fix: improve Anthropic tool_use streaming compatibility

app.py

@@ -513,21 +513,22 @@ def anthropic_stream(upstream_resp, model_for_output: str, has_tools: bool):
                             "type": "tool_use",
                             "id": blk["id"],
                             "name": blk["name"],
-                            "input": {},
                         },
                     },
                 )
-                yield sse(
-                    "content_block_delta",
-                    {
-                        "type": "content_block_delta",
-                        "index": idx,
-                        "delta": {
-                            "type": "input_json_delta",
-                            "partial_json": json.dumps(blk["input"], ensure_ascii=False),
+                _tool_json = json.dumps(blk["input"], ensure_ascii=False)
+                for _i in range(0, len(_tool_json), 120):
+                    yield sse(
+                        "content_block_delta",
+                        {
+                            "type": "content_block_delta",
+                            "index": idx,
+                            "delta": {
+                                "type": "input_json_delta",
+                                "partial_json": _tool_json[_i:_i+120],
+                            },
                         },
-                    },
-                )
+                    )
                 yield sse(
                     "content_block_stop",
                     {"type": "content_block_stop", "index": idx},
@@ -898,12 +899,6 @@ def chat_completions():
     )
 
 
-    log.info("启动 umans2api：http://%s:%d", HOST, PORT)
-    log.info("默认模型: %s", DEFAULT_MODEL)
-    log.info("可用模型: %s", ", ".join(AVAILABLE_MODELS))
-    log.info("Claude 映射: %s", CLAUDE_MODEL_MAP)
-    app.run(host=HOST, port=PORT, threaded=True)
-
 # ---------- 管理页辅助 ----------
 def mask_cookie_value(v):
     if not isinstance(v, str) or not v: