fix(parity): implement ground click ripple, target select glow, and 3D projectile obstacle collision with regression probes

project/player_controller.gd

@@ -10,6 +10,7 @@ extends Node
 
 signal anim_state(state: String)
 signal target_selected(node: Node3D)
+signal ground_clicked(world_pos: Vector3)
 signal ground_item_clicked(vid: int)
 signal moved(pos: Vector3)
 # game.py OnRender：wndMgr.IsPickedWindow 门内 chr.Pick() 拾到的角色 -> ShowCharacterTextTail。
@@ -251,6 +252,7 @@ func _on_click(screen_pos: Vector2) -> void:
 			return
 		if cancel_fishing_input.is_valid() and bool(cancel_fishing_input.call()):
 			return
+		ground_clicked.emit(Vector3(hit.x, hit.y, hit.z))
 		_goto(hit)
 
 # 射线 vs 实体(节点下所有 MeshInstance3D 的世界 AABB 合并)的进入距离 t;不命中返回 -1。