feat: expose agent session log location

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

@@ -5,6 +5,7 @@ import { join } from 'node:path'
 import { Context } from 'cordis'
 import LlmService from '@deepseek-ai/dsh-llm'
 import SessionStore, { type SessionEvent } from '@deepseek-ai/dsh-session'
+import SessionPersistenceJsonl from '@deepseek-ai/dsh-session-persistence-jsonl'
 import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
 import ToolRegistry, { defineTool } from '@deepseek-ai/dsh-tools'
 import AgentRegistry, { AgentId } from '@deepseek-ai/dsh-agent'
@@ -23,9 +24,12 @@ function hooks(d: string, h: unknown): string {
   writeFileSync(join(d, 'hooks.json'), JSON.stringify({ hooks: h })); return join(d, 'hooks.json')
 }
 
-async function harness(configPath: string, adapter: MockAdapter, opts: { stderrSummaryMaxChars?: number } = {}): Promise<Context> {
+type HarnessOpts = { stderrSummaryMaxChars?: number; sessionRoot?: string }
+async function harness(configPath: string, adapter: MockAdapter, opts: HarnessOpts = {}): Promise<Context> {
   const ctx = new Context()
-  await ctx.plugin(LlmService); await ctx.plugin(SessionStore); await ctx.plugin(SystemPrompt)
+  await ctx.plugin(LlmService); await ctx.plugin(SessionStore)
+  if (opts.sessionRoot !== undefined) await ctx.plugin(SessionPersistenceJsonl, { root: opts.sessionRoot })
+  await ctx.plugin(SystemPrompt)
   await ctx.plugin(ToolRegistry); await ctx.plugin(AgentRegistry); await ctx.plugin(AgentLoop, { agents: [] })
   await ctx.plugin(LocalBashExecutor, { timeoutMs: 10_000 })
   await ctx.plugin(HooksCodex, { configPath, model: 'm', ...opts })
@@ -47,6 +51,28 @@ async function waitFor(predicate: () => boolean, timeout = 5000, interval = 10):
 }
 
 describe('hooks-codex coverage — decision mapping paths', () => {
+  it('uses the persistence locator for transcript_path and null without one', async () => {
+    async function capture(sessionRoot?: string): Promise<{ payload: { transcript_path: string | null }; expected: string | undefined }> {
+      const d = dir()
+      const cap = join(d, 'payload')
+      const path = hooks(d, { PreToolUse: [{ hooks: [{ type: 'command', command: sh(d, 'capture.sh', `#!/usr/bin/env bash\ncat > "${cap}"\n`) }] }] })
+      const adapter = new MockAdapter([toolCallResponse('c1', 'echo', {}), textResponse('done')])
+      const ctx = await harness(path, adapter, { ...sessionRoot !== undefined ? { sessionRoot } : {} })
+      ctx.tools.register(defineTool({ name: 'echo', description: 'e', parameters: {}, async execute() { return [{ type: 'text', text: 'ok' }] } }))
+      const agent = ctx.agentLoop.create(AgentId('transcript'), { model: 'mock' })
+      agent.send([{ type: 'text', text: 'go' }])
+      await waitForIdle(ctx, agent)
+      return {
+        payload: JSON.parse(readFileSync(cap, 'utf8')) as { transcript_path: string | null },
+        expected: ctx.get('sessionPersistence')?.locate(agent.session.header)?.path,
+      }
+    }
+
+    const located = await capture(dir())
+    expect(located.payload.transcript_path).toBe(located.expected)
+    expect((await capture()).payload.transcript_path).toBeNull()
+  })
+
   it('UserPromptSubmit block (exit 2) → rejected turn; default reason on empty stderr', async () => {
     const d = dir()
     hooks(d, { UserPromptSubmit: [{ hooks: [{ type: 'command', command: sh(d, 'b.sh', '#!/usr/bin/env bash\nexit 2\n') }] }] })