Event pages and NPC move routes on RPG maps; rpg action schemas; walk test passes the RPG Plus prologue

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

locale/schema_ko.properties

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+rpg/schema/builtin/rpg_battle = 맵에서 전투
+rpg/schema/builtin/rpg_battle_desc = 적은 쉼표로 구분. 이기면 승리 플래그 설정
+rpg/schema/field/enemies = 적
+rpg/schema/field/win_flag = 승리 플래그
+rpg/schema/builtin/rpg_teleport = 맵에서 이동
+rpg/schema/builtin/rpg_teleport_desc = 칸과 방향. 맵은 선택
+rpg/schema/field/map = 맵
+rpg/schema/field/x = X
+rpg/schema/field/y = Y
+rpg/schema/field/dir = 방향