refactor: replace agent_list polling with request/response RPC pattern

packages/cli/src/commands/agent/stop.ts

@@ -1,5 +1,5 @@
 import type { Command } from 'commander'
-import { connectToDaemon, getDaemonHost, resolveAgentId } from '../../utils/client.js'
+import { connectToDaemon, getDaemonHost } from '../../utils/client.js'
 import type { CommandOptions, SingleResult, OutputSchema, CommandError } from '../../output/index.js'
 
 /** Result type for agent stop command */
@@ -53,13 +53,7 @@ export async function runStopCommand(
   }
 
   try {
-    // Request agent list
-    client.requestAgentList()
-
-    // Wait a moment for the agent list to be populated
-    await new Promise((resolve) => setTimeout(resolve, 500))
-
-    let agents = client.listAgents()
+    let agents = await client.fetchAgents()
     const stoppedIds: string[] = []
 
     if (options.all) {
@@ -76,8 +70,8 @@ export async function runStopCommand(
       })
     } else if (id) {
       // Stop specific agent
-      const resolvedId = resolveAgentId(id, agents)
-      if (!resolvedId) {
+      const agent = await client.fetchAgent(id)
+      if (!agent) {
         const error: CommandError = {
           code: 'AGENT_NOT_FOUND',
           message: `No agent found matching: ${id}`,
@@ -85,7 +79,7 @@ export async function runStopCommand(
         }
         throw error
       }
-      agents = agents.filter((a) => a.id === resolvedId)
+      agents = [agent]
     }
 
     // Stop each agent