fix(conformance): mill ZoneTransfer annotations emit affectorId

.gitignore

@@ -68,6 +68,7 @@ app/main/proto/messages.proto
 
 !.claude/
 .claude/CLAUDE.md
+.claude/worktrees/
 
 # Contains creds
 deploy/services-proxy.conf

matchdoor/src/main/kotlin/leyline/game/AnnotationBuilder.kt

@@ -124,6 +124,7 @@ object AnnotationBuilder {
     fun affectorSourceFromEvents(forgeCardId: Int, events: List<GameEvent>): Int? {
         for (ev in events) {
             when {
+                ev is GameEvent.CardMilled && ev.forgeCardId == forgeCardId -> return ev.sourceForgeCardId
                 ev is GameEvent.CardSurveiled && ev.forgeCardId == forgeCardId -> return ev.sourceForgeCardId
                 ev is GameEvent.CardDestroyed && ev.forgeCardId == forgeCardId -> return ev.sourceForgeCardId
             }

matchdoor/src/main/kotlin/leyline/game/GameEvent.kt

@@ -186,6 +186,7 @@ sealed interface GameEvent {
     data class CardMilled(
         val forgeCardId: Int,
         val seatId: Int,
+        val sourceForgeCardId: Int? = null,
     ) : GameEvent
 
     /** A card was moved Library→Hand via a search effect (tutor, ChangeZone).

matchdoor/src/main/kotlin/leyline/game/GameEventCollector.kt

@@ -117,8 +117,10 @@ class GameEventCollector(private val bridge: GameBridge) : IGameEventVisitor.Bas
                 }
                 from == ZoneType.Hand && to == ZoneType.Graveyard ->
                     GameEvent.CardDiscarded(card.id, seat)
-                from == ZoneType.Library && to == ZoneType.Graveyard ->
-                    GameEvent.CardMilled(card.id, seat)
+                from == ZoneType.Library && to == ZoneType.Graveyard -> {
+                    val sourceId = bridge.getGame()?.stack?.peek()?.spellAbility?.hostCard?.id
+                    GameEvent.CardMilled(card.id, seat, sourceId)
+                }
                 from == ZoneType.Library && to == ZoneType.Hand && isSearchedToHand(card.id) ->
                     GameEvent.CardSearchedToHand(card.id)
                 else -> GameEvent.ZoneChanged(card.id, Zone.fromForge(from), Zone.fromForge(to))

matchdoor/src/test/kotlin/leyline/game/CategoryFromEventsTest.kt

@@ -449,9 +449,16 @@ class CategoryFromEventsTest :
             AnnotationBuilder.affectorSourceFromEvents(55, events) shouldBe 42
         }
 
-        test("affectorSourceReturnsNullForNonSurveil") {
+        test("affectorSourceReturnsMillSourceCard") {
             val events = listOf(
-                GameEvent.CardMilled(forgeCardId = 55, seatId = 1),
+                GameEvent.CardMilled(forgeCardId = 55, seatId = 1, sourceForgeCardId = 42),
+            )
+            AnnotationBuilder.affectorSourceFromEvents(55, events) shouldBe 42
+        }
+
+        test("affectorSourceReturnsNullWhenMillHasNoSource") {
+            val events = listOf(
+                GameEvent.CardMilled(forgeCardId = 55, seatId = 1, sourceForgeCardId = null),
             )
             AnnotationBuilder.affectorSourceFromEvents(55, events).shouldBeNull()
         }