fix(studio): recover transient AI failures and report provider diagnostics

scripts/verify-deployment.ts

@@ -97,6 +97,8 @@ try {
     process.env.APIMART_API_KEY?.trim() &&
     (generation.provider !== "APIMart" ||
       generation.model !== "gpt-6-luna" ||
+      generation.maxAttempts !== 2 ||
+      generation.maxOutputTokens !== 8192 ||
       generation.timeoutMs !== 60_000)
   )
     throw Error(