fix(scope): align merged agent event contracts

packages/skill/tool-skill/tests/tool-skill.spec.ts

@@ -6,6 +6,7 @@ import { Context } from 'cordis'
 import { CallId, type Message } from '@deepseek-ai/dsh-llm'
 import SystemPrompt, { renderPrompt } from '@deepseek-ai/dsh-system-prompt'
 import ToolRegistry from '@deepseek-ai/dsh-tools'
+import { agentEvents, type Agent } from '@deepseek-ai/dsh-agent'
 import SkillService from '@deepseek-ai/dsh-skill'
 import * as SkillLocal from '@deepseek-ai/dsh-skill-local'
 import * as toolSkill from '@deepseek-ai/dsh-tool-skill'
@@ -30,14 +31,15 @@ async function setup(home: string, config: toolSkill.Config = {}): Promise<Conte
   return ctx
 }
 
-function agentForCwd(cwd: string): never {
-  return { session: { header: { cwd } } } as never
+function agentForCwd(cwd: string): Agent {
+  return { session: { header: { cwd } } } as unknown as Agent
 }
 
 async function composePrefix(ctx: Context, cwd: string, signal = new AbortController().signal): Promise<Message[]> {
+  const agent = agentForCwd(cwd)
   const empty: Message[] = []
-  return await ctx.waterfall(
-    'agent/session-prefix', agentForCwd(cwd), empty, signal,
+  return await agentEvents(ctx, agent).waterfall(
+    'agent/session-prefix', empty, signal,
     () => Promise.resolve(empty),
   )
 }