fix(chrome-extension): finalize relay endpoint validation flow (#22252) (thanks @krizpoon)

CHANGELOG.md

@@ -12,6 +12,7 @@ Docs: https://docs.openclaw.ai
 
 - Gateway/Browser control: load `src/browser/server.js` during browser-control startup so the control listener starts reliably when browser control is enabled. (#23974) Thanks @ieaves.
 - Browser/Chrome relay: harden debugger detach handling during full-page navigation with bounded auto-reattach retries and better cancellation behavior for user/devtools detaches. (#19766) Thanks @nishantkabra77.
+- Browser/Chrome extension options: validate relay `/json/version` payload shape and content type (not just HTTP status) to detect wrong-port gateway checks, and clarify relay port derivation for custom gateway ports (`gateway + 3`). (#22252) Thanks @krizpoon.
 - Onboarding/Custom providers: raise verification probe token budgets for OpenAI and Anthropic compatibility checks to avoid false negatives on strict provider defaults. (#24743) Thanks @Glucksberg.
 - WhatsApp/DM routing: only update main-session last-route state when DM traffic is bound to the main session, preserving isolated `dmScope` routing. (#24949) Thanks @kevinWangSheng.
 - Providers/OpenRouter: when thinking is explicitly off, avoid injecting `reasoning.effort` so reasoning-required models can use provider defaults instead of failing request validation. (#24863) Thanks @DevSecTim.

assets/chrome-extension/options.js

@@ -87,19 +87,6 @@ async function checkRelayReachable(port, token) {
         `Relay not reachable/authenticated at http://127.0.0.1:${port}/. Start OpenClaw browser relay and verify token.`,
       )
     }
-  } catch (err) {
-    const message = String(err || '').toLowerCase()
-    if (message.includes('json') || message.includes('syntax')) {
-      setStatus(
-        'error',
-        'Wrong port: this is not a relay endpoint. Use gateway port + 3 (for gateway 18789, relay is 18792).',
-      )
-    } else {
-      setStatus(
-        'error',
-        `Relay not reachable/authenticated at http://127.0.0.1:${port}/. Start OpenClaw browser relay and verify token.`,
-      )
-    }
   }
 }