feat(boss): 位移/蓄力/近战招式 dash/charge_up/melee（三段式+前摇预警+接管移动）

scripts/autoloads/boss_manager.gd

@@ -130,6 +130,22 @@ func _start_pattern(boss_id: int, st: Dictionary, p: Dictionary) -> void:
 		"ring", "spread", "aimed", "spiral":
 			_fire_ranged(boss_id, st, kind, p, pos)
 			st["cooldown"] = float(p.get("cooldown", 2.0))
+		"dash":
+			_telegraph(p, pos)
+			st["action"] = {
+				"kind": "dash", "stage": "windup", "timer": float(p.get("windup", 0.8)),
+				"controls_move": true, "p": p,
+				"target": PlayerManager.get_position(), "dir": Vector2.RIGHT, "hit_cd": 0.0}
+		"charge_up":
+			_telegraph(p, pos)
+			st["action"] = {
+				"kind": "charge_up", "stage": "windup", "timer": float(p.get("windup", 1.0)),
+				"controls_move": true, "p": p}
+		"melee":
+			_telegraph(p, pos)
+			st["action"] = {
+				"kind": "melee", "stage": "windup", "timer": float(p.get("windup", 0.6)),
+				"controls_move": true, "p": p}
 		_:
 			st["cooldown"] = float(p.get("cooldown", 2.0))
 
@@ -164,9 +180,67 @@ func _fire_ranged(boss_id: int, st: Dictionary, kind: String, p: Dictionary, pos
 func _spawn_dir(pos: Vector2, angle: float, speed: float, life: float, r: float, dmg: float) -> void:
 	EnemyBulletManager.spawn_bullet(pos, Vector2(cos(angle), sin(angle)) * speed, life, r, dmg)
 
-# 招式推进（Task 8 补齐三段式）；骨架版直接结束
+## 前摇预警 VFX
+func _telegraph(p: Dictionary, pos: Vector2) -> void:
+	var vfx: String = String(p.get("telegraph_vfx", ""))
+	if vfx != "":
+		VFXManager.play(vfx, pos, 1.5)
+
+## 招式推进：三段式 windup → active → recover；结束还原并置冷却
 func _advance_action(boss_id: int, st: Dictionary, action: Dictionary, delta: float) -> void:
+	action["timer"] = float(action["timer"]) - delta
+	var p: Dictionary = action["p"]
+	var pos: Vector2 = EnemyManager.get_pos_by_id(boss_id)
+	match String(action["kind"]):
+		"dash":
+			match String(action["stage"]):
+				"windup":
+					if float(action["timer"]) <= 0.0:
+						var dir: Vector2 = Vector2(action["target"]) - pos
+						action["dir"] = dir.normalized() if dir.length() > 0.01 else Vector2.RIGHT
+						action["stage"] = "active"
+						action["timer"] = float(p.get("dash_time", 0.5))
+				"active":
+					pos += Vector2(action["dir"]) * float(p.get("dash_speed", 600.0)) * delta
+					EnemyManager.set_entity_pos(boss_id, pos)
+					action["hit_cd"] = maxf(0.0, float(action["hit_cd"]) - delta)
+					if pos.distance_to(PlayerManager.get_position()) <= float(p.get("contact_radius", 40.0)) and float(action["hit_cd"]) <= 0.0:
+						PlayerStats.take_damage(float(p.get("contact_damage", 15.0)))
+						action["hit_cd"] = float(p.get("contact_hit_cd", 0.4))
+					if float(action["timer"]) <= 0.0:
+						action["stage"] = "recover"
+						action["timer"] = float(p.get("recover", 0.8))
+				"recover":
+					if float(action["timer"]) <= 0.0:
+						_end_action(st, p)
+		"charge_up":
+			match String(action["stage"]):
+				"windup":
+					if float(action["timer"]) <= 0.0:
+						_fire_ranged(boss_id, st, String(p.get("release_kind", "ring")), p, pos)
+						action["stage"] = "recover"
+						action["timer"] = float(p.get("recover", 0.8))
+				"recover":
+					if float(action["timer"]) <= 0.0:
+						_end_action(st, p)
+		"melee":
+			match String(action["stage"]):
+				"windup":
+					if float(action["timer"]) <= 0.0:
+						if pos.distance_to(PlayerManager.get_position()) <= float(p.get("melee_radius", 90.0)):
+							PlayerStats.take_damage(float(p.get("melee_damage", 20.0)))
+						VFXManager.play("hit_spark", pos, 2.0)
+						action["stage"] = "recover"
+						action["timer"] = float(p.get("recover", 0.5))
+				"recover":
+					if float(action["timer"]) <= 0.0:
+						_end_action(st, p)
+		_:
+			st["action"] = {}
+
+func _end_action(st: Dictionary, p: Dictionary) -> void:
 	st["action"] = {}
+	st["cooldown"] = float(p.get("cooldown", 2.0))
 
 func _on_enemy_killed(payload: Dictionary) -> void:
 	var id: int = int(payload.get("entity_id", -1))