refactor(迭代27 T4): 波四 ModalFlow 抽取+互斥域 tags 化+双 context——对拍全同

P1-5/P2-7 组合根可测化+模态协议内聚（场景拆分后重估结论=抽取面收敛为模态编排域）:
- modal_flow.gd 新纯逻辑类: 依赖仅 ModalStack+查询 Callable（审计处方）——开合编排
  （挂起兜底/排播排空/遮挡记账/开合同步）/棋盘输入锁谓词（三例外注入）/双形制角标谓词；
  V6 modal_flow_test 19 断言直接 new() 进 run_all（26→27 套）——测试抓出并修正
  挂起兜底 divergent return 一处（原 main 语义=先结挂起后继续开本层不短路）
- ModalStack 互斥域随层登记: register(m, tags) + TAG_NON_LOCKING/TAG_SCREEN_STATE
  封闭词表 + has_open_excluding_tags 组查询；原 has_open_excluding/_any 调用点拼装退役
  （main 五处判据迁移）；main._modals=flow.stack（ui_struct _list 登记序断言缝保留）
- P1-5 控制器构造收拢 context: curio 16 参→CurioFlowContext/camp 13 参→CampFlowContext
  （字段逐一同名迁移，控制器可独立实例化）

验收: 对拍三变体全同；冒烟 1079/0+run_all 27 套+probe click+render golden 全绿

game/presentation/curio_interact_controller.gd

@@ -31,27 +31,24 @@ var _pending_curio := {}                # 三选一停点载荷暂存（迭代 1
 var _curio_context := "level_clear"     # 三选一面上下文（level_clear=通关停点→推进下一关 / reward_node=奖励节点→回图选路）
 
 
-func _init(db_ref, meta_get: Callable, curio_overlay_ref: CurioPickOverlay, end_overlay_ref: BattleEndOverlay,
-		board_view_ref: BoardView, toast_ref: ToastStack, save_get: Callable,
-		adventure_get: Callable, runner_get: Callable, adventure_mode_get: Callable,
-		open_modal: Callable, open_modal_after_playback: Callable, close_modal: Callable,
-		refresh_presentations: Callable, fatal_screen: Callable, gp_summary: Callable) -> void:
-	db = db_ref
-	_meta_get = meta_get
-	curio_overlay = curio_overlay_ref
-	end_overlay = end_overlay_ref
-	board_view = board_view_ref
-	toast = toast_ref
-	_save_get = save_get
-	_adventure_get = adventure_get
-	_runner_get = runner_get
-	_adventure_mode_get = adventure_mode_get
-	_open_modal = open_modal
-	_open_modal_after_playback = open_modal_after_playback
-	_close_modal = close_modal
-	_refresh_presentations = refresh_presentations
-	_fatal_screen = fatal_screen
-	_gp_summary = gp_summary
+func _init(ctx: CurioFlowContext) -> void:
+	# 迭代 27 T4——构造参数收拢 context 对象（P1-5：16 参长签名收一处命名面；字段逐一同名迁移）
+	db = ctx.db
+	_meta_get = ctx.meta_get
+	curio_overlay = ctx.curio_overlay
+	end_overlay = ctx.end_overlay
+	board_view = ctx.board_view
+	toast = ctx.toast
+	_save_get = ctx.save_get
+	_adventure_get = ctx.adventure_get
+	_runner_get = ctx.runner_get
+	_adventure_mode_get = ctx.adventure_mode_get
+	_open_modal = ctx.open_modal
+	_open_modal_after_playback = ctx.open_modal_after_playback
+	_close_modal = ctx.close_modal
+	_refresh_presentations = ctx.refresh_presentations
+	_fatal_screen = ctx.fatal_screen
+	_gp_summary = ctx.gp_summary
 
 
 # 停点在途判据（组合根 _on_battle_end_continue 分派面——战斗总结确认后开三选一）