NEON-29: Descend lip peel when on_floor + wallish (first step → floor)

First terrace step to main floor could stall: is_on_floor stayed true on the
step top while a vertical face zeroed horizontal motion; vy was reset to 0 so
no gravity ran. Taller drops broke contact sooner so second→floor worked.
While descending (goal below feet) and on floor, if is_on_wall or any slide
normal is wall-ish (ny < 0.55), integrate gravity into vy before move_and_slide.

client/scripts/player.gd

@@ -250,9 +250,28 @@ func _set_horizontal_velocity_toward(point: Vector3, fallback_dir_xz: Vector3 =
 ## While walking, integrate gravity when airborne so Jolt can register floor contacts and
 ## `move_and_slide` is not stuck with vy=0 above the surface (expanded district / terraces).
 func _apply_walk_air_gravity(delta: float) -> void:
-	if is_on_floor():
+	var g_step: Vector3 = get_gravity() * delta
+	if not is_on_floor():
+		velocity += g_step
 		return
-	velocity += get_gravity() * delta
+	# Descending toward a lower surface (e.g. first terrace step → main floor): rim / internal
+	# edge contact can keep `is_on_floor()` true on the upper surface while the step's vertical
+	# face zeros horizontal motion. With vy forced to 0 by `_set_horizontal_velocity_toward`,
+	# no gravity ran and the capsule could hang until a new click retargeted. Shallow 0.3 m
+	# drops hit this more often than taller platform→floor descents.
+	var feet_on_floor: float = capsule_feet_y(global_position.y, CAPSULE_HALF_HEIGHT + PLAYER_CAPSULE_RADIUS)
+	var descending: bool = (
+		_has_walk_goal and _auth_walk_goal.y < feet_on_floor - DESCEND_GOAL_Y_MARGIN
+	)
+	if descending and g_step.y < 0.0:
+		var wallish: bool = is_on_wall()
+		if not wallish:
+			for i: int in get_slide_collision_count():
+				if get_slide_collision(i).get_normal().y < 0.55:
+					wallish = true
+					break
+		if wallish:
+			velocity.y += g_step.y
 
 
 ## When the authoritative goal shares XZ with the capsule (e.g. terrace above), horizontal