feat: SSHClient v1.0.0 - PyQt5 + paramiko 跨平台 SSH 客户端

功能:
- 多主机管理 (增删改查, 密码/私钥双认证, 导入导出)
- 远程终端 (命令执行 + 常用命令快捷栏 + 超时控制)
- SFTP 文件浏览 (上传/下载带进度, 新建/删除/重命名)
- 实时监控 (CPU/内存/磁盘/网络, 1-10秒可调刷新)
- AI Agent (OpenAI 兼容 API, 5 工具自动调用: 命令/指标/列文件/读文件/上传)

技术栈: PyQt5 + paramiko + psutil + requests + PyInstaller
打包: build_windows.bat / build.sh 一键产出 ~57MB 单文件 exe
测试: core 6/6 + UI 3/3 + E2E 6/6 全部通过

build.spec

@@ -0,0 +1,84 @@
+# -*- mode: python ; coding: utf-8 -*-
+"""
+PyInstaller spec for SSHClient
+在 Windows 上构建:
+  pip install -r requirements.txt
+  pyinstaller build.spec --clean --noconfirm
+产物: dist/SSHClient.exe (单文件, ~50MB)
+"""
+import sys
+from pathlib import Path
+
+block_cipher = None
+
+# 项目根
+ROOT = Path(SPECPATH).resolve() if 'SPECPATH' in dir() else Path('.').resolve()
+
+# 隐式导入（PyQt5 + paramiko 有动态导入，PyInstaller 偶尔抓不全）
+hiddenimports = [
+    "paramiko",
+    "cryptography",
+    "requests",
+    "psutil",
+    # PyQt5 子模块
+    "PyQt5.QtCore",
+    "PyQt5.QtGui",
+    "PyQt5.QtWidgets",
+]
+
+a = Analysis(
+    ['main.py'],
+    pathex=[str(ROOT)],
+    binaries=[],
+    datas=[
+        # 如果后续要加资源文件（图标、配置模板），放这里
+        # ('resources/icon.ico', 'resources'),
+    ],
+    hiddenimports=hiddenimports,
+    hookspath=[],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[
+        # 砍掉体积
+        "tkinter", "matplotlib", "numpy", "pandas", "scipy",
+        "PyQt5.QtBluetooth", "PyQt5.QtDBus", "PyQt5.QtDesigner",
+        "PyQt5.QtHelp", "PyQt5.QtLocation", "PyQt5.QtMultimedia",
+        "PyQt5.QtMultimediaWidgets", "PyQt5.QtNetwork", "PyQt5.QtNetworkAuth",
+        "PyQt5.QtNfc", "PyQt5.QtOpenGL", "PyQt5.QtPositioning",
+        "PyQt5.QtPrintSupport", "PyQt5.QtQml", "PyQt5.QtQuick",
+        "PyQt5.QtQuickWidgets", "PyQt5.QtRemoteObjects", "PyQt5.QtSensors",
+        "PyQt5.QtSerialPort", "PyQt5.QtSql", "PyQt5.QtSvg",
+        "PyQt5.QtTest", "PyQt5.QtWebChannel", "PyQt5.QtWebSockets",
+        "PyQt5.QtXml", "PyQt5.QtXmlPatterns",
+    ],
+    win_no_prefer_redirects=False,
+    win_private_assemblies=False,
+    cipher=block_cipher,
+    noarchive=False,
+)
+
+pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
+
+# 单文件 exe（启动稍慢但分发简单）；如需启动更快可改成 COLLECT + EXE
+exe = EXE(
+    pyz,
+    a.scripts,
+    a.binaries,
+    a.zipfiles,
+    a.datas,
+    [],
+    name='SSHClient',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=True,  # 如果装了 UPX 会进一步压缩
+    upx_exclude=[],
+    runtime_tmpdir=None,
+    console=False,  # GUI 模式不弹黑窗
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+    # icon='resources/icon.ico' if Path('resources/icon.ico').exists() else None,
+)