refactor: split team/player/message into impl/ and exception/ subpackages

Each domain now has:
- Top-level package: contracts (interfaces, entities, enums, values, events).
- exception/ subpackage: exception hierarchy.
- impl/ subpackage: implementations CR-Core ships by default, swappable by
  a game plugin if needed.

Moved (FQN changes for consumers):
- fr.luc.crcore.team.TeamException (+ AlreadyExists, NotFound, Access)
    → fr.luc.crcore.team.exception.*
- fr.luc.crcore.team.TeamServiceImpl, BukkitEventFiringTeamServiceImpl,
  InMemoryTeamRepository, SqliteTeamRepository
    → fr.luc.crcore.team.impl.*
- fr.luc.crcore.player.PlayerException, PlayerProfileNotFoundException
    → fr.luc.crcore.player.exception.*
- fr.luc.crcore.player.PlayerProfileServiceImpl,
  BukkitEventFiringPlayerProfileServiceImpl,
  InMemoryPlayerProfileRepository, SqlitePlayerProfileRepository
    → fr.luc.crcore.player.impl.*
- fr.luc.crcore.message.YamlMessagesService
    → fr.luc.crcore.message.impl.YamlMessagesService

Unchanged top-level packages: database/, command/, common/ (already small
and well-organized). Events stay where they were (already in event/
subpackages).

setup.md tree updated to reflect the new layout. decisions.md logs the
rationale (consumer-facing FQNs, separation between contract and impl).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docs/setup.md

@@ -211,50 +211,58 @@ CitesPlugin/                                 # dossier IntelliJ (renommer plus t
     │           ├── TeamScoreSubCommand.java        # /core team score (admin)
     │           ├── TeamTopSubCommand.java          # /core team top
     │           └── TeamSetSpawnSubCommand.java     # /core team setspawn
-    ├── team/
-    │   ├── Team.java
-    │   ├── TeamMember.java
-    │   ├── TeamRole.java
-    │   ├── TeamColor.java
-    │   ├── TeamVisibility.java
-    │   ├── TeamRanking.java                 # record
-    │   ├── TeamRepository.java
-    │   ├── InMemoryTeamRepository.java
-    │   ├── SqliteTeamRepository.java
-    │   ├── TeamService.java
-    │   ├── TeamServiceImpl.java
-    │   ├── BukkitEventFiringTeamServiceImpl.java   # impl par défaut
-    │   ├── TeamException.java
-    │   ├── TeamAlreadyExistsException.java
-    │   ├── TeamNotFoundException.java
-    │   ├── TeamAccessException.java
-    │   └── event/                                  # Bukkit events team
-    │       ├── TeamEvent.java                      # base
-    │       ├── TeamCreateEvent.java
-    │       ├── TeamDissolveEvent.java
-    │       ├── TeamMemberAddEvent.java
-    │       ├── TeamMemberRemoveEvent.java
-    │       ├── PlayerJoinTeamEvent.java
-    │       ├── TeamLeadershipTransferEvent.java
-    │       ├── TeamVisibilityChangeEvent.java
-    │       ├── TeamScoreChangeEvent.java
-    │       └── TeamSpawnPointChangeEvent.java
-    └── player/
-        ├── PlayerProfile.java
-        ├── PlayerRanking.java
-        ├── PlayerProfileRepository.java
-        ├── InMemoryPlayerProfileRepository.java
-        ├── SqlitePlayerProfileRepository.java
-        ├── PlayerProfileService.java
-        ├── PlayerProfileServiceImpl.java
-        ├── BukkitEventFiringPlayerProfileServiceImpl.java
-        ├── PlayerException.java
-        ├── PlayerProfileNotFoundException.java
-        └── event/                                  # Bukkit events player
-            ├── PlayerProfileEvent.java
-            ├── PlayerProfileCreateEvent.java
-            ├── PlayerProfileDeleteEvent.java
-            └── PlayerScoreChangeEvent.java
+    ├── message/                                # service de messages YAML
+    │   ├── MessagesService.java             # interface (contrat public)
+    │   └── impl/
+    │       └── YamlMessagesService.java     # impl par défaut
+    ├── team/                                # contrats + entités au top
+    │   ├── Team.java                        # entité
+    │   ├── TeamMember.java                  # entité
+    │   ├── TeamRole.java                    # enum
+    │   ├── TeamColor.java                   # enum
+    │   ├── TeamVisibility.java              # enum
+    │   ├── TeamRanking.java                 # value
+    │   ├── TeamService.java                 # interface
+    │   ├── TeamRepository.java              # interface
+    │   ├── event/                           # Bukkit events team
+    │   │   ├── TeamEvent.java               # base
+    │   │   ├── TeamCreateEvent.java
+    │   │   ├── TeamDissolveEvent.java
+    │   │   ├── TeamMemberAddEvent.java
+    │   │   ├── TeamMemberRemoveEvent.java
+    │   │   ├── PlayerJoinTeamEvent.java
+    │   │   ├── TeamLeadershipTransferEvent.java
+    │   │   ├── TeamVisibilityChangeEvent.java
+    │   │   ├── TeamScoreChangeEvent.java
+    │   │   └── TeamSpawnPointChangeEvent.java
+    │   ├── exception/                       # hiérarchie d'exceptions team
+    │   │   ├── TeamException.java           # base
+    │   │   ├── TeamAlreadyExistsException.java
+    │   │   ├── TeamNotFoundException.java
+    │   │   └── TeamAccessException.java
+    │   └── impl/                            # implémentations swappables
+    │       ├── TeamServiceImpl.java         # service de base
+    │       ├── BukkitEventFiringTeamServiceImpl.java  # impl par défaut
+    │       ├── InMemoryTeamRepository.java  # repo en mémoire
+    │       └── SqliteTeamRepository.java    # repo SQLite write-through
+    └── player/                              # contrats + entités au top
+        ├── PlayerProfile.java               # entité
+        ├── PlayerRanking.java               # value
+        ├── PlayerProfileService.java        # interface
+        ├── PlayerProfileRepository.java     # interface
+        ├── event/                           # Bukkit events player
+        │   ├── PlayerProfileEvent.java
+        │   ├── PlayerProfileCreateEvent.java
+        │   ├── PlayerProfileDeleteEvent.java
+        │   └── PlayerScoreChangeEvent.java
+        ├── exception/
+        │   ├── PlayerException.java
+        │   └── PlayerProfileNotFoundException.java
+        └── impl/
+            ├── PlayerProfileServiceImpl.java
+            ├── BukkitEventFiringPlayerProfileServiceImpl.java
+            ├── InMemoryPlayerProfileRepository.java
+            └── SqlitePlayerProfileRepository.java
 ```
 
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