Refactor clawx (#344)

Co-authored-by: ashione <skyzlxuan@gmail.com>

electron/gateway/startup-stderr.ts

@@ -0,0 +1,42 @@
+export type GatewayStderrClassification = {
+  level: 'drop' | 'debug' | 'warn';
+  normalized: string;
+};
+
+const MAX_STDERR_LINES = 120;
+
+export function classifyGatewayStderrMessage(message: string): GatewayStderrClassification {
+  const msg = message.trim();
+  if (!msg) {
+    return { level: 'drop', normalized: msg };
+  }
+
+  // Known noisy lines that are not actionable for Gateway lifecycle debugging.
+  if (msg.includes('openclaw-control-ui') && msg.includes('token_mismatch')) {
+    return { level: 'drop', normalized: msg };
+  }
+  if (msg.includes('closed before connect') && msg.includes('token mismatch')) {
+    return { level: 'drop', normalized: msg };
+  }
+
+  // Downgrade frequent non-fatal noise.
+  if (msg.includes('ExperimentalWarning')) return { level: 'debug', normalized: msg };
+  if (msg.includes('DeprecationWarning')) return { level: 'debug', normalized: msg };
+  if (msg.includes('Debugger attached')) return { level: 'debug', normalized: msg };
+
+  // Electron restricts NODE_OPTIONS in packaged apps; this is expected and harmless.
+  if (msg.includes('node: --require is not allowed in NODE_OPTIONS')) {
+    return { level: 'debug', normalized: msg };
+  }
+
+  return { level: 'warn', normalized: msg };
+}
+
+export function recordGatewayStartupStderrLine(lines: string[], line: string): void {
+  const normalized = line.trim();
+  if (!normalized) return;
+  lines.push(normalized);
+  if (lines.length > MAX_STDERR_LINES) {
+    lines.splice(0, lines.length - MAX_STDERR_LINES);
+  }
+}