xiaoli-cli 7.0.0: 重构底层架构 + 移除工具截断

- 重构 core/ 底层 (7文件): app/runner/engine/parser/history/safety/display
- FC原生调用为主，prompt-JSON保底
- 移除所有工具返回截断 (ai_search/git_tools/cmd_executor/browser_auto/network_tools/sub_agent/tool_search)
- 删除无用文件 (旧服务器/WebUI/彩蛋/启动器等21个文件)
- 清理 constants.py 死代码
- 版本号更新为 7.0.0

xcli_core/constants.py

@@ -0,0 +1,87 @@
+# 常量定义
+WEB_SERVER_DEFAULT_PORT = 8080
+MAX_FILE_SIZE = 52428800  # 50MB
+MAX_VIDEO_DURATION = 10000  # 10秒
+VIDEO_FRAME_DELAY = 0.04  # 40毫秒
+LOVE_FILE_PATH = "love.txt"
+DEFAULT_MAX_HISTORY = 999999  # 无限制对话历史
+
+import os
+import sys
+import importlib.util
+import json
+import re
+import shutil
+import time
+import threading
+from concurrent.futures import ThreadPoolExecutor, as_completed
+from colorama import init, Fore, Style
+from http.server import HTTPServer, BaseHTTPRequestHandler
+from urllib.parse import urlparse, parse_qs
+import socket
+import webbrowser
+from datetime import datetime
+import logging
+import asyncio
+from typing import Optional
+from io import StringIO
+
+# ── 第三方依赖（全部 try/except 保护） ──
+
+try:
+    import requests
+    REQUESTS_AVAILABLE = True
+except ImportError:
+    requests = None
+    REQUESTS_AVAILABLE = False
+
+try:
+    from openai import OpenAI
+    OPENAI_AVAILABLE = True
+except ImportError:
+    OpenAI = None
+    OPENAI_AVAILABLE = False
+
+try:
+    import numpy as np
+    NUMPY_AVAILABLE = True
+except ImportError:
+    np = None
+    NUMPY_AVAILABLE = False
+
+# tkinter 仅在视频播放功能中使用，服务器环境可能不可用
+try:
+    import tkinter as tk
+    from tkinter import ttk
+    TKINTER_AVAILABLE = True
+except ImportError:
+    TKINTER_AVAILABLE = False
+
+# cv2 仅在视频播放功能中使用
+try:
+    import cv2
+    CV2_AVAILABLE = True
+except ImportError:
+    CV2_AVAILABLE = False
+
+# 图像显示相关（可选）
+try:
+    from PIL import Image
+    PIL_AVAILABLE = True
+except ImportError:
+    PIL_AVAILABLE = False
+
+try:
+    from ascii_magic import AsciiArt
+    ASCII_MAGIC_AVAILABLE = True
+except ImportError:
+    ASCII_MAGIC_AVAILABLE = False
+
+# 统一工具管理器 - 支持 Liugin 和 Skill 双协议
+try:
+    from unified_tool_manager import UnifiedToolManager
+    UNIFIED_TOOL_MANAGER_AVAILABLE = True
+except ImportError:
+    UNIFIED_TOOL_MANAGER_AVAILABLE = False
+
+# TUI 模式已移除，全面使用 CLI 模式