feat: Phase2 JLine终端交互增强 - 行编辑、历史、Tab补全、信号处理
JLine 3 集成: - ReplSession重写: JLine Terminal + LineReader 替代Scanner - 支持行编辑(光标移动、删除、Home/End等) - 持久化历史记录(~/.claude-code-java/history) - 上下箭头浏览输入历史 - Ctrl+C取消当前输入、Ctrl+D退出 - JLine失败时自动降级到Scanner模式 Tab补全: - ClaudeCodeCompleter: 斜杠命令补全(/后按Tab) - 支持命令别名补全(如 /q → exit) - 分组显示(Commands / Aliases) 新增命令: - /model: 显示当前AI模型信息 - /compact: 压缩对话上下文 - /cost: Token用量显示(占位) 改进: - HelpCommand清理为统一格式 - Banner增加终端信息显示和快捷键提示 - 彩色提示符使用AttributedStringBuilder Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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package com.claudecode.command.impl;
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import com.claudecode.command.CommandContext;
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import com.claudecode.command.SlashCommand;
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import com.claudecode.console.AnsiStyle;
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/**
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* /cost 命令 —— 显示 Token 使用量和费用估算。
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* <p>
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* 对应 claude-code/src/commands/cost.ts。
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* 当前为占位实现,后续接入实际 Token 统计。
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*/
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public class CostCommand implements SlashCommand {
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@Override
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public String name() {
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return "cost";
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}
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@Override
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public String description() {
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return "Show token usage and cost";
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}
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@Override
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public String execute(String args, CommandContext context) {
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int msgCount = 0;
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if (context.agentLoop() != null) {
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msgCount = context.agentLoop().getMessageHistory().size();
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}
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StringBuilder sb = new StringBuilder();
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sb.append("\n");
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sb.append(AnsiStyle.bold(" Token Usage:\n\n"));
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sb.append(" Messages: ").append(AnsiStyle.cyan(String.valueOf(msgCount))).append("\n");
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sb.append(" Input tokens: ").append(AnsiStyle.dim("(tracking not yet implemented)")).append("\n");
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sb.append(" Output tokens:").append(AnsiStyle.dim("(tracking not yet implemented)")).append("\n");
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sb.append(" Est. cost: ").append(AnsiStyle.dim("(tracking not yet implemented)")).append("\n");
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sb.append("\n");
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sb.append(AnsiStyle.dim(" Token tracking will be added in a future update."));
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return sb.toString();
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}
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}
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