refactor(cli): parse dsh argv through one Commander adapter

Replace the dsh CLI's three hand-rolled parsing idioms (raw argv[0]/includes dispatch in bin.ts, per-mode node:util parseArgs in headless.ts/web.ts, and the bespoke parseResumeArg scanner in dsh-app-boot) with a single Commander adapter in apps/cli/src/args.ts. parseDshArgs resolves argv into a discriminated DshInvocation union; bin.ts switches on the mode and dynamic-imports the chosen module, which now consumes already-parsed values. - web is a real subcommand; --host uses choices and --port an argParser range check, moving validation into the parser. - --resume rejects empty and repeated forms; --prompt rejects empty; a config positional after --prompt and a root flag placed before web fail loud. - adds --help/--version; removes parseResumeArg from dsh-app-boot. - new apps/cli/tests/args.spec.ts (apps/*/tests added to vitest include, apps/cli/tests to tsconfig.host.json); the tui-agent keyless PTY smoke covers bin.ts dispatch end to end unchanged.
2026-07-24 19:43:59 +08:00
parent 7c0c516f60
commit 800bafda3b
17 changed files with 460 additions and 130 deletions
--- a/.agents/notes/implemented/architecture/2026-07-24-dsh-commander-argument-adapter.i18n.yaml
+++ b/.agents/notes/implemented/architecture/2026-07-24-dsh-commander-argument-adapter.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write
+2026-07-24-dsh-commander-argument-adapter.md: dc2830273b245d370feba0df6ed030045b8444ff
+2026-07-24-dsh-commander-argument-adapter.zh.md: ea37a1260ebf81e787f02301bc6fc3c9438c4f75
--- a/.agents/notes/implemented/architecture/2026-07-24-dsh-commander-argument-adapter.md
+++ b/.agents/notes/implemented/architecture/2026-07-24-dsh-commander-argument-adapter.md
@@ -0,0 +1,37 @@
+# Agent Note: Parse `dsh` argv through one Commander adapter
+
+Status: implemented
+
+English | [中文](2026-07-24-dsh-commander-argument-adapter.zh.md)
+
+## Problem
+
+The `dsh` CLI entry (`apps/cli`) parsed argv in three hand-rolled idioms that did not compose and gave no `--help`/`--version`. `bin.ts` dispatched by raw inspection — `argv[0] === 'web'`, then `argv.includes('-p') || argv.includes('--prompt')`, else TUI — which is positional-blind: a prompt flag or a config path in the wrong position could misroute the mode, and `argv.includes('-p')` could not tell a real flag from an incidental token. `headless.ts` and `web.ts` each ran their own `node:util` `parseArgs` with inline host/port validation, and `dsh-app-boot` carried `parseResumeArg`, a ~30-line bespoke scanner reimplementing flag/`=`-form/value/repeat handling for `--resume`. Usage was a single hardcoded `usage: dsh -p "task"` line; there was no version flag and no rendered help.
+
+## Decision
+
+Argv is parsed once, in `apps/cli/src/args.ts`, through a Commander adapter (the same parser the SDK bins — `create-sdk`, `dsh-scripts` — already standardize on). `parseDshArgs(argv, version)` resolves the invocation into a discriminated `DshInvocation` union: `{ mode: 'tui', config?, resume? }`, `{ mode: 'headless', prompt }`, `{ mode: 'web', host, port }`, `{ mode: 'help' | 'version', text }`, or `{ mode: 'error', message }`. Commander runs under `exitOverride()` with output captured, so it never writes or exits on its own — `--help`, `--version`, and every parse error come back as data.
+
+`bin.ts` calls the adapter once and switches on `mode` (closed union, `satisfies never` default), dynamic-importing only the chosen mode's module. Each mode module now consumes already-parsed values: `runTui(config, resume)`, `runHeadless(task)`, `runWeb(host, port)` — none re-reads argv. `web` is a real `program.command('web')` subcommand; `--host` is a Commander `.choices([LOOPBACK_HOST, ALL_INTERFACES_HOST])` and `--port` an `argParser` that range-checks 0–65535, moving both from the inline `runWeb` checks into the parser. `--resume` uses an `argParser` that rejects both an empty id (`--resume=`) and a repeated flag (`--resume a --resume b`), and `--prompt` rejects an empty task, preserving the old "never silently start fresh" invariant (the deleted `parseResumeArg` failed loud on the same cases). The program sets `enablePositionalOptions()`, and the `web` action rejects a root `--prompt`/`--resume` placed before it, so a misplaced flag (`dsh web -p x`, `dsh -p x web`) fails loud instead of silently serving with defaults. `--version` reads this app's `package.json`.
+
+`parseResumeArg` is deleted from `dsh-app-boot` (its export, its README row, and its unit block); the pre-release stance permits the removal. `dsh-app-boot` keeps its boot/env/config/personal-overlay helpers — only the argv scanner leaves.
+
+## Package topology
+
+The argument surface stays inside `apps/cli`, the assembly tier, not a `packages/*` library: it is this one app's routing, not a reusable seam. `dsh-app-boot` shrinks to boot glue with no CLI-parsing responsibility. `commander@^15` is added to `apps/cli/package.json`, matching the SDK bins' pin.
+
+## Alternatives considered
+
+**Keep `node:util` `parseArgs` and only unify the dispatch** — rejected: `parseArgs` has no subcommand model, no rendered help, and no version flag, so `web` routing and `--help`/`--version` would stay hand-rolled. The repo already chose Commander for its other CLIs; a second parser idiom for `dsh` alone is the fragmentation this change removes.
+
+**Keep `parseResumeArg` as a shared helper and feed it Commander's residual args** — rejected: the whole point is to retire the bespoke scanner. Commander parses `--resume` (space and `=` forms, missing-value, position-independence) natively; keeping a parallel hand-written path for the one flag would preserve the duplication the change exists to end.
+
+**Make the argument surface a `packages/*` seam** — rejected: nothing outside `dsh` consumes it, and capability seams are not split preemptively. The Commander adapter is `apps/cli`'s own concern.
+
+## Testing
+
+`apps/cli/tests/args.spec.ts` (new; `apps/*/tests` added to the vitest include and `apps/cli/tests` to `tsconfig.host.json`) drives the adapter directly: TUI defaults, config positional, `--resume` space/inline forms and their position-independence, empty/valueless/repeated `--resume` rejection, `-p`/`--prompt` routing with empty-prompt and stray-positional rejection, `web` host/port defaults and validation with `--host`/`--port` diagnostics, root flags misplaced around `web` failing loud, excess-argument rejection, and `--help`/`web --help`/`--version`/unknown-option outcomes. The `dsh CLI keyless smoke` group in `examples/tui-agent/tests/tui-keyless-smoke.e2e.ts` exercises the real `bin.ts` dispatch end to end through a PTY (default boot, personal overlay, invalid config, `--resume` failure, source-path prompt) and stays green unchanged. `packages/ui/app-boot/tests/app-boot.spec.ts` drops its `parseResumeArg` block.
+
+## Consequences
+
+`dsh` gains rendered `--help`/`--version` and consistent fail-loud parse errors, and mode routing no longer depends on flag position. Argv parsing lives in one place with one parser idiom shared with the SDK bins, at the cost of a `commander` dependency on `apps/cli` and Commander's parse semantics (its error strings, its `exitOverride` contract) now sitting on the CLI's front door. `dsh-app-boot` no longer owns any CLI-parsing surface; a future consumer needing `--resume`-style parsing composes Commander rather than reviving the deleted scanner.
--- a/.agents/notes/implemented/architecture/2026-07-24-dsh-commander-argument-adapter.zh.md
+++ b/.agents/notes/implemented/architecture/2026-07-24-dsh-commander-argument-adapter.zh.md
@@ -0,0 +1,37 @@
+# Agent Note: 通过单个 Commander 适配器解析 `dsh` 的 argv
+
+Status: implemented
+
+[English](2026-07-24-dsh-commander-argument-adapter.md) | 中文
+
+## 问题
+
+`dsh` 的 CLI（命令行界面）入口（`apps/cli`）以三种手写方式解析 argv，这些方式无法组合，也不提供 `--help`/`--version`。`bin.ts` 通过原始检查进行分发：先判断 `argv[0] === 'web'`，再判断 `argv.includes('-p') || argv.includes('--prompt')`，否则走 TUI。这种方式对位置不敏感：位置错误的 prompt 标志或配置路径可能把模式路由错，而 `argv.includes('-p')` 无法区分真正的标志和偶然出现的 token。`headless.ts` 和 `web.ts` 各自运行自己的 `node:util` `parseArgs`，并内联校验 host/port，而 `dsh-app-boot` 携带 `parseResumeArg`——一个约 30 行的定制扫描器，为 `--resume` 重新实现了标志、`=` 形式、取值和重复的处理。用法说明只有一行硬编码的 `usage: dsh -p "task"`；既没有版本标志，也没有渲染出的帮助信息。
+
+## 决策
+
+argv 只在 `apps/cli/src/args.ts` 中解析一次，通过一个 Commander 适配器（即 SDK bin，如 `create-sdk`、`dsh-scripts`，已经统一采用的那个解析器）。`parseDshArgs(argv, version)` 将调用解析为一个判别式 `DshInvocation` 联合类型：`{ mode: 'tui', config?, resume? }`、`{ mode: 'headless', prompt }`、`{ mode: 'web', host, port }`、`{ mode: 'help' | 'version', text }` 或 `{ mode: 'error', message }`。Commander 在 `exitOverride()` 下运行并捕获输出，因此它自身从不写出或退出：`--help`、`--version` 和每个解析错误都以数据形式返回。
+
+`bin.ts` 调用一次适配器，并对 `mode` 做分支切换（封闭联合类型，默认分支为 `satisfies never`），只动态导入所选模式对应的模块。每个模式模块现在只消费已解析好的值：`runTui(config, resume)`、`runHeadless(task)`、`runWeb(host, port)`，都不会再次读取 argv。`web` 是一个真正的 `program.command('web')` 子命令；`--host` 是 Commander 的 `.choices([LOOPBACK_HOST, ALL_INTERFACES_HOST])`，`--port` 是一个对 0–65535 做范围检查的 `argParser`，二者都从内联的 `runWeb` 检查移入了解析器。`--resume` 使用一个 `argParser`，同时拒绝空 id（`--resume=`）和重复出现的标志（`--resume a --resume b`），`--prompt` 则拒绝空任务，保留旧有的「绝不静默重新开始」不变式（已删除的 `parseResumeArg` 在相同情形下也会显式报错）。程序设置了 `enablePositionalOptions()`，且 `web` 动作会拒绝置于其前的根级 `--prompt`/`--resume`，因此位置错误的标志（`dsh web -p x`、`dsh -p x web`）会显式报错，而不会静默地以默认值提供服务。`--version` 读取本应用的 `package.json`。
+
+`parseResumeArg` 从 `dsh-app-boot` 中删除（包括其导出、README 中的对应行以及单元测试块）；预发布阶段的立场允许这次删除。`dsh-app-boot` 保留其 boot/env/config/个人覆盖辅助函数，只有 argv 扫描器被移除。
+
+## 包拓扑
+
+参数解析留在 `apps/cli`（组装层）内，而不是 `packages/*` 库中：它是这一个应用自身的路由，而非可复用的 seam。`dsh-app-boot` 收缩为纯粹的 boot 胶水代码，不再承担 CLI 解析职责。`commander@^15` 被加入 `apps/cli/package.json`，与 SDK bin 锁定的版本一致。
+
+## 考虑过的替代方案
+
+**保留 `node:util` `parseArgs`，只统一分发。** 已否决：`parseArgs` 没有子命令模型、没有渲染出的帮助、也没有版本标志，因此 `web` 路由和 `--help`/`--version` 仍将保持手写。本仓库其他 CLI 已经选择了 Commander；单独为 `dsh` 引入第二套解析器方式，正是这次变更要消除的碎片化。
+
+**保留 `parseResumeArg` 作为共享辅助函数，并向它喂入 Commander 的残余参数。** 已否决：整件事的核心就是要退役这个定制扫描器。Commander 原生解析 `--resume`（空格和 `=` 形式、缺值、位置无关性）；为这一个标志保留一条平行的手写路径，只会保留这次变更要终结的重复。
+
+**把参数解析做成 `packages/*` 的 seam。** 已否决：`dsh` 之外没有任何消费方使用它，而能力 seam 不应被提前拆分。这个 Commander 适配器是 `apps/cli` 自身的事务。
+
+## 测试
+
+`apps/cli/tests/args.spec.ts`（新增；`apps/*/tests` 加入 vitest include，`apps/cli/tests` 加入 `tsconfig.host.json`）直接驱动适配器：TUI 默认值、config 位置参数、`--resume` 的空格/内联形式及其位置无关性、对空值/无值/重复 `--resume` 的拒绝、`-p`/`--prompt` 路由及对空 prompt 和游离位置参数的拒绝、`web` 的 host/port 默认值与校验（含 `--host`/`--port` 诊断信息）、围绕 `web` 位置错误的根级标志会显式报错、对多余参数的拒绝，以及 `--help`/`web --help`/`--version`/未知选项的处理结果。`examples/tui-agent/tests/tui-keyless-smoke.e2e.ts` 中的 `dsh CLI keyless smoke` 组通过 PTY 端到端地运行真实的 `bin.ts` 分发（默认启动、个人覆盖、无效配置、`--resume` 失败、源路径 prompt），且保持绿色不变。`packages/ui/app-boot/tests/app-boot.spec.ts` 移除其 `parseResumeArg` 测试块。
+
+## 影响
+
+`dsh` 获得了渲染出的 `--help`/`--version` 以及一致的显式报错式解析错误，模式路由也不再依赖标志位置。argv 解析集中在一处，并与 SDK bin 共用一套解析器方式，代价是 `apps/cli` 新增一项 `commander` 依赖，且 Commander 的解析语义（它的错误字符串、它的 `exitOverride` 契约）如今落在 CLI 的入口处。`dsh-app-boot` 不再拥有任何 CLI 解析职责；未来需要 `--resume` 式解析的消费方应组合 Commander，而不是复活已删除的扫描器。