
+  CoreGameClient,
+  CoreGameResponse,
+  CorePlayerInfo,
+  CoreTimeControl,
+}
+import de.nowchess.account.domain.{Challenge, ChallengeColor, ChallengeStatus, DeclineReason}
+import de.nowchess.account.dto.{
+  ChallengeDto,
+  ChallengeListDto,
+  ChallengeRequest,
+  DeclineRequest,
+  PlayerInfo,
+  TimeControlDto,
+}
+import de.nowchess.account.error.ChallengeError
+import de.nowchess.account.repository.{ChallengeRepository, UserAccountRepository}
+import jakarta.enterprise.context.ApplicationScoped
+import jakarta.inject.Inject
+import jakarta.transaction.Transactional
+import org.eclipse.microprofile.rest.client.inject.RestClient
+import org.jboss.logging.Logger
+import scala.compiletime.uninitialized
+
+import java.time.Instant
+import java.time.temporal.ChronoUnit
+import java.util.UUID
+import java.util.concurrent.ThreadLocalRandom
+
+@ApplicationScoped
+class ChallengeService:
+
+  private val log = Logger.getLogger(classOf[ChallengeService])
+
+  // scalafix:off DisableSyntax.var
+  @Inject
+  var userAccountRepository: UserAccountRepository = uninitialized
+
+  @Inject
+  var challengeRepository: ChallengeRepository = uninitialized
+
+  @Inject
+  @RestClient
+  var coreGameClient: CoreGameClient = uninitialized
+
+  @Inject
+  var eventPublisher: EventPublisher = uninitialized
+  // scalafix:on
+
+  @Transactional
+  def create(challengerId: UUID, destUsername: String, req: ChallengeRequest): Either[ChallengeError, Challenge] =
+    for
+      destUser <- userAccountRepository.findByUsername(destUsername).toRight(ChallengeError.UserNotFound(destUsername))
+      challenger <- userAccountRepository.findById(challengerId).toRight(ChallengeError.ChallengerNotFound)
+      _          <- Either.cond(challenger.id != destUser.id, (), ChallengeError.CannotChallengeSelf)
+      _ <- Either.cond(
+        challengeRepository.findDuplicateChallenge(challengerId, destUser.id).isEmpty,
+        (),
+        ChallengeError.DuplicateChallenge,
+      )
+      color <- parseColor(req.color)
+    yield
+      val challenge = new Challenge()
+      challenge.challenger = challenger
+      challenge.destUser = destUser
+      challenge.color = color
+      challenge.status = ChallengeStatus.Created
+      challenge.timeControlType = req.timeControl.`type`
+      challenge.timeControlLimit = req.timeControl.limit.map(java.lang.Integer.valueOf).orNull
+      challenge.timeControlIncrement = req.timeControl.increment.map(java.lang.Integer.valueOf).orNull
+      challenge.createdAt = Instant.now()
+      challenge.expiresAt = Instant.now().plus(24, ChronoUnit.HOURS)
+      challengeRepository.persist(challenge)
+      try eventPublisher.publishChallengeCreated(destUser.id.toString, challenge.id.toString, challenger.username)
+      catch case ex: Exception => log.warnf(ex, "Failed to notify dest user for challenge %s", challenge.id)
+      challenge
+
+  @Transactional
+  def accept(challengeId: UUID, userId: UUID): Either[ChallengeError, Challenge] =
+    for
+      challenge <- challengeRepository.findById(challengeId).toRight(ChallengeError.ChallengeNotFound)
+      _         <- Either.cond(challenge.status == ChallengeStatus.Created, (), ChallengeError.ChallengeNotActive)
+      _         <- Either.cond(challenge.destUser.id == userId, (), ChallengeError.NotAuthorized)
+      gameId    <- createGame(challenge)
+    yield
+      challenge.status = ChallengeStatus.Accepted
+      challenge.gameId = gameId
+      challengeRepository.merge(challenge)
+      notifyBotIfNeeded(challenge, gameId)
+      try eventPublisher.publishChallengeAccepted(challenge.challenger.id.toString, challenge.id.toString, gameId)
+      catch case ex: Exception => log.warnf(ex, "Failed to notify challenger for game %s", gameId)
+      challenge
+
+  @Transactional
+  def decline(challengeId: UUID, userId: UUID, req: DeclineRequest): Either[ChallengeError, Challenge] =
+    for
+      challenge <- challengeRepository.findById(challengeId).toRight(ChallengeError.ChallengeNotFound)
+      _         <- Either.cond(challenge.status == ChallengeStatus.Created, (), ChallengeError.ChallengeNotActive)
+      _         <- Either.cond(challenge.destUser.id == userId, (), ChallengeError.NotAuthorized)
+      reason    <- parseDeclineReason(req.reason)
+    yield
+      challenge.status = ChallengeStatus.Declined
+      challenge.declineReason = reason.orNull
+      challengeRepository.merge(challenge)
+      challenge
+
+  @Transactional
+  def cancel(challengeId: UUID, userId: UUID): Either[ChallengeError, Challenge] =
+    for
+      challenge <- challengeRepository.findById(challengeId).toRight(ChallengeError.ChallengeNotFound)
+      _         <- Either.cond(challenge.status == ChallengeStatus.Created, (), ChallengeError.ChallengeNotActive)
+      _         <- Either.cond(challenge.challenger.id == userId, (), ChallengeError.NotAuthorized)
+    yield
+      challenge.status = ChallengeStatus.Canceled
+      challengeRepository.merge(challenge)
+      challenge
+
+  def findById(challengeId: UUID, userId: UUID): Either[ChallengeError, Challenge] =
+    for
+      challenge <- challengeRepository.findById(challengeId).toRight(ChallengeError.ChallengeNotFound)
+      _ <- Either.cond(
+        challenge.challenger.id == userId || challenge.destUser.id == userId,
+        (),
+        ChallengeError.NotAuthorized,
+      )
+    yield challenge
+
+  def listForUser(userId: UUID): ChallengeListDto =
+    val incoming = challengeRepository.findActiveByDestUserId(userId).map(toDto)
+    val outgoing = challengeRepository.findActiveByChallengerId(userId).map(toDto)
+    ChallengeListDto(in = incoming, out = outgoing)
+
+  private def notifyBotIfNeeded(challenge: Challenge, gameId: String): Unit =
+    val (white, black) = assignColors(challenge)
+    List(challenge.challenger, challenge.destUser).foreach { user =>
+      user.getBotAccounts.headOption.foreach { bot =>
+        val playingAs = if white.id == user.id.toString then "white" else "black"
+        try eventPublisher.publishGameStart(bot.id.toString, gameId, playingAs, 1400, bot.id.toString)
+        catch case ex: Exception => log.warnf(ex, "Failed to notify bot for game %s", gameId)
+      }
+    }
+
+  private def createGame(challenge: Challenge): Either[ChallengeError, String] =
+    try
+      val (white, black) = assignColors(challenge)
+      val tc             = buildTimeControl(challenge)
+      val req            = CoreCreateGameRequest(Some(white), Some(black), tc, Some("Authenticated"))
+      Right(coreGameClient.createGame(req).gameId)
+    catch case _ => Left(ChallengeError.GameCreationFailed)
+
+  private def assignColors(challenge: Challenge): (CorePlayerInfo, CorePlayerInfo) =
+    val challenger = CorePlayerInfo(challenge.challenger.id.toString, challenge.challenger.username)
+    val destUser   = CorePlayerInfo(challenge.destUser.id.toString, challenge.destUser.username)
+    challenge.color match
+      case ChallengeColor.White => (challenger, destUser)
+      case ChallengeColor.Black => (destUser, challenger)
+      case ChallengeColor.Random =>
+        if ThreadLocalRandom.current().nextBoolean() then (challenger, destUser) else (destUser, challenger)
+
+  private def buildTimeControl(challenge: Challenge): Option[CoreTimeControl] =
+    challenge.timeControlType match
+      case "unlimited"      => None
+      case "correspondence" => Some(CoreTimeControl(None, None, challenge.timeControlLimitOpt))
+      case _ => Some(CoreTimeControl(challenge.timeControlLimitOpt, challenge.timeControlIncrementOpt, None))
+
+  private def parseColor(raw: String): Either[ChallengeError, ChallengeColor] =
+    raw.toLowerCase match
+      case "white"  => Right(ChallengeColor.White)
+      case "black"  => Right(ChallengeColor.Black)
+      case "random" => Right(ChallengeColor.Random)
+      case _        => Left(ChallengeError.InvalidColor(raw))
+
+  private def parseDeclineReason(raw: Option[String]): Either[ChallengeError, Option[DeclineReason]] =
+    raw match
+      case None => Right(None)
+      case Some(r) =>
+        DeclineReason.values.find(_.toString.equalsIgnoreCase(r)) match
+          case Some(reason) => Right(Some(reason))
+          case None         => Left(ChallengeError.InvalidDeclineReason(r))
+
+  def toDto(c: Challenge): ChallengeDto =
+    ChallengeDto(
+      id = c.id.toString,
+      challenger = PlayerInfo(c.challenger.id.toString, c.challenger.username, c.challenger.rating),
+      destUser = PlayerInfo(c.destUser.id.toString, c.destUser.username, c.destUser.rating),
+      variant = "standard",
+      color = c.color.toString.toLowerCase,
+      timeControl = TimeControlDto(c.timeControlType, c.timeControlLimitOpt, c.timeControlIncrementOpt),
+      status = c.status.toString.toLowerCase,
+      declineReason = c.declineReasonOpt.map(_.toString.toLowerCase),
+      gameId = c.gameIdOpt,
+      createdAt = c.createdAt.toString,
+      expiresAt = c.expiresAt.toString,
+    )

modules/account/src/main/scala/de/nowchess/account/service/EventPublisher.scala

@@ -0,0 +1,31 @@
+package de.nowchess.account.service
+
+import de.nowchess.account.config.RedisConfig
+import io.quarkus.redis.datasource.RedisDataSource
+import jakarta.enterprise.context.ApplicationScoped
+import jakarta.inject.Inject
+import scala.compiletime.uninitialized
+
+@ApplicationScoped
+class EventPublisher:
+
+  // scalafix:off DisableSyntax.var
+  @Inject var redis: RedisDataSource   = uninitialized
+  @Inject var redisConfig: RedisConfig = uninitialized
+  // scalafix:on DisableSyntax.var
+
+  def publishGameStart(botId: String, gameId: String, playingAs: String, difficulty: Int, botAccountId: String): Unit =
+    val event =
+      s"""{"type":"gameStart","gameId":"$gameId","playingAs":"$playingAs","difficulty":$difficulty,"botAccountId":"$botAccountId"}"""
+    redis.pubsub(classOf[String]).publish(s"${redisConfig.prefix}:bot:$botId:events", event)
+    ()
+
+  def publishChallengeCreated(destUserId: String, challengeId: String, challengerName: String): Unit =
+    val event = s"""{"type":"challengeCreated","challengeId":"$challengeId","challengerName":"$challengerName"}"""
+    redis.pubsub(classOf[String]).publish(s"${redisConfig.prefix}:user:$destUserId:events", event)
+    ()
+
+  def publishChallengeAccepted(challengerId: String, challengeId: String, gameId: String): Unit =
+    val event = s"""{"type":"challengeAccepted","challengeId":"$challengeId","gameId":"$gameId"}"""
+    redis.pubsub(classOf[String]).publish(s"${redisConfig.prefix}:user:$challengerId:events", event)
+    ()

modules/account/src/test/resources/application.yml

@@ -0,0 +1,36 @@
+quarkus:
+  http:
+    port: 8083
+  application:
+    name: nowchess-account
+  smallrye-openapi:
+    info-title: NowChess Account Service
+    path: /openapi
+  swagger-ui:
+    always-include: true
+    path: /swagger-ui
+  datasource:
+    db-kind: h2
+    username: sa
+    password: ""
+    jdbc:
+      url: "jdbc:h2:mem:test;DB_CLOSE_DELAY=-1"
+  hibernate-orm:
+    schema-management:
+      strategy: drop-and-create
+mp:
+  jwt:
+    verify:
+      publickey:
+        location: keys/test-public.pem
+      issuer: nowchess
+smallrye:
+  jwt:
+    sign:
+      key:
+        location: keys/test-private.pem
+nowchess:
+  internal:
+    secret: test-secret
+    auth:
+      enabled: false

modules/account/src/test/resources/keys/test-private.pem

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----

modules/account/src/test/resources/keys/test-public.pem

@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuMwR4ESzHs9m+sH3b70y
+VUfMcW6/5CVDIquKLdeCobU2hopBVvu+3s46KmmxVh+wjYw7wElgjNp+1z8S+H4V
+MM7024UWdlzTPNJSgfjiIz94aDS74HkjR20uAs7Tn5NiVbUBS0HWCf4LwaBT4AbW
+WDv0mVTC9vHeVPdia1kSAtXtR7daCsCiaDqrUya7P0bjpSkP3buJMGPJtIz8NOcB
+QNWETFAu/MSpJQlWArn2HsCFE3SsQEytGSlgaDwiZ8Q4PIMIKZ1dcB0KxxnG2b4X
+FYNxlqQ3GHZ6IFeK5bLMLOe/rgIRkckAZJpoVW/s0/i0+1lwzweOjJx5ChSGWsRJ
+BwIDAQAB
+-----END PUBLIC KEY-----

modules/account/src/test/scala/de/nowchess/account/resource/AccountResourceTest.scala

@@ -0,0 +1,107 @@
+package de.nowchess.account.resource
+
+import io.quarkus.test.junit.QuarkusTest
+import io.restassured.RestAssured
+import io.restassured.http.ContentType
+import org.hamcrest.Matchers.*
+import org.junit.jupiter.api.Test
+
+@QuarkusTest
+class AccountResourceTest:
+
+  private def givenRequest() = RestAssured.`given`().contentType(ContentType.JSON)
+
+  private def registerBody(username: String, email: String = "", password: String = "secret") =
+    val resolvedEmail = if email.isEmpty then s"$username@example.com" else email
+    s"""{"username":"$username","email":"$resolvedEmail","password":"$password"}"""
+
+  private def loginBody(username: String, password: String = "secret") =
+    s"""{"username":"$username","password":"$password"}"""
+
+  private def registerAndLogin(username: String): String =
+    givenRequest()
+      .body(registerBody(username))
+      .when()
+      .post("/api/account")
+      .`then`()
+      .statusCode(200)
+    givenRequest()
+      .body(loginBody(username))
+      .when()
+      .post("/api/account/login")
+      .`then`()
+      .statusCode(200)
+      .extract()
+      .path[String]("token")
+
+  @Test
+  def registerReturns200(): Unit =
+    givenRequest()
+      .body(registerBody("alice"))
+      .when()
+      .post("/api/account")
+      .`then`()
+      .statusCode(200)
+      .body("username", is("alice"))
+      .body("rating", is(1500))
+
+  @Test
+  def registerConflictOnDuplicateUsername(): Unit =
+    givenRequest().body(registerBody("bob")).when().post("/api/account")
+    givenRequest()
+      .body(registerBody("bob"))
+      .when()
+      .post("/api/account")
+      .`then`()
+      .statusCode(409)
+      .body("error", containsString("bob"))
+
+  @Test
+  def loginReturns200WithToken(): Unit =
+    givenRequest().body(registerBody("charlie")).when().post("/api/account")
+    givenRequest()
+      .body(loginBody("charlie"))
+      .when()
+      .post("/api/account/login")
+      .`then`()
+      .statusCode(200)
+      .body("token", notNullValue())
+
+  @Test
+  def loginUnauthorizedOnWrongPassword(): Unit =
+    givenRequest().body(registerBody("dave")).when().post("/api/account")
+    givenRequest()
+      .body(loginBody("dave", "wrongpassword"))
+      .when()
+      .post("/api/account/login")
+      .`then`()
+      .statusCode(401)
+
+  @Test
+  def getMeReturns200(): Unit =
+    val token = registerAndLogin("eve")
+    givenRequest()
+      .header("Authorization", s"Bearer $token")
+      .when()
+      .get("/api/account/me")
+      .`then`()
+      .statusCode(200)
+      .body("username", is("eve"))
+
+  @Test
+  def getPublicProfileReturns200(): Unit =
+    givenRequest().body(registerBody("frank")).when().post("/api/account")
+    givenRequest()
+      .when()
+      .get("/api/account/frank")
+      .`then`()
+      .statusCode(200)
+      .body("username", is("frank"))
+
+  @Test
+  def getPublicProfileNotFound(): Unit =
+    givenRequest()
+      .when()
+      .get("/api/account/doesnotexist")
+      .`then`()
+      .statusCode(404)

modules/account/src/test/scala/de/nowchess/account/resource/ChallengeResourceTest.scala

@@ -0,0 +1,179 @@
+package de.nowchess.account.resource
+
+import de.nowchess.account.client.{CoreGameClient, CoreGameResponse}
+import io.quarkus.test.InjectMock
+import io.quarkus.test.junit.QuarkusTest
+import io.restassured.RestAssured
+import io.restassured.http.ContentType
+import org.eclipse.microprofile.rest.client.inject.RestClient
+import org.hamcrest.Matchers.*
+import org.junit.jupiter.api.{BeforeEach, Test}
+import org.mockito.{ArgumentMatchers, Mockito}
+
+@QuarkusTest
+class ChallengeResourceTest:
+
+  @InjectMock
+  @RestClient
+  // scalafix:off DisableSyntax.var
+  var coreGameClient: CoreGameClient = scala.compiletime.uninitialized
+  // scalafix:on
+
+  @BeforeEach
+  def setup(): Unit =
+    Mockito.when(coreGameClient.createGame(ArgumentMatchers.any())).thenReturn(CoreGameResponse("test-game-id"))
+
+  private def givenRequest() = RestAssured.`given`().contentType(ContentType.JSON)
+
+  private def registerBody(username: String, suffix: String = "") =
+    val email = s"$username$suffix@test.com"
+    s"""{"username":"$username$suffix","email":"$email","password":"secret"}"""
+
+  private def loginBody(username: String, suffix: String = "") =
+    s"""{"username":"$username$suffix","password":"secret"}"""
+
+  private def registerAndLogin(username: String, suffix: String = ""): String =
+    givenRequest().body(registerBody(username, suffix)).when().post("/api/account")
+    givenRequest()
+      .body(loginBody(username, suffix))
+      .when()
+      .post("/api/account/login")
+      .`then`()
+      .statusCode(200)
+      .extract()
+      .path[String]("token")
+
+  private val clockBody =
+    """{"color":"random","timeControl":{"type":"clock","limit":300,"increment":5}}"""
+
+  private def authed(token: String) =
+    givenRequest().header("Authorization", s"Bearer $token")
+
+  @Test
+  def createChallengeReturns201(): Unit =
+    val t1 = registerAndLogin("user1c")
+    registerAndLogin("user2c")
+    authed(t1)
+      .contentType(ContentType.JSON)
+      .body(clockBody)
+      .when()
+      .post("/api/challenge/user2c")
+      .`then`()
+      .statusCode(201)
+      .body("status", is("created"))
+      .body("color", is("random"))
+
+  @Test
+  def createChallengeConflictOnDuplicate(): Unit =
+    val t1 = registerAndLogin("user1dup")
+    registerAndLogin("user2dup")
+    authed(t1).contentType(ContentType.JSON).body(clockBody).when().post("/api/challenge/user2dup")
+    authed(t1)
+      .contentType(ContentType.JSON)
+      .body(clockBody)
+      .when()
+      .post("/api/challenge/user2dup")
+      .`then`()
+      .statusCode(409)
+
+  @Test
+  def createChallengeSelfForbidden(): Unit =
+    val token = registerAndLogin("selfuser")
+    authed(token)
+      .contentType(ContentType.JSON)
+      .body(clockBody)
+      .when()
+      .post("/api/challenge/selfuser")
+      .`then`()
+      .statusCode(400)
+
+  @Test
+  def acceptChallengeReturns200(): Unit =
+    val t1 = registerAndLogin("accUser1")
+    val t2 = registerAndLogin("accUser2")
+    val challengeId = authed(t1)
+      .contentType(ContentType.JSON)
+      .body(clockBody)
+      .when()
+      .post("/api/challenge/accUser2")
+      .`then`()
+      .statusCode(201)
+      .extract()
+      .path[String]("id")
+    authed(t2)
+      .when()
+      .post(s"/api/challenge/$challengeId/accept")
+      .`then`()
+      .statusCode(200)
+      .body("status", is("accepted"))
+      .body("gameId", is("test-game-id"))
+
+  @Test
+  def declineChallengeReturns200(): Unit =
+    val t1 = registerAndLogin("decUser1")
+    val t2 = registerAndLogin("decUser2")
+    val challengeId = authed(t1)
+      .contentType(ContentType.JSON)
+      .body(clockBody)
+      .when()
+      .post("/api/challenge/decUser2")
+      .`then`()
+      .statusCode(201)
+      .extract()
+      .path[String]("id")
+    authed(t2)
+      .contentType(ContentType.JSON)
+      .body("""{"reason":"later"}""")
+      .when()
+      .post(s"/api/challenge/$challengeId/decline")
+      .`then`()
+      .statusCode(200)
+      .body("status", is("declined"))
+      .body("declineReason", is("later"))
+
+  @Test
+  def cancelChallengeReturns200(): Unit =
+    val t1 = registerAndLogin("canUser1")
+    registerAndLogin("canUser2")
+    val challengeId = authed(t1)
+      .contentType(ContentType.JSON)
+      .body(clockBody)
+      .when()
+      .post("/api/challenge/canUser2")
+      .`then`()
+      .statusCode(201)
+      .extract()
+      .path[String]("id")
+    authed(t1)
+      .when()
+      .post(s"/api/challenge/$challengeId/cancel")
+      .`then`()
+      .statusCode(200)
+      .body("status", is("canceled"))
+
+  @Test
+  def listChallengesReturnsInAndOut(): Unit =
+    val t1 = registerAndLogin("listUser1")
+    registerAndLogin("listUser2")
+    registerAndLogin("listUser3")
+    authed(t1)
+      .contentType(ContentType.JSON)
+      .body(clockBody)
+      .when()
+      .post("/api/challenge/listUser2")
+      .`then`()
+      .statusCode(201)
+    authed(t1)
+      .contentType(ContentType.JSON)
+      .body(clockBody)
+      .when()
+      .post("/api/challenge/listUser3")
+      .`then`()
+      .statusCode(201)
+    authed(t1)
+      .when()
+      .get("/api/challenge")
+      .`then`()
+      .statusCode(200)
+      .body("out.size()", is(2))
+      .body("in.size()", is(0))

modules/api/CHANGELOG.md

@@ -60,3 +60,52 @@
 * NCS-21 Write Scripts to automate certain tasks ([#15](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/15)) ([8051871](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/80518719d536a087d339fe02530825dc07f8b388))
 * NCS-25 Add linters to keep quality up ([#27](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/27)) ([fd4e67d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fd4e67d4f782a7e955822d90cb909d0a81676fb2))
 * NCS-41 Bot Platform ([#33](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/33)) ([dceab08](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/dceab0875e6d15f7d3958633cf5dd5b29a851b1d))
+##  (2026-04-21)
+
+### Features
+
+* NCS-13 Implement Threefold Repetition ([#31](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/31)) ([767d305](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/767d3051a76c266050b6335774d66e2db2273c16))
+* NCS-14 implemented insufficient moves rule ([#30](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/30)) ([b0399a4](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/b0399a4e489950083066c9538df9a84dcc7a4613))
+* NCS-21 Write Scripts to automate certain tasks ([#15](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/15)) ([8051871](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/80518719d536a087d339fe02530825dc07f8b388))
+* NCS-25 Add linters to keep quality up ([#27](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/27)) ([fd4e67d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fd4e67d4f782a7e955822d90cb909d0a81676fb2))
+* NCS-37 Quarkus integration ([#35](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/35)) ([5ad5efb](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/5ad5efb41e9df9e3dccb48f96a69f06217ab98e1))
+* NCS-41 Bot Platform ([#33](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/33)) ([dceab08](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/dceab0875e6d15f7d3958633cf5dd5b29a851b1d))
+##  (2026-04-21)
+
+### Features
+
+* NCS-13 Implement Threefold Repetition ([#31](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/31)) ([767d305](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/767d3051a76c266050b6335774d66e2db2273c16))
+* NCS-14 implemented insufficient moves rule ([#30](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/30)) ([b0399a4](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/b0399a4e489950083066c9538df9a84dcc7a4613))
+* NCS-21 Write Scripts to automate certain tasks ([#15](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/15)) ([8051871](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/80518719d536a087d339fe02530825dc07f8b388))
+* NCS-25 Add linters to keep quality up ([#27](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/27)) ([fd4e67d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fd4e67d4f782a7e955822d90cb909d0a81676fb2))
+* NCS-37 Quarkus integration ([#35](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/35)) ([5ad5efb](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/5ad5efb41e9df9e3dccb48f96a69f06217ab98e1))
+* NCS-41 Bot Platform ([#33](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/33)) ([dceab08](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/dceab0875e6d15f7d3958633cf5dd5b29a851b1d))
+##  (2026-04-22)
+
+### Features
+
+* NCS-13 Implement Threefold Repetition ([#31](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/31)) ([767d305](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/767d3051a76c266050b6335774d66e2db2273c16))
+* NCS-14 implemented insufficient moves rule ([#30](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/30)) ([b0399a4](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/b0399a4e489950083066c9538df9a84dcc7a4613))
+* NCS-21 Write Scripts to automate certain tasks ([#15](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/15)) ([8051871](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/80518719d536a087d339fe02530825dc07f8b388))
+* NCS-25 Add linters to keep quality up ([#27](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/27)) ([fd4e67d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fd4e67d4f782a7e955822d90cb909d0a81676fb2))
+* NCS-37 Quarkus integration ([#35](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/35)) ([5ad5efb](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/5ad5efb41e9df9e3dccb48f96a69f06217ab98e1))
+* NCS-41 Bot Platform ([#33](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/33)) ([dceab08](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/dceab0875e6d15f7d3958633cf5dd5b29a851b1d))
+
+### Bug Fixes
+
+* IO microservice ([#38](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/38)) ([fb5c61d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fb5c61de63292e5d70c06304cba2193686aa1607))
+##  (2026-04-22)
+
+### Features
+
+* NCS-13 Implement Threefold Repetition ([#31](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/31)) ([767d305](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/767d3051a76c266050b6335774d66e2db2273c16))
+* NCS-14 implemented insufficient moves rule ([#30](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/30)) ([b0399a4](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/b0399a4e489950083066c9538df9a84dcc7a4613))
+* NCS-21 Write Scripts to automate certain tasks ([#15](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/15)) ([8051871](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/80518719d536a087d339fe02530825dc07f8b388))
+* NCS-25 Add linters to keep quality up ([#27](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/27)) ([fd4e67d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fd4e67d4f782a7e955822d90cb909d0a81676fb2))
+* NCS-37 Quarkus integration ([#35](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/35)) ([f088c4e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/f088c4e9ffcc498d3d1b6f01e8f50042d5830d55))
+* NCS-41 Bot Platform ([#33](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/33)) ([8744bee](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/8744bee2dd20966dae90a09c21a43d5b06f59e00))
+* **rule:** Rules as a microservice ([#39](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/39)) ([093134d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/093134d36c6844ba02a36a28d5d044f09291cd1d))
+
+### Bug Fixes
+
+* IO microservice ([#38](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/38)) ([a386f57](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a386f57c21d34ead6cc6f92836c52b714597e289))

modules/api/src/main/scala/de/nowchess/api/bot/Bot.scala

@@ -1,11 +0,0 @@
-package de.nowchess.api.bot
-
-import de.nowchess.api.game.GameContext
-import de.nowchess.api.move.Move
-
-trait Bot {
-
-  def name: String
-  def nextMove(context: GameContext): Option[Move]
-
-}

modules/api/src/main/scala/de/nowchess/api/dto/ClockDto.scala

@@ -0,0 +1,9 @@
+package de.nowchess.api.dto
+
+/** Snapshot of remaining clock time for both players in milliseconds. -1 indicates the value is not applicable (e.g.
+  * inactive player in correspondence chess).
+  */
+final case class ClockDto(
+    whiteRemainingMs: Long,
+    blackRemainingMs: Long,
+)

modules/api/src/main/scala/de/nowchess/api/dto/CreateGameRequestDto.scala

@@ -1,6 +1,10 @@
 package de.nowchess.api.dto
 
+import de.nowchess.api.game.GameMode
+
 final case class CreateGameRequestDto(
     white: Option[PlayerInfoDto],
     black: Option[PlayerInfoDto],
+    timeControl: Option[TimeControlDto],
+    mode: Option[GameMode] = None,
 )

modules/api/src/main/scala/de/nowchess/api/dto/GameStateDto.scala

@@ -9,4 +9,6 @@ final case class GameStateDto(
     moves: List[String],
     undoAvailable: Boolean,
     redoAvailable: Boolean,
+    clock: Option[ClockDto],
+    takebackRequestedBy: Option[String] = None,
 )

modules/api/src/main/scala/de/nowchess/api/dto/GameWritebackEventDto.scala

@@ -0,0 +1,28 @@
+package de.nowchess.api.dto
+
+case class GameWritebackEventDto(
+    gameId: String,
+    fen: String,
+    pgn: String,
+    moveCount: Int,
+    whiteId: String,
+    whiteName: String,
+    blackId: String,
+    blackName: String,
+    mode: String,
+    resigned: Boolean,
+    limitSeconds: Option[Int],
+    incrementSeconds: Option[Int],
+    daysPerMove: Option[Int],
+    whiteRemainingMs: Option[Long],
+    blackRemainingMs: Option[Long],
+    incrementMs: Option[Long],
+    clockLastTickAt: Option[Long],
+    clockMoveDeadline: Option[Long],
+    clockActiveColor: Option[String],
+    pendingDrawOffer: Option[String],
+    result: Option[String] = None,
+    terminationReason: Option[String] = None,
+    redoStack: List[String] = Nil,
+    pendingTakebackRequest: Option[String] = None,
+)

modules/api/src/main/scala/de/nowchess/api/dto/ImportFenRequest.scala

@@ -0,0 +1,3 @@
+package de.nowchess.api.dto
+
+case class ImportFenRequest(fen: String)

modules/api/src/main/scala/de/nowchess/api/dto/ImportFenRequestDto.scala

@@ -4,4 +4,5 @@ final case class ImportFenRequestDto(
     fen: String,
     white: Option[PlayerInfoDto],
     black: Option[PlayerInfoDto],
+    timeControl: Option[TimeControlDto],
 )

modules/api/src/main/scala/de/nowchess/api/dto/ImportPgnRequest.scala

@@ -0,0 +1,3 @@
+package de.nowchess.api.dto
+
+case class ImportPgnRequest(pgn: String)

modules/api/src/main/scala/de/nowchess/api/dto/PlayerInfoDto.scala

@@ -1,3 +1,5 @@
 package de.nowchess.api.dto
 
-final case class PlayerInfoDto(id: String, displayName: String)
+import de.nowchess.api.player.PlayerType
+
+final case class PlayerInfoDto(id: String, displayName: String, playerType: PlayerType)

modules/api/src/main/scala/de/nowchess/api/dto/TimeControlDto.scala

@@ -0,0 +1,7 @@
+package de.nowchess.api.dto
+
+final case class TimeControlDto(
+    limitSeconds: Option[Int],
+    incrementSeconds: Option[Int],
+    daysPerMove: Option[Int],
+)

modules/api/src/main/scala/de/nowchess/api/error/GameError.scala

@@ -0,0 +1,13 @@
+package de.nowchess.api.error
+
+enum GameError:
+  case ParseError(details: String)
+  case FileReadError(details: String)
+  case FileWriteError(details: String)
+  case IllegalMove
+
+  def message: String = this match
+    case ParseError(d)     => d
+    case FileReadError(d)  => d
+    case FileWriteError(d) => d
+    case IllegalMove       => "Illegal move"