Add story beats to opening battle

scripts/scenes/battle_scene.gd

@@ -125,6 +125,7 @@ const SPEAKER_DISPLAY_NAMES := {
 	"Cao Ang": "조앙",
 	"Xu Rong": "서영",
 	"Li Jue": "이각",
+	"Zhang Mancheng": "장만성",
 	"Chen Gong": "진궁",
 	"Gao Shun": "고순",
 	"Lu Bu": "여포",
@@ -173,6 +174,7 @@ const SPEAKER_CANONICAL_NAMES := {
 	"조앙": "Cao Ang",
 	"서영": "Xu Rong",
 	"이각": "Li Jue",
+	"장만성": "Zhang Mancheng",
 	"진궁": "Chen Gong",
 	"고순": "Gao Shun",
 	"여포": "Lu Bu",
@@ -211,6 +213,7 @@ const DIALOGUE_RIGHT_SIDE_SPEAKERS := {
 	"Yuan Scout": true,
 	"Imperial Envoy": true,
 	"Imperial Guard": true,
+	"Zhang Mancheng": true,
 	"Xu Rong": true,
 	"Li Jue": true,
 	"Zhang Xiu": true,