Fix pixel office agent discovery fallback

app/api/agent-activity/route.ts

@@ -40,6 +40,30 @@ export interface AgentActivity {
   subagents?: SubagentInfo[]
 }
 
+type AgentConfigEntry = {
+  id: string
+  name?: string
+  emoji?: string
+  identity?: { emoji?: string }
+}
+
+async function loadAgentList(config: any, agentsDir: string): Promise<AgentConfigEntry[]> {
+  const configured = Array.isArray(config?.agents?.list)
+    ? config.agents.list.filter((agent: any) => agent && typeof agent.id === 'string' && agent.id)
+    : []
+  if (configured.length > 0) return configured
+
+  try {
+    if (!existsSync(agentsDir)) return []
+    const dirs = await fs.readdir(agentsDir, { withFileTypes: true })
+    return dirs
+      .filter((entry) => entry.isDirectory() && !entry.name.startsWith('.'))
+      .map((entry) => ({ id: entry.name }))
+  } catch {
+    return []
+  }
+}
+
 function isSubtaskDescription(desc: string): boolean {
   const d = desc.toLowerCase()
   return desc.startsWith('Subtask:') || desc.startsWith('子任务') || d.includes('subtask')
@@ -494,8 +518,8 @@ export async function GET() {
       const configContent = await fs.readFile(configPath, 'utf8')
       const config = parseJsonText(configContent)
 
-      const agentList = Array.isArray(config.agents) ? config.agents : config.agents?.list
-      if (agentList && Array.isArray(agentList)) {
+      const agentList = await loadAgentList(config, agentsDir)
+      if (agentList.length > 0) {
         const now = Date.now()
 
         for (const agent of agentList) {