fix(browser): prefer user profile over chrome relay

docs/gateway/configuration-reference.md

@@ -2342,7 +2342,7 @@ See [Plugins](/tools/plugin).
   browser: {
     enabled: true,
     evaluateEnabled: true,
-    defaultProfile: "chrome",
+    defaultProfile: "user",
     ssrfPolicy: {
       dangerouslyAllowPrivateNetwork: true, // default trusted-network mode
       // allowPrivateNetwork: true, // legacy alias

docs/gateway/troubleshooting.md

@@ -289,7 +289,7 @@ Look for:
 
 - Valid browser executable path.
 - CDP profile reachability.
-- Extension relay tab attachment for `profile="chrome"`.
+- Extension relay tab attachment for `profile="chrome-relay"`.
 
 Common signatures: