Move the shoulder bag clear of coat and dress skirts

Narrow the bag to 0.06 m and move it outboard to centre x=0.292. The body inner
face is now 0.262 m, clearing the coat skirt (0.225) and dress (0.260); the
strap lower points start on the same line. The fit report measures the bag body
separately from the torso strap and uses a signed inner-face clearance. Run
Blender build/bake and Godot import. Python tooling 87/87.

tools/test_blender_assets.py

@@ -57,6 +57,8 @@ class BuiltAssetTests(unittest.TestCase):
         bag = next(row for row in coat["gear"] if row["name"] == "shoulder_bag")
         self.assertEqual(bag["attach"], "back")
         self.assertGreaterEqual(bag["x_extent"], 0.2)
+        self.assertGreater(bag["x_clearance"], 0)
+        self.assertGreater(bag["inner_x"], coat["reference"]["clothing_radius"])
         for character in report.values():
             for row in character["gear"]:
                 self.assertEqual(len(row["min"]), 3)