Add starter RV progression and fishing feedback

tests/home_spawn_multiplayer_validation.gd

@@ -49,6 +49,7 @@ func _run_host() -> void:
 		host_fingerprint
 	)
 	assert(_same_door_position(host_avatar.global_position, host_spawn.origin))
+	assert(_faces_away_from_home(host_avatar, home_world, host_fingerprint))
 	assert(network_home.request_enter(host_fingerprint))
 	await physics_frame
 	host_avatar.global_position = home_world.get_interior_exit_position(
@@ -57,6 +58,7 @@ func _run_host() -> void:
 	assert(network_home.request_exit())
 	await physics_frame
 	assert(_same_door_position(host_avatar.global_position, host_spawn.origin))
+	assert(_faces_away_from_home(host_avatar, home_world, host_fingerprint))
 
 	var remote_peer_id: int = await _wait_for_remote_peer(session)
 	assert(remote_peer_id > 1)
@@ -70,6 +72,9 @@ func _run_host() -> void:
 	assert(_same_door_position(
 		remote_avatar.global_position, remote_spawn.origin
 	))
+	assert(_faces_away_from_home(
+		remote_avatar, home_world, remote_fingerprint
+	))
 
 	var disconnect_deadline: int = Time.get_ticks_msec() + 12000
 	while (
@@ -118,6 +123,7 @@ func _run_client() -> void:
 	assert(_same_door_position(
 		player.global_position, exterior_spawn.origin
 	))
+	assert(_faces_away_from_home(player, home_world, fingerprint))
 	print("Home spawn multiplayer client validation: PASS")
 	await _cleanup(main, session)
 
@@ -151,6 +157,23 @@ func _wait_for_home(
 	return false
 
 
+func _faces_away_from_home(
+	avatar: Player,
+	home_world: HomeWorldService,
+	fingerprint: String,
+) -> bool:
+	var exterior_basis: Basis = home_world.get_exterior_transform(
+		fingerprint
+	).basis
+	var outward_direction := exterior_basis.z
+	outward_direction.y = 0.0
+	if outward_direction.is_zero_approx():
+		return false
+	return avatar.get_facing_direction().dot(
+		outward_direction.normalized()
+	) >= 0.99
+
+
 func _wait_for_remote_peer(session: NetworkSession) -> int:
 	var deadline: int = Time.get_ticks_msec() + 20000
 	while Time.get_ticks_msec() < deadline: