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/output.py

@@ -0,0 +1,46 @@
+"""Terminal output helpers.
+
+Every command prints either a human readable block or, with ``--json``, a single
+JSON document on stdout so an agent can parse it.  Errors go to stderr (and to a
+JSON object on stdout when ``--json`` is active) so stdout stays machine safe.
+"""
+
+import json
+import sys
+
+
+class Out:
+    def __init__(self, as_json=False):
+        self.as_json = as_json
+
+    def json(self, payload):
+        print(json.dumps(payload, indent=2, ensure_ascii=False))
+
+    def data(self, payload, human=None):
+        """Print ``payload`` as JSON, or ``human()`` when not in JSON mode."""
+        if self.as_json:
+            self.json(payload)
+        elif human:
+            human()
+
+    def line(self, text=""):
+        if not self.as_json:
+            print(text)
+
+    def notice(self, text):
+        """Progress/warning for humans; goes to stderr so stdout stays parseable."""
+        print(text, file=sys.stderr)
+
+    def progress(self, text):
+        """In-place progress line; suppressed in JSON mode."""
+        if not self.as_json:
+            print(text, end="\r", flush=True)
+
+    def progress_done(self):
+        if not self.as_json:
+            print()
+
+    def error(self, message):
+        if self.as_json:
+            self.json({"error": str(message)})
+        print(f"❌ {message}", file=sys.stderr)