Narrow the sunglasses and fix portrait-type parsing

Move the hinges to +/-0.075 (0.035 box), arms to +/-0.098, and lenses to a
0.024 m radius while keeping the lens plane in front of the eyes. Rebuild the
GLB and AO; fit now measures 0.202 m total width (0.64x head). capture_realism
now parses the documented --portrait-type option instead of ignoring it.
Python tooling 87/87; headless 228/228.

src/test/capture_realism.gd

@@ -112,6 +112,8 @@ func _parse_args() -> void:
 		elif text.begins_with("--stages="):
 			for name in text.substr(9).split(","):
 				_only_stages[name.strip_edges()] = true
+		elif text.begins_with("--portrait-type="):
+			_portrait_type = int(text.substr(16))
 
 func _pair(text: String, into: Dictionary) -> void:
 	var cut := text.find("=", 6) # skip the "res://" scheme