lint: ruff-clean testbed (blocking file write to thread, unused vars)

testbed/tests/test_bridge.py

@@ -15,7 +15,6 @@ from testbed.bridge import (
     VISION_WIDTH,
     build_bridge,
 )
-from testbed.room.world import Room
 
 
 @pytest.fixture

testbed/tests/test_render.py

@@ -21,7 +21,7 @@ def test_wall_nearby_is_bright_gray():
     room = Room()
     room.capsule.yaw_deg = 180.0  # face north wall 1.5m away
     px = Raycaster().render(room)[0].load()
-    r, g, b = px[80, 60]
+    r, g, _b = px[80, 60]
     assert abs(r - g) < 8 and r > 80  # gray wall, little fog at 1.5m
 
 
@@ -30,11 +30,11 @@ def test_beacon_glow_visible_when_facing_it():
     room.capsule.x, room.capsule.z, room.capsule.yaw_deg = 11.0, 11.0, 45.0
     img, _ = Raycaster().render(room)
     px = img.load()
-    r, g, b = px[80, 60]
+    r, _, b = px[80, 60]
     assert b > r  # inactive beacon glows cyan
     room.beacon.active = True
     px = Raycaster().render(room)[0].load()
-    r, g, b = px[80, 60]
+    r, _, b = px[80, 60]
     assert r > b  # active beacon glows warm yellow
 
 
@@ -42,7 +42,7 @@ def test_beacon_occluded_by_crate():
     room = Room()
     # Beacon behind crate_red from spawn: center pixel must not be cyan.
     px = Raycaster().render(room)[0].load()
-    r, g, b = px[80, 60]
+    _r, _g, b = px[80, 60]
     assert b < 90
 
 

testbed/tests/test_world.py

@@ -4,7 +4,7 @@ import math
 
 import pytest
 
-from testbed.room.world import ROOM_SIZE, Beacon, Box, Room
+from testbed.room.world import ROOM_SIZE, Room
 
 
 def test_spawn_state():
@@ -79,7 +79,7 @@ def test_turn_clamps_pitch():
 
 def test_look_at_beacon():
     room = Room()
-    yaw, pitch = room.look_at_beacon()
+    yaw, _pitch = room.look_at_beacon()
     dx = room.beacon.x - room.capsule.x
     dz = room.beacon.z - room.capsule.z
     assert yaw == pytest.approx(math.degrees(math.atan2(dx, dz)))