jump ani fixing and transition animations

movement/tests/test_fsm_runner.gd

@@ -41,6 +41,7 @@ func run_all() -> void:
 		"test_dash_adds_speed_to_forward_momentum",
 		"test_chain_bonus_soft_caps",
 		"test_notify_landed_emits_scaled_event",
+		"test_ground_release_has_short_stopping_glide",
 		"test_slide_entry_boosts_and_keeps_direction",
 		"test_grapple_state_registered_by_machine",
 	]
@@ -239,6 +240,25 @@ func test_notify_landed_emits_scaled_event() -> void:
 	_expect(sm.current_jump_count == 0, "landing resets jump count")
 
 
+func test_ground_release_has_short_stopping_glide() -> void:
+	var ground = sm.states["ground"]
+	var velocity := Vector3(0.0, 0.0, -params.walk_speed)
+	var distance := 0.0
+	var first_frame_speed := 0.0
+	for frame in 90:
+		velocity = ground._next_horizontal_velocity(
+			velocity, Vector3.ZERO, false, 1.0 / 60.0)
+		if frame == 0:
+			first_frame_speed = velocity.length()
+		distance += velocity.length() / 60.0
+		if velocity.length() <= 0.6:
+			break
+	_expect(first_frame_speed > params.walk_speed * 0.80,
+		"release keeps most momentum on its first frame")
+	_expect(distance > 0.75 and distance < 1.5,
+		"release produces a short stopping glide (%.2f m)" % distance)
+
+
 func test_slide_entry_boosts_and_keeps_direction() -> void:
 	sm.switch_to("ground")
 	fake_player.velocity = Vector3(0, 0, -12)  # faster than 0.8*walk_speed