fix(ci): fix Format job failures from the small-world commit

Mark the two new Python scripts executable (both carry a shebang) and fix
ruff's N806 (uppercase locals in gen_small_world.py's build_map) and N811
(constant imported under a lowercase alias in verify_sim.py).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Af2qGVQQHArcTfQZvHA6aN
Signed-off-by: David Bensoussan <d.bensoussan@proton.me>

Author: Minipada

dc_demos/dc_demos/qrcodes_small_waypoint_follower.py

@@ -255,8 +255,8 @@ def build_map():
     origin_x = -MAP_HALF_X
     origin_y = -MAP_HALF_Y
 
-    UNKNOWN, FREE, OCCUPIED = 205, 254, 0
-    grid = [[UNKNOWN] * width for _ in range(height)]
+    unknown, free, occupied = 205, 254, 0
+    grid = [[unknown] * width for _ in range(height)]
 
     def to_px(x, y):
         return (round((x - origin_x) / RESOLUTION), round((y - origin_y) / RESOLUTION))
@@ -270,17 +270,17 @@ def fill_rect(x0, y0, x1, y1, value):
 
     outer_x = HALF_X + WALL_T
     outer_y = HALF_Y + WALL_T
-    fill_rect(-outer_x, -outer_y, outer_x, outer_y, FREE)
-    fill_rect(-outer_x, -outer_y, -HALF_X, outer_y, OCCUPIED)  # west wall
-    fill_rect(HALF_X, -outer_y, outer_x, outer_y, OCCUPIED)  # east wall
-    fill_rect(-outer_x, -outer_y, outer_x, -HALF_Y, OCCUPIED)  # south wall
-    fill_rect(-outer_x, HALF_Y, outer_x, outer_y, OCCUPIED)  # north wall
+    fill_rect(-outer_x, -outer_y, outer_x, outer_y, free)
+    fill_rect(-outer_x, -outer_y, -HALF_X, outer_y, occupied)  # west wall
+    fill_rect(HALF_X, -outer_y, outer_x, outer_y, occupied)  # east wall
+    fill_rect(-outer_x, -outer_y, outer_x, -HALF_Y, occupied)  # south wall
+    fill_rect(-outer_x, HALF_Y, outer_x, outer_y, occupied)  # north wall
 
     # Each pallet+bag stack, approximated as a 1.0 x 1.3 m footprint around its own
     # origin (europallet_bag's model origin, QR_DX behind the QR face).
     for qr_face_x, y, _ in STATIONS:
         pallet_x = qr_face_x - QR_DX
-        fill_rect(pallet_x - 0.6, y - 0.65, pallet_x + 0.4, y + 0.65, OCCUPIED)
+        fill_rect(pallet_x - 0.6, y - 0.65, pallet_x + 0.4, y + 0.65, occupied)
 
     # PGM rows run top-to-bottom, i.e. decreasing y (map_server convention, matching
     # qrcodes.pgm) -- row 0 of the image is the map's northmost row.

dc_simulation/tools/gen_small_world.py

@@ -293,7 +293,9 @@ def ground_truth_codes(path=None):
     if world_to_map_env:
         world_to_map = tuple(float(v) for v in world_to_map_env.split(","))
     else:
-        from lint_launch_files import WORLD_TO_MAP as world_to_map
+        from lint_launch_files import WORLD_TO_MAP
+
+        world_to_map = WORLD_TO_MAP
 
     world = re.sub(r"<!--.*?-->", "", pathlib.Path(path).read_text(), flags=re.S)