feat: 增强编码能力 - 新增代码编辑器、代码搜索、Git集成

- 新增 plugins/code_editor.py: 精准代码编辑（搜索替换、批量编辑、diff对比）
- 新增 plugins/code_search.py: 代码搜索与理解（跨文件搜索、符号提取、依赖分析）
- 新增 plugins/git_tools.py: Git 版本控制（status/diff/log/commit/branch）
- 新增 core/ 模块: 配置管理、引擎管理、对话处理、显示输出、代码沙箱
- 修复 requirements.txt: 使用正确的 pip 包名（Pillow、opencv-python 等）
- 更新 unified_tool_manager.py: 兼容 Plugin 和 Liugin 两种类名
- 更新系统提示词: 增强编程工作流指导

本次更新由 mimo 自动化执行，与开发者无关。

core/display.py

@@ -0,0 +1,131 @@
+"""
+显示与输出模块 - 统一 CLI/TUI 输出
+"""
+import sys
+import os
+import time
+import random
+import shutil
+import threading
+from colorama import Fore, Style
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class Display:
+    """统一显示管理器"""
+
+    def __init__(self, user_id="", tui_callback=None):
+        self.user_id = user_id
+        self.tui_callback = tui_callback
+
+    def output(self, message):
+        """统一输出方法"""
+        if self.tui_callback:
+            self.tui_callback(message)
+        else:
+            print(message)
+
+    def response(self, content, is_continue=False):
+        """显示 AI 响应"""
+        user_id_display = f"[用户ID: {self.user_id}]"
+        lines = content.split('\n')
+
+        for i, line in enumerate(lines):
+            if i == 0:
+                prefix = f"{Fore.YELLOW}✦{Style.RESET_ALL} " if is_continue else "✦ "
+                line = prefix + line
+            if i == len(lines) - 1:
+                print(f"{line} {user_id_display}")
+            else:
+                print(line)
+        print()
+
+    def tool_result(self, tool_name, tool_args, full_result, is_error=False):
+        """显示工具执行结果"""
+        if full_result is None:
+            full_result = "无结果"
+
+        self.output("")
+        user_id_display = f"[用户ID: {self.user_id}]"
+
+        if is_error:
+            self.output(f"{Fore.RED}     X 工具: {tool_name}{Style.RESET_ALL}")
+            self.output(f"{Fore.RED}     参数: {tool_args} {user_id_display}{Style.RESET_ALL}")
+        else:
+            self.output(f"{Fore.GREEN}     OK 工具: {tool_name}{Style.RESET_ALL}")
+            self.output(f"{Fore.GREEN}     参数: {tool_args} {user_id_display}{Style.RESET_ALL}")
+
+        display_result = self._limit_lines(full_result, max_lines=2)
+        color = Fore.RED if is_error else Fore.GREEN
+        for line in display_result.split('\n'):
+            self.output(f"{color}          {line}{Style.RESET_ALL}")
+
+    def error(self, message):
+        """显示错误"""
+        self.output(f"{Fore.RED}{message}{Style.RESET_ALL}")
+
+    def success(self, message):
+        """显示成功"""
+        self.output(f"{Fore.GREEN}{message}{Style.RESET_ALL}")
+
+    def info(self, message):
+        """显示信息"""
+        self.output(f"{Fore.CYAN}{message}{Style.RESET_ALL}")
+
+    def warning(self, message):
+        """显示警告"""
+        self.output(f"{Fore.YELLOW}{message}{Style.RESET_ALL}")
+
+    def typeprint(self, text, color=None, delay=0.01):
+        """打字机效果输出"""
+        for char in text:
+            if color:
+                print(f"{color}{char}{Style.RESET_ALL}", end="", flush=True)
+            else:
+                print(char, end="", flush=True)
+            time.sleep(delay)
+        print()
+
+    def thinking_animation(self, sentences, stop_event, esc_event):
+        """等待动画"""
+        if not sentences:
+            sentences = ["AI正在思考中...", "请稍等片刻...", "正在处理您的请求..."]
+
+        last_change = time.time()
+        current_sentence = random.choice(sentences)
+        chars = "|/-\\"
+        idx = 0
+
+        while not stop_event.is_set():
+            now = time.time()
+            if now - last_change >= 5:
+                current_sentence = random.choice(sentences)
+                last_change = now
+
+            char = chars[idx % len(chars)]
+            display = current_sentence[:47] + "..." if len(current_sentence) > 50 else current_sentence
+            print(f"\r{Fore.MAGENTA}{display} {char}{Style.RESET_ALL}", end="", flush=True)
+            idx += 1
+            time.sleep(0.1)
+
+        print("\r" + " " * 60 + "\r", end="", flush=True)
+
+    def _limit_lines(self, text, max_lines=2):
+        """限制输出行数"""
+        lines = text.split('\n')
+        if len(lines) <= max_lines:
+            return text
+        return '\n'.join(lines[:max_lines]) + f"\n... (已截断，共{len(lines)}行)"
+
+    def show_banner(self, engine_name, engines, user_id):
+        """显示启动横幅"""
+        self.success(f"小狸 Pro-CLI 已启动!")
+        self.success(f"用户ID: {user_id}")
+        print(f"{Fore.GREEN}输入 '/help' 查看帮助信息{Style.RESET_ALL}")
+        print(f"{Fore.GREEN}输入 '/quit' 退出程序{Style.RESET_ALL}")
+        print(f"{Fore.GREEN}当前引擎: {engine_name}{Style.RESET_ALL}")
+        if len(engines) > 1:
+            print(f"{Fore.GREEN}已加载引擎: {', '.join(engines)}{Style.RESET_ALL}")
+        print(f"{Fore.GREEN}{'-' * 50}{Style.RESET_ALL}")