tripocli v2.0.0：Tripo AI 3D 生成与加工 CLI（面向 Agent 与开发者，纯 Python 标准库、零第三方依赖）

覆盖文生 3D、图生 3D、多视图、批量生成，以及重拓扑、绑定、动画、智能分割、
纹理、PBR、智能 UV、部件补全、格式导出与下载。

代码组织：一个功能一个模块（tripo/features/），入口薄壳 tripocli.py。

tripo/features/cancel.py

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+"""取消任务 — cancel a running operation.
+
+    tripocli cancel --operator <operator_id> --type remesh
+
+实测请求体 ``{operator_id, scene, operation_type}``；``scene`` ∈ {workspace, assets}，
+``operation_type`` 的取值由服务端枚举决定（下面这份清单来自真实报错信息）：
+
+    text_to_model image_to_model multiview_to_model ai_segmentation ai_completion
+    mesh_fill modification skeleton_adjustment texture_generation pre_rig_check
+    rigging retarget stylize export retexture apply_texture pbr remesh
+    texture_upscaler image_edit_to_model
+
+⚠️ 图片生成任务**不在**该枚举内，无法取消。
+"""
+
+NAME = "cancel"
+HELP = "取消正在运行的任务（需指定操作类型）"
+
+OPERATION_TYPES = (
+    "text_to_model", "image_to_model", "multiview_to_model", "ai_segmentation",
+    "ai_completion", "mesh_fill", "modification", "skeleton_adjustment",
+    "texture_generation", "pre_rig_check", "rigging", "retarget", "stylize",
+    "export", "retexture", "apply_texture", "pbr", "remesh", "texture_upscaler",
+    "image_edit_to_model",
+)
+
+
+def add_arguments(parser):
+    parser.add_argument("--operator", required=True, help="要取消的 operator_id")
+    parser.add_argument("--type", required=True, choices=OPERATION_TYPES, help="要取消的任务类型")
+    parser.add_argument("--scene", default="workspace", choices=["workspace", "assets"], help="场景（默认 workspace）")
+
+
+def run(ctx):
+    args = ctx.args
+    data = ctx.client.get_data(
+        "POST", "/v2/studio/operation/cancel",
+        body={"operator_id": args.operator, "scene": args.scene, "operation_type": args.type},
+    )
+    payload = data or {"operator_id": args.operator, "cancelled": True}
+    ctx.out.data(payload, human=lambda: ctx.out.line(f"✅ 已取消: {args.operator}"))
+    return payload