fix(android): brancher les classements sur les vrais IDs Play Jeux

La console Play génère les IDs de leaderboard (format CgkI…), contrairement
à l'hypothèse de la spec : l'app demandait des boards questions_N inexistants,
d'où un chargement infini et des scores silencieusement perdus. Remplacer le
mapping par la table des vrais IDs (GameConfig.leaderboardId() devient
nullable, null = pas de board) et logguer les échecs GMS jusqu'ici avalés
par runCatching. Spec corrigée en conséquence (§6, §7).

sharedUI/src/commonMain/kotlin/com/livrets/App.kt

@@ -74,7 +74,7 @@ fun App(
                 scope.launch {
                     if (gamesServices.isSignedIn() || gamesServices.signIn()) {
                         if (playerName == null) playerName = gamesServices.playerDisplayName()
-                        gamesServices.showLeaderboard(config.leaderboardId())
+                        config.leaderboardId()?.let { gamesServices.showLeaderboard(it) }
                     }
                 }
             },
@@ -91,7 +91,9 @@ fun App(
                     withContext(NonCancellable) {
                         val score = result.leaderboardScore()
                         if (score > 0 && (gamesServices.isSignedIn() || gamesServices.signIn())) {
-                            gamesServices.submitScore(result.config.leaderboardId(), score)
+                            result.config.leaderboardId()?.let {
+                                gamesServices.submitScore(it, score)
+                            }
                         }
                     }
                 }

sharedUI/src/commonMain/kotlin/com/livrets/games/Leaderboards.kt

@@ -2,4 +2,17 @@ package com.livrets.games
 
 import com.livrets.game.GameConfig
 
-fun GameConfig.leaderboardId(): String = "questions_$questionCount"
+private val leaderboardIds = mapOf(
+    5 to "CgkIuqy3oN8HEAIQAg",
+    10 to "CgkIuqy3oN8HEAIQAw",
+    15 to "CgkIuqy3oN8HEAIQBA",
+    20 to "CgkIuqy3oN8HEAIQBQ",
+    25 to "CgkIuqy3oN8HEAIQBg",
+    30 to "CgkIuqy3oN8HEAIQBw",
+    35 to "CgkIuqy3oN8HEAIQCA",
+    40 to "CgkIuqy3oN8HEAIQCQ",
+    45 to "CgkIuqy3oN8HEAIQCg",
+    50 to "CgkIuqy3oN8HEAIQCw",
+)
+
+fun GameConfig.leaderboardId(): String? = leaderboardIds[questionCount]

sharedUI/src/commonTest/kotlin/com/livrets/games/LeaderboardScoreTest.kt

@@ -7,6 +7,7 @@ import com.livrets.game.Question
 import com.livrets.game.product
 import kotlin.test.Test
 import kotlin.test.assertEquals
+import kotlin.test.assertNull
 import kotlin.time.Instant
 
 class LeaderboardScoreTest {
@@ -84,7 +85,26 @@ class LeaderboardScoreTest {
 
     @Test
     fun `id de board par nombre de questions`() {
-        assertEquals("questions_10", GameConfig(10, 5, 12).leaderboardId())
-        assertEquals("questions_5", GameConfig(5, 3, 1).leaderboardId())
+        val attendu = mapOf(
+            5 to "CgkIuqy3oN8HEAIQAg",
+            10 to "CgkIuqy3oN8HEAIQAw",
+            15 to "CgkIuqy3oN8HEAIQBA",
+            20 to "CgkIuqy3oN8HEAIQBQ",
+            25 to "CgkIuqy3oN8HEAIQBg",
+            30 to "CgkIuqy3oN8HEAIQBw",
+            35 to "CgkIuqy3oN8HEAIQCA",
+            40 to "CgkIuqy3oN8HEAIQCQ",
+            45 to "CgkIuqy3oN8HEAIQCg",
+            50 to "CgkIuqy3oN8HEAIQCw",
+        )
+        attendu.forEach { (questions, id) ->
+            assertEquals(id, GameConfig(questions, 5, 12).leaderboardId())
+        }
+    }
+
+    @Test
+    fun `pas d'id de board hors liste des nombres de questions`() {
+        assertNull(GameConfig(7, 5, 12).leaderboardId())
+        assertNull(GameConfig(60, 5, 12).leaderboardId())
     }
 }