fix: use runtime API for version and agent list instead of subprocess

Use api.runtime.version for openclaw version and
api.runtime.config.loadConfig() for agent list. Eliminates the
periodic openclaw agents list subprocess that caused high CPU usage.

plugin/core/openclaw-agents.ts

@@ -1,8 +1,3 @@
-import { execFile } from 'child_process';
-import { promisify } from 'util';
-
-const execFileAsync = promisify(execFile);
-
 export interface OpenClawAgentInfo {
   name: string;
   isDefault?: boolean;
@@ -14,70 +9,38 @@ export interface OpenClawAgentInfo {
   routing?: string;
 }
 
-export async function listOpenClawAgents(logger?: { debug?: (...args: any[]) => void; warn?: (...args: any[]) => void }): Promise<OpenClawAgentInfo[]> {
-  try {
-    const { stdout } = await execFileAsync('openclaw', ['agents', 'list'], {
-      timeout: 30000,
-      maxBuffer: 1024 * 1024,
-    });
-    return parseOpenClawAgents(stdout);
-  } catch (err) {
-    logger?.warn?.('Failed to run `openclaw agents list`', err);
-    return [];
-  }
+export async function listOpenClawAgents(_logger?: { debug?: (...args: any[]) => void; warn?: (...args: any[]) => void }): Promise<OpenClawAgentInfo[]> {
+  return [];
 }
 
 export function parseOpenClawAgents(text: string): OpenClawAgentInfo[] {
   const lines = text.split(/\r?\n/);
   const out: OpenClawAgentInfo[] = [];
   let current: OpenClawAgentInfo | null = null;
-
-  const push = () => {
-    if (current) out.push(current);
-    current = null;
-  };
-
+  const push = () => { if (current) out.push(current); current = null; };
   for (const raw of lines) {
     const line = raw.trimEnd();
-    if (!line.trim() || line.startsWith('Agents:') || line.startsWith('Routing rules map') || line.startsWith('Channel status reflects')) continue;
-    if (line.startsWith('- ')) {
+    if (!line.trim() || line.startsWith("Agents:") || line.startsWith("Routing rules map") || line.startsWith("Channel status reflects")) continue;
+    if (line.startsWith("- ")) {
       push();
       const m = line.match(/^-\s+(.+?)(?:\s+\((default)\))?$/);
-      current = {
-        name: m?.[1] || line.slice(2).trim(),
-        isDefault: m?.[2] === 'default',
-      };
+      current = { name: m?.[1] || line.slice(2).trim(), isDefault: m?.[2] === "default" };
       continue;
     }
     if (!current) continue;
     const trimmed = line.trim();
-    const idx = trimmed.indexOf(':');
+    const idx = trimmed.indexOf(":");
     if (idx === -1) continue;
     const key = trimmed.slice(0, idx).trim();
     const value = trimmed.slice(idx + 1).trim();
     switch (key) {
-      case 'Identity':
-        current.identity = value;
-        break;
-      case 'Workspace':
-        current.workspace = value;
-        break;
-      case 'Agent dir':
-        current.agentDir = value;
-        break;
-      case 'Model':
-        current.model = value;
-        break;
-      case 'Routing rules': {
-        const n = Number(value);
-        current.routingRules = Number.isFinite(n) ? n : undefined;
-        break;
-      }
-      case 'Routing':
-        current.routing = value;
-        break;
-      default:
-        break;
+      case "Identity": current.identity = value; break;
+      case "Workspace": current.workspace = value; break;
+      case "Agent dir": current.agentDir = value; break;
+      case "Model": current.model = value; break;
+      case "Routing rules": { const n = Number(value); current.routingRules = Number.isFinite(n) ? n : undefined; break; }
+      case "Routing": current.routing = value; break;
+      default: break;
     }
   }
   push();

plugin/index.ts

@@ -14,7 +14,7 @@
 import { hostname, freemem, totalmem, uptime, loadavg, platform } from 'os';
 import { getPluginConfig } from './core/config';
 import { MonitorBridgeClient, type OpenClawMeta } from './core/monitor-bridge';
-import { listOpenClawAgents } from './core/openclaw-agents';
+import type { OpenClawAgentInfo } from './core/openclaw-agents';
 import { registerGatewayStartHook } from './hooks/gateway-start';
 import { registerGatewayStopHook } from './hooks/gateway-stop';
 import {
@@ -32,6 +32,12 @@ interface PluginAPI {
     warn: (...args: any[]) => void;
   };
   version?: string;
+  runtime?: {
+    version?: string;
+    config?: {
+      loadConfig?: () => any;
+    };
+  };
   config?: Record<string, unknown>;
   pluginConfig?: Record<string, unknown>;
   on: (event: string, handler: () => void) => void;
@@ -96,7 +102,7 @@ export default {
           avg15: load[2],
         },
         openclaw: {
-          version: process.env.OPENCLAW_SERVICE_VERSION || api.version || 'unknown',
+          version: api.runtime?.version || api.version || 'unknown',
           pluginVersion: '0.3.1', // Bumped for PLG-CAL-004
         },
         timestamp: new Date().toISOString(),
@@ -118,10 +124,21 @@ export default {
       const bridgeClient = getBridgeClient();
       if (!bridgeClient) return;
 
+      let agentNames: string[] = [];
+      try {
+        const cfg = api.runtime?.config?.loadConfig?.();
+        const agentsList = cfg?.agents?.list;
+        if (Array.isArray(agentsList)) {
+          agentNames = agentsList
+            .map((a: any) => typeof a === 'string' ? a : a?.name)
+            .filter(Boolean);
+        }
+      } catch { /* non-fatal */ }
+
       const meta: OpenClawMeta = {
-        version: process.env.OPENCLAW_SERVICE_VERSION || api.version || 'unknown',
+        version: api.runtime?.version || api.version || 'unknown',
         plugin_version: '0.3.1',
-        agents: await listOpenClawAgents(logger),
+        agents: agentNames.map(name => ({ name })),
       };
 
       const ok = await bridgeClient.pushOpenClawMeta(meta);