refactor(subprocess): rename the process seam to subprocess and address review

Review feedback (tianyicui): 'process' is a poor service name. The family is
now packages/subprocess/ — @deepseek-ai/dsh-subprocess (ctx.subprocess,
abstract SubprocessService, Subprocess* vocabulary) and
@deepseek-ai/dsh-subprocess-local (LocalSubprocessService) — renamed
throughout code, compositions, docs (en+zh, pairs re-recorded), catalogs,
and gates. 'subprocess' is the precise term for managed OS children (the
Python-stdlib sense), avoids colliding with Node's global process object,
and reads as one system beside dsh-subagent-subprocess.

ds-review-bot findings addressed:
- kill() on a settled handle is now a no-op (no signal to a possibly-reused
  pgid, no referenced grace timer delaying exit); pinned by a spy test.
- The moved DshEnvironmentKey/DshEnvironment/CollectedOutput types get
  drift-checked type-equiv blocks on the new subprocess.md page, restoring
  their manifest registration.
- subprocess.md is registered in the core.md sub-page index (en+zh).

packages/hooks/hooks-codex/package.json

@@ -45,7 +45,7 @@
     "@deepseek-ai/dsh-agent-loop-testkit": "workspace:^",
     "@deepseek-ai/dsh-bash": "workspace:^",
     "@deepseek-ai/dsh-bash-local": "workspace:^",
-    "@deepseek-ai/dsh-process-local": "workspace:^",
+    "@deepseek-ai/dsh-subprocess-local": "workspace:^",
     "@deepseek-ai/dsh-hook-protocol": "workspace:^",
     "@deepseek-ai/dsh-invariants": "workspace:^",
     "@deepseek-ai/dsh-llm": "workspace:^",

packages/hooks/hooks-codex/tests/bridge.spec.ts

@@ -10,7 +10,7 @@ import type { Agent } from '@deepseek-ai/dsh-agent'
 import AgentLoop from '@deepseek-ai/dsh-agent-loop'
 import { mountAgentLoopTestDependencies } from '@deepseek-ai/dsh-agent-loop-testkit'
 import { LocalBashExecutor } from '@deepseek-ai/dsh-bash-local'
-import LocalProcessManager from '@deepseek-ai/dsh-process-local'
+import LocalSubprocessService from '@deepseek-ai/dsh-subprocess-local'
 import * as HooksCodex from '@deepseek-ai/dsh-hooks-codex'
 import { MockAdapter, textResponse, toolCallResponse } from '../../../core/agent-loop/tests/mock-adapter.ts'
 
@@ -42,7 +42,7 @@ async function harness(dir: string, adapter: MockAdapter): Promise<Context> {
   const ctx = new Context()
   await mountAgentLoopTestDependencies(ctx)
   await ctx.plugin(AgentLoop, { agents: [] })
-  await ctx.plugin(LocalProcessManager)
+  await ctx.plugin(LocalSubprocessService)
   await ctx.plugin(LocalBashExecutor, { timeoutMs: 10_000 })
   await ctx.plugin(HooksCodex, { configPath: join(dir, 'hooks.json'), model: 'test-model' })
   ctx.llm.registerAdapter(['mock'], adapter)
@@ -166,7 +166,7 @@ describe('hooks-codex bridge', () => {
     const ctx = new Context()
     await mountAgentLoopTestDependencies(ctx)
     await ctx.plugin(AgentLoop, { agents: [] })
-    await ctx.plugin(LocalProcessManager)
+    await ctx.plugin(LocalSubprocessService)
     await ctx.plugin(LocalBashExecutor, { timeoutMs: 10_000 })
     const fiber = await ctx.plugin(HooksCodex, { configPath: join(dir, 'hooks.json'), model: 'm' })
     await fiber.dispose()
@@ -189,7 +189,7 @@ describe('hooks-codex bridge', () => {
     const ctx = new Context()
     await mountAgentLoopTestDependencies(ctx)
     await ctx.plugin(AgentLoop, { agents: [] })
-    await ctx.plugin(LocalProcessManager)
+    await ctx.plugin(LocalSubprocessService)
     await ctx.plugin(LocalBashExecutor, { timeoutMs: 10_000 })
     const fiber = await ctx.plugin(HooksCodex, { configPath: join(dir, 'hooks.json'), model: 'm' })
     ctx.llm.registerAdapter(['mock'], new MockAdapter([]))

packages/hooks/hooks-codex/tests/coverage-cases.ts

@@ -10,7 +10,7 @@ import type { Agent } from '@deepseek-ai/dsh-agent'
 import AgentLoop from '@deepseek-ai/dsh-agent-loop'
 import { mountAgentLoopTestDependencies } from '@deepseek-ai/dsh-agent-loop-testkit'
 import { LocalBashExecutor } from '@deepseek-ai/dsh-bash-local'
-import LocalProcessManager from '@deepseek-ai/dsh-process-local'
+import LocalSubprocessService from '@deepseek-ai/dsh-subprocess-local'
 import * as HooksCodex from '@deepseek-ai/dsh-hooks-codex'
 import { MockAdapter, textResponse, toolCallResponse } from '../../../core/agent-loop/tests/mock-adapter.ts'
 
@@ -32,7 +32,7 @@ async function harness(configPath: string, adapter: MockAdapter, opts: HarnessOp
   await mountAgentLoopTestDependencies(ctx)
   if (opts.sessionRoot !== undefined) await ctx.plugin(SessionPersistenceJsonl, { root: opts.sessionRoot })
   await ctx.plugin(AgentLoop, { agents: [] })
-  await ctx.plugin(LocalProcessManager)
+  await ctx.plugin(LocalSubprocessService)
   await ctx.plugin(LocalBashExecutor, { timeoutMs: 10_000 })
   await ctx.plugin(HooksCodex, { configPath, model: 'm', ...opts })
   ctx.llm.registerAdapter(['mock'], adapter)
@@ -312,7 +312,7 @@ export function defineCoverageCases(groups: CoverageGroup | readonly CoverageGro
       const ctx = new Context()
       await mountAgentLoopTestDependencies(ctx)
       await ctx.plugin(AgentLoop, { agents: [] })
-      await ctx.plugin(LocalProcessManager)
+      await ctx.plugin(LocalSubprocessService)
       await ctx.plugin(LocalBashExecutor, { timeoutMs: 10_000 })
       ctx.logger.warn = warn as never
       // Direct apply (schema bypass) → the `model ?? ''` fallback is exercised.
@@ -622,7 +622,7 @@ export function defineCoverageCases(groups: CoverageGroup | readonly CoverageGro
       const ctx = new Context()
       await mountAgentLoopTestDependencies(ctx)
       await ctx.plugin(AgentLoop, { agents: [] })
-      await ctx.plugin(LocalProcessManager)
+      await ctx.plugin(LocalSubprocessService)
       await ctx.plugin(LocalBashExecutor, { timeoutMs: 10_000, cwd: serverDir })
       await ctx.plugin(HooksCodex, { configPath: join(serverDir, 'hooks.json'), model: 'm' })
       ctx.llm.registerAdapter(['mock'], adapter)