# Implementation Plan: [FEATURE]

**Branch**: `[###-feature-name]` | **Date**: [DATE] | **Spec**: [link]
**Input**: Feature specification from `/specs/[###-feature-name]/spec.md`

**Note**: This template is filled in by the `/speckit.plan` command. See `.specify/templates/plan-template.md` for the execution workflow.

## Summary

[Extract from feature spec: primary requirement + technical approach from research]

## Technical Context

<!--
  ACTION REQUIRED: Replace the content in this section with the technical details
  for the project. The structure here is presented in advisory capacity to guide
  the iteration process.
-->

**Language/Version**: Rust 最新稳定版 (edition = "2024")
**Primary Dependencies**: clap 4.x, serde, serde_json, toml, anyhow, dirs, colored
**Storage**: 配置文件 (~/.agentswitch/config.toml) + 系统密钥链
**Testing**: cargo test (单元 + 集成测试)
**Target Platform**: Linux, macOS, Windows (跨平台 CLI 工具)
**Project Type**: cli (命令行工具)
**Performance Goals**: 配置切换 < 100ms, 启动时间 < 50ms
**Constraints**: 无网络依赖（本地操作），离线可用
**Scale/Scope**: 单用户工具，支持 10+ 个 Code Agent 工具

## 宪章合规性检查 (Constitution Check)

*GATE: 在 Phase 0 研究前必须通过。Phase 1 设计后再次检查。*

### 强制要求（来自 .specify/memory/constitution.md）

- [ ] **Rust 2024 标准**: 代码使用 edition = "2024"，通过 `cargo clippy` 无警告
- [ ] **中文文档**: plan.md, spec.md, tasks.md 全部使用中文编写
- [ ] **测试驱动**: 单元测试覆盖率 ≥ 80%
- [ ] **集成测试**: 每个功能完成后执行完整集成测试
- [ ] **安全优先**: API Key 加密存储，配置文件权限 600
- [ ] **向后兼容**: 配置变更提供迁移脚本

## Project Structure

### Documentation (this feature)

```text
specs/[###-feature]/
├── plan.md              # This file (/speckit.plan command output)
├── research.md          # Phase 0 output (/speckit.plan command)
├── data-model.md        # Phase 1 output (/speckit.plan command)
├── quickstart.md        # Phase 1 output (/speckit.plan command)
├── contracts/           # Phase 1 output (/speckit.plan command)
└── tasks.md             # Phase 2 output (/speckit.tasks command - NOT created by /speckit.plan)
```

### Source Code (repository root)
<!--
  ACTION REQUIRED: Replace the placeholder tree below with the concrete layout
  for this feature. Delete unused options and expand the chosen structure with
  real paths (e.g., apps/admin, packages/something). The delivered plan must
  not include Option labels.
-->

```text
# Option 1: Single project (DEFAULT - Rust CLI)
src/
├── main.rs              # 程序入口
├── cli/                 # CLI 命令定义
│   ├── mod.rs
│   ├── commands.rs
│   └── args.rs
├── config/              # 配置管理
│   ├── mod.rs
│   ├── store.rs         # 配置存储
│   └── models.rs        # 数据模型
└── agents/              # Agent 适配器
    ├── mod.rs
    ├── adapter.rs       # 适配器 trait
    ├── claude_code.rs   # Claude Code 适配器
    ├── codex.rs         # Codex 适配器
    └── others.rs        # 其他工具适配器

tests/
├── integration/         # 集成测试
├── unit/                # 单元测试
└── fixtures/            # 测试数据
```

**Structure Decision**: [Document the selected structure and reference the real
directories captured above]

## 复杂度跟踪 (Complexity Tracking)

> **仅在宪章合规性检查存在违规需要论证时填写**

| 违规项 | 为什么需要 | 拒绝更简单方案的原因 |
|-----------|------------|-------------------------------------|
| [例如: 额外的依赖库] | [当前需求] | [为什么更简单的 3 个依赖不足] |
| [例如: 复杂的设计模式] | [特定问题] | [为什么直接访问不足] |
