feat(pwsh): add the pwsh-local executor and the pwsh tool

Windows-native execution foundation: PwshLocalExecutor implements the bash
executor seam over ctx.subprocess (pwsh -NoLogo -NoProfile -NonInteractive
-Command, one argv element, no quoting layer; resolvePwshPath probes
PowerShell 7 / PATH / Windows PowerShell 5.1 as a pure function), and
tool-pwsh is the minimal PowerShell-dialect model-facing tool over ctx.bash
(foreground only, managed DSH_* env, timeout/signal/exit markers, terminal
and generic presenters). Both packages carry full suites (real pwsh,
self-skipping without it) at per-file 100% coverage; vitest's Windows
exclusion narrows from packages/bash/* to the bash-requiring packages so the
pwsh suites run natively on Windows too. The CLI gains the workspace deps
and tsconfig projects without mounting either plugin; the Windows-default
roadmap is recorded as a proposed Agent Note.

scripts/gen-tool-catalog.ts

@@ -17,6 +17,7 @@ import GoalService from '@deepseek-ai/dsh-goal'
 import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
 import ToolRegistry, { type Config as ToolsConfig } from '@deepseek-ai/dsh-tools'
 import LocalBashExecutor from '@deepseek-ai/dsh-bash-local'
+import { PwshLocalExecutor } from '@deepseek-ai/dsh-pwsh-local'
 import LocalSubprocessService from '@deepseek-ai/dsh-subprocess-local'
 import LocalFileSystem from '@deepseek-ai/dsh-fs-local'
 import UserInteractionService from '@deepseek-ai/dsh-user-interaction'
@@ -31,6 +32,7 @@ import * as SkillLocal from '@deepseek-ai/dsh-skill-local'
 import LocalTaskService from '@deepseek-ai/dsh-tasks-local'
 import * as ToolAskUser from '@deepseek-ai/dsh-tool-ask-user'
 import * as ToolBash from '@deepseek-ai/dsh-tool-bash'
+import * as ToolPwsh from '@deepseek-ai/dsh-tool-pwsh'
 import * as ToolBashPersistent from '@deepseek-ai/dsh-tool-bash-persistent'
 import * as ToolCordis from '@deepseek-ai/dsh-tool-cordis'
 import * as ToolFs from '@deepseek-ai/dsh-tool-fs'
@@ -167,6 +169,23 @@ const TOOL_PACKAGES: ToolPackage[] = [
     note:
       'The bash tool is the model-facing consumer of the bash executor seam. A `run_in_background` run registers with the generic `ctx.tasks` runtime and is collected/stopped through the `task_*` tools from `@deepseek-ai/dsh-tool-tasks`; the `enableRunInBackground` config (default true) removes the parameter entirely when disabled.',
   },
+  {
+    pkg: '@deepseek-ai/dsh-tool-pwsh',
+    dir: 'tool-pwsh',
+    source: 'packages/bash/tool-pwsh/src/index.ts',
+    requires: ['ctx.tools', 'ctx.bash', 'ctx.systemPrompt'],
+    writes: ['tool/call', 'tool/result'],
+    async mount(ctx) {
+      // The pwsh tool consumes the bash executor seam; the schema harvest
+      // mounts the pwsh-local implementation so the inject resolves without
+      // executing anything (registration never spawns a process).
+      await ctx.plugin(LocalSubprocessService)
+      await ctx.plugin(PwshLocalExecutor)
+      await ctx.plugin(ToolPwsh)
+    },
+    note:
+      'The pwsh tool is the PowerShell-dialect consumer of the bash executor seam for Windows compositions (a PowerShell executor such as `@deepseek-ai/dsh-pwsh-local` backs `ctx.bash`); minimal by design — foreground only, no sandbox escalation, native `C:\\...` paths and `$env:NAME` variables.',
+  },
   {
     pkg: '@deepseek-ai/dsh-tool-cordis',
     dir: 'tool-cordis',

scripts/verify-package-readme-model-experience.ts

@@ -43,6 +43,7 @@ const NO_MODEL_EXPERIENCE_SECTION: Readonly<Record<string, string>> = {
 const SENTENCE_MODEL_EXPERIENCE: Readonly<Record<string, SentenceContract>> = {
   'packages/bash/bash': { kind: 'indirect', reason: 'The service interface delegates all model rendering to dsh-tool-bash.' },
   'packages/bash/bash-local': { kind: 'indirect', reason: 'The executor backend delegates model rendering to dsh-tool-bash.' },
+  'packages/bash/pwsh-local': { kind: 'indirect', reason: 'The executor backend delegates model rendering to dsh-tool-pwsh.' },
   'packages/code-runtime/code-runtime': { kind: 'indirect', reason: 'The service interface delegates model rendering to Code Mode in dsh-tools.' },
   'packages/code-runtime/code-runtime-worker': { kind: 'indirect', reason: 'The worker backend delegates model rendering to Code Mode in dsh-tools.' },
   'packages/typert/registry': { kind: 'none', reason: 'Runtime type registry; consumers (cordis_inspect, wire faces, gates) own any model-visible projection of registry contents.' },