feat(agent): 预设本机工具、stdio MCP 传输与多轮上下文

- 预设 12 个本机工具并默认启用，装好即是可操作电脑的 Agent、无需总控配置或安装：
  文件与文件夹的查看/读取/写入/建目录/移动/删除（默认不覆盖、删目录需 recursive、
  拒绝删除系统目录与用户根目录）、用默认程序打开网址或文件、时间与时区换算
  （tzdata 已随包内置）、查看进程、屏幕截图、读写剪贴板。
- 工具下发改为通用：任意 HTTP MCP 服务与 stdio 本机命令（Agent 拉起子进程，
  容忍 stdout 噪声，命令缺失或进程崩溃会明确回报），支持多工具并存、
  定义未变更时复用连接、替换/删除/退出时回收子进程。
- 多轮上下文：task_dispatch.history 作为此前的 user/assistant 文本拼接到本次请求前，
  OpenAI 兼容、Anthropic、Gemini 分别适配；Agent 侧独立校验与限幅。
- 工具级实时进度以 progress 事件回传；使用预设工具的任务标记为 builtin 执行来源。
- Skill 与历史内容上限与总控对齐，多个已批准 Skill 不再被静默截断。
- 修复 build.ps1 缺 UTF-8 BOM 导致 build.bat 在 PowerShell 5.1 下语法报错。

mulit_agent/tests/test_image_attachments.py

@@ -50,10 +50,50 @@ def test_provider_image_payloads(monkeypatch):
     assert captured[2]["contents"][0]["parts"][1]["inline_data"]["mime_type"] == "image/png"
 
 
+def test_anthropic_and_gemini_receive_the_conversation_history(monkeypatch):
+    captured: list[dict[str, object]] = []
+
+    class Response:
+        def __init__(self, payload):
+            self.payload = payload
+
+        def __enter__(self):
+            return self
+
+        def __exit__(self, *_):
+            return False
+
+        def read(self):
+            return json.dumps(self.payload).encode()
+
+    def fake_urlopen(request, timeout):
+        captured.append(json.loads(request.data.decode()))
+        if request.full_url.endswith("/messages"):
+            return Response({"content": [{"type": "text", "text": "好的"}]})
+        return Response({"candidates": [{"content": {"parts": [{"text": "好的"}]}}]})
+
+    monkeypatch.setattr("mulit_agent_app.infrastructure.provider_factory.urlopen", fake_urlopen)
+    history = (("user", "下载到 D:\\demo"), ("assistant", "已下载到 D:\\demo\\a.zip"))
+
+    assert AnthropicProvider("https://example", "model", Credentials()).generate("把它复制到 D:\\target", history=history) == "好的"
+    assert GeminiProvider("https://example", "model", Credentials()).generate("把它复制到 D:\\target", history=history) == "好的"
+
+    assert captured[0]["messages"] == [
+        {"role": "user", "content": "下载到 D:\\demo"},
+        {"role": "assistant", "content": "已下载到 D:\\demo\\a.zip"},
+        {"role": "user", "content": [{"type": "text", "text": "把它复制到 D:\\target"}]},
+    ]
+    assert captured[1]["contents"] == [
+        {"role": "user", "parts": [{"text": "下载到 D:\\demo"}]},
+        {"role": "model", "parts": [{"text": "已下载到 D:\\demo\\a.zip"}]},
+        {"role": "user", "parts": [{"text": "把它复制到 D:\\target"}]},
+    ]
+
+
 def test_anthropic_and_gemini_complete_local_tool_calls(monkeypatch):
     responses = {
         "anthropic": [
-            {"content": [{"type": "tool_use", "id": "anthropic-call", "input": {"command": "Write-Output anth"}}]},
+            {"content": [{"type": "tool_use", "id": "anthropic-call", "name": "run_powershell", "input": {"command": "Write-Output anth"}}]},
             {"content": [{"type": "text", "text": "Anthropic 已执行。"}]},
         ],
         "gemini": [