fix: move gateway lock to temp dir

src/config/paths.ts

@@ -59,6 +59,17 @@ export const CONFIG_PATH_CLAWDBOT = resolveConfigPath();
 
 export const DEFAULT_GATEWAY_PORT = 18789;
 
+/**
+ * Gateway lock directory (ephemeral).
+ * Default: os.tmpdir()/clawdbot-<uid> (uid suffix when available).
+ */
+export function resolveGatewayLockDir(tmpdir: () => string = os.tmpdir): string {
+  const base = tmpdir();
+  const uid = typeof process.getuid === "function" ? process.getuid() : undefined;
+  const suffix = uid != null ? `clawdbot-${uid}` : "clawdbot";
+  return path.join(base, suffix);
+}
+
 const OAUTH_FILENAME = "oauth.json";
 
 /**