fix: auto-enable plugins on startup

src/gateway/server.impl.ts

@@ -13,6 +13,7 @@ import {
   readConfigFileSnapshot,
   writeConfigFile,
 } from "../config/config.js";
+import { applyPluginAutoEnable } from "../config/plugin-auto-enable.js";
 import { clearAgentRunContext, onAgentEvent } from "../infra/agent-events.js";
 import { onHeartbeatEvent } from "../infra/heartbeat-events.js";
 import { startHeartbeatRunner } from "../infra/heartbeat-runner.js";
@@ -182,6 +183,20 @@ export async function startGatewayServer(
     );
   }
 
+  const autoEnable = applyPluginAutoEnable({ config: configSnapshot.config, env: process.env });
+  if (autoEnable.changes.length > 0) {
+    try {
+      await writeConfigFile(autoEnable.config);
+      log.info(
+        `gateway: auto-enabled plugins:\n${autoEnable.changes
+          .map((entry) => `- ${entry}`)
+          .join("\n")}`,
+      );
+    } catch (err) {
+      log.warn(`gateway: failed to persist plugin auto-enable changes: ${String(err)}`);
+    }
+  }
+
   const cfgAtStart = loadConfig();
   setGatewaySigusr1RestartPolicy({ allowExternal: cfgAtStart.commands?.restart === true });
   initSubagentRegistry();