forked from WHC/Hermit
Initial CST-Agent: portable Linux/Termux/Windows coding agent.
Vendored sashidown, OpenAI-compatible env (OPENAI_*), and bootstrap scripts. Co-authored-by: Cursor <cursoragent@cursor.com>
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WHC
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# CST-Agent
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C11 OpenCode-like carrier that extends paper **CST** (confirmation frontier / irreversible emission) from Markdown→HTML to the **agent tool loop**.
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See [docs/theory_tool_cst.md](docs/theory_tool_cst.md).
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评测/反哺论文素材：[docs/eval_tool_cst.md](docs/eval_tool_cst.md)。
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## 能不能用来工作？
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**可以**：有监督的本地小改动 / 探索本仓库（TUI + 工具 + 权限确认）。
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**不宜**：无人值守长任务或当 CI 主力（网关偶发空答、无完整 diff UI）。
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### 5 分钟试用
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```bash
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# 一键拉取编译（Linux）
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curl -fsSL https://git.whcself.xyz/WHC/CST-agent/raw/branch/main/scripts/bootstrap_linux.sh | bash
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# 或已有仓库：
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cd CST-agent && ./scripts/bootstrap_linux.sh .
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# OpenAI 官方
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export OPENAI_API_KEY='sk-...'
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export OPENAI_BASE_URL='https://api.openai.com/v1'
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export OPENAI_MODEL='gpt-4.1-mini'
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./cst-agent --workspace .
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```
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完整环境变量说明：[docs/env_openai.md](docs/env_openai.md)。
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| 平台 | 一键脚本 |
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|---|---|
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| Linux | [`scripts/bootstrap_linux.sh`](scripts/bootstrap_linux.sh) |
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| Termux | [`scripts/bootstrap_termux.sh`](scripts/bootstrap_termux.sh) |
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| Windows 交叉构建（在 Linux 上） | [`scripts/bootstrap_windows.sh`](scripts/bootstrap_windows.sh) → `dist/windows-x86_64/` |
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| Windows 运行 | 拷贝 dist 后 [`scripts/run_windows.bat`](scripts/run_windows.bat) |
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### 迷你验收工程（论文案例）
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故意带 bug 的小计算器：[`fixtures/mini_calc/`](fixtures/mini_calc/)（任务书 `TASK.md`）。
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```bash
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./scripts/e2e_mini_calc.sh --baseline-only # 无 API：证明初始测试 RED
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./scripts/e2e_mini_calc.sh # 有 key：agent 修复后 make test
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```
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口径：`pass` / `partial` / `fail` — 见 [docs/eval_tool_cst.md](docs/eval_tool_cst.md)。
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## Build
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### Make（Linux 默认）
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```bash
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cd agent
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make
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make check
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```
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### CMake（推荐跨编译器 / 交叉）
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```bash
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# GCC
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cmake -B build-gcc -DCMAKE_C_COMPILER=gcc -DCST_BUILD_TUI=ON
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cmake --build build-gcc && ctest --test-dir build-gcc
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# Clang
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cmake -B build-clang -DCMAKE_C_COMPILER=clang -DCST_BUILD_TUI=ON
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cmake --build build-clang
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# Headless only（无 ncurses）
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cmake -B build-hd -DCST_BUILD_TUI=OFF && cmake --build build-hd
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# Windows MinGW 交叉（需安装 mingw-w64）
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cmake -B build-win -DCMAKE_TOOLCHAIN_FILE=cmake/mingw-w64-x86_64.cmake \
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-DCST_BUILD_TUI=OFF
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cmake --build build-win
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# TUI：安装 PDCurses 后 -DCST_BUILD_TUI=ON -DPDCurses_ROOT=...
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```
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依赖：`gcc` 或 `clang`、`libcurl`、Linux TUI 需 `ncursesw`；Windows TUI 需 **PDCurses**；sibling `../SD`（`libsashidown.a`）。
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API Key：env / 配置文件 / **zenity（Linux）或控制台输入（Windows / 无 zenity）**。
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## 平台支持矩阵
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| OS | Arch | 编译器 | Headless | TUI | Shell |
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|---|---|---|---|---|---|
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| Linux | x86_64 / aarch64 | GCC, Clang | yes | ncursesw | `/bin/sh` 或旁路 `busybox` |
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| Android Termux | aarch64 / … | Clang (Termux) | yes | ncurses（Termux 包） | `$PREFIX/bin/sh`；可旁路 busybox |
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| Windows | x86_64 / aarch64 | MinGW GCC/Clang | yes | PDCurses | **捆绑 busybox-w32** |
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| macOS | — | — | **不做** | — | — |
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### Termux
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```bash
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pkg install clang make cmake libcurl ncurses-ui-libs
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cmake -B build -DCST_BUILD_TUI=ON && cmake --build build
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# 可选：旁路 Unix busybox
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# ./scripts/build_third_party_mingw.sh busybox-unix
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```
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环境：`PREFIX` 自动用于找 `sh`；`CST_EXE_DIR` / `argv[0]` 用于定位旁路 busybox（`/proc/self/exe` 受限时）。
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### Windows 发行包
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见 [docs/README-windows.md](docs/README-windows.md)。交叉构建：
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```bash
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./scripts/build_third_party_mingw.sh all # curl+PDCurses+busybox-w32
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# 源码：https://github.com/rmyorston/busybox-w32.git
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# https://github.com/mirror/busybox.git （Unix）
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cmake -B build-win-tui -DCMAKE_TOOLCHAIN_FILE=cmake/mingw-w64-x86_64.cmake \
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-DCST_BUILD_TUI=ON -DCMAKE_PREFIX_PATH=$PWD/third_party/prefix-mingw
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```
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产物示例：`dist/windows-x86_64/`（含 `cst-agent.exe` + `busybox.exe` + `libwinpthread-1.dll`）。
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环境变量：`CST_SHELL`、`CST_EXE_DIR`、`CST_AUTO_APPROVE` 等。
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## Defaults (API)
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默认 MiniMax：`https://api.minimax.cn/v1` / `MiniMax-M2.7`。
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对接 **OpenAI 官方或其它兼容网关** 时设置：
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| 用途 | 推荐变量 | 等价别名 |
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|---|---|---|
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| Key | `OPENAI_API_KEY` | `CST_API_KEY`、`MINIMAX_API_KEY` |
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| Base（含 `/v1`） | `OPENAI_BASE_URL` | `CST_API_BASE`、`OPENAI_API_BASE` |
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| Model | `OPENAI_MODEL` | `CST_MODEL` |
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详见 [docs/env_openai.md](docs/env_openai.md)。
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| 项 | 默认（未设 OPENAI_* 时） |
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| API Base | `https://api.minimax.cn/v1` |
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| Model | `MiniMax-M2.7` |
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| API Key | env → 配置目录 credentials → zenity/控制台 |
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环境变量：`CST_MODELS`、`CST_AUTO_APPROVE=1`、`CST_SHELL`、`CST_EXE_DIR`。
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## Run
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```bash
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# Local CTL demo (no API)
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./cst-agent --demo-ctl --workspace .
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# TUI（OpenCode 风格；Assistant Markdown 经 Sashidown CST 渲染）
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./cst-agent --workspace ..
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# 强制重新弹窗保存 Key
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./cst-agent --ask-key --workspace .
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# Headless（默认 auto-approve shell/写文件）
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./cst-agent --headless --prompt 'List files' --workspace .
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```
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### TUI 快捷键与斜杠命令
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| 操作 | 说明 |
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| Enter | 发送；空输入展开最近 tool 卡；busy 时入队（最多 3） |
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| Ctrl+N | 输入换行（多行 composer） |
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| ↑ / ↓ | 提示历史 |
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| Esc / Ctrl+C | busy 时取消当前 turn |
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| Tab / `t`（空输入） | 展开/折叠 Thought |
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| 权限 | shell/写文件：`y` 允许 · `n` 拒绝 · `a` 本进程对该工具 Always |
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| `/new` | 新会话 |
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| `/session` | **可点选**会话列表（↑↓ Enter）；`/session <id>` 手打切换 |
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| `/model` | **可点选**模型；`/model NAME` 直接设置（进程内） |
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| `/compact` | 压缩上下文 |
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| `/details` | 展开/折叠全部 tool 输出 |
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| `/help` | 帮助 |
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会话落盘：`<workspace>/.agent/sessions/<id>.jsonl` + `CURRENT`。
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### 协议
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- OpenAI 兼容 `POST …/chat/completions`：原生 `tools` / SSE `tool_calls`，answer 轮 `tool_choice:none`
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- MiniMax XML `<minimax:tool_call>` 作 fallback
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- Assistant 仅工具时 `content: null` + `tool_calls`（对齐 OpenCode/OpenAI Chat）
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## CTL tool language
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```text
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call <id> <name>
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arg <key> <nbytes>
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<raw bytes exactly nbytes>
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end
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```
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Execution happens only on confirmed `end` (`CTL_EV_CALL_READY`).
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## Starvation experiment
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```bash
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make check
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./scripts/replay_starvation.sh
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```
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CTL vs JSON-buffer 截断数字写入 [docs/eval_tool_cst.md](docs/eval_tool_cst.md) 实验 A；与 mini_calc e2e 一起作为 Tool-loop CST 附录素材（**不**替代 SD 主论文 Markdown→HTML 实验）。
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